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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549





FORM 10-K





(Mark One)

|x | ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
|- | ------------------------------------------------------------------------------------

For the fiscal year ended December 31, 2014

or



| ̈ | TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
|- | ----------------------------------------------------------------------------------------

For the transition period
from to

Commission file number: 001-36751





Histogenics
Corporation

(Exact name of registrant as specified in its charter)







|                                                               |  |                                        
|-------------------------------------------------------------- |  | ---------------------------------------
|Delaware                                                       |  | 04-3522315                             
|(State or other jurisdiction of
incorporation or organization) |  | (I.R.S. Employer
Identification Number)



|                                                    |  |           
|--------------------------------------------------- |  | ----------
|830 Winter Street, 3rd Floor
Waltham, Massachusetts |  | 02451     
|(Address of principal executive offices)            |  | (Zip Code)

(781) 547-7900

(Registrants telephone number, including area code)

Securities registered pursuant to Section 12(b) of the Act:



|                                        |  |                                            
|--------------------------------------- |  | -------------------------------------------
|Common Stock, $0.01 par value per share |  | The NASDAQ Stock Market LLC                
|(Title of each class)                   |  | (Name of each exchange on which registered)

Securities registered pursuant to Section 12(g) of the Act:

None





Indicate by
check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act.    Yes   ̈    No  x

Indicate by check mark if the registrant is not required to file reports pursuant to
Section 13 or Section 15(d) of the Act.    Yes   ̈    No  x

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the
Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90
days.    Yes  x    No   ̈

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Website, if any, every Interactive Data
File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such
files).    Yes  x    No   ̈

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K (§ 229.405 of this chapter) is not
contained herein, and will not be contained, to the best of registrants knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K.   ̈

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated
filer, a non-accelerated filer, or a smaller reporting company. See the definitions of large accelerated filer, accelerated filer and smaller reporting company in Rule 12b-2 of the Exchange Act. (Check one):



|                        |  |                                                  |  |                           |  |  
|----------------------- |  | ------------------------------------------------ |  | ------------------------- |  | -
|Large accelerated filer |  |  ̈                                                |  | Accelerated filer         |  |  ̈
|                        |  |                                                  | 
|Non-accelerated filer   |  |  ̈  (Do not check if a smaller reporting company) |  | Smaller reporting company |  | x

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the
Act).    Yes   ̈    No  x

The aggregate market value of voting stock held by non-affiliates of the registrant on December 3, 2014, based on the closing price of
$11.75 for shares of the registrants common stock as reported by The NASDAQ Global Market, was approximately $54.5 million. The registrant has elected to use December 3, 2014 as the calculation date, which was the initial trading date of
the registrants common stock on The NASDAQ Global Market, because on June 30, 2014 (the last business day of the registrants second fiscal quarter), the registrant was a privately-held company. Shares of common stock held by each
executive officer, director, their affiliated holders and stockholders known by the registrant to own 10% or more of the outstanding stock based on public filings and other information known to the registrant have been excluded in that such persons
may be deemed to be affiliates. This determination of affiliate status is not necessarily a conclusive determination for other purposes.

As of March 20, 2015, there were 13,220,012 shares of the registrants Common Stock issued and outstanding.

DOCUMENTS INCORPORATED BY REFERENCE

Specified portions of the registrants proxy statement with respect to the registrants 2015 Annual Meeting of Stockholders, which is to be filed
pursuant to Regulation 14A within 120 days after the end of the registrants fiscal year ended December 31, 2014, are incorporated by reference into Part III of this Form 10-K.









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Histogenics Corporation

Form 10-K

Table of Contents



|                              |  |                                                                                                              |     |      |    | 
|----------------------------- |  | ------------------------------------------------------------------------------------------------------------ | --- | ---- | -- | 
|                              |  |                                                                                                              |     | Page |   
|                              |  | Part I                                                                                                       |     |      |    | 
|                              |  |                                                                                                             
|                              |  | Special Note Regarding Forward-Looking Statements                                                            |     |      | 1  | 
|                              |  |                                                                                                             
|                              |  | Industry and Market Data                                                                                     |     |      | 2  | 
|                              |  |                                                                                                             
|Item 1.                       |  | Business                                                                                                     |     |      | 4  | 
|                              |  |                                                                                                             
|Item 1A.                      |  | Risk Factors                                                                                                 |     |      | 37 | 
|                              |  |                                                                                                             
|Item 1B.                      |  | Unresolved Staff Comments                                                                                    |     |      | 74 | 
|                              |  |                                                                                                             
|Item 2.                       |  | Properties                                                                                                   |     |      | 74 | 
|                              |  |                                                                                                             
|Item 3.                       |  | Legal Proceedings                                                                                            |     |      | 74 | 
|                              |  |                                                                                                             
|Item 4.                       |  | Mine Safety Disclosures                                                                                      |     |      | 74 | 
|                              |  |                                                                                                             
|                              |  | Part II                                                                                                      |     |      |    | 
|                              |  |                                                                                                             
|Item 5.                       |  | Market for Registrants Common Equity, Related Shareholder Matters and Issuer Purchases of Equity Securities |     |      | 75 | 
|                              |  |                                                                                                             
|Item 6.                       |  | Selected Consolidated Financial Data                                                                         |     |      | 78 | 
|                              |  |                                                                                                             
|Item 7.                       |  | Managements Discussion and Analysis of Financial Condition and Results of Operations                        |     |      | 79 | 
|                              |  |                                                                                                             
|Item 7A.                      |  | Qualitative and Quantitative Disclosures about Market Risk                                                   |     |      | 91 | 
|                              |  |                                                                                                             
|Item 8.                       |  | Financial Statements and Supplementary Data                                                                  |     |      | 91 | 
|                              |  |                                                                                                             
|Item 9.                       |  | Changes in and Disagreements with Accountants on Accounting and Financial Disclosure                         |     |      | 91 | 
|                              |  |                                                                                                             
|Item 9A.                      |  | Controls and Procedures                                                                                      |     |      | 91 | 
|                              |  |                                                                                                             
|Item 9B.                      |  | Other Information                                                                                            |     |      | 92 | 
|                              |  |                                                                                                             
|                              |  | Part III                                                                                                     |     |      |    | 
|                              |  |                                                                                                             
|Item 10.                      |  | Directors, Executive Officers and Corporate Governance                                                       |     |      | 93 | 
|                              |  |                                                                                                             
|Item 11.                      |  | Executive Compensation                                                                                       |     |      | 94 | 
|                              |  |                                                                                                             
|Item 12.                      |  | Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters               |     |      | 95 | 
|                              |  |                                                                                                             
|Item 13.                      |  | Certain Relationships and Related Transactions, and Director Independence                                    |     |      | 95 | 
|                              |  |                                                                                                             
|Item 14.                      |  | Principal Accountant Fees and Services                                                                       |     |      | 96 | 
|                              |  |                                                                                                             
|                              |  | Part IV                                                                                                      |     |      |    | 
|                              |  |                                                                                                             
|Item 15.                      |  | Exhibits and Financial Statements Schedules                                                                  |     |      | 97 | 
|                              |  |                                                                                                             
|Signatures                    |  |                                                                                                              |     |      | 98 | 
|                              | 
|Index to Financial Statements |  |                                                                                                              | 99  |     
|                              | 
|Exhibit Index                 |  |                                                                                                              | 139 |     

HISTOGENICS (and design), our logo design and NEOCART are our registered trademarks, and BIOCART is our trademark. Any other
trademarks, registered marks and trade names appearing in this annual report on Form 10-K are the property of their respective holders. All other trademarks, trade names and service marks appearing in this annual report are the property of their
respective owners.



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PART I

SPECIAL NOTE REGARDING FORWARD-LOOKING STATEMENTS

Various statements in this report are forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995.
Forward-looking statements involve substantial risks and uncertainties. All statements, other than statements of historical facts, included in this report regarding our strategy, future operations, future financial position, future revenues,
projected costs, prospects, plans and objectives of management are forward-looking statements. These statements are subject to risks and uncertainties and are based on information currently available to our management. Words such as, but not limited
to, anticipate, believe, contemplates, continue, could, design, estimate, expect, intend, likely, may,
ongoing, plan, potential, predict, project, will, would, seek, should, target, or the negative of these terms and similar
expressions or words, identify forward-looking statements. The events and circumstances reflected in our forward-looking statements may not occur and actual results could differ materially from those projected in our forward-looking statements.
Meaningful factors which could cause actual results to differ include, but are not limited to:



| |  |  | the timing and success of preclinical studies and clinical trials conducted by us and our development partners;
| | - |  | ---------------------------------------------------------------------------------------------------------------



| |  |  | our securities or industry analysts expectations regarding the timing and success of enrollment in our clinical trials;
| | - |  | -------------------------------------------------------------------------------------------------------------------------



| |  |  | the ability to obtain and maintain regulatory approval of our product candidates and the labeling for any approved products;
| | - |  | ----------------------------------------------------------------------------------------------------------------------------



| |  |  | the scope progress and expansion and costs of developing and commercializing our product candidates;
| | - |  | ----------------------------------------------------------------------------------------------------



| |  |  | our expectations regarding our expenses and revenues, the sufficiency of our cash resources, our future profitability and needs for additional financing;
| | - |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | our technology transfer and manufacturing location transition;
| | - |  | --------------------------------------------------------------



| |  |  | our ability to adequately manufacture our product candidates and the raw materials utilized therein;
| | - |  | ----------------------------------------------------------------------------------------------------



| |  |  | our ability to obtain and maintain intellectual property protection for our product candidates;
| | - |  | -----------------------------------------------------------------------------------------------



| |  |  | our expectations regarding competition;
| | - |  | ---------------------------------------



| |  |  | the size and growth of the potential markets for our product candidates and the ability to serve those markets;
| | - |  | ---------------------------------------------------------------------------------------------------------------



| |  |  | the rate and degree of market acceptance of any of our product candidates;
| | - |  | --------------------------------------------------------------------------



| |  |  | our anticipated growth strategies;
| | - |  | ----------------------------------



| |  |  | the anticipated trends and challenges in our business and the market in which we operate;
| | - |  | -----------------------------------------------------------------------------------------



| |  |  | our ability to establish and maintain development partnerships;
| | - |  | ---------------------------------------------------------------



| |  |  | our ability to retain key personnel;
| | - |  | ------------------------------------



| |  |  | our ability to operate our business in compliance with the covenants and restrictions that we are subject to under our loan and security agreement;
| | - |  | ---------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | regulatory developments in the United States and foreign countries; and
| | - |  | -----------------------------------------------------------------------



| |  |  | our plans for the use of our cash and cash equivalents.
| | - |  | -------------------------------------------------------

All written and verbal forward-looking statements
attributable to us or any person acting on our behalf are expressly qualified in their entirety by the cautionary statements contained or referred to in this section. We caution investors not to rely too heavily on the forward-looking statements we
make or that are made on our



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behalf. We undertake no obligation, and specifically decline any obligation, to update or revise publicly any forward-looking statements, whether as a result of new information, future events or
otherwise. You are advised, however, to consult any further disclosures we make on related subjects in any annual, quarterly or current reports that we may file with the Securities and Exchange Commission.

We encourage you to read the discussion and analysis of our financial condition and our consolidated financial statements contained in this annual report on
Form 10-K. We also encourage you to read Item 1A of Part 1 of this annual report on Form 10-K, entitled Risk Factors, which contains a more complete discussion of the risks and uncertainties associated with our business. In addition
to the risks described above and in Item 1A of this report, other unknown or unpredictable factors also could affect our results. There can be no assurance that the actual results or developments anticipated by us will be realized or, even if
substantially realized, that they will have the expected consequences to, or effects on, us. Therefore no assurance can be given that the outcomes stated in such forward-looking statements and estimates will be achieved.

As used in this annual report on Form 10-K, the terms Histogenics, Company, registrant, we, us,
and our mean Histogenics Corporation and its subsidiaries unless the context indicates otherwise.

INDUSTRY AND MARKET DATA

We obtained the industry, market and competitive position data used throughout this annual report on Form 10-K from our own internal estimates and research,
as well as from industry and general publications, in addition to research, surveys and studies conducted by third parties in certain instances. Internal estimates are derived from publicly-available information released by industry analysts and
third-party sources, our internal research and our industry experience, and are based on assumptions made by us based on such data and our knowledge of our industry and market, which we believe to be reasonable. In addition, while we believe the
industry, market and competitive position data included in this annual report on Form 10-K is reliable and is based on reasonable assumptions, such data involves risks and uncertainties and are subject to change based on various factors, including
those discussed in Risk Factors. These and other factors could cause results to differ materially from those expressed in the estimates made by the independent parties and by us.

Certain information in the text of this annual report on Form 10-K is contained in independent industry publications. The source of each of these independent
industry publications is provided below:



| |  |  | Activity-Related Outcomes of Articular Cartilage Surgery: A Systematic Review (Published in Cartilage; Publication Date: March 18, 2013; Authors: Peter N. Chambers, M.D., Hari Vigneswaran, B.S.,
Joshua D. Harris, M.D. and Brian J. Cole, M.D., M.B.A.).
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | An Autologous Cartilage Tissue Implant NeoCart for Treatment of Grade III Chondral Injury to the Distal Femur: Prospective Clinical Safety Trial at 2 Years (Published in the American Journal of Sports
Medicine; Publication Date: 2009; Authors: Dennis C. Crawford, M.D., Ph.D., Chelsea M. Heveran, W. Dilworth Cannon Jr., M.D., Li Foong Foo, M.D. and Hollis G. Potter, M.D.).
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Articular cartilage defects: Study of 25,124 knee arthroscopies (Published in the Knee; Publication Date: February 20, 2007; Authors: W. Widuchowski, J. Widuchowski and T. Trzaska).
| | - |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Autologous Cultured Chondrocytes: Adverse Events Reported to the United States Food and Drug Administration (Published in the Journal of Bone and Joint Surgery; Publication Date: March 2006; Authors:
Jennifer J. Wood, Ph.D., M.P.H.; Mark A. Malek, M.D., M.P.H.; Frank J. Frassica, M.D.; Jacquelyn A. Polder, B.S.N., M.P.H.; Aparna K. Mohan, M.D., Ph.D.; Eda T. Bloom, Ph.D.; M. Miles Braun, M.D., M.P.H.; Timothy R. Coté, M.D., M.P.H.).
| | - |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | The Burden of Musculoskeletal Diseases in the United States: Prevalence, Societal and Economic Cost (Published by the American Academy of Orthopaedic Surgeons (Second Edition, 2011) and available at
http://www.boneandjointburden.org).
| | - |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



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| |  |  | Clinical Efficacy of the Microfracture Technique for Articular Cartilage Repair in the Knee: An Evidence-Based Systematic Analysis (Published in the American Journal of Sports Medicine; Publication
Date: September 26, 2009; Authors: Kai Mithoefer, M.D., Timothy McAdams, M.D., Riley J. Williams, M.D., Peter C. Kreuz, M.D. and Bert R. Mandelbaum, M.D.).
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Increase in Outpatient Knee Arthroscopy in the United States: A Comparison of National Surveys of Ambulatory Surgery, 1996 and 2006 (Published in the Journal of Bone and Joint Surgery; Publication
Date: June 1, 2011; Authors: Sunny Kim, Ph.D., Jose Bosque, M.D., John P. Meehan, M.D., Amir Jamali, M.D. and Richard Marder, M.D.).
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | NeoCart, an Autologous Cartilage Tissue Implant, Compared with Microfracture for Treatment of Distal Femoral Cartilage Lesions (Published in the Journal of Bone and Joint Surgery; Publication Date:
June 6, 2012; Authors: Dennis C. Crawford, M.D., Ph.D., Thomas M. DeBerardino, M.D. and Riley J. Williams III, M.D.).
| | - |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Overview of Treatment Options for Articular Cartilage Repair: Past Present & Future (presented at Cellular, Tissue and Gene Therapies Advisory Committee Meeting for the Food and Drug Administration
on May 15, 2009 by Ken Zaslav, M.D.).
| | - |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Projections of Primary and Revision Hip and Knee Arthroplasty in the United States from 2005 to 2030 (Published in the Journal of Bone and Joint Surgery; Publication Date: April 2007; Authors: Sunny
Kim, Ph.D., Jose Bosque, M.D., John P. Meehan, M.D., Amir Jamali, M.D. and Richard Marder, M.D.).
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Tissue Engineering, Cell Therapy and Transplantation: Products, Technologies & Market Opportunities, Worldwide, 2009-2018 (Published by MedMarket Diligence, LLC; Publication Date: 2010).
| | - |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



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|ITEM | 1.BUSINESS
|---- | ----------

Overview

We are a regenerative medicine company focused on developing and commercializing products in the musculoskeletal segment of the marketplace. Our first product
candidate, NeoCart, is being investigated in a Phase 3 clinical trial. NeoCart utilizes various aspects of our regenerative medicine platform to develop an innovative tissue implant intended to treat tissue injury in the field of orthopedics,
specifically cartilage damage in the knee. NeoCart is an investigational product and has not been approved for sale in any jurisdiction, including the United States. We have no products that are approved for sale in the United States and currently
we are not selling any other products that may be approved for sale in other jurisdictions.

Our regenerative medicine platform provides the tools to
develop NeoCart. Our regenerative medicine platform combines expertise in the following areas:



| |  |  | Cell processing: the handling of a tissue biopsy, extraction of cells, and expansion of the cells;
| | - |  | --------------------------------------------------------------------------------------------------



| |  |  | Scaffold: three-dimensional structures that enable the proper distribution of cells and organize cells in their natural environment to support tissue formation;
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Tissue engineering: the use of a combination of cells, engineering and materials to improve or replace biological functions; and
| | - |  | --------------------------------------------------------------------------------------------------------------------------------



| |  |  | Bioadhesives: natural, biocompatible materials that act as adhesives for biological tissue.
| | - |  | -------------------------------------------------------------------------------------------

NeoCart is a
cartilage-like implant created using a patients own cartilage cells through a series of tissue engineering processes. First, the patients cells are separated from a tissue biopsy specimen extracted from the patient by a surgeon and
multiplied in our laboratory. The cells are then infused into our proprietary scaffold that provides structure for the developing implant. Before NeoCart is implanted in a patient, the cell- and scaffold construct undergoes a bioengineering process
in our Tissue Engineering Processor (TEP). Our TEP is designed to mimic the conditions found in a joint so that the implant is prepared to begin functioning like normal healthy cartilage prior to implantation. When NeoCart is implanted, a
bioadhesive is used to anchor NeoCart in the cartilage injury and seal the implant to the surrounding native cartilage interface. The use of the bioadhesive eliminates the need for complicated suturing, and the cartilage implant integrates to the
surrounding native cartilage. We believe that the Phase 1 and Phase 2 clinical trials provide preliminary evidence for the safety of the NeoCart implant and improvement in pain and function in patients treated with NeoCart.

We are currently enrolling a Phase 3 clinical trial for NeoCart in the United States to provide evidence of the safety and effectiveness of NeoCart, studying
cartilage defects in the knees of 245 patients under a Special Protocol Assessment (SPA) with the U.S. Food and Drug Administration (FDA). Pursuant to the SPA, we formally and prospectively reached agreement with the FDA on key elements of the Phase
3 clinical trial protocol, including design, endpoints and statistical analyses of the resulting study data. The SPA is binding on the FDA review division with limited exceptions. If the clinical trial is successful, the data may be used to support
efficacy claims for NeoCart approval and demonstrate clinical superiority over the current standard of care, microfracture. Microfracture consists of the creation of tiny holes or fractures in the bone underneath the injured cartilage
leading to formation of a blood clot in the affected area. The blood and bone marrow that form the clot contain stem cells, which are thought to grow into cartilage-building cells. If we are successful in demonstrating superiority to microfracture
in improvement in pain and function at 12 months postoperative in our Phase 3 clinical trial and NeoCart is approved for sale in the United States, we believe it would be the first product approved for the first-line treatment of severe cartilage
damage to demonstrate clinical superiority over microfracture.

Musculoskeletal-related conditions, including cartilage damage, are one of the most
prevalent health problems in the United States. Based on recent publications, we estimate that 1,000,000 knee arthroscopies are performed each year in the United States and we believe cartilage damage is likely to be identified in over 60% of those



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knee arthroscopies. Cartilage damage is a leading cause of osteoarthritis, a chronic condition in which cartilage breaks down, and the condition most responsible for the estimated 750,000 knee
replacements performed in the United States annually. We believe the current alternatives available to treat cartilage damage in the knee, including microfracture, the most frequently used procedure for severe cartilage damage, inadequately address
this condition.

We believe NeoCart would represent a superior solution to treat cartilage damage in the knee because it has the potential to solve for
the limitations of the current treatment alternatives and has the potential to provide improved efficacy, long-term patient benefits, accelerated patient recovery and predictable patient outcomes through a technically straightforward surgical
procedure. To date, we have completed two FDA-regulated human clinical trials in the United States. Specifically, we conducted a Phase 1 safety study of eight patients and a Phase 2 randomized controlled exploratory study of 30 patients. The
objective of the Phase 1 clinical trial was to demonstrate the safety of NeoCart for use when implanted into cartilage defects in the knee. The objective of the Phase 2 clinical trial was to continue the safety evaluation of NeoCart, gather
additional efficacy data compared to microfracture, identify validated endpoints that are meaningful to patients and physicians, identify appropriate patient populations to receive NeoCart and obtain additional data to be used in the design of
future clinical studies. NeoCart demonstrated improvement in clinical efficacy based on pain and function measures as compared to microfracture in our Phase 2 clinical trial. We believe our Phase 3 study will confirm the positive Phase 1 and Phase 2
clinical data generated by NeoCart, which we believe are a direct result of our regenerative medicine platform and the elements comprising our platform.

The goal of our Phase 3 clinical trial, which we are currently enrolling, is to demonstrate advantages of NeoCart over microfracture with respect to efficacy,
accelerated patient recovery, technically straightforward surgery, long-term patient benefits and a positive safety profile. We believe the advantages will allow us to secure approval to sell NeoCart in the United States and will enable us to
potentially become a market leader in cartilage repair. We expect to complete enrollment of our NeoCart Phase 3 clinical trial by the end of the first half of 2016, but we may encounter difficulties enrolling patients in our clinical trials, which
could delay or otherwise adversely affect our clinical development activities. As of December 31, 2014, we had 30 sites eligible to enroll patients. Once randomized into the trial based on eligibility, patients undergo their surgical treatment
and return for evaluation and data collection by the investigators at regular intervals for three years as set forth in the study protocol. We are financing the Phase 3 clinical trial with funds raised from the proceeds from our initial public
offering with an expected completion of enrollment by the end of the first half of 2016.

In anticipation of potential approval of NeoCart, we have begun
to scale our internal current Good Manufacturing Practices manufacturing capabilities and transition the manufacture of all our products in-house at our facilities located in the greater Boston area. The transition commenced in March 2014 with the
intent of having the ability to manufacture NeoCart and the critical components of NeoCart with minimal reliance on third parties prior to the commercialization of NeoCart in the event NeoCart is approved. We completed our initial engineering runs
and initial validation studies for our facility in Lexington, Massachusetts, which has been operational since October 2014. Following completion of this transition, we will be required to obtain FDA approval of the comparability of the critical
NeoCart raw materials moved in-house, and if we fail to obtain, or if we experience a delay in obtaining such approval, our business, operating results and prospects will be adversely affected.

We believe our regenerative medicine platform may provide us with the ability to develop a strong pipeline and that the positive clinical data we have seen in
treating cartilage damage of the knee with NeoCart will be applicable to other joints such as the ankle, hip and shoulder. We also believe our regenerative medicine platform has the ability to translate the fundamental science to allow us to develop
additional product candidates to treat other soft tissue damage throughout the body such as tendon, ligament and meniscus tears and complex joint degeneration. Although not utilized in connection with our current NeoCart development, our portfolio
of proprietary fibroblast growth factors may be explored for their use in optimizing manufacturing yields and we believe they could also have various therapeutic applications including wound healing and fracture healing. We plan to continue
investing in our intellectual property portfolio in order to expand and protect the components of our regenerative medicine platform and future product candidates.



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Regenerative Medicine

Regenerative medicine is a rapidly developing, interdisciplinary field that is transforming healthcare by translating fundamental science into a variety of
products and solutions aimed at repairing, regenerating or replacing function loss caused by injury, disease or aging. Regenerative medicine technologies encompass a variety of therapeutic approaches, including tissue engineering, cell-based
therapies, gene therapy, small molecules and biologics, stem cells and biobanking. Any combination of these technologies may be used to harness or stimulate the bodys innate healing ability in order to treat a wide range of ailments, including
musculoskeletal-related conditions, cardio- and peripheral vascular diseases, neurological disorders, stroke, non-healing wounds and ocular diseases.

Musculoskeletal conditions, comprised of injuries to or diseases of bones, cartilage, joints, ligaments, muscles, nerves, skin or tendons, are the most common
health problem in the United States and are a leading cause of disability and healthcare expenditure according toThe Burden of Musculoskeletal Diseases in the United States, a 2011 publication of a coalition of professional organizations
including the American Academy of Orthopaedic Surgeons. Based on the commercial introduction of new products and expanded applications of approved products, the musculoskeletal, orthopedics and spine segment of the regenerative medicine market is
projected to reach approximately $13.0 billion worldwide by 2015 according to a 2010 report issued by MedMarket Diligence.

Our initial product candidate,
NeoCart, leverages our regenerative medicine platform and, upon approval, if any, we believe will compete in the musculoskeletal segment of the regenerative medicine marketplace with an initial focus on treating cartilage damage in the knee.

Cartilage Damage

Joint, or articular, cartilage
covers the ends of bones and allows for joints to glide smoothly with minimal friction. Cartilage damage, or chondral defects, can be caused by acute trauma, such as a bad fall or sports-related injury, or by repetitive trauma, such as general wear
over time. Unlike other tissues in the body, joint cartilage has no innate ability to repair itself, making any injury permanent. Left untreated, even a small chondral defect can expand in size and progress to debilitating arthritis, ultimately
necessitating a joint replacement procedure.

We estimate that, based in part on historical growth rates reflected in a 2011 article in the Journal of
Bone and Joint Surgery, over 1,000,000 knee arthroscopies are performed on an annual basis in the United States in skeletally mature adults and, based on a 2007 article published in The Knee, more than 60% of those arthroscopies may
reveal cartilage damage. To standardize the reporting of the severity of chondral defects, the International Cartilage Repair Society established a universal classification system that grades the damage using a scale of 1 to 4, with 4 considered the
worst. Grade 3 and 4 chondral defects, also referred to as full-thickness defects, are considered severe. Based on the projected growth in the number of annual arthroscopies in the United States, we believe that by 2015 at least 750,000 patients in
the United States will be diagnosed with full-thickness chondral defects and over 1,000,000 Americans annually will undergo a primary total knee replacement resulting from disabling arthritis.

Limitations of Current Alternatives for Treating Cartilage Damage

We estimate, based on internal research, that over 500,000 knee cartilage procedures are performed annually in the United States, primarily in the form of
debridement, microfracture, conventional autologous chondrocyte implantation (ACI) and osteochondral grafting. Debridement and microfracture procedures are the most frequently performed surgical procedures for treatment for cartilage damage,
accounting for an estimated 90% of all such procedures according to materials from a 2009 meeting of the Cellular Tissue and Gene Therapies Advisory Committee of the FDA. Debridement is an arthroscopic procedure that involves removal of injured or
loose tissue debris by shaving, cutting or scraping it. Debridement does not attempt to repair cartilage damage. The surgeons only goal when performing debridement is to improve a patients symptoms of pain or loss of function.



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Microfracture is considered the current standard of care for chondral defects due to its short-term success in
improving symptoms in many patients, its simplicity, its safety profile and the lack of other viable alternatives. The procedure consists of perforations, or microfractures, made to the bone plate at the location of cartilage damage in order to
allow bone marrow stem cells access to the injured area. Microfracture surgery, a procedure pioneered in the 1980s, was developed to exploit the ability of stem cells to differentiate into mature cells and tissue types. If bone marrow stem cells are
able to access the injured area and stay in place by forming a blood clot, then they may differentiate into cartilage cells, or chondrocytes, that would potentially go on to form cartilage. However, microfracture has been unsuccessful in reliably
solving the underlying problem of cartilage damage because the repair tissue formed by the procedure, which has been found to usually be a mix of tissue types, is incapable of withstanding the normal shock and shear forces that joint cartilage
sustains.

In addition to its inability to solve the underlying problemdamage to the articular cartilagemicrofracture is associated with
numerous other drawbacks and limitations, including the following:



| |  |  | Modest and Variable Efficacy: The results of microfracture vary based on patient-specific characteristics and individual healing responses. Studies have shown the benefits of microfracture are
negatively influenced by advanced age, higher body weight, larger chondral defect size and limited amount of repair tissue formed.
| | - |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Limited Long-Term Patient Benefits: Positive clinical response to microfracture has been shown to wane over time. A systematic review summarizing multiple articles on microfracture and published in
theAmerican Journal of Sports Medicine in 2009 revealed that up to 80% of microfracture patients report deterioration in their postoperative functional improvement after two years. Based on our interpretation of a 2013 article inCartilage and the 2009 systematic review in theAmerican Journal of Sports Medicine, we believe over 30% of microfracture patients require subsequent additional cartilage procedures after two years and up to 50% of all microfracture
patients eventually require unplanned knee procedures due to persistent or recurrent symptoms.
| | - |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Extended Patient Recovery: Microfracture patients are typically not allowed to resume any vigorous activities for six months after their surgeries. During this time, patients must avoid weight-bearing
activities for the first six weeks and use continuous passive motion machines for several hours per day. Prolonged physical therapy is often recommended. Such requirements and restrictions are believed necessary to optimize the anatomic and clinical
results of microfracture, but come at the cost of muscle weakening, quality of life and delayed resumption of activities.
| | - |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

ACI and
osteochondral grafting are procedures generally reserved for failed cartilage procedures or very large cartilage defects. While studies indicate beneficial outcomes for patients receiving these treatments, both have drawbacks and limitations similar
to those affecting debridement and microfracture, and also are associated with the following:



| |  |  | Technically Demanding Surgeries: ACI is a slurry of autologous cartilage cells formed from a biopsy of a patients cartilage and grown over six to eight weeks. A patch or cover must be sutured
into the surrounding healthy cartilage to hold the slurry in place. Osteochondral grafting, whether using the patients own cells or using another persons tissue, consists of a circular plug of bone and cartilage press-fit into the defect
and can be challenging to perform because of the difficulty of achieving an exact match, fit and placement of the graft.
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Negative Safety Profile: ACI techniques are associated with graft failure, delamination (loss of cartilage layering), tissue overgrowth and knee stiffness. According to a 2006 report in the Journal
of Bone and Joint Surgery, 48% of ACI patients underwent reoperation as a result of problems directly related to the graft. Osteochondral grafting, if performed with the patients own cells, is associated with limitations in treatable
defect sizes because of associated donor site morbidity and, if performed using another persons tissue, is associated with the potential of disease transmission and nonunion.
| | - |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



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Our Regenerative Medicine Platform and Initial Product Candidate

Our Regenerative Medicine Platform

Our
regenerative medicine platform is comprised of innovative bioengineering, advanced proprietary materials sciences as well as molecular and cellular biology technologies that can be utilized individually or in a variety of combinations to treat
musculoskeletal-related conditions:



| |  |  | Cell Processing:As part of our process of implant production, our cell processing technologies involve the handling of a biopsy specimen in our own cGMP facilities, cell extraction from the biopsy
and the expansion of cells in our segregated cell culture facility. Our proprietary process is currently optimized for, but not limited to, cartilage cell culturing.
| | - |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Scaffolds: Scaffolds are structures capable of supporting three-dimensional tissue formation and providing an environment for the cells that are needed to form the tissue. Our three-dimensional
scaffold structures, including our honeycomb collagen scaffolds, are designed to produce a cartilage-like implant. The term honeycomb describes the shape of the pores inside of the scaffold as they are shaped like a honeycomb. The
scaffold for NeoCart is shaped like a disk, with diameter of 34 mm and thickness of 1.5 mm. Our scaffold structures enable the distribution of cells throughout the scaffold. The honeycomb structure is important because it allows cartilage cells to
line up vertically throughout the scaffold so that they organize as they normally would in native cartilage. Competing scaffolds only accommodate cells on their surface or in layers. Our proprietary three-dimensional scaffolds are biocompatible,
biodegradable and non-toxic. These scaffolds can support and deliver a variety of cell types.
| | - |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Tissue Engineering:Tissue engineering refers to applications that repair or replace portions of or whole tissues such as cartilage, bone, blood vessels and skin. We use a combination of cells,
engineering and materials methods to produce our tissue implant for the purpose of repairing cartilage tissue. Our proprietary TEPs incubate our cell- and scaffold-based implants under conditions designed to mimic the conditions found in the knee,
including pressure changes and low oxygen levels. We believe our proprietary TEP technology is unique to the tissue repair market and is one of the reasons patients receiving a NeoCart implant in our Phase 1 and Phase 2 clinical trials recovered
more quickly and realized positive long-term outcomes as compared to patients receiving microfracture surgery.
| | - |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Bioadhesive: Our proprietary bioadhesive, CT3, secures the NeoCart implant in the defect and eliminates the need for complicated suturing required during certain other cartilage repair treatments. CT3
is comprised of three components: methylated collagen, activated polyethylene glycol (PEG) and a simple salt buffering solution that acts as a curing component. CT3 is biodegradable and nontoxic. We believe CT3 contributes to the quick recovery and
the positive long-term outcomes seen in our Phase 1 and Phase 2 clinical trials.
| | - |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

NeoCart: Our Initial Product Candidate

NeoCart, our Phase 3 product candidate, utilizes many aspects of our regenerative medicine platform to repair knee cartilage damage. We believe NeoCart has the
potential to provide several benefits not provided by current treatment alternatives for knee cartilage damage, including:



| |  |  | Improved Efficacy: In our Phase 2 clinical trial of 30 patients, NeoCart showed better clinical outcomes when compared directly to microfracture on measures of pain and function. The difference in
improvement between the two groups was apparent as early as three months following surgery and was statistically significant at six months, one year, two years and three years. We believe efficacy seen in our trials to date is a result of
NeoCarts ability to function like cartilage upon implantation and integrate with the surrounding native tissue, features that distinguish it from current treatment alternatives.
| | - |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Accelerated Patient Recovery: Our CT3 bioadhesive anchors NeoCart in the defect bed and seals it to the surrounding native
cartilage. The cartilage-like NeoCart implant coupled with the secure CT3
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



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| | fixation may allow for earlier weight-bearing and accelerated recovery of function than is typical with current therapies, which would be distinctly advantageous for any cartilage repair
solution. In our Phase 3 clinical trial, patients may be allowed to begin weight-bearing activities as soon as two weeks following implantation versus six weeks for the current standard of care, microfracture.
| | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Long-Term Patient Benefits: In contrast to microfractures well-documented deterioration of results after two years, NeoCarts positive outcomes have been sustained for three or more years
in our Phase 1 and 2 clinical trials. We believe that all of the biologic and mechanical attributes of NeoCart provide the potential for a durable clinical response and give it the potential to prevent the evolution of osteoarthritis and subsequent
need for knee replacement surgery.
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Technically Straightforward Surgery: The use of our CT3 bioadhesive eliminates the need for complicated suturing associated with ACI techniques. Unlike osteochondral grafting procedures, the NeoCart
implant is tailored to the shape of the defect so that all normal host tissue is left in place.
| | - |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Positive Safety Profile:To date, NeoCart has shown no evidence of tissue overgrowth or knee stiffness often associated with ACI techniques. Reoperation rates to address problems directly related to
the cartilage procedure or other persistent general knee symptoms, associated with all cartilage techniques and particularly high with ACI techniques, have been very low in NeoCart patients followed for five years in our Phase 1 and Phase 2 clinical
trials.
| | - |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Our Business Strategy

Our
goal is to leverage our regenerative medicine platform to develop and commercialize innovative, next generation products to treat patients suffering from musculoskeletal-related conditions. To achieve our goal, we initially plan to focus on
completing the enrollment of our Phase 3 clinical trial for NeoCart by the end of the first half of 2016 with the intent of applying for regulatory approval in the United States from the FDA after the 12 month primary endpoint clinical data is
available. In parallel, we plan to continue to develop our manufacturing capabilities that support the clinical development and eventual commercial development of NeoCart, if approved. We plan to build our commercial infrastructure during our Phase
3 clinical trial for NeoCart to support a successful launch and commercialization of NeoCart in the event it receives FDA approval. The overarching strategies that support these goals are as follows:



| |  |  | Complete Phase 3 Clinical Trial and Apply for Regulatory Approval of NeoCart in the United States.We are currently enrolling our Phase 3 clinical trial. As part of the clinical trial, 245 patients
will be randomly selected to receive either a NeoCart implant or microfracture surgery on a two-to-one basis. As of December 31, 2014, we had 30 sites eligible to enroll patients across the United States, with an additional nine sites
identified that we may elect to activate. We have the ability, if we choose to, to activate up to an aggregate of 40 sites for the completion of the clinical trial. Assuming positive results of the clinical trial, we plan to submit a Biologics
License Application (BLA) to the FDA for approval in the United States when the 12 month data is available, which we expect to be in the second half of 2017. Upon receiving approval from the FDA, if at all, which we anticipate would be in 2018 if a
BLA is submitted in the second half of 2017, we then intend to launch and commercially market NeoCart for the treatment of cartilage defects in the knee.
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Continue to Develop Our Manufacturing Capabilities. We own and operate our own cGMP manufacturing operations for NeoCart and we plan to transfer production of critical raw materials and components
used in the NeoCart production process to a new manufacturing facility that we have developed and continue to develop in Lexington, Massachusetts. For our clinical trials of NeoCart, the raw materials and components were supplied to us by external
vendors. We are transferring production of these raw materials to our own facilities in order to gain full control over quality, process, supply and costs. This transition to our own manufacturing facilities will also enable us to expand production
capacity for clinical and commercial supply of NeoCart in the future in the event we receive FDA approval, subject to comparability verification and confirmation by the FDA.
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| |  |  | Maximize Commercial Opportunity of NeoCart. We expect to invest strategically in a U.S. commercial infrastructure to support the successful launch, commercialization and post-marketing support for
NeoCart in the event NeoCart should receive FDA approval. As part of this investment, we intend to build a highly experienced medical affairs, sales and marketing organization to target orthopedic surgeons in the United States as the primary point
of contact. In preparation for a potential launch of NeoCart, if ever, we are developing a reimbursement dossier to facilitate the introduction of NeoCart into the marketplace. In November 2014, we submitted a protocol amendment to the FDA to
augment additional Health Economics Outcomes Research data to further support our future reimbursement initiatives. These data would collect additional key economic data and outcomes associated with quality of life, productivity and return to work
status, and healthcare resource utilization related to direct and indirect costs
| | - |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Leverage Our Core Technology Platform to Expand into Additional Therapeutic Applications. We believe a significant unmet market need and commercial opportunity exist for NeoCart to treat cartilage defects
in other joints such as ankles, shoulders and hips. With the development of our manufacturing capabilities for raw materials, we intend to identify a second indication for proof of concept testing in 2015. Further, we plan to exploit our
regenerative medicine platform to develop products that treat additional soft tissue and musculoskeletal-related disorders.
| | - |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Develop Next Generation Products Under our Exclusive Channel Collaboration Agreement with Intrexon. In September 2014, we entered into an Exclusive Channel Collaboration Agreement (the ECC) with Intrexon
Corporation (Intrexon) that governs a channel collaboration arrangement. Pursuant to our ECC, we intend to use Intrexons synthetic biology technology platform for the development and commercialization of genetically modified
chondrocyte cell therapeutics for the treatment or repair of damaged articular hyaline cartilage in humans. The target of this collaboration initially is the design and manufacture of next-generation cartilage tissue products that may integrate with
our proprietary cellular scaffold platforms and manufacturing processes similar to those currently deployed in our ongoing Phase 3 clinical trial of NeoCart. We do not intend to impact our ongoing NeoCart clinical program. We believe we can also
leverage our proficiency in cell processing, biomaterials and tissue engineering to complement Intrexons synthetic biology technologies in this research collaboration to increase our future manufacturing capacities and efficiencies, and
accelerate our platform technology pipeline initiatives.
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Selectively Evaluate Business Development Opportunities.We plan to evaluate business development opportunities, which may include in-licensing and out-licensing of products or technologies, in order
to strengthen our revenue prospects and improve our manufacturing capabilities.
| | - |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Continue to Invest in Building and Protecting Our Intellectual Property. We intend to continue to expand our strong existing intellectual property portfolio and protect our regenerative medicine
platform for both NeoCart and future product candidates by filing patent applications in the United States, the European Economic Area (EEA, which is comprised of the 28 Member States of the European Union, Iceland, Liechtenstein and Norway) and
other jurisdictions with the goal of extending the degree and level of protection as well as the duration of protection across our core technologies and products.
| | - |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Our Phase 3 Product Candidate: NeoCart

NeoCart is our
lead product candidate and is currently being evaluated in a U.S. Phase 3 clinical trial as a first-line therapy for full thickness knee chondral lesions in skeletally mature adults age 18 to 55. NeoCart is a cartilage-like implant created from a
patients own cartilage cells. The patients cells are multiplied in our laboratory and then infused into a proprietary scaffold to allow them to organize and function like cartilage cells. Before NeoCart is shipped to the surgeon for
implantation, the cell- and scaffold construct undergoes a bioengineering process that is designed to mimic a joint so that the implant, upon placement in the knee with our proprietary CT3 bioadhesive, is primed to begin functioning like healthy
cartilage.



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NeoCart data produced to date in the Phase 1 and 2 clinical trials has demonstrated very favorable safety and the
potential for durable efficacy and has been published in journals such as theJournal of Bone and Joint Surgery, which accepted the Phase 2 data as resulting from a study that was designed, conducted, analyzed and reported with the highest
degree of rigor possible. Please see the sections below entitled Phase 2 Clinical Trial and Phase 1 Clinical Trial for a discussion of the data from our Phase 1 and Phase 2 clinical trials. We consider the data observed thus
far to be a direct result of NeoCarts distinct attributes, that combine to form a sophisticated and unique biologic implant capable of functioning like normal cartilage upon implantation. Further, we believe the data reflects that, after
implantation, NeoCart continues to mature and integrate with the native cartilage as it experiences the natural environment of the joint. We believe these attributes and the clinical data we have accumulated to date differentiate NeoCart from other
treatment alternatives, including microfracture. A pictorial representation of the entire NeoCart creation process from biopsy to implantation is displayed below.

THE NEOCART PROCESS



LOGO

Phase 3 Clinical Trial

We are pursuing FDA approval via a BLA pathway with a clinical trial designed to show superiority against the current standard of care, microfracture. Our
NeoCart Phase 3 clinical trial is being performed under an SPA with the FDA and was initiated as a confirmatory study based on the promising safety and efficacy findings from our Phase 2 clinical trial. The Phase 3 clinical trial design, based on
our Phase 2 clinical trial, is a prospective, controlled, multi-center trial of 245 adults between the ages of 18 and 55 years who have symptomatic focal full-thickness chondral knee defects randomized between NeoCart and microfracture on a
two-to-one basis. Randomization is done at arthroscopy, at which time final patient eligibility is determined.



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As agreed to with the FDA under our SPA, the primary endpoint for approval is superiority at one year in the
proportion of responders in the NeoCart patient group compared to the proportion of responders in the microfracture patient group in a dual-threshold responder analysis. This unique dual-threshold responder analysis utilizes the Knee Injury and
Osteoarthritis Outcome Score (KOOS) pain subscale and International Knee Documentation Committee Subjective (IKDC Subjective) assessments. Both the KOOS pain and the IKDC Subjective assessments are validated, patient-centered and self-administered
outcome instruments intended to assess patient-relevant outcomes. The KOOS separately assesses and scores five dimensions of outcomes from the patients perspective: pain, symptoms, activities of daily living, sport and recreation function and
knee-related quality of life. Similarly, the IKDC Subjective assesses and scores three dimensions of outcomes from the patients perspective: symptoms, function during activities of daily living and sports.

The scores are tabulated and transformed to a 100-point scale, where 100 represents the best outcome for either pain or function and zero represents the worst
outcome. A one-year superiority endpoint was deemed appropriate for our Phase 3 clinical under our SPA trial based on the magnitude of difference between the responder rates at one year for patients receiving NeoCart implants and patients receiving
microfracture surgery in our Phase 2 clinical trial, a magnitude of difference that continued to be present at the second and third years. We believe that, should our Phase 3 clinical trial show a comparable magnitude of difference in responder
rates between NeoCart and microfracture, NeoCarts ability to function like cartilage upon implantation and integrate with the surrounding native tissue (attributes of NeoCart we believe are responsible for our Phase 2 clinical trial results)
will be a principal reason for the one-year Phase 3 clinical trial outcome and the presumed resultant durability. However, there is no guarantee that our Phase 3 clinical trial results will demonstrate the same results as our Phase 2 or Phase 1
clinical trials and NeoCart may not be approved for sale in the United States by the FDA after the FDA reviews the results of the Phase 3 clinical trial.

Similar to our Phase 2 clinical trial, discussed below in Phase 2 Clinical Trial, in the Phase 3 clinical trial, a patient is considered a
responder if he or she achieves both of the following patient-reported outcomes:



| |  |  | improvement of at least 12 points compared to the patients baseline score in KOOS pain subscore assessment; and
| | - |  | ----------------------------------------------------------------------------------------------------------------



| |  |  | improvement of at least 20 points compared to the patients baseline score on the IKDC Subjective assessment.
| | - |  | -------------------------------------------------------------------------------------------------------------

In the schematic below, the area in the upper right-hand quadrant of the graph, shaded in gray, is the zone reflecting those patients who achieved improvement
of both at least 12 points on the KOOS pain scale and at least 20 points on the IKDC Subjective. The horizontal axis, or x-axis, is the KOOS pain scale and the vertical axis, or y-axis, is the IKDC Subjective.

SCHEMATIC REPRESENTATION OF RESPONDER RATE ANALYSIS



LOGO



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The following additional endpoints will be evaluated in secondary superiority testing at one year comparing the
NeoCart patient group to the microfracture patient group:



| |  |  | time to full weight-bearing;
| | - |  | ----------------------------



| |  |  | treatment failure, defined as a greater than an 8-point deterioration in KOOS pain score at one year compared to baseline; and
| | - |  | --------------------------------------------------------------------------------------------------------------------------------



| |  |  | presence of mature collagen layering as assessed by magnetic resonance imaging cartilage mapping at one year.
| | - |  | -------------------------------------------------------------------------------------------------------------

Patients will be followed for a total of three years for safety and additional efficacy data.

Phase 3 Status

In late 2009, pursuant to our SPA,
we initiated our Phase 3 clinical trial and our first patient was randomized in June 2010. In September 2010, after nine patients had been randomized, active enrollment was postponed until the completion of a convertible debt financing in late
2011.

In November 2012, we voluntarily suspended manufacturing operations and paused enrollment of the NeoCart Phase 3 clinical trial upon discovery
of discrepancies in the testing procedures used to assess one of the raw materials (bovine-derived type I collagen) utilized in the manufacture of NeoCart implants. All participating clinical trial sites, including Institutional Review Boards (IRB),
and the FDA were notified of our decision. After an in-depth review of all available information, we concluded that the observed discrepancies did not impact product quality or patient safety, but we chose to continue our self-imposed pause to
improve and upgrade certain of our existing manufacturing and quality control systems processes to meet or exceed cGMP standards. This transition was completed in December 2013.

Prior to our November 2012 voluntary election to pause enrollment, 30 patients had been randomized into the NeoCart Phase 3 clinical trial. Twenty-one of
these patients were randomized to receive a NeoCart implant and nine were randomized to undergo a microfracture procedure. Upon completion of the manufacturing transition in December 2013, we resumed enrollment at several active sites,
specifically chosen based on appropriate case volume, investigator interest in the science of cartilage and clinical research capabilities. Under the SPA, we have the ability to expand the clinical trial to 40 U.S. sites. Based on certain
assumptions, including estimates of patient recruitment at 30 fully qualified sites and timely completion of the technology transfer discussed below in ManufacturingNeoCart Technology and Materials Transfer, we anticipate enrolling
the remaining patients by the end of the first half of 2016.

Phase 2 Clinical Trial

Our NeoCart Phase 2 clinical trial was initiated in 2007 to evaluate further the positive safety and early efficacy signals demonstrated in our Phase 1
clinical trial of NeoCart for articular cartilage damage in the knee. We also sought to identify clinically meaningful endpoints and identify appropriate patient populations to be studied in the design of future clinical studies. The trial was a
five-year prospective, controlled, randomized, clinical study of 30 patients conducted at six U.S. centers and completed its enrollment in 2008. Twenty-one patients were randomized to receive a NeoCart implant and nine patients were randomized to
undergo a microfracture procedure. The trial was completed in 2013 and final data collection was completed in 2014.

In the Phase 2 clinical trial,
baseline (preoperative) pain and function assessments were obtained and included, among other measurement instruments, the KOOS pain and symptoms subscales, the IKDC Subjective assessment and a visual analog pain scale. At every measurement interval
between three months and three years, the same pain and function assessments were measured. The data were analyzed using descriptive statistics



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(mean and standard deviation), paired t testing and analysis of covariance with significance levels (p-values) set at less than 0.05 (two-sided). According to the results of the analysis, those
patients receiving a NeoCart implant achieved statistically significant improvement (all p-values <0.05) compared to their baseline assessments on the KOOS pain and symptoms subscales, the IKDC Subjective assessment and a visual analog pain
scale, meaning that sufficient data exist to indicate the improvement on each measure is unlikely to have occurred by chance. Furthermore, when this improvement from baseline was compared to the improvement of microfracture from baseline,
NeoCarts improvement was statistically significantly better (all p-values <0.05) than microfractures improvement on over half of the measurements.

Additional comparison of the two groups was performed with the previously described dual-threshold responder analysis we are utilizing in our Phase 3 clinical
trial. To be considered a responder in the Phase 2 clinical trial, a patient must have achieved a minimum improvement on the KOOS pain subscale and the IKDC Subjective assessment compared to his or her baseline scores. The minimum required
improvement for pain was 12 points and the minimum required improvement for function was 20 points.

The selected thresholds have been validated in the
literature as clinically meaningful to patients. In some cases, patients entered the Phase 2 clinical trial with pain scores at a level such that they could not have improved a great deal (for example, a baseline of 91 points on a scale of 100). In
those cases, patients were considered responders if their function scores improved a minimum of 20 points even if their pain scores did not improve the required 12 points. Compared to the microfracture group, significantly more NeoCart-treated
patients responded to treatment at six months, one year and two years. In addition, a majority of Year 1 responders with a NeoCart implant remained responders at Year 3 compared to none of the microfracture responders at Year 1. The difference
in responder rates between the groups favored NeoCart as early as three months post-surgery.

RESPONDER RATE ANALYSIS AT YEAR 1



LOGO



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As shown in the graphic above, at Year 1, the number of NeoCart patients (represented by an O) who
achieved responder status was greater than the number of microfracture patients (represented by an X) who achieved responder status. Many patients far exceeded the minimum dual thresholds required to be considered a responder.

As explained more fully above, some patients entered the Phase 2 clinical trial with minimal pain indicated by a high baseline KOOS pain score. A score of 100
on the KOOS pain scale indicates the patient is reporting no pain. In those few cases, only the change in IKDC Subjective score was used to determine if the patients responded to therapy. In those cases, patients were deemed responders if their
function scores improved a minimum of 20 points even if their pain scores did not improve the required 12 points.

RESPONDER RATE
ANALYSIS AT YEAR 2



LOGO

As shown in the graphic above, at Year 2, the number of NeoCart patients (represented by an O) who achieved
responder status was greater than the number of microfracture patients (represented by an X) who achieved responder status. Many patients far exceeded the minimum dual thresholds required to be considered a responder. Some NeoCart
patients continued to improve compared to their Year 1 results, indicative of durability of response.

As explained more fully above, some patients
entered the Phase 2 clinical trial with minimal pain indicated by a high baseline KOOS pain score. A score of 100 on the KOOS pain scale indicates the patient is reporting no pain. In those few cases, only the change in IKDC Subjective score was
used to determine if the patients responded to therapy. In those cases, patients were deemed responders if their function scores improved a minimum of 20 points even if their pain scores did not improve the required 12 points.



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RESPONDER RATE ANALYSIS AT YEAR 3



LOGO

As shown in the graphic above, at Year 3, the number of NeoCart patients (represented by an O) who achieved
responder status was greater than the number of microfracture patients (represented by an X) who achieved responder status. Many patients far exceeded the minimum dual thresholds required to be considered a responder. Some NeoCart
patients continued to improve compared to their Year 1 and Year 2 results, indicative of durability of response. A microfracture patient also far exceeded the minimum dual thresholds to be considered a responder. This patient had not been in the
responder group prior to Year 3.

As explained more fully above, some patients entered the Phase 2 clinical trial with minimal pain indicated by a high
baseline KOOS pain score. A score of 100 on the KOOS pain scale indicates the patient is reporting no pain. In those few cases, only the change in IKDC Subjective score was used to determine if the patients responded to therapy. In those cases,
patients were deemed responders if their function scores improved a minimum of 20 points even if their pain scores did not improve the required 12 points.



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RESPONDER RATE ANALYSIS AT YEARS 1, 2 AND 3



LOGO

In November 2013, the five-year observation period for Phase 2 trial concluded and we submitted final results in late
2014, with expected publications in 2015 of that data. During the course of the trial, no serious adverse events (expected or unexpected) were considered to be product- or implant-related. Two-year results of this trial were published in theJournal of Bone and Joint Surgery in 2012.

Phase 1 Clinical Trial

A Phase 1 clinical trial was conducted to demonstrate the safety of NeoCart for use when implanted into cartilage defects in the knee with the intention of
repairing the articular cartilage defects. The two-year results of our Phase 1 clinical trial were published in theAmerican Journal of Sports Medicine in 2009. Among the eight patients studied, all of whom enrolled in 2005 and completed five
years of observation, a highly favorable safety profile of NeoCart was documented. The trial was completed in 2010 and final data collection was completed in 2011. Specifically, few reported complications occurred and no serious adverse events
(expected or unexpected) were deemed treatment-related. No cases of infection, implant rejection or immune reaction were documented. Additionally, joint stiffness and implant overgrowth did not occur in any patient. Efficacy signals in the form of
significant improvement in pain and function, measured with patient-reported outcome surveys such as the visual analog pain scale and the IKDC Subjective score, compared to each patients baseline scores were also noted.

Pipeline and NeoCart Indication Expansion

We expect to
build a robust development pipeline by leveraging our regenerative medicine platform and intellectual property portfolio as well as expanding the applications of NeoCart into additional indications.

Although our initial focus for NeoCart is for the treatment of knee cartilage damage, we plan to leverage our regenerative medicine platform to explore the
treatment of chondral defects in other joints, such as the ankle, hip and shoulder. Furthermore, we believe our platform can be utilized to address more extensive cartilage damage associated with significant bone loss and generalized arthritis as
well.

Our acellular scaffolds are capable of hosting cells of any type, which allows us the flexibility to tailor their use for other regenerative
medicine opportunities beyond cartilage repair, including ligament, tendon and meniscus repair. In addition to the potential use of our growth factor variants in optimizing our manufacturing process, our proprietary growth factor variants may be
capable of being used in therapeutic applications such as fracture healing, osteoporosis, generalized osteoarthritis, orphan diseases involving genetically-based bone growth disruption (applicable to our specific variants) and wound healing.



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In September 2014, we entered into our ECC with Intrexon that governs a channel collaboration
arrangement. Pursuant to the ECC we intend to use Intrexons synthetic biology technology platform for the development and commercialization of allogeneic genetically modified chondrocyte cell therapeutics for the treatment or repair of damaged
articular hyaline cartilage in humans.

Commercialization

If NeoCart is approved by the FDA, we plan to build our own commercial organization in the United States to support the launch and commercialization of
NeoCart. The organization will be designed for scalability to support other potential future products as well. For NeoCart, we initially plan to scale up to approximately 40 sales representatives and management after FDA approval. The NeoCart sales
force will target the estimated 4,000 to 5,000 orthopedic surgeons in the United States who may use NeoCart, including a core group of physicians focused on the care of cartilage injuries. We expect this core commercial team to be comprised of
experienced sales representatives with relevant industry experience in the areas of orthopedic surgery and biologics sales. We may also selectively evaluate commercialization strategies, including partnering, for NeoCart outside of the United States
due to challenging economic and reimbursement environments.

Manufacturing

We operate our own cGMP manufacturing facility in Waltham, Massachusetts for the end-to-end production of NeoCart. We currently have adequate capacity in our
Waltham, Massachusetts facility to meet NeoCart clinical demand and we believe we have adequate capacity to meet initial commercial demand if we are successful in receiving regulatory approval for NeoCart in the United States. Our manufacturing
strategy is to own and operate fully integrated cGMP manufacturing operations for commercial production of NeoCart in the event NeoCart receives FDA approval. We expect that the exclusive ownership of our cGMP operations will afford us the potential
for greater optimization, scalability, lower cost of goods and greater control over our supply chain as compared to utilizing one or more third-party manufacturers.

We are in the process of developing our own cGMP manufacturing facility in Lexington, Massachusetts for production of key raw material and components used in
the NeoCart production process and during implantation of NeoCart. Our scaffolds and CT3 bioadhesive will be manufactured at the facility. We also plan to manufacture the collagen raw material used in the production of the scaffold, CT3 bioadhesive
and sterile collagen solution.

NeoCart Manufacturing Process

Our manufacturing process for NeoCart is systematic and organized with specific steps that are tightly controlled. The first step includes receiving a biopsy
from the patients own cartilage from which cartilage cells can be isolated and expanded in number using segregated cell culture technology at our cGMP manufacturing facility in Waltham, Massachusetts. Once we have achieved an adequate
number of cartilage cells, these cartilage cells are placed into a sterile collagen solution provided to us in vials after sterile filtration by a third party contract manufacturer, and then applied to the three-dimensional collagen scaffold.
The scaffold provides an environment for the NeoCart implant to grow and develop into the form ultimately implanted. The scaffold is currently provided to us by a third-party supplier. The development of the NeoCart implant occurs under controlled
conditions in our in our TEP system which exposes the implant to pressure cycles designed to simulate the pressure cycles that cartilage is exposed to in the knee. After development in the TEP system, the implant is placed into a solution that
allows further maturation prior to implantation. Once the implant is mature, it is shipped by a third-party to the clinical site for implantation in the patient, which typically occurs within three to five days after the completion of the
manufacturing process. The manufacturing cycle time, from receipt of biopsy to delivery of the implant, is approximately six to nine weeks. The range in cycle time is dependent upon the variability in growth rate of the cells obtained from
individual patients.



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The quality control laboratory, located within our main Waltham, Massachusetts facility, handles cGMP release
testing for the raw materials, CT3 components and adhesive, the collagen scaffold and final NeoCart implant. Further, our quality control group handles all in-process and finished product environmental monitoring related to the manufacturing
process. Testing is performed pursuant to validated test methods using qualified equipment.

NeoCart Technology and Materials Transfer

Manufacturing of raw materials and components used in the NeoCart supply chain is undergoing a technology transfer from outsourced contract manufacturers,
which we used for clinical manufacturing, to our anticipated new manufacturing facility in Lexington, Massachusetts, which we will use for commercial manufacturing in the event NeoCart is approved by the FDA. This technology transfer extends to the
three components of the CT3 bioadhesivemethylated collagen, curing solution and activated PEGand collagen honeycomb scaffold, which is used in the production of NeoCart. We also plan to transfer production of the collagen raw material
used in some of the NeoCart components to our new facility. Sterile filtration and aseptic filling of our sterile collagen solution used in NeoCart production will continue to be performed by a third-party contract manufacturer. We do not anticipate
changes to raw materials, components, formulations or properties, nor do we anticipate changes to the NeoCart manufacturing process or finished product specifications as a result of the transfer.

Because we are transitioning production of critical raw material and components to our own manufacturing facility for future commercial production, we will be
required to demonstrate to the FDA that the raw collagen material and the components manufactured in the new facility are comparable to those that were used previously in clinical studies. In order to implement the technology transfer prior to
submission of the BLA, we intend to submit an amendment to the existing Investigational New Drug (IND) application file for FDA pre-approval. Prior to submission of this amendment, we obtained FDA feedback and general agreement with our plans via a
formal FDA-Sponsor Type C meeting in December 2014, where we presented technology transfer and comparability plans that included our product test methods, and manufacturing process summaries. Based on internal review and guidance from FDA, we
believe our current strategy to generate and provide comparability data to the FDA for review should be sufficient. Should the FDA determine that additional clinical data is required to confirm comparability, we would collaborate with FDA to develop
a mutually agreeable plan to be executed prior to submitting the BLA.

Intellectual Property

Patent and trade secret protection is critical to our business. Our success will depend in large part on our ability to continue to protect our cell processing
technology, materials science and products for tissue repair through a variety of methods, including seeking, maintaining and defending patents and other intellectual property intended to cover our products and compositions, their methods of use and
processes for their manufacture, our platform technologies, our trade secrets and any other inventions that are commercially important to the development of our business. We actively seek patent protection in the United States and select foreign
countries.

Our intellectual property portfolio is currently composed of 23 issued patents and 11 patent applications in the United States that we own,
and 23 issued patents and three patent applications in the United States that we license from academic institutions and business entities. We also have over 100 counterpart patent and patent applications owned or licensed in certain foreign
jurisdictions. This portfolio of owned and in-licensed patents and patent applications covers aspects of: our implants, including NeoCart and our protein implants; our tissue engineering processor; our adhesives; our growth factors, methods of
delivery of therapeutic agents and promoters for increased expression of protein; our method for treatment of ligament and tendon injuries; surgical tools for placing our implants; and our bone composites. The patents that cover the listed
technologies have statutory expiration dates between 2015 and 2030.

We have entered into license agreements with various academic institutions and
business entities to obtain the rights to use certain patents and patent applications for the development and commercialization of our technology



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and products. We also rely on know-how and continuing technological innovation to develop and maintain our proprietary position.

We license from Purpose Co., Ltd. (f/k/a Takagi Sangyo Co. Ltd. and f/k/a Takagi Industrial Co., Ltd.) (Purpose) an exclusive right to 18 issued patents and
11 pending patent applications relating to an exogenous tissue processor. Through this agreement, we have a sublicense to three issued U.S. patents and six issued foreign patents owned by Brigham and Womens Hospital, Inc. (BWH) and Purpose
that relate to compositions and methods for preparing multi-layered tissue constructs that include a cellular support matrix seeded with living cells derived from a native tissue and tissue culture protocols to promote the in vitro growth of tissues
and tissue constructs. We also have an exclusive license to two issued U.S. patents and one pending U.S. patent application for restoration of articular cartilage matrix from the Board of Trustees of The Leland Stanford Junior University. The
patents that have issued or may yet issue that have been licensed to us under these agreements will have statutory expiration dates between 2021 and 2030.

We have an exclusive license to a portfolio consisting of four families of issued patents and pending patent applications owned by Angiotech Pharmaceuticals
(US), Inc. and Angiodevice International GmbH. This exclusivity is for CT3 for use in combination with intellectual property for the repair of articular cartilage, ligament, meniscus or tendon damage. The patents relate to a method of introducing
rapidly gelling biodegradable collagen-PEG hydrogel to the site of injury, methods of inducing meniscal regeneration by introducing a strong adhesive to a site of injury and methods for in situ repair in which the meniscal injury is filled with an
adhesive hydrogel complex consisting of methylated PEG and in which the injury is filled with the adhesive hydrogel complex and a collagen matrix. Any patents within this portfolio that have issued or may yet issue will have statutory expiration
dates between 2014 and 2019.

We have an exclusive license to a portfolio of three patent families relating to growth factors and high level expression of
heterologous proteins owned by Yeda Research and Development Co., Ltd. Any patents within this portfolio that have issued or may yet issue will have statutory expiration dates between 2016 and 2023.

We continually assess and refine our intellectual property strategy in order to fortify our position in our target markets. We cannot ensure that patents will
be granted with respect to any of our pending owned or in-licensed patent applications or with respect to any patent applications we may own or license in the future, nor can we be sure that any of our existing owned or in-licensed patents or any
patents we may own or license in the future will be useful in protecting our technology. Please see Risk FactorsRisks Related to Our Intellectual Property for additional information on the risks associated with our intellectual
property strategy and portfolio.

Material Technology License Agreements

Purpose Co., Ltd.

In June 2012, we amended
and restated a license agreement with Purpose. Under the amended and restated agreement, Purpose granted us an exclusive, perpetual, paid-up, worldwide and sublicensable license outside of Japan to (1) make, use and sell products or services
covered by claims of Purposes patents and (2) use and create derivative works of Purposes technology for the design, development, manufacture, testing, support and commercialization of any product or service that incorporates or
builds upon Purposes technology, in each case, only in connection with articular cartilage, ligaments, tendons and meniscus. Under the agreement, we grant Purpose an exclusive, perpetual, paid-up, sublicensable right solely in Japan under our
patents and technology relating to the biotechnology and biomaterials of NeoCart and two other products in development to (1) make, use and sell products or services covered by claims of our patents and (2) use and create derivative works
of our technology for the design, development, manufacture, testing, support and commercialization of any product or service that incorporates or builds upon our technology in each case, only in connection with articular cartilage, ligaments,
tendons and meniscus. Purpose reserves the right to sell its single unit exogenous tissue processer machines to research institutes for general but noncommercial use anywhere in the world.



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We paid Purpose JP¥19,572,000 (approximately $250,000 based on an exchange rate of JP¥0.0128/dollar as of
September 30, 2012) for costs Purpose incurred in developing a multi-unit exogenous tissue processor machine. As described below, we are obligated to pay royalties and milestone payments due on the Brigham and Womens Hospital, Inc.
(BWH)-Purpose license. Our obligation to pay royalties due on the BWH-Purpose license is limited to such royalties measured by our revenue. Upon written notice to Purpose of our intent to stop using the technology in the BWH-Purpose license
sublicensed to us, Purpose will reassume all responsibility under the BWH-Purpose license. Concurrent with our entering into the amended and restated license agreement with Purpose, we agreed, in the case of an initial public offering that we or our
stockholders that are parties to the second amended and restated stockholders agreement will issue to Purpose immediately upon the effectiveness of our initial public offering a number of shares equal to up to 7.8125% of our equity value
at the time of the offering, less our costs in connection with such offering, the amount of any of our debt and the amount of the liquidation preference of the Series A Preferred and Series A-1 Preferred shares issued to certain of our stockholders.
In connection with our initial public offering, we issued Purpose 55,620 shares of our common stock in full satisfaction of this obligation.

Under the
amended and restated agreement, Purpose agreed to continue to manufacture and sell single unit exogenous tissue processor machines to us. We are obligated to cooperate with Purpose, at Purposes expense, in its efforts to commercialize all or
any portion of NeoCart and two other products in development in connection with articular cartilage, ligaments, tendons and meniscus and obtain governmental approvals required for the manufacture and sale in Japan of NeoCart and two other products
in development. In addition, we are required to supply Purpose with collagen scaffold and CT3.

Purpose exclusively sublicensed to us its rights and
obligations under the BWH-Purpose license. Under the Purpose-BWH license agreement, BWH granted Purpose an exclusive, royalty-bearing, worldwide, sublicensable license, under its rights in licensed patents and patent applications co-owned by BWH and
Purpose, to make, use and sell (1) apparatuses for cultivating a cell or tissue, (2) tissue or cell products made using such apparatuses, (3) tissue or cell products made using processes for cultivating a cell or tissue as disclosed
in the licensed patents and patent applications and (4) any apparatus that cultivates cells or tissues using such processes, in each case, whose manufacture, use, or sale is covered by the claims of the licensed patents and patent applications,
only for therapeutic use. BWH may terminate this agreement if Purpose, itself or through its sublicensees, does not achieve commercial distribution and sale of the licensed products in the United States by December 31, 2015, subject to a
one-year extension upon Purpose paying BWH $10,000.

Pursuant to our sublicense from Purpose, we are obligated to pay royalties and milestone payments and
sublicense payments due on the BWH-Purpose license agreement. We have paid minimum royalty amounts of $180,000 and sublicense payments of $125,000 through December 31, 2014. Purpose agreed to pay BWH a royalty rate in the low single digits of
our net sales of licensed products, subject to a minimum of $20,000 annually, until the license agreement terminates or until royalty payments no longer have to be made. Purpose is obligated to make one additional sublicense payment of $25,000 and
milestone payments to BWH of (1) $75,000 upon the first patient treated in Phase 3 clinical trials for each licensed product or licensed process and (2) $75,000 upon final FDA approval for each licensed product or licensed process.

The agreement remains in effect for the life of the licensed patents, expected to be until October 19, 2028. Purpose may terminate the agreement by
providing written notice to BWH at least 60 days in advance. BWH has the right to terminate the agreement if Purpose fails to make minimum royalty payments or other payments or otherwise breaches the agreement and such breach is not cured within 30
days of BWH providing notice to Purpose. Upon termination of the BWH-Purpose license agreement, our sublicense will convert to a nonexclusive license to Purposes interest in the licensed products or processes. Upon written notice to Purpose of
our intent to stop using the technology sublicensed to us in the BWH-Purpose license, Purpose will reassume all responsibility under the BWH-Purpose license.



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Angiotech Pharmaceuticals (US), Inc. and Angiodevice International GmbH

In May 2005, we entered into a worldwide license agreement with Angiotech Pharmaceuticals (US), Inc. and Angiodevice International GmbH (collectively,
Angiotech) for the right, under Angiotechs licensed patents and patent applications and technical information, to make, use and sell any product that includes both our intellectual property and CT3 for the repair of articular cartilage,
ligament, meniscus or tendon damage, including related osteochrondal defects. The license excludes any product in which one nonliving ingredient is included in CT3 for the primary purpose of producing a physiological, metabolic or biological effect
in mammals. The license grant was made exclusive under the fifth amendment to the license agreement that came into effect in August 2010 after we paid $1.0 million to Angiotech. We have obligations to supply CT3 to Angiotech under certain terms
and conditions, and Angiotech is entitled to use any data and results obtained from any clinical studies conducted by us with respect to CT3.

As a
license fee, we issued to Angiotech certain warrants to purchase from us shares of common stock, subject to certain anti-dilution protections. These warrants are no longer outstanding. We paid $1.0 million to Angiotech to make the license grant
under the agreement exclusive. In addition, we paid four annual patent fees of $50,000 each as of December 31, 2014. We are also obligated to pay an additional fee of $3.0 million within 30 days after we receive regulatory approval from the FDA
for a licensed product. As further consideration for the license, we also agreed to pay royalties at percentage rates of single digits of net sales of NeoCart and certain other products. We were able to reduce royalties from percentage rates of net
sales in the double digits to this rate after making revenue share reduction payments that totaled $2.0 million.

The agreement terminates on the
earlier of May 12, 2035 and expiration of all royalty payment obligations under the agreement. Either party has the right to terminate the agreement if the other party materially breaches the agreement and fails to cure such breach within 30
days from the date of notice of such breach (ten days in the case of non-payment). We may also terminate the agreement by giving at least one years notice. Angiotech may also terminate the agreement if we or any of our affiliates or
sublicensees challenge the validity of Angiotechs patents rights or rights to improvements (or directly or indirectly support any such challenge), or if we are acquired by or merge with a third party that has developed or is marketing, or has
an affiliate that has developed or is marketing, a competitive product prior to such acquisition or merger and the resulting or surviving entity post-acquisition or merger fails to either continue to develop or sell licensed product at a level
reasonably similar to the development or sale that was occurring prior to the acquisition or merger, during the six-month period following the acquisition or merger. Competitive product means, in a given country, (1) a drug or biologic approved
for marketing or in Phase 3 clinical development, (2) a 510(k), or foreign equivalent, device approved for marketing, or (3) an FDA Premarket Approval, or foreign equivalent, device approved for marketing or in pivotal study clinical
development, other than a licensed product, that acts (or is being developed to act) for one or more target label indications substantially similar to one or more approved or target label indications for a licensed product.

Koken Co., Ltd.

In March 2013, we entered
into a license agreement with Koken Co., Ltd. (Koken) for a non-exclusive, non-transferable and non-sublicensable right to use its know-how related to the process for manufacturing atelocollagen honeycomb
sponge materials, which we use in our scaffolds. Pursuant to the agreement, we paid Koken a fee in March 2013 for such right. Koken may terminate this agreement if we fail to perform any obligation under the agreement and such failure remains
uncured for more than 30 days, if we become insolvent, bankrupt, go into liquidation or receivership, or if we file for bankruptcy or a petition in bankruptcy is filed against us.

The Board of Trustees of The Leland Stanford Junior University

In April 2001, we entered into a license agreement with The Board of Trustees of The Leland Stanford Junior University (Stanford) for patent rights
relating to the restoration of articular cartilage. Our agreement with Stanford provides us with a worldwide license to make and sell products covered by claims of the licensed



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patents for growth, ontogenesis, and regeneration of cartilaginous tissues and collagen. Under the agreement, Stanford agreed not to grant further licenses to such rights in such field.

We paid Stanford $30,000 upon execution of the agreement and, as of December 31, 2014, $385,000 as reimbursement for patent-related costs incurred by
Stanford. We are required to pay Stanford a yearly royalty fee of $10,000, which is creditable against earned royalty payments due on net sales of that year. We have paid $130,000 in yearly royalty fees through December 31, 2014. Stanford is
also entitled to a low single digit percentage rate of our net sales in royalties. We paid Stanford milestone payments of $35,000 upon issuance of the first licensed patent and $50,000 upon initiation of Phase 1 clinical trials of the licensed
product in the first field that requires separate regulatory authority clinical approval. We have paid Stanford a milestone payment of $50,000 upon initiation of Phase 1 clinical trials of the licensed product in other fields that requires separate
regulatory authority clinical approval, and are obligated to pay an additional milestone payment of $300,000 upon FDA marketing approval of the first licensed product.

The agreement terminates on the date that the last of the licensed patents expire, expected to be January 25, 2021. We may terminate the agreement by
giving Stanford notice in writing at least 30 days in advance of the date of termination. Stanford has the right to terminate the agreement if we are in default in payment of royalty or providing of reports, if we are in breach of any other
provisions of the agreement, or if we provide a false report to Stanford, and in each case, we fail to remedy such default, breach or false report within 30 days after written notice thereof. We are obligated to have licensed products relating to
growth, ontogenesis and regeneration of cartilaginous tissue available for commercial sale by December 31, 2015. If we fail to fulfill such obligation, Stanford may terminate our rights with respect to the applicable part of the field of use.
Stanford may also terminate the agreement if we or our sublicensees have not sold licensed products for a continuous period of one year after the first commercial sale of licensed products.

Yeda Research and Development Co., Ltd.

In
January 2008, we entered into an exclusive license agreement with Yeda Research and Development Co., Ltd. (Yeda) for rights relating to high level expression of heterologous proteins and plasmid p80 BS, which rights are jointly owned by Yeda
and us. Under our agreement, Yeda granted us an exclusive worldwide license under its rights for the manufacture, use and sale of heterologous proteins and plasmid p80 BS.

We are required to pay Yeda a yearly license fee of $2,000 for the life of the license, which is creditable against royalties payable by us to Yeda during the
one-year period in respect of which such fee was paid. Yeda is entitled a royalty fee of a low single digit percentage rate of our net sales of the licensed products, a low single digit percentage rate of our net sales for combination products
(meaning the combination of the licensed product with at least one other active ingredient, material or medical device that would have a clinical effect if administered independently) and a low double digit percentage rate of all of our sublicensing
receipts.

The agreement terminates on a country-by-country, licensed product-by-licensed product basis on the later of (a) the date of expiration in
such country of the last licensed patent covering the applicable licensed product and (b) ten years from the date of the first commercial sale of the first licensed product in that country, or, if there have not been any sales in such country,
ten years from the date of the first commercial sale of the licensed product worldwide. Either party may terminate the agreement by written notice if there is an uncurable material breach or a material breach that is not cured within 30 days
(14 days in the case of non-payment).

Advanced BioMatrix, Inc.

In April 2014, we entered into an agreement with Advanced BioMatrix, Inc. (ABM) for a nonexclusive, nontransferable (except as expressly provided in the
agreement), non-sublicensable (except as provided in the agreement), perpetual, irrevocable, worldwide, royalty-free right and license to use its technology related to certain collagen solutions and to make, use, sell and otherwise exploit collagen
solutions produced using such technology, solely for the development and commercialization, including generation, implantation and use, of



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engineered tissue and biomaterials in the field of orthopedics. Pursuant to the agreement, we paid fees in April and November 2014 and will pay an additional fee plus reimburse ABM for mutually
agreed upon expenses for such rights and services to be performed by ABM for us in connection with such technology. This agreement will remain in effect until we or ABM provides written notice to terminate the agreement. Either party may terminate
the agreement if the other party materially breaches any material term of the agreement and fails to cure such breach within 45 days after receiving notice of such breach.

Intrexon Corporation

In September 2014, we
entered into our ECC with Intrexon governing a channel collaboration arrangement in which we will use Intrexons current and future proprietary technology directed towards the design, identification, culturing and/or production of
genetically modified cells (Technology). The ECC grants us an exclusive worldwide license to utilize Intrexons Technology to develop and commercialize allogeneic genetically modified chondrocyte cell therapeutics for the treatment or repair of
damaged articular hyaline cartilage in humans. Under the ECC, we agreed that we would not pursue, outside of our relationship with Intrexon, the utilization of any synthetic biology platform in conjunction with a universal cell line for the
development or commercialization of any products for the purpose of treating and/or repairing damaged articular hyaline cartilage in humans where such products would compete with commercial products resulting from our collaboration with Intrexon.

Contemporaneously with entering into the ECC, we issued a 6% convertible promissory note (the Note) in the principal amount of $10.0 million as partial
consideration for the execution and delivery of our ECC with Intrexon. The Note converted into 918,206 shares of our common stock in connection with our initial public offering.

The ECC provides for the establishment of committees comprised of equal numbers of representatives from Intrexon and our company that will govern activities
in the areas of project establishment, chemistry, manufacturing and controls, clinical and regulatory matters, commercialization efforts and intellectual property.

Pursuant to the ECC, we are responsible for the research and development costs incurred by Intrexon associated with the development of product candidates
developed under our collaboration, the effect of which may increase the level of our overall research and development expenses. Subject to certain exceptions, we will be responsible for, among other things, funding the further anticipated
development of cell lines toward the goal of commercialization, conducting preclinical and clinical development of candidate product(s), as well as for other aspects of manufacturing and the commercialization of the product(s). Among other things,
Intrexon will be responsible for technology discovery efforts and cell line development. We will reimburse Intrexon for 50% of the costs it incurs under the ECC pursuant to a jointly agreed upon work plan prior to the acceptance by the FDA or
equivalent regulatory agency in an applicable jurisdiction of an IND or equivalent regulatory filing for a collaboration product, and the remaining 50% of such costs after such filing acceptance by the FDA or equivalent regulatory authority.

We will pay Intrexon a royalty fee of a low double digit percentage of the gross profit derived from the sale of products developed from ECC. We will also pay
Intrexon an intermediate double digit percentage of sublicensing revenue we may receive pursuant to certain conditions set forth in the ECC.

We have also
agreed to make certain payments to Intrexon upon our achievement of designated commercialization and sales milestones in the form of shares of our common stock (based upon the fair market value of the shares otherwise required to be issued) or, at
our option, a cash payment. The amounts payable upon milestone events are as follows:



| |  |  | $500,000 within 30 days of the first instance of the achievement of the IND Filing Milestone Event;
| | - |  | ---------------------------------------------------------------------------------------------------



| |  |  | $2,500,000 within 30 days of the first instance of the achievement of the IND Acceptance Milestone Event;
| | - |  | ---------------------------------------------------------------------------------------------------------



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| |  |  | $3,000,000 within 30 days of the first instance of the achievement of the Phase III Milestone Event;
| | - |  | ----------------------------------------------------------------------------------------------------



| |  |  | $5,000,000 within 30 days of the first instance of the achievement of the Approval Milestone Event; and
| | - |  | -------------------------------------------------------------------------------------------------------



| |  |  | $1,000,000 within 30 days of each instance of the achievement of the Approval Amendment Milestone Event.
| | - |  | --------------------------------------------------------------------------------------------------------

The
cumulative sales milestones from the sale of products developed under the ECC are as follows:



| |  |  | $5,000,000 within 30 days of the first instance that cumulative net sales reach $300,000,000;
| | - |  | ---------------------------------------------------------------------------------------------



| |  |  | $7,500,000 within 30 days of the first instance that cumulative net sales reach $650,000,000; and
| | - |  | -------------------------------------------------------------------------------------------------



| |  |  | $10,000,000 within 30 days of the first instance that cumulative net sales reach $1,000,000,000.
| | - |  | ------------------------------------------------------------------------------------------------

In the event
that we consummate an acquisition of our company prior to paying to Intrexon any one or more of the milestone payments and the ECC is transferred or assigned to the buyer in connection with such acquisition, then all subsequent milestone payments
will thereafter each be payable only in cash to Intrexon.

The ECC shall continue until it is terminated pursuant to certain triggering events, as
specified in the ECC. We may voluntarily terminate the ECC at any time upon 90 days written notice to Intrexon. Either party may terminate the ECC upon 60 days written notice following a material breach, and failure to cure such breach
by the other party. Intrexon may also terminate the ECC if: we fail to pursue therapies demonstrably superior to existing therapies and those under development by us using the Technology to commercialize products under the ECC; or we attempt to
assign the ECC, other than as permitted under the ECC.

Upon termination of the ECC, we may continue to develop and commercialize any product developed
under the ECC that, at the time of termination satisfies at least one of the following criteria: (i) the product is being sold by us triggering profit sharing payments under the ECC to Intrexon; (ii) the product has received regulatory
approval; (iii) the product is a subject of an application for regulatory approval in the field covered by the ECC that is pending before the applicable regulatory authority; and (iv) the particular product is the subject of at least an
ongoing or completed human clinical trial wherein the product was implanted into at least one patient.

Competition

The regenerative medicine industry is characterized by innovative science, rapidly advancing technologies and a strong emphasis on proprietary products. While
we believe that our technology, development experience, scientific knowledge and intellectual property portfolio provide us with competitive advantages, we face potential competition from many different sources, including major pharmaceutical,
specialty pharmaceutical, biotechnology and regenerative medicine companies, academic institutions, governmental agencies and public and private research institutions.

The competitive landscape in the field of articular cartilage repair is emerging and has stimulated a substantial amount of interest from companies developing
tissue repair solutions. Companies have employed a variety of approaches to meet the goals of cartilage repair. The approaches, which represent the scientific evolution of the field, can be generally categorized in five ways:
(1) non-cell-based, such as Arthrosurfaces HemiCAP; (2) uncultured cell-based (with or without scaffold), such as Zimmers DeNovo NT, Arthrexs BioCartilage and Osiris Cartiform, distributed exclusively with Arthrex;
(3) cultured cell-based (without scaffold), such as Vericels Carticel and ISTOs RevaFlex; (4) cultured cell- and scaffold-based, such as Vericels MACI and the Aesculap division of B. Braun Medicals NovoCart 3D; and
(5) cultured cell- and scaffold-based incorporating tissue engineering, such as NeoCart.

For knee cartilage repair and regeneration, the market is
large and growing, driven by more knee injuries in an increasingly active population. Worldwide, many products are commercially available, but the majority of these



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products are currently only available in the EEA, with Carticel, which was approved by the FDA in 1997, whose label restricts it for use in salvage cases, being the only cartilage repair product
to gain U.S. approval through a regulated path to market. RevaFlex and NovoCart 3D are in U.S. clinical development, which, based on our internal analysis of publicly available information, we believe may be approved in 2023 and 2020, respectively,
but their early clinical data has not been published in highly regarded peer-reviewed journals. Vericels MACI has completed European clinical studies and Vericel has initiated discussions with the FDA regarding potential regulatory pathways
and approval in the U.S., the timing and outcome of which is uncertain. Although minimally-modified cells such as DeNovo NT, which launched in the United States in 2007, and acellular cartilage matrix products such as Cartiform and Arthrexs
BioCartilage and are available in the United States, their path to market did not require a rigorous regulatory path and their clinical data to date has been sparse and commercial uptake limited. Product-less procedures such as debridement and
microfracture continue to dominate the U.S. market.

Any product candidates that we successfully develop and commercialize will compete with existing
therapies and new therapies that may become available in the future. Our competitors may have substantially greater financial, technical and human resources that could put them at an advantage in the development of safe and efficacious products and
may help them obtain regulatory approval for their products more rapidly, as well as achieve more widespread market acceptance. We believe, however, the competitive benefits of NeoCart will allow us to position NeoCart effectively as a strong
contender in the tissue repair market.

Outside the United States, many procedures and products for cartilage repair are available. However, we anticipate
that many of these are unlikely to seek approval in the United States because of the rigorous and lengthy regulatory path a sponsor must pursue in order to access the market and the high-quality superiority data that must be produced. Additionally,
other than the few currently approved U.S. products, to our knowledge no other known European cartilage product to date has any clinical experience or data in U.S. patients.

Government Regulation

Regulatory Background on
Autologous Cellular Products

The FDA does not apply a single regulatory scheme to human tissues and the products derived from human tissue. On a
product-by-product basis, the FDA may regulate such products as drugs, biologics, or medical devices, in addition to regulating them as human cells, tissues, or cellular or tissue-based products (HCT/Ps), depending on whether or not the particular
product triggers any of an enumerated list of regulatory factors. A fundamental difference in the treatment of products under these classifications is that the FDA generally permits HCT/Ps that do not trigger any of those regulatory factors to be
commercially distributed without marketing approval. In contrast, products that trigger those factors, such as if they are more than minimally manipulated when processed or manufactured, are regulated as drugs, biologics, or medical devices and
require FDA approval. The FDA has designated NeoCart as a biologic under the jurisdiction of the Center for Biologics Evaluation and Research and market access or approval will require BLA approval.

In 1997, the FDA began requiring BLA filing for autologous cellular products and approved the already-marketed Carticel contingent on further clinical trials.
In 2000, Carticels indication narrowed to second-line therapy for patients with inadequate response to prior treatment. The FDA now requires evidence of clinical efficacy against approved and validated endpoints and standard of care control
arm as outlined in their final guidance on the subject of cartilage repair.

The grant of marketing authorization in the EEA for products containing
viable human tissues or cells such as NeoCart is governed by Regulation 1394/2007/EC on advanced therapy medicinal products, read in combination with Directive 2001/83/EC of the European Parliament and of the Council, commonly known and the
Community code on medicinal products. Regulation 1394/2007/EC lays down specific rules concerning the authorization, supervision and pharmacovigilance of gene therapy medicinal products, somatic cell therapy medicinal products and tissue engineered
products. Manufacturers of advanced therapy medicinal products must demonstrate the quality, safety and efficacy of their products to the European Medicines Agency (EMA), which is required to provide an opinion regarding the application for
marketing authorization. The European Commission grants or refuses marketing authorization in light of the opinion delivered by the EMA.



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Applicants for marketing authorization for medicinal products in the EEA are required to submit applications for
marketing authorization based on the ICH Common Technical Document and must demonstrate the safety, quality and efficacy of the medicinal product for which the marketing authorization is sought. The application must include the results of
pre-clinical tests and clinical trials conducted with the medicinal product. The conduct of clinical trials in the EEA is governed by Directive 2001/20/EC which imposes obligations and procedures that are similar to those provided in applicable U.S.
laws. The obligations provided in the European Union (EU) Good Clinical Practice rules and EU Good Laboratory Practice must also be respected during conduct of the trials. Clinical trials must be approved by the competent regulatory authorities and
the competent Ethics Committees in the EU Member States in which the clinical trials take place. Moreover, applicants are required to demonstrate that studies have been conducted with the medicinal product in the pediatric population as provided by
a Pediatric Investigation Plan approved by the Pediatric Committee of the EMA. Alternatively, confirmation that the applicant has obtained a waiver or deferral for the conduct of these studies must be provided.

Anticipated FDA Regulatory and Approval Process for NeoCart

We anticipate NeoCart, if approved, to be the first autologous cell- and scaffold-based product in the U.S. market to have been studied in a randomized
controlled trial with a rigorous responder analysis under an approved SPA.

The FDA approved the NeoCart Phase 3 study design under the SPA process and
concluded that the trial design and planned analyses  sufficiently address the studies objectives  these studies are adequately designed to provide the necessary data that  could support a license application
submission. We anticipate the SPA to be binding on the FDA review division, with limited exceptions provided by FDA guidance, such as the FDA determines that a substantial issue essential to determining the safety or efficacy of the
[product] has been identified after the testing has begun, or if we fail to follow the agreed-upon protocol.

Reimbursement

In both domestic and foreign markets, sales of any regulatory-approved products depend in part upon the availability of reimbursement from third-party payors.
Third-party payors include government health programs, such as Medicare and Medicaid, private health insurers and managed care providers, and other organizations. Reimbursement policy involves coding, coverage and payment decisions and our business
strategy is to produce the necessary information for optimal decision-making by payors.

Coding: While reimbursement policy for NeoCart is
uncertain at this point, we believe that the existing Current Procedural Terminology, Healthcare Commission Procedure Coding System and International Classification of Diseases, Ninth Edition coding options for ACI are sufficiently broad that they
could apply to NeoCart.

Coverage: Our goal is to demonstrate improved health outcomes (e.g., improved patient outcomes and quality of life
on several parameters, lower total costs including lower overall utilization of healthcare services and faster return to work) for patients receiving NeoCart compared to microfracture, an important element in securing coverage decisions by payors
(Medicare and private payors).

Payment: Analysis of recent trends in ACI coverage (discharge data) suggest that patients between
18 and 64 years of age constitute the majority of the market for ACI, resulting in a market dominated by private payors. Only 10% to 20% of ACI patients are estimated to be 65 years of age and older. While limited data is available for private
payor reimbursement of ACI, these payors typically reimburse inpatient procedures with bundling mechanisms similar to Medicare Severity Diagnosis Related Groups. In addition, some private payors also tend to use Medicare rates as benchmarks when
setting their own fee schedules. In preparation for the potential launch of NeoCart, if ever, we are developing a reimbursement dossier to facilitate the introduction of NeoCart into the marketplace. In November 2014, we submitted a protocol
amendment to the FDA to augment additional Health Economics Outcomes Research data to further support our future reimbursement initiatives. These data would collect additional key economic data and outcomes associated with quality of life,
productivity and return to work status, and healthcare resource utilization related to direct and indirect costs. Upon receipt of this data we



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plan to provide objective clinical data, patient-reported quality of life data and health economic data demonstrating NeoCarts value to assist in optimizing payment decisions for NeoCart.

Government Regulation Overview

United
States

Overview

In the United
States, the FDA regulates biological products under the Federal Food, Drug, and Cosmetic Act and the Public Health Service Act and related regulations. Biological products are also subject to other federal, state, local, and foreign statutes and
regulations. The FDA and comparable regulatory agencies in state and local jurisdictions and in foreign countries impose substantial requirements upon the clinical development, manufacture and marketing of biological products. These agencies and
other federal, state, local, and foreign entities regulate research and development activities and the testing, manufacture, quality control, safety, effectiveness, packaging, labeling, storage, distribution, record keeping, reporting, approval,
advertising and promotion of our products. Failure to comply with the applicable U.S. regulatory requirements at any time during the product development process, including clinical testing, approval process or after approval may subject an applicant
to administrative or judicial sanctions.

Government regulation may delay or prevent marketing of product candidates for a considerable period of time and
impose costly procedures upon our activities. The testing and approval process requires substantial time, effort, and financial resources, and we cannot be certain that the FDA or any other regulatory agency will grant approvals for NeoCart or any
future product candidates on a timely basis, if at all. The FDAs policies may change and additional government regulations may be enacted that could prevent or delay regulatory approval of NeoCart or any future product candidates or approval
of new disease indications or label changes. We cannot predict the likelihood, nature or extent of adverse governmental regulation that might arise from future legislative, judicial, or administrative action, either in the United States or abroad.

Marketing Approval

The process
required by the FDA before biological products may be marketed in the United States generally involves the following:



| |  |  | completion of nonclinical laboratory and animal tests according to good laboratory practices, and applicable requirements for the humane use of laboratory animals or other applicable regulations;
| | - |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | submission to the FDA of an IND application which must become effective before human clinical trials may begin;
| | - |  | ---------------------------------------------------------------------------------------------------------------



| |  |  | performance of adequate and well-controlled human clinical trials according to the FDAs regulations commonly referred to as good clinical practices (GCP), and any additional requirements for the protection of
human research patients and their health information, to establish the safety and efficacy of the proposed biological product for its intended use or uses;
| | - |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | submission to the FDA of a BLA for marketing approval that includes substantive evidence of safety, purity, and potency from results of nonclinical testing and clinical trials;
| | - |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | satisfactory completion of an FDA pre-approval inspection of manufacturing facilities where the biological product is produced to assess compliance with good manufacturing practices (GMP) to assure that the facilities,
methods and controls are adequate to preserve the biological products identity, strength, quality and purity and, if applicable, the FDAs current good tissue practices (GTP) for the use of human cellular and tissue products to prevent
the introduction, transmission or spread of communicable diseases;
| | - |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | potential FDA audit of the nonclinical study sites and clinical trial sites that generated the data in support of the BLA; and
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| |  |  | FDA review and approval, or licensure, of the BLA, which must occur before a biological product can be marketed or sold.
| | - |  | ------------------------------------------------------------------------------------------------------------------------

U.S. Biological Products Development Process

Before testing any biological product candidate in humans, the product candidate enters the nonclinical testing stage. Nonclinical tests include laboratory
evaluations of product chemistry, toxicity and formulation, as well as animal studies to assess the potential safety and activity of the product candidate. The conduct of the nonclinical tests must comply with federal regulations and requirements
including good laboratory practices.

Prior to commencing the first clinical trial, the clinical trial sponsor must submit the results of the nonclinical
tests, together with manufacturing information, analytical data, any available clinical data or literature and a proposed clinical protocol, to the FDA as part of an initial IND application. Some nonclinical testing may continue even after the IND
application is submitted. The IND application automatically becomes effective 30 days after receipt by the FDA unless the FDA, within the 30-day time period, raises concerns or questions about the conduct of the clinical trial and places the
clinical trial on a clinical hold. In such case, the IND application sponsor must resolve any outstanding concerns with the FDA before the clinical trial may begin. Further, an IRB for each site proposing to conduct the clinical trial must review
and approve the plan for any clinical trial before it commences at that site. An IRB is charged with protecting the welfare and rights of study subjects and considers such items as whether the risks to individuals participating in the clinical
trials are minimized and are reasonable in relation to anticipated benefits. The IRB also approves the form and content of the informed consent that must be signed by each clinical trial subject or his or her legal representative and must monitor
the clinical trial until completed. The FDA or IRB may impose clinical holds on a biological product candidate at any time before or during clinical trials due to safety concerns or non-compliance. If the FDA imposes a clinical hold, trials may not
recommence without FDA or IRB authorization and then only under terms authorized by the FDA and IRB. Accordingly, we cannot be sure that submission of an IND application will result in the FDA allowing clinical trials to begin or that, once begun,
issues will not arise that will result in the suspension or termination of such trials.

Clinical trials involve the administration of the biological
product candidate to healthy volunteers or patients under the supervision of qualified investigators, generally physicians not employed by or under the trial sponsors control. Clinical trials are conducted under protocols detailing, among
other things, the objectives of the clinical trial, dosing procedures, subject selection and exclusion criteria, and the parameters to be used to monitor subject safety, including stopping rules that assure a clinical trial will be stopped if
certain adverse events should occur. Each protocol and any amendments to the protocol must be submitted to the FDA as part of the IND application and to the IRB.

For purposes of BLA approval, human clinical trials are typically conducted in three sequential phases that may overlap:



| |  |  | Phase 1The biological product is initially introduced into healthy human patients and tested for safety. In the case of some products for severe or life-threatening diseases, especially when the product may be too
inherently toxic to ethically administer to healthy volunteers, the initial human testing is conducted in patients. These trials may also provide early evidence on effectiveness.
| | - |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Phase 2These trials are conducted in a limited number of patients in the target population to identify possible adverse effects and safety risks, to preliminarily evaluate the efficacy of the product for
specific targeted diseases and to determine dosage tolerance and optimal dosage. Multiple Phase 2 clinical trials may be conducted by the sponsor to obtain information prior to beginning larger and more expensive Phase 3 clinical trials.
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Phase 3Phase 3 trials are undertaken to provide statistically significant evidence of clinical efficacy and to further evaluate dosage, potency and safety in an expanded patient population at multiple clinical
trial sites. They are performed after preliminary evidence suggesting effectiveness of the product has been obtained, and are intended to establish the overall benefit-risk relationship of the investigational product and to provide an adequate basis
for product approval and labeling.
| | - |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



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Post-approval clinical trials, sometimes referred to as Phase 4 clinical trials, may be conducted after initial
marketing approval. These trials may be required by the FDA as a condition of approval and are used to gain additional experience from the treatment of patients in the intended therapeutic indication, particularly for long-term safety follow-up. The
FDA now has express statutory authority to require post-market clinical trials to address safety issues. All of these trials must be conducted in accordance with GCP requirements in order for the data to be considered reliable for regulatory
purposes.

During all phases of clinical development, regulatory agencies require extensive monitoring and auditing of all clinical activities, clinical
data and clinical trial investigators. Annual progress reports detailing the results of the clinical trials must be submitted to the FDA. Written IND safety reports must be promptly submitted to the FDA and the investigators for serious and
unexpected adverse events; any findings from other studies, tests in laboratory animals or in vitro testing that suggest a significant risk for human patients; or any clinically important increase in the rate of a serious suspected adverse reaction
over that listed in the protocol or investigator brochure. The sponsor must submit an IND safety report within 15 calendar days after the sponsor determines that the information qualifies for reporting. The sponsor also must notify the FDA of any
unexpected fatal or life-threatening suspected adverse reaction within seven calendar days after the sponsors initial receipt of the information.

Phase 1, Phase 2 and Phase 3 clinical trials may not be completed successfully within any specified period, if at all. Regulatory authorities, a data safety
monitoring board or the sponsor may suspend a clinical trial at any time on various grounds, including a finding that the participants are being exposed to an unacceptable health risk. Similarly, an IRB can suspend or terminate approval of a
clinical trial at its institution if the clinical trial is not being conducted in accordance with the IRBs requirements or if the biological product has been associated with unexpected serious harm to patients.

Our ongoing and planned clinical trials for our product candidates may not begin or be completed on schedule, if at all. Clinical trials can be delayed for a
variety of reasons, including delays in:



| |  |  | obtaining regulatory approval to commence a trial;
| | - |  | --------------------------------------------------



| |  |  | reaching agreement with third-party clinical trial sites and their subsequent performance in conducting accurate and reliable trials on a timely basis;
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | obtaining IRB approval to conduct a trial at a prospective site;
| | - |  | ----------------------------------------------------------------



| |  |  | recruiting patients to participate in a trial; and
| | - |  | --------------------------------------------------



| |  |  | supply of the biological product.
| | - |  | ---------------------------------

Typically, if a biological product is intended to treat a chronic disease,
as is the case with NeoCart, safety and efficacy data must be gathered over an extended period of time, which can range from six months to three years or more. Success in early stage clinical trials does not ensure success in later stage clinical
trials. Data obtained from clinical activities is not always conclusive and may be susceptible to varying interpretations, which could delay, limit or prevent regulatory approval.

Concurrent with clinical trials, companies usually complete additional animal studies and must also develop additional information about the physical
characteristics of the biological product as well as finalize a process for manufacturing the product in commercial quantities in accordance with GMP requirements. To help reduce the risk of the introduction of adventitious agents with the use of
biological products, the Public Health Service Act emphasizes the importance of manufacturing control for products whose attributes cannot be precisely defined. The manufacturing process must be capable of consistently producing quality batches of
the product candidate and, among other things, the sponsor must develop methods for testing the identity, strength, quality, potency and purity of the final biological product. Additionally, appropriate packaging must be selected and tested and
stability studies must be conducted to demonstrate that the biological product candidate does not undergo unacceptable deterioration over its shelf life.



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U.S. Review and Approval Processes

In order to obtain approval to market a biological product in the United States, a BLA must be submitted to the FDA that provides data establishing to the
FDAs satisfaction the safety, purity and potency of the investigational biological product for the proposed indication. The application includes all data available from nonclinical studies and clinical trials, including negative or ambiguous
results as well as positive findings, together with detailed information relating to the products manufacture and composition, and proposed labeling, among other things. The testing and approval processes require substantial time and effort,
and there can be no assurance that the FDA will accept the BLA for filing and, even if filed, that any approval will be granted on a timely basis, if at all.

Under the Prescription Drug User Fee Act (PDUFA), each BLA must be accompanied by a user fee. The FDA adjusts the PDUFA user fees on an annual basis.
According to the FDAs fee schedule, effective beginning on October 1, 2013 and in effect through December 31, 2014, the user fee for an application requiring clinical data, such as a BLA, will be $2.2 million for 2014. PDUFA also
imposes an annual product fee for biologics ($104,060 for 2014), and an annual establishment fee ($554,600 for 2014) on facilities used to manufacture prescription biologics. Fee waivers or reductions are available in certain circumstances,
including a waiver of the application fee for the first application filed by a small business. Additionally, no user fees are assessed on BLAs for products designated as orphan drugs, unless the product also includes a non-orphan indication.

The FDA has 60 days from its receipt of a BLA to determine whether the application will be accepted for filing based on the FDAs threshold determination
that the application is sufficiently complete to permit substantive review. The FDA may refuse to file any BLA that it deems incomplete or not properly reviewable at the time of submission and may request additional information. In this event, the
BLA must be resubmitted with the additional information. The resubmitted application also is subject to review before the FDA accepts it for filing. After the BLA submission is accepted for filing, the FDA reviews the BLA to determine, among other
things, whether the proposed product is safe and potent, or effective, for its intended use, and has an acceptable purity profile, and whether the product is being manufactured in accordance with GMPs to assure and preserve the products
identity, safety, strength, quality, potency, and purity, and biological product standards. The FDA may refer applications for novel biological products or biological products that present difficult questions of safety or efficacy to an advisory
committee, typically a panel that includes clinicians and other experts, for review, evaluation and a recommendation as to whether the application should be approved and, if so, under what conditions. The FDA is not bound by the recommendations of
an advisory committee, but it considers such recommendations carefully when making decisions.

Before approving a BLA, the FDA will inspect the facilities
at which the product is manufactured. The FDA will not approve the product unless it determines that the manufacturing processes and facilities are in compliance with GMP requirements and adequate to assure consistent production of the product
within required specifications. For a human cellular or tissue product, the FDA also will not approve the product if the manufacturer is not in compliance with the GTP. These are FDA regulations that govern the methods used in, and the facilities
and controls used for, the manufacture of HCT/Ps, which are human cells or tissue intended for implantation, transplant, infusion, or transfer into a human recipient. The primary intent of the GTP requirements is to ensure that cell and tissue based
products are manufactured in a manner designed to prevent the introduction, transmission and spread of communicable disease. FDA regulations also require tissue establishments to register and list their HCT/Ps with the FDA and, when applicable, to
evaluate donors through screening and testing. Additionally, before approving a BLA, the FDA may inspect one or more clinical sites to assure that the clinical trials were conducted in compliance with IND application study requirements and GCP. To
assure GMP, GTP and GCP compliance, an applicant must incur significant expenditure of time, money and effort. If the FDA determines the manufacturing process or manufacturing facilities are not acceptable, it typically will outline the deficiencies
and often will require the facility to take corrective action and provide documentation evidencing the implementation of such corrective action. This may significantly delay further review of the application. If the FDA finds that a clinical site
did not conduct the clinical trial in accordance with GCP, the FDA may determine the data generated by the clinical site should be excluded from the primary



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efficacy analyses provided in the BLA and request additional testing or data. Additionally, notwithstanding the submission of any requested additional information, the FDA ultimately may decide
that the application does not satisfy the regulatory criteria for approval.

The FDA also has authority to require a Risk Evaluation and Mitigation
Strategy (REMS) from manufacturers to ensure that the benefits of a biological product outweigh its risks. A sponsor may also voluntarily propose a REMS as part of the BLA submission. The need for a REMS is determined as part of the review of the
BLA. Based on statutory standards, elements of a REMS may include dear doctor letters, a medication guide, more elaborate targeted educational programs, and in some cases restrictions on distribution. These elements are negotiated as
part of the BLA approval, and in some cases may delay the approval date. Once adopted, REMS are subject to periodic assessment and modification.

After
the FDA completes its initial review of a BLA, it will communicate to the sponsor that the biological product will either be approved, or it will issue a complete response letter to communicate that the BLA will not be approved in its current form.
The complete response letter usually describes all of the specific deficiencies in the BLA identified by the FDA. The deficiencies identified may be minor, for example, requiring labeling changes, or major, for example, requiring additional clinical
trials. Additionally, the complete response letter may include recommended actions that the applicant might take to place the applicant in a condition for approval. If a complete response letter is issued, the applicant may either resubmit the BLA,
addressing all of the deficiencies identified in the letter, or withdraw the application.

The FDA may not grant approval on a timely basis, or at all. We
may encounter difficulties or unanticipated costs in our efforts to secure necessary governmental approvals, which could delay or preclude us from marketing our products. The testing and approval process for a biological product usually takes
several years to complete.

One of the performance goals agreed to by the FDA under PDUFA is to review 90% of standard BLAs within ten months of the
60-day filing date and 90% of priority BLAs within six months of the 60-day filing date, whereupon a review decision is to be made. The FDA does not always meet its PDUFA goal dates for standard and priority BLAs and its review goals are subject to
change from time to time. The review process and the PDUFA goal data may be extended by three months if the FDA requests or the BLA applicant otherwise provides additional information or clarification regarding information already provided in the
submission within the last three months before the PDUFA goal date.

Even if a product candidate receives regulatory approval, the approval may be limited
to specific disease states, patient populations and dosages, or the indications for use may otherwise be limited, which could restrict the commercial value of the product. Further, the FDA may require that certain contraindications, warnings, or
precautions be included in the product labeling. The FDA may impose restrictions and conditions on product distribution, prescribing or dispensing in the form of a risk management plan, or otherwise limit the scope of any approval. In addition, the
FDA may require Phase 4 post-marketing clinical trials, designed to further assess a biological products safety and effectiveness, and testing and surveillance programs to monitor the safety of approved products that have been commercialized.
Further, even after regulatory approval is obtained, later discovery of previously unknown problems with a product may result in the imposition of new restrictions on the product or even complete withdrawal of the product from the market. Delay in
obtaining, or failure to obtain and maintain, regulatory approval for NeoCart, or obtaining approval but for significantly limited use, would harm our business.

FDA Post-Approval Requirements

Maintaining
substantial compliance with applicable federal, state, local and foreign statutes and regulations requires the expenditure of substantial time and financial resources. Rigorous and extensive FDA regulation of biological products continues after
approval, particularly with respect to GMP. We may rely, in the future, on third parties for the production of clinical and commercial quantities of any future products that we may



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commercialize. Manufacturers of our products are required to comply with applicable requirements in the GMP regulations, including quality control and quality assurance and maintenance of records
and documentation. We cannot be certain that we or our present or future suppliers will be able to comply with the GMP and other FDA regulatory requirements. Other post-approval requirements applicable to biological products include reporting of GMP
deviations that may affect the identity, potency, purity and overall safety of a distributed product, record-keeping requirements, reporting of adverse effects, reporting updated safety and efficacy information and complying with electronic record
and signature requirements. After a BLA is approved, the product also may be subject to official lot release. As part of the manufacturing process, the manufacturer is required to perform certain tests on each lot of the product before it is
released for distribution. If the product is subject to official release by the FDA, the manufacturer submits samples of each lot of product to the FDA together with a release protocol showing a summary of the history of manufacture of the lot and
the results of all of the manufacturers tests performed on the lot. The FDA also may perform certain confirmatory tests on lots of some products, such as viral vaccines, before releasing the lots for distribution by the manufacturer. In
addition, the FDA conducts laboratory research related to the regulatory standards on the safety, purity, potency and effectiveness of biological products.

Discovery of previously unknown problems or the failure to comply with the applicable regulatory requirements, by us or our suppliers, may result in
restrictions on the marketing of a product or withdrawal of the product from the market as well as possible civil or criminal sanctions and adverse publicity. FDA sanctions could include refusal to approve pending applications, suspension or
revocation of an approval, clinical hold, warning or untitled letters, product recalls, product seizures, total or partial suspension of production or distribution, injunctions, fines, refusals of government contracts, mandated corrective
advertising or communications with doctors, debarment, restitution, disgorgement of profits or civil or criminal penalties. Any agency or judicial enforcement action could have a material adverse effect on us.

Biological product manufacturers and other entities involved in the manufacture and distribution of approved biological products are required to register
their facilities with the FDA and certain state agencies, and are subject to periodic unannounced inspections by the FDA and certain state agencies for compliance with GMPs and other laws. In addition, changes to the manufacturing process or
facility generally require prior FDA approval before being implemented and other types of changes to the approved product, such as adding new indications and additional labeling claims, are also subject to further FDA review and approval.

Labeling, Marketing and Promotion

The FDA
closely regulates the labeling, marketing and promotion of biological products, including direct-to-consumer advertising, promotional activities involving the internet, and industry-sponsored scientific and educational activities. While doctors are
free to prescribe any product approved by the FDA for any use, a company can only make claims relating to safety and efficacy of a biological product that are consistent with FDA approval, and the company is allowed to market a biological product
only for the particular use and treatment approved by the FDA. In addition, any claims we make for our products in advertising or promotion must be appropriately balanced with important safety and risk information and otherwise be adequately
substantiated. Failure to comply with these requirements can result in adverse publicity, warning letters, corrective advertising, injunctions, seizures, potential civil and criminal penalties and exclusion from government healthcare programs.

Anti-Kickback and False Claims Laws

In the
United States, the research, manufacture, distribution, sale and promotion of biological products are potentially subject to regulation by various federal, state and local authorities in addition to the FDA, including the Centers for
Medicare & Medicaid Services, other divisions of the U.S. Department of Health and Human Services (for example, the Office of Inspector General), the U.S. Department of Justice, state Attorneys General, and other federal, state and local
government agencies. For example, sales, marketing and scientific/educational grant programs must comply with the Anti-Kickback Statute, the False Claims Act, the privacy regulations



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promulgated under the Health Insurance Portability and Accountability Act and similar state laws. Pricing and rebate programs must comply with the Medicaid Drug Rebate Program requirements of the
Omnibus Budget Reconciliation Act, and the Veterans Health Care Act. If products are made available to authorized users of the Federal Supply Schedule of the General Services Administration, additional laws and requirements apply. All of these
activities are also potentially subject to federal and state consumer protection and unfair competition laws.

As noted above, in the United States, we
are subject to complex laws and regulations pertaining to healthcare fraud and abuse, including the Anti-Kickback Statute, the False Claims Act and other state and federal laws and regulations. The Anti-Kickback Statute makes it illegal
for any person, including a biological product manufacturer (or a party acting on its behalf), to knowingly and willfully solicit, receive, offer, or pay any remuneration that is intended to induce the referral of business, including the purchase or
order of an item for which payment may be made under a federal healthcare program, such as Medicare or Medicaid. Violations of this law are punishable by up to five years in prison, criminal fines, administrative civil money penalties and exclusion
from participation in federal healthcare programs. In addition, many states have adopted laws similar to the Anti-Kickback Statute. Some of these state prohibitions apply to the referral of patients for healthcare services reimbursed by any insurer,
not just federal healthcare programs such as Medicare and Medicaid. Due to the breadth of these federal and state anti-kickback laws and the potential for additional legal or regulatory change in this area, it is possible that our future sales and
marketing practices or our future relationships with physicians might be challenged under anti-kickback laws, which could harm us. Because we intend to commercialize products that could be reimbursed under a federal healthcare program and other
governmental healthcare programs, we plan to develop a comprehensive compliance program that establishes internal controls to facilitate adherence to the rules and program requirements to which we will or may become subject.

The False Claims Act prohibits anyone from, among other things, knowingly presenting, or causing to be presented, for payment to federal programs (including
Medicare and Medicaid) claims for items or services, including biological products, that are false or fraudulent. Although we likely would not submit claims directly to payers, manufacturers can be held liable under these laws if they are deemed to
cause the submission of false or fraudulent claims by, for example, providing inaccurate billing or coding information to customers or promoting a product off-label. In addition, our future activities relating to the reporting of
wholesaler or estimated retail prices for our products, the reporting of prices used to calculate Medicaid rebate information and other information affecting federal, state and third-party coverage and reimbursement for our products and the sale and
marketing of our products, are subject to scrutiny under this law. For example, pharmaceutical companies have been prosecuted under the False Claims Act in connection with their off-label promotion of drugs. Penalties for a False Claims Act
violation include three times the actual damages sustained by the government, plus mandatory civil penalties of between $5,500 and $11,000 for each separate false claim, the potential for exclusion from participation in federal healthcare programs,
and, although the federal False Claims Act is a civil statute, conduct that results in a False Claims Act violation may also implicate various federal criminal statutes. If the government were to allege that we were, or convict us of, violating
these false claims laws, we could be subject to a substantial fine and may suffer a decline in our stock price. In addition, private individuals have the ability to bring actions under the False Claims Act and certain states have enacted laws
modeled after the False Claims Act.

There are also an increasing number of state laws that require manufacturers to make reports to states on
pricing and marketing information. Many of these laws contain ambiguities as to what is required to comply with the laws. In addition, beginning in August 2013, a similar federal requirement requires manufacturers to track and report to the
federal government certain payments made to physicians and teaching hospitals made in the previous calendar year. These laws may affect our sales, marketing, and other promotional activities by imposing administrative and compliance burdens on us.
In addition, given the lack of clarity with respect to these laws and their implementation, our reporting actions could be subject to the penalty provisions of the pertinent state, and soon federal, authorities.

Other Regulations

We are also subject to
numerous federal, state and local laws relating to such matters as safe working conditions, manufacturing practices, environmental protection, fire hazard control and disposal of hazardous or potentially



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hazardous substances. We may incur significant costs to comply with such laws and regulations now or in the future.

EU and EEA

Marketing authorization in the EU for
products containing viable human tissues or cells such as NeoCart is governed by Regulation 1394/2007/EC on advanced therapy medicinal products, read in combination with Directive 2001/83/EC of the European parliament and of the Council, commonly
known as the Community code on medicinal products. Regulation 1394/2007/EC establishes specific rules concerning the authorization, supervision and pharmacovigilance of gene therapy medicinal products, somatic cell therapy medicinal products and
tissue engineered products. Manufacturers of advanced therapy medicinal products must demonstrate the quality, safety and efficacy of their products to the EMA which is required to provide an opinion regarding the application for marketing
authorization. The European Commission grants or refuses marketing authorization in light of the opinion delivered by the EMA.

Applicants for marketing
authorizations for medicinal products in the EEA are required to submit applications for marketing authorization in a form that is based on the ICH Common Technical Document, and must demonstrate the safety, quality and efficacy of the medicinal
product for which the marketing authorization is sought. The application must include the results of pre-clinical tests and clinical trials conducted with the medicinal product.

The conduct of clinical trials in the EEA is governed by Directive 2001/20/EC which imposes obligations and procedures that are similar to those provided in
applicable U.S. laws. The EU Good Clinical Practice rules and EU Good Laboratory Practice obligations must also be respected during conduct of the trials. Clinical trials must be approved by the competent regulatory authorities and the competent
Ethics Committees in the EU Member States in which the clinical trials take place.

Moreover, applicants are required to provide evidence that studies
have been conducted with the medicinal product in the pediatric population as provided by a Pediatric Investigation Plan approved by the Pediatric Committee of the EMA. Alternatively, confirmation that the applicant has obtained a waiver or deferral
for the conduct of these studies must be provided. Cell-based products must also comply with Directive 2004/23/EC of the European Parliament and of the Council of March 31, 2004 on setting standards of quality and safety for the donation,
procurement, testing, processing, preservation, storage and distribution of human tissues and cells (Tissues and Cells Directive). This Directive describes the conditions and quality requirements which must be applied when sourcing the cells
intended for manufacturing of the cell-based medicinal product. The EU Member States have transposed the Tissues and Cells Directive into their national laws.

Locally different interpretations of the Tissue and Cells Directive have occurred during adoption of the national legal implementations by individual EU
Member States. This has led to some inconsistency of approach leading to additional complexity in complying with the all-over requirements in this already difficult regulatory field.

Given the specific nature of cell-based products, the clinical development paths are less standardized than for classic pharmaceutical or biological products.
Phase 1 studies are often not relevant, in particular for autologous cell-based products, since cells often need to be directly implanted into a tissue defect only present in patients. As cellular therapy Phase 3 studies are very complex to
organize, often limited numbers of patients can be enrolled and follow up times can be very long, so that the design and execution of these large confirmatory trials might not always be possible to the classical extent. Upfront discussions and
agreement with the regulatory authorities are an important criterion to success. It is also expected that new regulatory guidance will become available in the near future, more clearly describing the regulatory expectations.



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Employees

As of December 31, 2014, we employed 42 full-time employees, including two in research and development, nine in clinical development, two in regulatory,
24 in manufacturing and quality control and assurance, and five in executive, general and administrative. We also employed three part-time employees, including one in clinical development and two in executive, general and administrative. We have
never had a work stoppage, and none of our employees is represented by a labor organization or under any collective bargaining arrangements.

Corporate
Information

We were originally incorporated as a Massachusetts corporation in 2000. In 2006, we underwent a corporate reorganization pursuant to which
we were incorporated as a Delaware corporation. Our principal offices are located at 830 Winter Street, 3rd Floor, Waltham, Massachusetts 02451, and our telephone number is (781) 547-7900. Our website address is www.histogenics.com. Our
website and the information contained on, or that can be accessed through, our website shall not be deemed to be incorporated by reference in, and are not considered part of, this annual report. You should not rely on any such information in making
your decision whether to purchase our common stock.

Available Information

We file annual, quarterly, and current reports, proxy statements, and other documents with the Securities and Exchange Commission (SEC) under the Securities
Exchange Act of 1934, as amended (the Exchange Act). The public may read and copy any materials that we file with the SEC at the SECs Public Reference Room at 100 F Street, NE, Washington, DC 20549. The public may obtain information on the
operation of the Public Reference Room by calling the SEC at 1-800-SEC-0330. Also, the SEC maintains an Internet website that contains reports, proxy and information statements, and other information regarding issuers, including us, that file
electronically with the SEC. The public can obtain any documents that we file with the SEC at www.sec.gov.

Copies of each of our filings with the SEC on
Form 10-K, Form 10-Q and Form 8-K and all amendments to those reports, can be viewed and downloaded free of charge at our website, www.histogenics.com as soon as reasonably practicable after the reports and amendments are electronically filed with
or furnished to the SEC.

Our code of ethics, other corporate policies and procedures, and the charters of our Audit Committee, Compensation Committee and
Nominating/Corporate Governance Committee are available through our website at www.histogenics.com.



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|ITEM 1A. | RISK FACTORS
|-------- | ------------

Investing in our common stock involves risk. You should carefully
consider the risks described below as well as all the other information in this report, including the consolidated financial statements and the related notes appearing at the end of this annual report on Form 10-K, before making an investment
decision. The risks and uncertainties described below are not the only risks and uncertainties we face. Additional risks and uncertainties not presently known to us or that we currently deem immaterial also may impair our business operations. If any
of the following risks actually occur, our business, results of operations and financial condition could suffer. In that event the trading price of our common stock could decline, and you may lose all or part of your investment. The risks discussed
below also include forward-looking statements and our actual results may differ substantially from those discussed in these forward-looking statements.

Risks Related to Our Business and Commercialization of Our Product Candidates

We have a short operating history developing clinical-stage regenerative medicine products and there is a limited amount of information about us upon
which you can evaluate our product candidates and business prospects, making an investment in our common stock unsuitable for many investors.

We
are a clinical-stage regenerative medicine company, formed in 2000, with a limited operating history. Since inception we have devoted substantially all of our resources to the development of our regenerative medicine platform, the clinical and
preclinical advancement of our product candidates, the creation, licensing and protection of related intellectual property rights and the provision of general and administrative support for these operations. We have not yet obtained regulatory
approval for any product candidates in any jurisdiction or generated any significant revenues from product sales. If NeoCart or any of our future product candidates fails in clinical trials or preclinical development, or does not gain regulatory
approval, or if our product candidates following regulatory approval, if any, do not achieve market acceptance, we may never become profitable or sustain profitability.

We commenced our first clinical trial in 2005, and we have a limited operating history developing clinical-stage regenerative medicine products upon which you
can evaluate our business and prospects. In addition, besides our current ongoing Phase 3 clinical trial we have never conducted clinical trials of a size required for regulatory approvals. Further, we have not yet demonstrated an ability to
successfully overcome many of the risks and uncertainties frequently encountered by companies in new and rapidly evolving fields, such as regenerative medicine. For example, to execute our current business plan we will need to successfully:



| |  |  | execute our research and development strategies, including successfully enrolling and completing our clinical trial program for NeoCart;
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------



| |  |  | complete the transition of the NeoCart raw material manufacturing process to our in-house facilities and satisfy the U.S. Food and Drug Administration (FDA) as to the comparability of such raw materials to those
manufactured by third parties for use in our NeoCart clinical trials;
| | - |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | obtain required regulatory approvals for the commercialization of NeoCart;
| | - |  | --------------------------------------------------------------------------



| |  |  | expand potential indications of NeoCart and our regenerative medicine platform
| | - |  | ------------------------------------------------------------------------------



| |  |  | manage our spending as costs and expenses increase due to clinical trials, regulatory approvals, manufacturing and commercialization;
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------



| |  |  | continue to build and maintain a strong intellectual property portfolio;
| | - |  | ------------------------------------------------------------------------



| |  |  | recruit and retain qualified executive management personnel;
| | - |  | ------------------------------------------------------------



| |  |  | build and maintain appropriate research and development, clinical, sales, manufacturing, financial reporting, distribution and marketing capabilities on our own or through third parties;
| | - |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | secure additional funding as may be needed;
| | - |  | -------------------------------------------



| |  |  | gain broad market acceptance for our product candidates; and
| | - |  | ------------------------------------------------------------



| |  |  | develop and maintain successful strategic relationships.
| | - |  | --------------------------------------------------------



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If we are unsuccessful in accomplishing any of these objectives, we may not be able to develop product
candidates, raise capital, expand our business or continue our operations.

We have incurred significant losses since our inception and anticipate
that we will continue to incur substantial losses for the next several years.

We have incurred net losses in each year since our inception,
including net losses of $25.7 million in 2013 and $22.8 million in 2014. As of December 31, 2014, we had an accumulated deficit of $133.5 million. We expect to continue to incur substantial losses for the next several years, and we expect
these losses to increase as we continue our development of and seek regulatory approval for, NeoCart and our future product candidates. In addition, if we receive regulatory approval to market NeoCart or any of our future product candidates, we will
incur additional losses as we scale our manufacturing operations and build an internal sales and marketing organization to commercialize any approved products. In addition, we expect our expenditures to increase as we add infrastructure and
personnel to support our operations as a public company. We anticipate that our net losses and accumulated deficit for the next several years will be significant as we conduct our planned operations.

Because of the numerous risks and uncertainties associated with regenerative medicine product development, we are unable to accurately predict the timing or
amount of the development and clinical expenses or when, or if we will be able to achieve, or maintain, profitability. In addition, our expenses could increase if we are required by the FDA or comparable foreign regulatory authorities to perform
preclinical or clinical studies or trials in addition to those currently expected, or if there are any delays in completing the technology transfer and manufacturing location transition of our NeoCart raw material manufacturing process or completing
our clinical trials or the development of NeoCart or our future product candidates. The amount of our future net losses will depend, in part, on the amount and timing of our expenses, our ability to generate revenue and our ability to raise
additional capital. These net losses have had, and will continue to have, an adverse effect on our stockholders equity and working capital.

We may require substantial additional funding, which may not be available to us on acceptable terms, or at all, and, if not available, may require us to
delay, reduce or cease our product development activities and operations.

We are currently advancing our lead product candidate NeoCart through
clinical development. Developing regenerative medicine products, including conducting preclinical studies and clinical trials, is expensive. We may require substantial additional capital in order to complete the clinical development of, create
additional manufacturing capacity and to commercialize NeoCart and to conduct the research and development and clinical and regulatory activities necessary to bring other product candidates to market. If the FDA or comparable foreign regulatory
authorities require that we perform additional preclinical studies or clinical trials at any point or expand or extend our current trials, our expenses would further increase beyond what we currently expect, and the anticipated timing of any future
clinical development activities and potential regulatory approvals will likely be delayed. Raising funds in the then-current economic environment may be difficult and additional funding may not be available on acceptable terms, or at all.

The amount and timing of our future near-term funding requirements will depend on many factors, including:



| |  |  | the scope, progress, expansion, costs and results of our NeoCart clinical trials;
| | - |  | ---------------------------------------------------------------------------------



| |  |  | the timing of and costs associated with obtaining FDA approval of the comparability of the NeoCart raw materials manufactured in our facilities with the raw materials that were manufactured by third parties for the use
in our NeoCart clinical trials;
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | the timing of and costs involved in obtaining NeoCart regulatory approvals;
| | - |  | ---------------------------------------------------------------------------



| |  |  | market acceptance of NeoCart following the receipt of regulatory approval, if any;
| | - |  | ----------------------------------------------------------------------------------



| |  |  | the costs of maintaining, expanding and protecting our intellectual property portfolio, including potential litigation costs and liabilities associated therewith;
| | - |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------



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| |  |  | the resources we devote to marketing and, if approved, commercializing NeoCart;
| | - |  | -------------------------------------------------------------------------------



| |  |  | the scope, progress, expansion and costs of manufacturing NeoCart;
| | - |  | ------------------------------------------------------------------



| |  |  | our need to implement additional internal systems and infrastructure, including financial and reporting systems, as we become a public company; and
| | - |  | ---------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | the costs associated with being a public company.
| | - |  | -------------------------------------------------

Many of these factors are outside of our control. Based
upon our currently expected level of operating expenditures, we believe that we will be able to fund our operations and sustain currently projected cash needs through at least the middle of 2017. Our expectations are based on managements
current assumptions and clinical development plans, which may prove to be wrong, and we could spend our available financial resources much faster than we currently expect. This period could be shortened if there are any unanticipated increases in
spending on development programs. In addition, the net proceeds from our initial public offering will not be sufficient to complete the advanced clinical development of all of our product candidates that would be necessary to support an application
for regulatory approval. Accordingly, we will continue to require substantial additional capital beyond the expected proceeds of our initial public offering completed in December 2014. In order to fund our future needs, we may seek additional
funding through equity or debt financings, development partnering arrangements, lines of credit or other sources.

If we are required to secure additional
financing, the fundraising efforts may divert our management from our day-to-day activities, which may adversely affect our ability to develop and commercialize our product candidates. In addition, we cannot guarantee that future financing will be
available in sufficient amounts or on terms acceptable to us, if at all. If we are unable to raise additional capital when required or on acceptable terms, we may be required to significantly delay, reduce or discontinue the development or
commercialization of one or more of our product candidates or curtail our operations, which will have an adverse effect on our business, operating results and prospects.

Failure to obtain, or any delay in obtaining, FDA approval regarding the comparability of critical NeoCart raw materials following our technology
transfer and manufacturing location transition may have an adverse effect on our business, operating results and prospects.

We are in the process
of planning a technology transfer to transition the manufacturing of certain raw materials and components in the NeoCart supply chain from outsourced contract manufacturers to in-house manufacturing facilities. We currently have enough of, or access
to, these raw materials and components in order to supply our Phase 3 clinical trial through the end of the first quarter of 2016. If our Phase 3 clinical trial enrollment is not complete by the end of the first quarter of 2016, our technology
transfer will need to be completed by that time in order to manufacture the supply of raw materials and components to complete the Phase 3 clinical trial and commercialize NeoCart upon FDA approval, if any. This technology transfer extends to the
three components of the CT3 bioadhesivemethylated collagen, curing component and activated polyethylene glycolas well as our collagen source, preparation and collagen honeycomb scaffold, which are used in the production of NeoCart.
Although we do not anticipate changes to the raw materials, formulations or properties, nor do we anticipate changes to the NeoCart manufacturing process or finished product specifications as a result of the transfer, we are required to demonstrate
to the FDA that the raw materials manufactured in the new facility are comparable to the raw materials that were manufactured in the previous contract manufacturers facilities. Demonstrating comparability requires evidence that the product is
consistent with that produced for the clinical trial to assure that the technology transfer does not affect safety, identity, purity or efficacy during the expansion from pilot scale to full scale production.

In order to obtain FDA approval of the comparability of the raw materials, we intend to submit an amendment to our existing Investigational New Drug (IND)
application file for FDA pre-approval. Prior to submission of the amendment to the IND application, we met with the FDA in December 2014 to obtain input and general agreement with respect to our technology transfer and comparability plans. We
provided the FDA with a briefing package that included our technology transfer plan, comparability plans, product test methods and manufacturing process summaries.



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The FDA may determine that such analytical data is not sufficient to prove comparability of the raw materials
produced at our in-house manufacturing sites to the raw materials sourced from external vendors for earlier clinical trial work, including the Phase 3 clinical trial. If this is the case, the FDA may require that we provide additional preclinical or
clinical data to provide evidence to support the comparability of the raw materials. The size, scope, length and costs of any new or supplemental clinical trials that may be required by the FDA to provide such data are not known at this time.
Failure or delay in obtaining FDA approval of the comparability of our NeoCart raw materials or the FDA requiring us to provide clinical data may result in delays to our current projected timelines and could have an adverse effect on our business,
operating results and prospects.

Additionally, our manufacturing sites may not receive FDA approval to operate at all, resulting in delays while we
implement improvements necessary to receive approval which would lead to delays in the initiation of commercial production. In addition, we could encounter difficulties involving production yields, quality control and quality assurance, as well as
shortages of qualified personnel, leading to additional delays.

If we encounter difficulties enrolling patients in our clinical trials, our
clinical development activities could be delayed or otherwise adversely affected.

We will be required to identify and enroll a sufficient number
of patients that meet inclusion criteria under investigation for NeoCart. At the time of our voluntary pause of our NeoCart Phase 3 clinical trial upon discovery of discrepancies in the testing procedures used to assess one of the raw materials
utilized in the manufacture of NeoCart implants, we had enrolled 30 patients and we will need to enroll the remaining patients in a timely manner in order to complete the trial on schedule. There is a limited patient population from which to draw
participants in clinical trials. Due to the need to find patients with few or no concomitant joint disease, we may not be able to identify and enroll a sufficient number of patients, or those with required or desired characteristics and criteria, in
a timely manner. In addition, there are a limited number of specialized orthopedic surgeons that perform cartilage repair implantation procedures and among physicians who perform such procedures, some may not choose to perform these procedures under
conditions that fall within our protocols, which would have an adverse effect on our development of NeoCart. Our ability to enroll patients in our clinical trials is affected by a number of factors including:



| |  |  | the size and nature of the patient population;
| | - |  | ----------------------------------------------



| |  |  | the design of the trial protocol;
| | - |  | ---------------------------------



| |  |  | the eligibility and exclusion criteria for the trial in question;
| | - |  | -----------------------------------------------------------------



| |  |  | the availability of competing therapies and competing clinical trials, and physician and patient perception of NeoCart and our other product candidates being studied in relation to these other potential options;
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | the efforts to facilitate timely enrollment in clinical trials;
| | - |  | ---------------------------------------------------------------



| |  |  | the ability to identify, solicit and recruit a sufficient number of patients;
| | - |  | -----------------------------------------------------------------------------



| |  |  | the ability to obtain and maintain patient consent;
| | - |  | ---------------------------------------------------



| |  |  | the number and location of clinical sites we enroll;
| | - |  | ----------------------------------------------------



| |  |  | the proximity and availability of clinical trial sites for prospective patients;
| | - |  | --------------------------------------------------------------------------------



| |  |  | the availability of time and resources at the institutions where clinical trials are and will be conducted;
| | - |  | -----------------------------------------------------------------------------------------------------------



| |  |  | the availability of raw materials and the possibility of raw materials expiring prior to their use;
| | - |  | ---------------------------------------------------------------------------------------------------



| |  |  | the presence of concomitant joint disease in patients under investigation;
| | - |  | --------------------------------------------------------------------------



| |  |  | the study endpoints such as pain that rely on subjective patient reported outcomes;
| | - |  | -----------------------------------------------------------------------------------



| |  |  | the ability to monitor patients adequately during and after treatment; and
| | - |  | --------------------------------------------------------------------------



| |  |  | the risk that enrolled subjects will drop out before study completion.
| | - |  | ----------------------------------------------------------------------



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If we have difficulty enrolling a sufficient number of patients to conduct our clinical trials as planned,
we may need to delay or terminate ongoing or planned clinical trials, either of which would have an adverse effect on our business.

A number of
companies in the regenerative medicine industry have suffered significant setbacks or difficulty enrolling patients in later stage clinical trials even after achieving promising results in earlier stages of development. Success in preclinical
testing and early clinical trials does not ensure that later clinical trials will be successful, and initial results from a clinical trial do not necessarily predict final results. Even if early stage clinical trials are successful, we may need to
conduct additional clinical trials for product candidates in additional patient populations or under different treatment conditions before we are able to seek approvals from the FDA and regulatory authorities outside the United States to market and
sell these product candidates. Our failure to demonstrate the required characteristics to support marketing approval for NeoCart and our product candidates in our planned and future clinical trials would substantially harm our business and
prospects.

We are heavily dependent on the success of our lead product candidate NeoCart, which is still under development. If we are unable to
commercialize NeoCart, or experience significant delays due to manufacturing or otherwise in doing so, our business will be materially harmed.

We
have invested a significant portion of our time and financial resources in the development of NeoCart, our product candidate in clinical development. We anticipate that in the near term our ability to generate revenues will depend solely on the
successful development and commercialization of NeoCart. We may not complete our registration filings in our anticipated time frame. Even after we complete our BLA filing, the FDA may not accept our submission, may request additional information
from us, including data from additional clinical trials, and, ultimately, may not grant marketing approval for NeoCart. In addition, the clinical data we have to date often is susceptible to varying interpretations and many companies that have
believed that their products performed satisfactorily in clinical trials have nonetheless failed to obtain FDA approval for their products.

If we are not
successful in commercializing NeoCart, or are significantly delayed in doing so, our business will be materially harmed and we may need to curtail or cease operations. Our ability to successfully commercialize NeoCart will depend, among other
things, on our ability to:



| |  |  | successfully complete our clinical trials;
| | - |  | ------------------------------------------



| |  |  | produce, through a validated process, NeoCart in quantities sufficiently large to permit successful commercialization;
| | - |  | ----------------------------------------------------------------------------------------------------------------------



| |  |  | receive marketing approvals from the FDA and similar foreign regulatory authorities;
| | - |  | ------------------------------------------------------------------------------------



| |  |  | launch commercial sales of NeoCart; and
| | - |  | ---------------------------------------



| |  |  | secure acceptance of NeoCart in the medical community and with third-party payors.
| | - |  | ----------------------------------------------------------------------------------

NeoCart and our
future product candidates are subject to extensive regulation, compliance with which is costly and time consuming, may cause unanticipated delays or prevent the receipt of the approvals required to commercialize NeoCart and our future product
candidates.

The clinical development, manufacturing, labeling, storage, record-keeping, advertising, promotion, import, export, marketing and
distribution of NeoCart and our future product candidates are subject to extensive regulation by the FDA in the United States and by comparable authorities in foreign markets. In the United States, we are not permitted to market our product
candidates until we receive regulatory approval from the FDA. The process of obtaining regulatory approval is expensive, often takes many years, and can vary substantially based upon the type, complexity, and novelty of the products involved, as
well as the target indications. Approval policies or regulations may change and the FDA has substantial discretion in the tissue regeneration approval process, including the ability to delay, limit or deny approval of a product candidate for many
reasons. Despite the time and expense invested in clinical development of product candidates, regulatory approval is never guaranteed.



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The FDA or comparable foreign regulatory authorities can delay, limit or deny approval of a product candidate for
many reasons, including:



| |  |  | such authorities may disagree with the design or implementation of our or any of our future development partners clinical trials;
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------



| |  |  | we or any of our future development partners may be unable to demonstrate to the satisfaction of the FDA or other regulatory authorities that a product candidate is safe and effective for any indication;
| | - |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | such authorities may not accept clinical data from trials which are conducted at clinical facilities or in countries where the standard of care is potentially different from the United States;
| | - |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | the results of clinical trials may not demonstrate the safety or efficacy required by such authorities for approval;
| | - |  | --------------------------------------------------------------------------------------------------------------------



| |  |  | we or any of our future development partners may be unable to demonstrate that a product candidates clinical and other benefits outweigh its safety risks;
| | - |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | such authorities may disagree with our interpretation of data from preclinical studies or clinical trials or the use of results from studies that served as precursors to our current or future product candidates;
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | such authorities may find deficiencies in our manufacturing processes or facilities or those of third-party manufacturers with which we or any of our future development partners contract for clinical and commercial
supplies; or
| | - |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | the approval policies or regulations of such authorities may significantly change in a manner rendering our or any of our future development partners clinical data insufficient for approval.
| | - |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

With respect to foreign markets, approval procedures vary among countries and, in addition to the risks described above, can involve additional product
testing, administrative review periods, and agreements with pricing authorities. In addition, events raising questions about the safety of certain marketed pharmaceuticals or biologics may result in increased cautiousness by the FDA and comparable
foreign regulatory authorities in reviewing new tissue regeneration products based on safety, efficacy or other regulatory considerations and may result in significant delays in obtaining regulatory approvals. Any delay in obtaining, or inability to
obtain, applicable regulatory approvals would prevent us or any of our future development partners from commercializing our product candidates.

NeoCart or any future product candidate we or any of our future development partners advance into clinical trials may cause unacceptable adverse events
or have other properties that may delay or prevent its regulatory approval or limit its commercial potential.

Unacceptable adverse events caused
by any of our product candidates that we advance into clinical trials could cause us or regulatory authorities to interrupt, delay or halt clinical trials and could result in the denial of regulatory approval by the FDA or other regulatory
authorities for any or all targeted indications and markets. This in turn could prevent us from completing development or commercializing the affected product candidate and generating revenue from its sale.

We have not yet completed clinical testing of any of our product candidates for the treatment of the indications for which we intend to seek approval, and we
currently do not know the extent of adverse events, if any, that will be observed in individuals who receive any of our product candidates. If any of our product candidates cause unacceptable adverse events in clinical trials, we may not be able to
obtain regulatory approval or commercialize such product candidate.

The technologies on which our channel partnering agreement with Intrexon
Corporation is based are currently in preclinical and clinical stages of development.

We have an exclusive channel collaboration arrangement with
Intrexon Corporation (Intrexon) that provides for the worldwide exclusive use of Intrexons proprietary synthetic biology technology platform for the development and commercialization of allogeneic genetically modified chondrocyte cell
therapeutics for the treatment or



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repair of damaged articular hyaline cartilage in humans. Such technologies have a limited history of use in the design and development of human therapeutic product candidates and may therefore
involve unanticipated risks or delays. We cannot assure that any product candidates developed from this collaboration will result in nonclinical results sufficient to warrant the expense of clinical testing in human clinical trials.

The results of preclinical studies and early clinical trials are not always predictive of future results. Any product candidate we or any of our future
development partners advance into clinical trials may not have favorable results in later clinical trials, if any, or receive regulatory approval.

Regenerative medicine product development has inherent risk. We or any of our future development partners will be required to demonstrate through adequate and
well-controlled clinical trials that our product candidates are effective, with a favorable benefit-risk profile, for use in their target indications before we can seek regulatory approvals for their commercial sale. Regenerative medicine product
development is a long, expensive and uncertain process, and delay or failure can occur at any stage of development, including after commencement of any of our clinical trials. In addition, success in early clinical trials does not mean that later
clinical trials will be successful because product candidates in later-stage clinical trials may fail to demonstrate sufficient safety or efficacy despite having progressed through initial clinical testing. Furthermore, our future trials will need
to demonstrate sufficient safety and efficacy for approval by regulatory authorities in larger patient populations. Companies frequently suffer significant setbacks in advanced clinical trials, even after earlier clinical trials have shown promising
results. In addition, only a small percentage of biologics under development result in the submission of an NDA or a BLA to the FDA and even fewer are approved for commercialization.

We are subject to a multitude of manufacturing risks, any of which could substantially increase our costs and limit supply of our products.

The process of manufacturing NeoCart is complex, highly regulated and subject to several risks, including:



| |  |  | The process of manufacturing NeoCart, including the use of autologous cells, is susceptible to product loss due to contamination, equipment failure or improper installation or operation of equipment, or surgeon or
laboratory technician error. Even minor deviations from normal manufacturing processes could result in lost NeoCart production runs, product defects and other supply disruptions. If microbial, viral or other contaminations are discovered in our
products or in the manufacturing process or facilities in which our products are made, such manufacturing facilities may need to be closed for an extended period of time to investigate and remedy the contamination.
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | The manufacturing facilities in which NeoCart is made could be adversely affected by equipment failures, labor shortages, natural disasters, power failures and numerous other factors. For instance, in 2012, we
voluntarily suspended manufacturing operations and paused enrollment of the NeoCart Phase 3 clinical trial upon discovery of discrepancies in the testing procedures used to assess one of the raw materials utilized in the manufacture of NeoCart
implants and we could be required in the future to suspend manufacturing due to circumstances out of our control.
| | - |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | We and our contract manufacturers, if any, must comply with the current Good Manufacturing Practices (cGMP) regulations and guidelines promulgated by
the FDA. We and our contract manufacturers, if any, may encounter difficulties in achieving quality control and quality assurance and may experience shortages in qualified personnel. We and our contract manufacturers, if any, are subject to
inspections by the FDA and comparable agencies in other jurisdictions to confirm compliance with applicable regulatory requirements. Any failure to follow cGMP or other regulatory requirements or delay, interruption or other issues that arise in the
manufacture, packaging, storage or shipping of our products as a result of a failure of our facilities or operations, or the facilities or operations of third parties, to comply with regulatory requirements or pass any regulatory authority
inspection could significantly impair our ability to develop and commercialize our products, including leading to significant delays in the availability of products for our clinical studies or the termination or hold on a
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



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| | clinical study, or the delay or prevention of a filing or approval of marketing applications for our product candidates. Significant noncompliance could also result in the imposition of
sanctions, including fines, injunctions, civil penalties, failure of regulatory authorities to grant marketing approvals for our product candidates, delays, suspension or withdrawal of approvals, license revocation, seizures or recalls of products,
operating restrictions and criminal prosecutions, any of which could damage our reputation. If we are not able to maintain regulatory compliance, we may not be permitted to market our products or may be subject to product recalls, seizures,
injunctions, or criminal prosecution.
| | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Any adverse developments affecting manufacturing operations for our products may result in shipment delays, clinical enrollment delays, inventory shortages, lot failures, product withdrawals or recalls, or other
interruptions in the supply of our products. We may also have to take inventory write-offs and incur other charges and expenses for products that fail to meet specifications, undertake costly remediation efforts or seek more costly manufacturing
alternatives.
| | - |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

In order to manufacture NeoCart, we operate our own cGMP manufacturing facility in Waltham, Massachusetts for production of
NeoCart. We are in the process of developing a facility for our cGMP manufacturing in Lexington, Massachusetts which we plan to build out to produce key NeoCart raw materials, including CT3 components, collagen and scaffold. While we own the
manufacturing process, unforeseen issues or outside influences could impact potential supply. For example:



| |  |  | Our facility in Waltham may not meet FDA cGMP standards during the pre-approval inspection necessary for BLA approval, delaying BLA approval and resulting in added cost to mitigate issues identified during inspection.
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | The Lexington, Massachusetts site that we built out for production of key raw materials may not be completed on our current schedule and once completed may not receive FDA approval to operate, resulting in delays while
we implement improvements necessary to receive approval, leading to delays in the initiation of commercial production. We met with the FDA in December 2014 to obtain preliminary feedback and general acceptance of our raw material transition
strategy.
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | The raw material to be produced at the new facility site may not be comparable to the raw materials sourced from external vendors for earlier clinical trial work, including the ongoing NeoCart Phase 3 clinical
trial, according to our current projected timelines, and the FDA may delay approval of the new raw material source or require additional studies to show comparability. Such delays may impact enrollment of our NeoCart Phase 3 clinical trial and FDA
approval, if granted at all.
| | - |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | We may not achieve our anticipated production throughput targets, resulting in lower than anticipated capacity, limiting supply of our products, lowering revenue and increasing costs. We may not hit our production cost
target for a variety of reasons including increased raw material cost, underestimate of labor requirements, underestimate of capital requirement and other facility, personnel or materials issues that we have not anticipated. Increased costs will
adversely impact gross margin achieved by our products.
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | The FDA may not approve implementation of the multi-unit NeoCart reactor or approval may be delayed, which could result in capacity limitation or high unit costs, depending upon the length of the delay.
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

We may fail to comply with any of our obligations under existing agreements pursuant to which we license rights or technology, which
could result in the loss of rights or technology that are material to our business.

We are a party to technology licenses that are important to
our business and we may enter into additional licenses in the future. We currently hold material licenses from Purpose Co., Ltd., Angiotech Pharmaceuticals (US), Inc., Angiodevice International GmbH, the Board of Trustees of The Leland Stanford
Junior University, Yeda Research and Development Co., Ltd., Koken Co., Ltd., Intrexon and Advanced BioMatrix, Inc. The rights licensed under these agreements, including rights relating to our scaffolds, tissue processor, bioadhesives and



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growth factors, are material to our regenerative medicine platform and the continued development of NeoCart and our future product candidates. These licenses impose various commercial, contingent
payment, royalty, insurance, indemnification and other obligations on us. If we fail to comply with these obligations, the licensor may have the right to terminate the license, in which event we would lose valuable rights under our license
agreements and our ability to develop or commercialize product candidates. Any termination or reversion of our rights to under the foregoing agreements may have a material adverse effect on our business, prospects and results of operations. Our
exclusive channel collaboration agreement with Intrexon provides that Intrexon may terminate such agreement if we do not perform certain specified requirements, including developing therapies considered demonstrably superior to existing therapies
and those under development by us.

Development of regenerative medicine products is inherently expensive and risky and may not be understood by or
accepted in the marketplace, which could adversely affect our future value.

The clinical development, commercialization and marketing of
regenerative medicine products are at an early-stage, substantially research-oriented, and financially speculative. To date, very few companies have been successful in their efforts to develop and commercialize regenerative medicine products. In
general, regenerative medicine products may be susceptible to various risks, including undesirable and unintended side effects, unintended immune system responses, inadequate therapeutic efficacy, potentially prohibitive costs or other
characteristics that may prevent or limit their approval or commercial use. Furthermore, the number of people who may use cell- or tissue-based regenerative medicine therapies is difficult to forecast with accuracy. Our future success is dependent
on the establishment of a large global market for regenerative medicine products and our ability to capture a share of this market with NeoCart and our future product candidates.

Our development efforts with our regenerative medicine platform are susceptible to the same risks of failure inherent in the development and commercialization
of product candidates based on new technologies. The novel nature of regenerative medicine products creates significant challenges in the areas of product development and optimization, manufacturing, government regulation, third-party reimbursement
and market acceptance.

Even if we successfully develop and obtain regulatory approval for NeoCart and our future product candidates, the market may not
understand or accept them. NeoCart and our future product candidates represent novel treatments and are expected to compete with a number of surgical options and more conventional products and therapies manufactured and marketed by others, including
major pharmaceutical and biotechnology companies. The degree of market acceptance of any of our developed and potential product candidates will depend on a number of factors, including:



| |  |  | the clinical safety and effectiveness of NeoCart and our future product candidates and their perceived advantage over alternative treatment methods, if any;
| | - |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | adverse events involving NeoCart and our future product candidates or the products or product candidates of others; and
| | - |  | -----------------------------------------------------------------------------------------------------------------------



| |  |  | the cost of our products and the reimbursement policies of government and private third-party payors.
| | - |  | -----------------------------------------------------------------------------------------------------

If the
healthcare community does not accept NeoCart or our future product candidates for any of the foregoing reasons, or for any other reason, it could affect our sales, having an adverse effect on our business, financial condition and results of
operations.

We will need additional capital to develop and commercialize our product candidates including NeoCart, and we may be unable to raise
additional capital when needed at all, which could force us to reduce or discontinue such product candidates.

The amount and timing of our future,
long-term funding requirements will depend on many factors, including:



| |  |  | the type, number, costs and results of the product candidate development programs which we are pursuing or may choose to pursue in the future;
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | the scope, progress, expansion, costs and results of our preclinical and clinical trials;
| | - |  | -----------------------------------------------------------------------------------------



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| |  |  | the timing of and costs involved in obtaining regulatory approvals;
| | - |  | -------------------------------------------------------------------



| |  |  | market acceptance of any products for which we receive approval;
| | - |  | ----------------------------------------------------------------



| |  |  | our ability to establish and maintain development partnering arrangements;
| | - |  | --------------------------------------------------------------------------



| |  |  | the timing, receipt and amount of contingent, royalty and other payments from our future development partners, if any;
| | - |  | ----------------------------------------------------------------------------------------------------------------------



| |  |  | the emergence of competing technologies and other adverse market developments;
| | - |  | ------------------------------------------------------------------------------



| |  |  | the costs of maintaining, expanding and protecting our intellectual property portfolio, including potential litigation costs and liabilities;
| | - |  | ---------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | the resources we devote to marketing and, if approved, commercializing our product candidates;
| | - |  | ----------------------------------------------------------------------------------------------



| |  |  | the scope, progress, expansion and costs of manufacturing our product candidates; and
| | - |  | -------------------------------------------------------------------------------------



| |  |  | the costs of financing the purchases of additional capital equipment and development technologies.
| | - |  | --------------------------------------------------------------------------------------------------

If we are
unable to raise additional funding for our product candidates, including NeoCart, when needed, we may be required to delay, reduce or terminate some or all of our development programs and clinical trials. We may be required to sell or license to
others our technologies, product candidates or development programs that we would have preferred to develop and commercialize ourselves.

If our
competitors develop treatments for the target indications of NeoCart or our future product candidates that are approved more quickly, marketed more successfully or demonstrated to be safer or more effective than our product candidates, our
commercial opportunity will be reduced or eliminated.

The regenerative medicine industry is intensely competitive and subject to rapid and
significant technological change. We face competition from major multinational companies, established and early-stage biotechnology companies, and universities and other research institutions. Many of our competitors have greater financial and other
resources, such as larger research and development staff and more experienced marketing and manufacturing organizations. Large pharmaceutical companies, in particular, have extensive experience in clinical testing, obtaining regulatory approvals,
recruiting patients and manufacturing products. These companies also have significantly greater research, sales and marketing capabilities and collaborative arrangements in our target markets with leading companies and research institutions.
Established companies may also invest heavily to accelerate discovery and development of novel therapeutics or to in-license novel therapeutics that could make the product candidates that we develop obsolete. As a result of all of these factors, our
competitors may succeed in obtaining patent protection or FDA approval or discovering, developing and commercializing treatments in the regenerative medicine indications that we are targeting before we do. Smaller or early-stage companies may also
prove to be significant competitors, particularly through collaborative arrangements with large, established companies.

There are several clinical-stage
development programs in various stages of development that seek to regenerate soft tissue and repair cartilage. In addition, many universities and private and public research institutes may develop technologies that are relevant to our product
candidates, but license them to our competitors. Our competitors may succeed in developing, acquiring or licensing on an exclusive basis, technologies and products that are more effective, including a one-step alternative to NeoCart, or less costly
than NeoCart or any future product candidates that we may develop, which could render our products obsolete and noncompetitive.

We believe that our
ability to successfully compete will depend on, among other things:



| |  |  | the results of our and our collaborative partners preclinical studies and clinical trials;
| | - |  | -------------------------------------------------------------------------------------------



| |  |  | our ability to recruit and enroll patients for our clinical trials;
| | - |  | -------------------------------------------------------------------



| |  |  | the efficacy, safety and reliability of our product candidates;
| | - |  | ---------------------------------------------------------------



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| |  |  | the speed at which we develop our product candidates;
| | - |  | -----------------------------------------------------



| |  |  | our ability to design and successfully execute appropriate clinical trials;
| | - |  | ---------------------------------------------------------------------------



| |  |  | our ability to protect and develop intellectual property rights related to our products;
| | - |  | ----------------------------------------------------------------------------------------



| |  |  | our ability to maintain a good relationship with regulatory authorities;
| | - |  | ------------------------------------------------------------------------



| |  |  | the timing and scope of regulatory approvals, if any;
| | - |  | -----------------------------------------------------



| |  |  | our ability to commercialize and market any of our product candidates that receive regulatory approval;
| | - |  | -------------------------------------------------------------------------------------------------------



| |  |  | market perception and acceptance of regenerative medicine products;
| | - |  | -------------------------------------------------------------------



| |  |  | acceptance of our product candidates by physicians, patients and institutions;
| | - |  | ------------------------------------------------------------------------------



| |  |  | the price of our products;
| | - |  | --------------------------



| |  |  | adequate levels of reimbursement under private and governmental health insurance plans, including Medicare; and
| | - |  | ---------------------------------------------------------------------------------------------------------------



| |  |  | our ability to manufacture and sell commercial quantities of any approved products to the market.
| | - |  | -------------------------------------------------------------------------------------------------

If our
competitors market products that are more effective, safer or less expensive than our future products or that reach the market sooner than our future products, we may not achieve commercial success. Any inability to compete effectively will
adversely impact our business and financial prospects.

We have a limited manufacturing capacity for NeoCart and our future product candidates,
which could inhibit our revenues and the long-term growth prospects of our business.

We currently produce materials for clinical trials, including
production of NeoCart, at our existing manufacturing facilities in Waltham, Massachusetts, which we have designed and operated to be compliant with FDA, cGMP and the current Good Tissue Practice as and if applicable, requirements. While we believe
these facilities provide us with sufficient capacity to meet our expected clinical demand and possibly our commercial launch demand, it is possible that the demand for products could exceed our existing manufacturing capacity. It will become
necessary or desirable for us to expand our manufacturing capabilities for our regenerative medicine platform in the future, which may require us to invest significant amounts of capital and to obtain regulatory approvals. If we are unable to meet
rising demand for products on a timely basis or unable to maintain cGMP compliance standards, then it is likely that our clients and potential clients will elect to obtain the products from competitors, which could materially and adversely affect
the level of our revenues and our prospects for growth.

The current tissue engineering processor (TEP) in our Waltham facility is resource dependent due
to the single-unit capacity. We are developing a multi-unit NeoCart reactor design which we believe would alleviate the capacity restraints currently resulting from our single-unit processors and expect to increase capacity to 2,500 units per year
at the existing Waltham, Massachusetts facility. We currently expect to begin implementation of a multi-reactor unit during the first year of product commercialization, thus providing adequate capacity to meet expected demand through the first two
years of commercialization from our Waltham facility. The FDA may not, however, approve implementation of the multi-unit NeoCart reactor or approval may be delayed which could result in capacity limitation or high unit costs depending upon the
length of the delay. We are collaborating with a development corporation to design the multi-unit reactor.

Components of regenerative medicine products
approved for commercial sale or used in late-stage clinical trials must be manufactured in accordance with cGMP. In addition, the manufacturing process of regenerative medicine products may be required to be modified from time to time in response to
FDA requests. Manufacture of cell- or tissue-based regenerative medicine products is complex and subjects companies to significant regulatory burdens that may change over time. We may encounter difficulties in the production of our product
candidates due to our limited manufacturing experience.



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If we are not successful in discovering, developing, acquiring and commercializing additional product
candidates, our ability to expand our business will be limited.

A substantial amount of our effort is focused on the continued clinical testing
and potential approval of NeoCart and our future product candidates and expanding our product candidates to serve other indications of high unmet medical needs. Research programs to identify other indications require substantial technical, financial
and human resources, whether or not any product candidates for other indications are ultimately identified. Our research programs may initially show promise in identifying potential product candidates, yet fail to yield product candidates for
clinical development for many reasons, including the following:



| |  |  | the research methodology used may not be successful in identifying potential product candidates;
| | - |  | ------------------------------------------------------------------------------------------------



| |  |  | competitors may develop alternatives that render our product candidates obsolete or less attractive;
| | - |  | ----------------------------------------------------------------------------------------------------



| |  |  | product candidates we develop may nevertheless be covered by third parties patents or other exclusive rights;
| | - |  | --------------------------------------------------------------------------------------------------------------



| |  |  | a product candidate may on further study be shown to have harmful side effects or other characteristics that indicate it is unlikely to be effective or otherwise does not meet applicable regulatory criteria;
| | - |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | a product candidate may not be capable of being produced in commercial quantities at an acceptable cost, or at all; and
| | - |  | -----------------------------------------------------------------------------------------------------------------------



| |  |  | a product candidate may not be accepted as safe and effective by patients, the medical community or third-party payors, if applicable.
| | - |  | --------------------------------------------------------------------------------------------------------------------------------------

If we do not successfully develop and commercialize product candidates for other indications, our business and future prospects may be limited and our
business will be more vulnerable to problems that we encounter in developing and commercializing our current product candidates.

We will incur
additional expenses in connection with our exclusive channel collaboration arrangement with Intrexon.

Pursuant to our exclusive channel
collaboration agreement (the ECC) with Intrexon, we are responsible for future research and development expenses of product candidates developed under each such collaboration, the effect of which may increase the level of our overall research and
development expenses going forward. We expect to add an additional one to two personnel to support our exclusive channel collaborations with Intrexon.

Our collaboration with Intrexon is relatively new, and we have incurred $14,000 as of December 31, 2014 in connection with this collaboration. In
addition, because development activities are determined pursuant to a future joint steering committees comprised of representatives of Intrexon and us, future development costs associated this program may be difficult to anticipate and may exceed
our expectations. Our actual cash requirements may vary materially from our current expectations for a number of other factors that may include, but are not limited to, unanticipated technical challenges, changes in the focus and direction of our
development activities or adjustments necessitated by changes in the competitive landscape in which we operate. If we are unable to continue to financially support such collaborations due to our own working capital constraints, we may be forced to
delay our activities. If we are unable to obtain additional financing on terms acceptable to us or at all, we may be forced to seek licensing partners or discontinue development.

We may experience delays in commencing or conducting our clinical trials or in receiving data from third parties or in the completion of clinical
testing, which could result in increased costs to us and delay our ability to generate product candidate revenue.

Before we can initiate clinical
trials in the United States for our product candidates, we need to submit the results of preclinical testing to the FDA as part of an IND application, along with other information including information about product candidate chemistry,
manufacturing and controls and our proposed clinical trial protocol. We may rely in part on preclinical, clinical and quality data generated by contract research organization



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and other third parties for regulatory submissions for our product candidates. If these third parties do not make timely regulatory submissions for our product candidates, it will delay our plans
for our clinical trials. If those third parties do not make this data available to us, we will likely have to develop all necessary preclinical and clinical data on our own, which will lead to significant delays and increase development costs of the
product candidate. In addition, the FDA may require us to conduct additional preclinical testing for any product candidate before it allows us to initiate clinical testing under any IND application, which may lead to additional delays and increase
the costs of our preclinical development. Despite the presence of an active IND application for a product candidate, clinical trials can be delayed for a variety of reasons including delays in:



| |  |  | identifying, recruiting and training suitable clinical investigators;
| | - |  | ---------------------------------------------------------------------



| |  |  | reaching agreement on acceptable terms with prospective contract research organizations and trial sites, the terms of which can be subject to extensive negotiation, may be subject to modification from time to time, and
may vary significantly among different contract research organizations and trial sites;
| | - |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | obtaining sufficient quantities of a product candidate for use in clinical trials, including as a result of transferring the manufacturing of a product candidate to another site or manufacturer;
| | - |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | obtaining and maintaining institutional review board or ethics committee approval to conduct a clinical trial at an existing or prospective site;
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | identifying, recruiting and enrolling subjects to participate in a clinical trial; and
| | - |  | --------------------------------------------------------------------------------------



| |  |  | retaining or replacing participants who have initiated a clinical trial but may withdraw due to adverse events from the therapy, insufficient efficacy, fatigue with the clinical trial process, or personal issues.
| | - |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

The FDA may also put a clinical trial on clinical hold at any time during product candidate development. In addition, we may voluntarily
pause a clinical trial for a variety of reasons. For instance, in 2012 we voluntarily suspended manufacturing operations and paused enrollment of the NeoCart Phase 3 clinical trial upon discovery of discrepancies in the testing procedures used to
assess one of the raw materials utilized in the manufacture of NeoCart implants and we could be required in the future to suspend manufacturing due to circumstances out of our control.

Once a clinical trial has begun, it may also be delayed as a result of ambiguous or negative interim results. Further, a clinical trial may be suspended or
terminated by us, an institutional review board, an ethics committee or a data safety monitoring committee overseeing the clinical trial, any of our clinical trial sites with respect to that site or the FDA or other regulatory authorities due to a
number of factors, including:



| |  |  | failure to conduct the clinical trial in accordance with regulatory requirements or our clinical protocols;
| | - |  | -----------------------------------------------------------------------------------------------------------



| |  |  | inspection of the clinical trial operations or clinical trial site by the FDA or other regulatory authorities;
| | - |  | --------------------------------------------------------------------------------------------------------------



| |  |  | unforeseen safety issues, known safety issues that occur at a greater frequency or severity than we anticipate, or any determination that the clinical trial presents unacceptable health risks; or
| | - |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | lack of adequate funding to continue the clinical trial.
| | - |  | --------------------------------------------------------

Any delays in the commencement of our clinical
trials will delay our ability to pursue regulatory approval for our product candidates. Changes in U.S. and foreign regulatory requirements and guidance also may occur and we may need to amend clinical trial protocols to reflect these changes.
Amendments may require us to resubmit our clinical trial protocols to institutional review boards for re-examination, which may affect the costs, timing and likelihood of a successful completion of a clinical trial. If we or any of our future
development partners experience delays in the completion of, or if we or any of our future development partners must terminate, any clinical trial of any product candidate our ability to obtain regulatory approval for that product candidate will be
delayed and the commercial prospects, if any, for the product candidate may suffer as a result. In addition, many of these factors may also ultimately lead to the denial of regulatory approval of a product candidate.

Regulatory authorities, including the FDA and the European Medicines Agency, may disagree with our interpretations of data from pre-clinical studies and
clinical trials. Regulatory authorities also may approve a product for narrower indications than requested or may grant approval subject to the performance of post-



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marketing studies for a product. There can be no guarantee that such post-approval studies, if required, will corroborate the results of earlier trials. Furthermore, the market use of such
products may show different safety and efficacy profiles to those demonstrated in the trials on which marketing approval was based. Such circumstances could lead to the withdrawal or suspension of marketing approval for the product, which could have
a material adverse effect on our business, financial condition, operating results or cash flows. In addition, regulatory authorities may not approve or agree with the labeling claims that are necessary or desirable for the successful
commercialization of our products.

If NeoCart or any future product candidate that we successfully develop does not achieve broad market acceptance
among physicians, patients, healthcare payors and the medical community, the revenue that it generates may be limited.

Even if NeoCart or our
future product candidates receive regulatory approval, they may not gain market acceptance among physicians, patients, healthcare payors and the medical community. Coverage and reimbursement of our product candidates by third-party payors, including
government payors, generally is also necessary for commercial success. The degree of market acceptance of any approved product candidates will depend on a number of factors, including:



| |  |  | the efficacy and safety as demonstrated in clinical trials;
| | - |  | -----------------------------------------------------------



| |  |  | the clinical indications for which the product candidate is approved;
| | - |  | ---------------------------------------------------------------------



| |  |  | acceptance by physicians, major operators of hospitals and clinics and patients of the product candidate as a safe and effective treatment;
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | the potential and perceived advantages of product candidates over alternative treatments;
| | - |  | -----------------------------------------------------------------------------------------



| |  |  | the safety of product candidates seen in a broader patient group, including their use outside the approved indications;
| | - |  | -----------------------------------------------------------------------------------------------------------------------



| |  |  | the cost of treatment in relation to alternative treatments;
| | - |  | ------------------------------------------------------------



| |  |  | the availability of adequate reimbursement and pricing by third parties and government authorities;
| | - |  | ---------------------------------------------------------------------------------------------------



| |  |  | relative convenience and ease of administration;
| | - |  | ------------------------------------------------



| |  |  | the prevalence and severity of adverse events;
| | - |  | ----------------------------------------------



| |  |  | the effectiveness of our sales and marketing efforts; and
| | - |  | ---------------------------------------------------------



| |  |  | unfavorable publicity relating to the product candidate or regenerative medicine products, in general.
| | - |  | ------------------------------------------------------------------------------------------------------

If any
product candidate is approved but does not achieve an adequate level of acceptance by physicians, hospitals, healthcare payors and patients, we may not generate sufficient revenue from that product candidate and may not become or remain profitable.
Ethical, social and legal concerns about regenerative medicine products could result in additional regulations restricting or prohibiting the use of our product candidates.

Insurance coverage and reimbursement may be limited or unavailable in certain market segments for our product candidates, which could make it difficult
for us to sell our product candidates profitably.

Market acceptance and sales of NeoCart and our future product candidates will depend
significantly on the availability of adequate insurance coverage and reimbursement from third-party payors for any of our product candidates and may be affected by existing and future health care reform measures. Government authorities and
third-party payors, such as private health insurers and health maintenance organizations, decide which medical treatments they will pay for and establish reimbursement levels. Reimbursement by a third-party payor may depend upon a number of
factors including the third-party payors determination that use of a product candidate is:



| |  |  | a covered benefit under its health plan;
| | - |  | ----------------------------------------



| |  |  | safe, effective and medically necessary;
| | - |  | ----------------------------------------



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| |  |  | appropriate for the specific patient;
| | - |  | -------------------------------------



| |  |  | cost effective; and
| | - |  | -------------------



| |  |  | neither experimental nor investigational.
| | - |  | -----------------------------------------

Obtaining coverage and reimbursement approval for a product
candidate from a government or other third-party payor is a time-consuming and costly process that could require us to provide supporting scientific, clinical and cost effectiveness data for the use of our product candidates to the payor. We may not
be able to provide data sufficient to gain acceptance with respect to coverage and reimbursement. We cannot be sure that coverage or adequate reimbursement will be available for any of our product candidates. Also, we cannot be sure that
reimbursement amounts will not reduce the demand for, or the price of, NeoCart or our future product candidates. If reimbursement is not available or is available only to limited levels, we may not be able to commercialize certain of our product
candidates profitably, or at all, even if approved.

In the United States and certain foreign jurisdictions, there have been a number of legislative
and regulatory changes to health care systems that could affect our ability to sell our product candidates profitably. In particular, in 2003 the Medicare Modernization Act revised the payment methods for many product candidates under Medicare. This
has resulted in lower rates of reimbursement. There have been numerous other federal and state initiatives designed to reduce payment for products.

As a
result of legislative proposals and the trend toward managed health care in the United States, third-party payors are increasingly attempting to contain healthcare costs by limiting both coverage and the level of reimbursement of new tissue
regenerative medicine products. They may also refuse to provide coverage of approved product candidates for medical indications other than those for which the FDA has granted market approvals. As a result, significant uncertainty exists as to
whether and how much third-party payors will reimburse patients for their use of newly approved regenerative medicine products, which in turn will put pressure on the pricing of such products. We expect to experience pricing pressures in connection
with the sale of our product candidates due to the trend toward managed health care, the increasing influence of health maintenance organizations, and additional legislative proposals as well as country, regional, or local healthcare budget
limitations.

In addition, reimbursement agencies in foreign jurisdictions may be more conservative than those in the United States. Accordingly, in
markets outside the United States, the reimbursement for our products may be more limited than in the United States and may be insufficient to generate commercially reasonable revenues and profits.

Failure to obtain or maintain adequate reimbursement for any products for which we receive marketing approval will adversely impact our ability to achieve
commercial success.

We may face product liability claims and, if successful claims are brought against us, we may incur substantial liability and
costs. If the use of our product candidates harms patients, or is perceived to harm patients even when such harm is unrelated to our product candidates, our regulatory approvals could be revoked or otherwise negatively impacted and we could be
subject to costly and damaging product liability claims.

The use of NeoCart and our future product candidates in clinical trials and the sale of
any products for which we obtain marketing approval exposes us to the risk of product liability claims. Product liability claims might be brought against us by participants in clinical trials, consumers, healthcare providers, pharmaceutical
companies or others selling or otherwise coming into contact with our product candidates and any products for which we obtain marketing approval. There is a risk that our product candidates may induce adverse events, and that such adverse events may
not be detected for a long period of time. If we cannot successfully defend against product liability claims, we could incur substantial liability and costs. In addition, regardless of merit or eventual outcome, product liability claims may result
in:



| |  |  | impairment of our business reputation;
| | - |  | --------------------------------------



| |  |  | withdrawal of clinical trial participants;
| | - |  | ------------------------------------------



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| |  |  | termination of clinical trial sites or entire trial programs;
| | - |  | -------------------------------------------------------------



| |  |  | increased costs due to related litigation;
| | - |  | ------------------------------------------



| |  |  | distraction of managements attention from our primary business;
| | - |  | ----------------------------------------------------------------



| |  |  | substantial monetary awards to patients or other claimants;
| | - |  | -----------------------------------------------------------



| |  |  | the inability to commercialize our product candidates; and
| | - |  | ----------------------------------------------------------



| |  |  | decreased demand for our product candidates, if approved for commercial sale.
| | - |  | -----------------------------------------------------------------------------

We carry product liability
insurance that we believe is sufficient in light of our current clinical programs; however, we may not be able to maintain insurance coverage at a reasonable cost or in sufficient amounts to protect us against losses due to liability. If and when we
obtain marketing approval for product candidates, we intend to expand our insurance coverage to include the sale of commercial products; however, we may be unable to obtain product liability insurance on commercially reasonable terms or in adequate
amounts. On occasion, large judgments have been awarded in class action lawsuits based on regenerative medicine products or medical treatments that had unanticipated adverse effects. In addition, under some of our agreements with clinical trial
sites, we are required to indemnify the sites and their personnel against product liability and other claims. A successful product liability claim or series of claims brought against us or any third parties whom we are required to indemnify could
cause our stock price to decline and, if judgments exceed our insurance coverage, could adversely affect our results of operations and business.

During
the course of treatment, patients may suffer adverse events for reasons that may be related to our product candidates. Such events could subject us to costly litigation, require us to pay substantial amounts of money to injured patients, delay,
negatively impact or end our opportunity to receive or maintain regulatory approval to market our products, or require us to suspend or abandon our commercialization efforts. Even in a circumstance in which we do not believe that an adverse event is
related to our products, the investigation into the circumstance may be time-consuming or inconclusive. These investigations may interrupt our development and commercialization efforts, delay our regulatory approval process, or impact and limit the
type of regulatory approvals our product candidates receive or maintain. As a result of these factors, a product liability claim, even if successfully defended, could have a material adverse effect on our business, financial condition or results of
operations.

We do not carry insurance for all categories of risk that our business may encounter and we may not be able to maintain insurance with
adequate levels of coverage. Any significant uninsured liability may require us to pay substantial amounts, which would adversely affect our financial position and results of operations.

If we are unable to establish sales and marketing capabilities or fail to enter into agreements with third parties to market and sell any product
candidates we may successfully develop, we may not be able to effectively market and sell any such product candidates.

We have no experience
selling and marketing any products. We do not currently have any infrastructure for the sale, marketing and distribution of any of our product candidates once approved, if at all, and we must build this infrastructure in order to commercialize any
product candidates for which we may obtain approval in the United States or make arrangements with third parties to perform these functions for us outside of the United States. To successfully commercialize any products that may result from our
development programs, we will need to develop these capabilities, either on our own or with others. The establishment and development of a sales force, either by us or jointly with a development partner, or the establishment of a contract sales
force to market any product candidates we may develop will be expensive and time consuming and could delay any commercial launch. If we or any of our future development partners are unable to establish sales and marketing capabilities or any other
nontechnical capabilities necessary to commercialize any product candidates we may successfully develop, we will need to contract with third parties to market and sell such product candidates. We may not be able to establish arrangements with third
parties on acceptable terms, if at all.



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Legislative or regulatory healthcare reforms in the United States and abroad may make it more difficult and
costly for us to obtain regulatory approval of our product candidates and to produce, market and distribute our products after approval is obtained.

From time to time, legislation is drafted and introduced in Congress that could significantly change the statutory provisions governing the regulatory
approval, manufacture and marketing of regulated products or the reimbursement thereof. In addition, FDA regulations and guidance are often revised or reinterpreted by the FDA in ways that may significantly affect our business and our products. Any
new regulations or revisions or reinterpretations of existing regulations may impose additional costs or lengthen review times of NeoCart or any future product candidates. We cannot determine what effect changes in regulations, statutes, legal
interpretation or policies, when and if promulgated, enacted or adopted may have on our business in the future. Such changes could, among other things, require:



| |  |  | changes to manufacturing methods;
| | - |  | ---------------------------------



| |  |  | additional studies, including clinical studies;
| | - |  | -----------------------------------------------



| |  |  | recall, replacement, or discontinuance of one or more of our products;
| | - |  | ----------------------------------------------------------------------



| |  |  | the payment of additional taxes; or
| | - |  | -----------------------------------



| |  |  | additional record keeping.
| | - |  | --------------------------

Each of these requirements would likely entail substantial time and cost and could
adversely harm our business and our financial results. In addition, delays in receipt of or failure to receive regulatory approvals for any future products would harm our business, financial condition and results of operations. We intend to seek
approval to market our product candidates in both the United States and in foreign jurisdictions. If we obtain approval in one or more foreign jurisdictions, we will be subject to rules and regulations in those jurisdictions relating to such product
candidate. If reimbursement of our future products is unavailable or limited in scope or amount, or if pricing is set at unsatisfactory levels, we may be unable to achieve or sustain profitability.

We currently rely on third parties in order to perform certain aspects of our business, including to support certain aspects of our clinical trials and
to supply the NeoCart tissue engineering processor. If these third parties do not successfully carry out their contractual duties or meet expected deadlines, we may not be able to obtain regulatory approval for or commercialize our product
candidates and our business could be substantially harmed.

We have relied upon and plan to continue to rely upon third parties to monitor and
manage data for our ongoing clinical programs. We rely on these parties for execution of our clinical trials, and control only certain aspects of their activities. Nevertheless, we are responsible for ensuring that each of our studies is conducted
in accordance with the applicable protocol and legal, regulatory and scientific standards, and our reliance on third parties does not relieve us of our regulatory responsibilities. We also rely on third parties to assist in conducting our
nonclinical studies in accordance with good laboratory practices. We and our third-party service providers are required to comply with good clinical practices, which are regulations and guidelines enforced by the FDA, as well as comparable foreign
regulations and guidelines, for all of our product candidates in clinical development. Regulatory authorities enforce these good clinical practices through periodic inspections of trial sponsors, principal investigators and trial sites. If we or any
of our third-party service providers or clinical trial sites fail to comply with applicable good clinical practices, the clinical data generated in our clinical trials may be deemed unreliable and the FDA or comparable foreign regulatory authorities
may require us to perform additional clinical trials before approving our marketing applications. We cannot assure you that upon inspection by a given regulatory authority, such regulatory authority will determine that any of our clinical trials
comply with good clinical practices requirements. In addition, our clinical trials must be conducted with product produced under applicable good manufacturing practices requirements. Failure to comply with these regulations may require us to repeat
nonclinical and clinical trials, which would delay the regulatory approval process.



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Our third-party service providers are not our employees, and except for remedies available to us under our
agreements with such third parties, we cannot control whether or not they devote sufficient time and resources to our on-going clinical and nonclinical programs. If third-party service providers do not successfully carry out their contractual duties
or obligations or meet expected deadlines or if the quality or accuracy of the clinical data they obtain is compromised due to the failure to adhere to our clinical protocols, regulatory requirements or for other reasons, our clinical trials may be
extended, delayed or terminated and we may not be able to obtain regulatory approval for or successfully commercialize our product candidates. As a result, our results of operations and the commercial prospects for our product candidates would be
harmed, our costs could increase and our ability to generate revenues could be delayed.

Because we have relied on third parties, our internal capacity to
perform these functions is limited. Outsourcing these functions involves risk that third parties may not perform to our standards, may not produce results in a timely manner or may fail to perform at all. In addition, the use of third-party service
providers requires us to disclose our proprietary information to these parties, which could increase the risk that this information will be misappropriated. We currently have a small number of employees, which limits the internal resources we
have available to identify and monitor our third-party service providers. To the extent we are unable to identify and successfully manage the performance of third-party service providers in the future, our business may be adversely affected.
Although we carefully manage our relationships with our third-party service providers, there can be no assurance that we will not encounter similar challenges or delays in the future or that these delays or challenges will not have a material
adverse impact on our business, financial condition and prospects.

We are also dependent on third-party suppliers, most of which are sole source
suppliers of the components used to manufacture our TEP. If these third-party suppliers do not supply sufficient quantities to us on a timely basis and in accordance with applicable specifications and other regulatory requirements, there could be a
significant interruption of our ability to supply, which would adversely affect clinical development or commercial production of the product candidate. Furthermore, if any of these third parties cannot successfully supply TEPs that we require for
our production that conforms to our specifications and with regulatory requirements, we will not be able to meet demand, for our product candidates.

We
do not expect to have the resources or capacity to commercially manufacture TEPs required to manufacture our proposed product candidates if approved, and will likely continue to be dependent on third-party suppliers. Our dependence on third parties
to manufacture and supply us with these TEPs may adversely affect our ability to develop and commercialize our product candidates on a timely basis.

We may not be successful in establishing and maintaining development or other strategic partnerships, which could adversely affect our ability to
develop and commercialize product candidates.

As part of our strategy, we intend to enter into development or other strategic partnerships in the
future, including collaborations with major biotechnology or pharmaceutical companies. We face significant competition in seeking appropriate partners and the negotiation process is time consuming and complex. Moreover, we may not be successful in
our efforts to establish a development partnership or other alternative arrangements for any of our other existing or future product candidates and programs because our research and development pipeline may be insufficient, our product candidates
and programs may be deemed to be at too early a stage of development for collaborative effort or third parties may not view our product candidates and programs as having the requisite potential to demonstrate safety and efficacy. Even if we are
successful in our efforts to establish development partnerships, the terms that we agree upon may not be favorable to us and we may not be able to maintain such development partnerships if, for example, development or approval of a product candidate
is delayed or sales of an approved product candidate are disappointing. Any delay in entering into development partnership agreements related to our product candidates could delay the development and commercialization of our product candidates and
reduce their competitiveness if they reach the market.



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Moreover, if we fail to establish and maintain development or other strategic partnerships related to our product
candidates:



| |  |  | the development of certain of our current or future product candidates may be terminated or delayed;
| | - |  | ----------------------------------------------------------------------------------------------------



| |  |  | our cash expenditures related to development of certain of our current or future product candidates would increase significantly and we may need to seek additional financing;
| | - |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | we may be required to hire additional employees or otherwise develop expertise, such as sales and marketing expertise, for which we have not budgeted; and
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | we will bear all of the risk related to the development of any such product candidates.
| | - |  | ---------------------------------------------------------------------------------------

We may need to
expand our operations and increase the size of our company and we may experience difficulties in managing any such growth.

As we continue to
advance NeoCart towards potential commercialization, increase the number of ongoing product development programs and advance our future product candidates through preclinical studies and clinical trials, we will need to expand our development,
regulatory, manufacturing, marketing and sales capabilities and, in some cases, collaborate and contract with third parties to provide these capabilities for us. Our management, personnel and systems currently in place may not be adequate to support
this future growth. Our need to effectively manage our operations, growth and various projects requires that we:



| |  |  | successfully attract and recruit new employees or consultants with the requisite expertise and experience;
| | - |  | ----------------------------------------------------------------------------------------------------------



| |  |  | manage our preclinical and clinical programs effectively;
| | - |  | ---------------------------------------------------------



| |  |  | develop a marketing and sales infrastructure if we receive regulatory approval for any product candidate;
| | - |  | ---------------------------------------------------------------------------------------------------------



| |  |  | continue to improve our operational, financial and management controls, reporting systems and procedures, including those related to being a public company; and
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | construct, validate and effectively operate new and expanded manufacturing facilities.
| | - |  | --------------------------------------------------------------------------------------

If we are unable to
successfully manage this growth and increased complexity of operations, our business may be adversely affected.

If we fail to hire and effectively
integrate new executive officers into our organization, the future development and commercialization of our product candidates may suffer, harming future regulatory approvals, sales of our product candidates or our results of operations.

Our current management team has only been working together for a relatively short period of time and a number of members of our current management
team have been employed by us for less than a year. Adam Gridley joined us as our president and chief executive officer in May 2014 and we expect to continue to expand our management team in the future. In addition, Kevin McArdle resigned as our
chief financial officer effective March 31, 2015 and we terminated the employment of Nancy Lynch, M.D., our chief medical officer, effective January 30, 2015. We have commenced a comprehensive search for a new chief financial officer with
a leading executive search firm. We have appointed Stephen J. DiPalma our interim chief financial officer effective as of March 31, 2015, with primary responsibility for operational finance functions while we complete our search for a full-time
chief financial officer. Our future performance will depend significantly on our ability to successfully integrate our new chief executive officer and other recently and subsequently hired executive officers into our management team, and on those
officers ability to develop and maintain an effective working relationship. Our failure to integrate recently and subsequently hired executive officers, including our new chief executive officer, with other members of management could result
in inefficiencies in the development and commercialization of our product candidates, harming future regulatory approvals, sales of our product candidates and our results of operations.



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We may not be able to manage our business effectively if we are unable to attract and retain key personnel
and consultants.

Given the specialized nature of regenerative cell therapy and that it is a relatively new field, there is an inherent scarcity of
experienced personnel in the field. We may not be able to attract or retain qualified management (including a new chief executive officer), finance, scientific and clinical personnel and consultants due to the intense competition for qualified
personnel and consultants among biotechnology, pharmaceutical and other businesses. If we are not able to attract and retain necessary personnel and consultants to accomplish our business objectives, we may experience constraints that will
significantly impede the achievement of our development objectives, our ability to raise additional capital and our ability to implement our business strategy.

Our industry has experienced high turnover of management personnel in recent years. We are highly dependent on the development, regulatory, commercialization
and business development expertise of our senior management team. The loss of Mr. Gridley or one or more additional executive officers or key employees, could seriously harm our ability to implement our business strategy successfully. While we
have entered into employment contracts with each of our executive officers, including our new chief executive officer, any of them could leave our employment at any time, as all of our employees are at-will employees. Replacing key personnel and
consultants may be difficult and may take an extended period of time because of the limited number of individuals in our industry with the breadth of skills and experience required to develop, gain regulatory approval of and commercialize
products successfully. Competition to hire and retain employees and consultants from this limited pool is intense, and we may be unable to hire, train, retain or motivate these additional key personnel and consultants. Our failure to retain key
personnel or consultants could materially harm our business, and the transition to any replacement personnel, particularly at the chief executive officer position, may cause or result in:



| |  |  | speculation and uncertainty about our business and future direction;
| | - |  | --------------------------------------------------------------------



| |  |  | distraction of our employees and management;
| | - |  | --------------------------------------------



| |  |  | difficulty in recruiting, hiring, motivating and retaining talented and skilled personnel;
| | - |  | ------------------------------------------------------------------------------------------



| |  |  | volatility in our stock price; and
| | - |  | ----------------------------------



| |  |  | difficulty in negotiating, maintaining or consummating business or strategic relationships or transactions.
| | - |  | -----------------------------------------------------------------------------------------------------------

We rely on our scientific and clinical advisors and consultants to assist us in formulating our research, development and clinical strategies. These advisors
and consultants are not our employees and may have commitments to, or consulting or advisory contracts with, other entities that may limit their availability to us. In addition, these advisors and consultants typically will not enter into
non-compete agreements with us. If a conflict of interest arises between their work for us and their work for another entity, we may lose their services. Furthermore, our advisors may have arrangements with other companies to assist them in
developing products or technologies that may compete with ours. If we are unable to maintain consulting relationships with our key advisors or consultants or if they provide services to our competitors, our development and commercialization efforts
will be impaired, and our business will be significantly harmed.

Failure to build our finance infrastructure and improve our accounting systems and
controls could impair our ability to comply with the financial reporting and internal control requirements for publicly traded companies.

As a
public company, we will operate in an increasingly demanding regulatory environment, which requires us to comply with the Sarbanes-Oxley Act and the related rules and regulations of the SEC, expanded disclosure requirements, accelerated reporting
requirements and more complex accounting rules. Company responsibilities required by the Sarbanes-Oxley Act include establishing corporate oversight and adequate internal control over financial reporting and disclosure controls and procedures.
Effective internal controls are necessary for us to produce reliable financial reports and are important to help prevent financial fraud.



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Pursuant to Section 404 of the Sarbanes-Oxley Act and related rules, our management will be required to
report upon the effectiveness of our internal control over financial reporting. When and if we are a large accelerated filer or an accelerated filer and are no longer an emerging growth company, each as defined in
the Securities Exchange Act, our independent registered public accounting firm will be required to attest to the effectiveness of our internal control over financial reporting. However, for so long as we remain an emerging growth company, we intend
to take advantage of certain exemptions from various reporting requirements that are applicable to public companies that are not emerging growth companies, including not being required to comply with the auditor attestation requirements of
Section 404 for a period of no more than five years. Once we are no longer an emerging growth company or, if prior to such date, we opt to no longer take advantage of the applicable exemption, we will be required to include an opinion from
our independent registered public accounting firm on the effectiveness of our internal control over financial reporting. The rules governing the standards that must be met for management to assess our internal control over financial reporting are
complex and require significant documentation, testing, and possible remediation. To comply with the requirements of being a reporting company under the Securities Exchange Act, we need to: upgrade our systems, including information technology;
implement additional financial and management controls, reporting systems and procedures; and hire additional accounting and finance staff.

We have
previously identified material weaknesses in our internal control over financial reporting and may identify additional material weaknesses in the future that may cause us to fail to meet our reporting obligations or result in material misstatements
of our financial statements.

Our management team is responsible for establishing and maintaining adequate internal control over financial
reporting. Internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements in accordance with U.S. generally accepted
accounting principles. A material weakness is a deficiency, or a combination of deficiencies, in internal control over financial reporting such that there is a reasonable possibility that a material misstatement of annual or interim financial
statements will not be prevented or detected on a timely basis.

During the course of preparing for our initial public offering in 2013, our management
team determined that we had material weaknesses in our internal control over financial reporting. The material weaknesses were as follows:



| |  |  | Adequate controls were not in place to appropriately segregate duties in areas such as journal entries, cash disbursements, impairment of intangible assets and the calculation and recording of income taxes.
| | - |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Our controls and procedures over the accounting for and reporting of complex accounting matters were not effectively designed due to a failure to design and implement appropriate policies and procedures to ensure that
the accounting and valuation of complex debt and equity transactions is in accordance with GAAP.
| | - |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Our controls were not effectively implemented in the financial statement close process to ensure that proper cut-off of accrued expenses was achieved at interim periods.
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------

We have remediated the material weaknesses noted above in the second and third bullet points which related to the nine month period ended September 30,
2013, and we have remediated the material weakness identified in the first bullet point above relating to segregation of duties which related to the period ended December 31, 2013. However, we cannot assure you that our remediated measures will
be sufficient or that we will not have other material weaknesses or significant deficiencies in our internal control over financial reporting. If we identify any material weaknesses or significant deficiencies that may exist, the accuracy and timing
of our financial reporting may be adversely affected, we may be unable to maintain compliance with securities law requirements regarding timely filing of periodic reports in addition to applicable stock exchange listing requirements, and our stock
price may decline materially as a result.

Historically, we have not had sufficient accounting and supervisory personnel with the appropriate level of
technical accounting experience and training necessary, or adequate formally documented accounting policies and procedures, to support effective internal control and appropriate segregation of duties. We have commenced



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the process of formally documenting, reviewing and improving our internal control over financial reporting. We have made efforts to improve our internal control and accounting policies and
procedures. These efforts include hiring new accounting personnel and engaging external temporary resources to supplement our accounting function until full time accounting personnel can be hired.

Pursuant to Section 404(a) of the Sarbanes-Oxley Act, we will be required to furnish a report by our management on our internal control over financial
reporting. We have begun the process of documenting and evaluating our system of internal control over financial reporting necessary for our management to issue this report. However, we anticipate that we will need to retain additional finance
capabilities and build our financial infrastructure as we transition to operating as a public company, including complying with the requirements of Section 404 of the Sarbanes-Oxley Act. We continue improve our financial infrastructure with the
retention of additional financial and accounting capabilities, the enhancement of internal control and additional training for our financial and accounting staff.

Until we are able to expand our finance and administrative capabilities and establish necessary financial reporting infrastructure, we may not be able to
prepare and disclose, in a timely manner, our financial statements and other required disclosures or comply with the Sarbanes-Oxley Act or existing or new reporting requirements. If we cannot provide reliable financial reports or prevent fraud, our
business and results of operations could be harmed and investors could lose confidence in our reported financial information.

If we engage in an
acquisition, reorganization or business combination, we will incur a variety of risks that could adversely affect our business operations or our stockholders.

From time to time we have considered, and we will continue to consider in the future, strategic business initiatives intended to further the expansion and
development of our business. These initiatives may include acquiring businesses, technologies or products or entering into a business combination with another company. For instance, in 2011, we acquired ProChon Biotech Ltd. Although we intend to
evaluate and consider acquisitions, reorganizations and business combinations in the future, we have no agreements or understandings with respect to any acquisition, reorganization or business combination at this time. Any acquisitions we undertake,
including our prior acquisition of ProChon Biotech Ltd., will likely be accompanied by business risks which may include:



| |  |  | the effect of the acquisition on our financial and strategic position and reputation;
| | - |  | -------------------------------------------------------------------------------------



| |  |  | the need to reprioritize our development programs and even cease development and commercialization of our product candidates;
| | - |  | -----------------------------------------------------------------------------------------------------------------------------



| |  |  | the failure of an acquisition to result in expected benefits, which may include benefits relating to enhanced revenues, technology, human resources, costs savings, operating efficiencies, goodwill and other synergies;
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | the difficulty, cost and management effort required to integrate the acquired businesses, including costs and delays in implementing common systems and procedures and costs and delays caused by communication
difficulties;
| | - |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | the assumption of certain known or unknown liabilities of the acquired business, including litigation-related liabilities;
| | - |  | --------------------------------------------------------------------------------------------------------------------------



| |  |  | the reduction of our cash available for operations and other uses, the increase in amortization expense related to identifiable assets acquired, potentially dilutive issuances of equity securities or the incurrence of
debt;
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | a lack of experience in new markets, new business culture, products or technologies or an initial dependence on unfamiliar distribution partners;
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | the possibility that we will pay more than the value we derive from the acquisition;
| | - |  | ------------------------------------------------------------------------------------



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| |  |  | the impairment of relationships with customers, partners or suppliers of the acquired business; and
| | - |  | ---------------------------------------------------------------------------------------------------



| |  |  | the potential loss of key employees of the acquired company.
| | - |  | ------------------------------------------------------------

These factors could harm our business, results
of operations or financial condition.

In addition to the risks commonly encountered in the acquisition of a business or assets as described above, we may
also experience risks relating to the challenges and costs of evaluating or closing a transaction, including distraction of our management team from normal business operations. The risks described above may be exacerbated as a result of managing
multiple acquisitions at once.

Our ability to utilize our net operating loss carryforwards and certain other tax attributes may be limited.

We have incurred substantial losses during our history and do not expect to become profitable in the foreseeable future and may never achieve
profitability. To the extent that we continue to generate taxable losses, unused losses will carry forward to offset future taxable income, if any, until such unused losses expire. We may be unable to use these losses to offset income before such
unused losses expire. Under Section 382 of the Internal Revenue Code, Under Section 382 and 383 of the Internal Revenue Code (Code), utilization of net operating losses and research and development credit carryforwards may be subject to a
substantial annual limitation due to ownership change limitations that have occurred or that could occur in the future. In general an ownership change as defined by section 382 of the Code results from a transaction or series of
transactions over a three year period resulting in an ownership change of more than 50 percentage points of the outstanding stock of a company by certain stockholders. We have in the past experienced ownership changes that have resulted in
limitations on the use of a portion of our net operating loss carryforwards. If we experience further ownership changes, our ability to utilize our net operating loss carryforwards could be further limited.

Our internal computer systems, or those of our development partners, third-party clinical research organizations or other contractors or consultants,
may fail or suffer security breaches, which could result in a material disruption of our product development programs.

Despite the implementation
of security measures, our internal computer systems and those of our development partners, third-party clinical research organizations and other contractors and consultants are vulnerable to damage from computer viruses, unauthorized access, natural
disasters, terrorism, war and telecommunication and electrical failures. While we have not experienced any such system failure, accident or security breach to date, if such an event were to occur and cause interruptions in our operations, it could
result in a material disruption of our programs. For example, the loss of clinical trial data for any of our product candidates could result in delays in our regulatory approval efforts and significantly increase our costs to recover or reproduce
the data. To the extent that any disruption or security breach results in a loss of or damage to our data or applications or other data or applications relating to our technology or product candidates, or inappropriate disclosure of confidential or
proprietary information, we could incur liabilities and the further development of our product candidates could be delayed.

We use hazardous
chemicals and biological materials in our business. Any claims relating to improper handling, storage or disposal of these materials could be time consuming and costly. We may incur significant costs complying with environmental laws and
regulations.

Our research and development and manufacturing processes involve the controlled use of hazardous materials, including chemicals and
biological materials. Our operations produce hazardous waste products. We cannot eliminate the risk of accidental contamination or discharge and any resultant injury from these materials. We may be sued for any injury or contamination that results
from our use or the use by third parties of these materials, and our liability may exceed our insurance coverage and our total assets. Federal, state and local laws and regulations govern the use, manufacture, storage, handling and disposal of these
hazardous materials and specified waste products, as well as the discharge of pollutants into the environment and human health and safety matters.



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Compliance with environmental laws and regulations may be expensive and may impair our research, development and production efforts. If we fail to comply with these requirements, we could incur
substantial costs, including civil or criminal fines and penalties, clean-up costs or capital expenditures for control equipment or operational changes necessary to achieve and maintain compliance. In addition, we cannot predict the impact on our
business of new or amended environmental laws or regulations or any changes in the way existing and future laws and regulations are interpreted and enforced.

Our employees may engage in misconduct or other improper activities, including noncompliance with regulatory standards and requirements and insider
trading.

We are exposed to the risk of employee fraud or other misconduct. Misconduct by employees could include intentional failures to comply
with the regulations of the FDA or foreign regulators, failure to provide accurate information to regulatory authorities, failure to comply with manufacturing standards we have established, failure to comply with federal and state health care fraud
and abuse laws and regulations in the United States and abroad, failure to report financial information or data accurately or disclose unauthorized activities to us. In particular, sales, marketing and business arrangements in the healthcare
industry are subject to extensive laws and regulations intended to prevent fraud, misconduct, kickbacks, self-dealing and other abusive practices. These laws and regulations may restrict or prohibit a wide range of pricing, discounting, marketing
and promotion, sales commission, customer incentive programs and other business arrangements. Employee misconduct could also involve the improper use of information obtained in the course of clinical trials, which could result in regulatory
sanctions and cause harm to our reputation. We have adopted a code of business conduct and ethics, but it is not always possible to identify and deter employee misconduct, and the precautions we take to detect and prevent this activity may not be
effective in controlling unknown or unmanaged risks or losses or in protecting us from governmental investigations or other actions or lawsuits stemming from a failure to comply with these laws or regulations. If any such actions are instituted
against us, and we are not successful in defending ourselves or asserting our rights, those actions could have a significant impact on our business, including the imposition of significant fines or other sanctions.

In addition, during the course of our operations our directors, executives and employees may have access to material, nonpublic information regarding our
business, our results of operations or potential transactions we are considering. We may not be able to prevent a director, executive or employee from trading in our common stock on the basis of, or while having access to, material, nonpublic
information. If a director, executive or employee was to be investigated or an action was to be brought against a director, executive or employee for insider trading, it could have a negative impact on our reputation and our stock price. Such a
claim, with or without merit, could also result in substantial expenditures of time and money and divert attention of our management team from other tasks important to the success of our business.

Costs associated with being a public reporting company are significant, and public reporting requirements divert significant company resources and
management attention.

We are subject to the reporting requirements of the Securities Exchange Act and the other rules and regulations of the SEC.
We are working with our legal, independent accounting and financial advisors to identify those areas in which changes should be made to our financial and management control systems to manage our growth and our obligations as a public reporting
company. These areas include corporate governance, corporate control, disclosure controls and procedures, and financial reporting and accounting systems. We have made, and will continue to make, changes in these and other areas. Compliance with the
various reporting and other requirements applicable to public reporting companies will require considerable time, attention of management and financial resources. In addition, the changes we make may not be sufficient to allow us to satisfy our
obligations as a public reporting company on a timely basis.

Further, the listing requirements of NASDAQ require that we satisfy certain corporate
governance requirements relating to director independence, distributing annual and interim reports, stockholder meetings, approvals and voting, soliciting proxies, conflicts of interest and a code of conduct. Our management and other personnel will



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need to devote a substantial amount of time to ensure that we comply with all of these requirements. Moreover, the reporting requirements, rules and regulations will increase our legal and
financial compliance costs and will make some activities more time-consuming and costly. These reporting requirements, rules and regulations, coupled with the increase in potential litigation exposure associated with being a public company, could
also make it more difficult for us to attract and retain qualified persons to serve as our directors or executive officers, or to obtain certain types of insurance, including directors and officers insurance, on acceptable terms.

Our business is subject to the risks of earthquakes, fire, power outages, floods and other catastrophic events, and to interruption by manmade problems
such as terrorism. If any of our manufacturing, processing or storage facilities are damaged or destroyed, our business and prospects would be adversely affected.

A significant natural disaster, such as an earthquake, fire or flood, or a significant power outage, could have a material adverse impact on our business,
operating results and financial condition. If any of our manufacturing, processing or storage facilities, or any of the equipment in such facilities were to be damaged or destroyed, this would force us to delay or halt our clinical trial or
commercial production processes. We currently produce materials for our clinical trials at our manufacturing facilities located in Waltham, Massachusetts. If these facilities or the equipment in them are significantly damaged or destroyed, we may
not be able to quickly or inexpensively replace our manufacturing capacity. In addition, natural disasters could affect our third-party service providers and manufacturers ability to perform services and provide materials for us on a timely
basis. If these third parties do not successfully carry out their contractual duties or meet expected deadlines, our efforts to obtain regulatory approvals for, and to commercialize, our product candidates may be delayed or prevented. For example,
if a central laboratory holding all of our clinical product supply were to suffer a catastrophic loss of their facility, we would be required to delay our clinical trials. In addition, acts of terrorism could cause disruptions in our business or the
business of our third-party service providers, partners, customers or the economy as a whole.

Our loan and security agreement contains operating
covenants and restrictions that may restrict our business and financing activities.

We are party to a loan and security agreement with Silicon
Valley Bank, which provides for a line of credit of up to $1.75 million in the aggregate to finance certain equipment purchases. Borrowings under this agreement are secured by a first priority lien over all equipment purchased using the line of
credit. This agreement restricts our ability to, among other things:



| |  |  | sell assets;
| | - |  | ------------



| |  |  | engage in any business other than our current business;
| | - |  | -------------------------------------------------------



| |  |  | merge or consolidate with other entities;
| | - |  | -----------------------------------------



| |  |  | incur additional indebtedness;
| | - |  | ------------------------------



| |  |  | create liens on our assets;
| | - |  | ---------------------------



| |  |  | make investments;
| | - |  | -----------------



| |  |  | pay or declare dividends, or, in certain cases, repurchase our stock;
| | - |  | ---------------------------------------------------------------------



| |  |  | enter into transactions with affiliates; or
| | - |  | -------------------------------------------



| |  |  | make any payment on subordinated indebtedness.
| | - |  | ----------------------------------------------

The operating covenants and restrictions in the loan and
security agreement, as well as covenants and restrictions in any future financing agreements that we may enter into, may restrict our ability to finance our operations, engage in business activities or expand or fully pursue our business strategies.
Our ability to comply with these covenants may be affected by events beyond our control, and we may not be able to meet those covenants. A breach of any of these covenants could result in a default under the loan and security agreement or any future
financing agreement, which could cause all of the outstanding indebtedness under the facility to become immediately due and payable and terminate all commitments to extend further credit.



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We cannot assure you that we will continue to maintain sufficient cash reserves or that our business will ever
generate cash flow from operations at levels sufficient to permit us to pay principal, premium, if any, and interest on our indebtedness, or that our cash needs will not increase. If we are unable to generate sufficient cash flow or otherwise obtain
funds necessary to make required payments, or if we fail to comply with the various requirements of our loan and security agreement with Silicon Valley Bank, or any indebtedness which we may incur in the future, we would be in default under our
agreement with Silicon Valley Bank or other indebtedness we may incur in the future. Any default under our agreement with Silicon Valley Bank, or any indebtedness that we may incur in the future, could have a material adverse effect on our business,
results of operations and financial condition.

Risks Related to Regulatory Approval

If we fail to complete clinical trials and obtain regulatory approval for NeoCart, our business would be significantly harmed.

We have not completed clinical development for any of our product candidates and will only obtain regulatory approval to commercialize a product candidate if
we can demonstrate to the satisfaction of the FDA or comparable foreign regulatory authorities in well-designed and conducted clinical trials that the product candidate is safe, effective, and otherwise meets the appropriate standards required for
approval for a particular class of products or indication. Clinical trials are lengthy, complex and extremely expensive processes with uncertain results. A failure of one or more clinical trials may occur at any stage. Of the large number of
products in development, only a small percentage successfully complete the FDA regulatory approval process and are commercialized.

We have never obtained
marketing approval from the FDA or any comparable foreign regulatory authority for any product candidate. Our ability to obtain regulatory approval of our product candidates depends on, among other things, whether our clinical trials demonstrate
statistically significant efficacy with safety issues that do not potentially outweigh the therapeutic benefit of the product candidates, and whether the regulatory agencies agree that the data from our future clinical trials is sufficient to
support approval for any of our product candidates. The final results of our current and future clinical trials may not meet the FDAs or other regulatory agencies requirements to approve a product candidate for marketing, and the
regulatory agencies may otherwise determine that our manufacturing processes or facilities are insufficient to support approval. We may need to conduct more clinical trials than we currently anticipate. Even if we do receive FDA or other regulatory
agency approval, we may not be successful in commercializing approved product candidates. If any of these events occur, our business could be materially harmed and the value of our common stock would likely decline.

Our clinical development of NeoCart could be substantially delayed if the FDA requires us to conduct additional studies or trials or imposes other
requirements or restrictions.

We will need to generate and provide the FDA with comparability data from our new raw material production for the
collagen critical raw materials used in our manufacturing process and intended for clinical use. The FDA may also require us to generate additional preclinical or clinical data to support the use of these new critical raw material
suppliers in our NeoCart trial. Additionally, the FDA may impose other requirements on the protocol for our NeoCart trial. These additional requirements may cause further delays in our NeoCart trial which could require us to incur additional
development costs, seek funding for these increased costs or delay or cease our clinical development activities for NeoCart. Any inability to advance NeoCart or any other product candidate through clinical development would have a material adverse
effect on our business. For example, the recently enacted Food and Drug Administration Safety and Innovation Act made permanent the Pediatric Research Equity Act, which requires a sponsor to conduct pediatric studies for most tissue regeneration
products for a new active ingredient, new indication, new dosage form, new dosing regimen or new route of administration. Under the Pediatric Research Equity Act, original New Drug Applications and Biologic License Applications and supplements
thereto must contain a pediatric assessment unless the sponsor has received a deferral or waiver. The required assessment must evaluate the safety and effectiveness of the product for the claimed indications in all relevant pediatric subpopulations
and support dosing and administration for each pediatric subpopulation for



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which the product is safe and effective. The sponsor or FDA may request a deferral of pediatric studies for some or all of the pediatric subpopulations, and it is likely that we will request such
a deferral. A deferral may be granted for several reasons, including a finding that the tissue regeneration products is ready for approval for use in adults before pediatric studies are complete or that additional safety or effectiveness data needs
to be collected before the pediatric studies begin. The FDA must send a non-compliance letter to any sponsor that fails to submit the required assessment, keep a deferral current or fails to submit a request for approval of a pediatric formulation.

We are subject to numerous U.S. federal and state laws pertaining to health care fraud and abuse, including anti-kickback, self-referral, false
claims and fraud laws, and any violation by us of such laws could result in fines or other penalties.

If one or more of our product candidates is
approved, we will be subject to U.S. federal and state laws intended to prevent health care fraud and abuse. The federal anti-kickback statute prohibits the offer, receipt, or payment of remuneration in exchange for or to induce the referral of
patients or the use of products or services that would be paid for in whole or part by Medicare, Medicaid or other federal health care programs. Remuneration has been broadly defined to include anything of value, including cash, improper discounts,
and free or reduced price items and services. Many states have similar laws that apply to their state health care programs as well as private payors. Violations of the anti-kickback laws can result in exclusion from federal health care programs and
substantial civil and criminal penalties.

The False Claims Act imposes liability on persons who, among other things, present or cause to be presented
false or fraudulent claims for payment by a federal health care program. The False Claims Act has been used to prosecute persons submitting claims for payment that are inaccurate or fraudulent, that are for services not provided as claimed, or for
services that are not medically necessary. The False Claims Act includes a whistleblower provision that allows individuals to bring actions on behalf of the federal government and share a portion of the recovery of successful claims. If our
marketing or other arrangements were determined to violate the False Claims Act or anti-kickback or related laws, then our revenue could be adversely affected, which would likely harm our business, financial condition and results of operations.

State and federal authorities have aggressively targeted medical technology companies for alleged violations of these anti-fraud statutes, based on improper
research or consulting contracts with doctors, certain marketing arrangements that rely on volume-based pricing, off-label marketing schemes and other improper promotional practices. Companies targeted in such prosecutions have paid substantial
fines in the hundreds of millions of dollars or more, have been forced to implement extensive corrective action plans or Corporate Integrity Agreements, and have often become subject to consent decrees severely restricting the manner in which they
conduct their business. If we become the target of such an investigation or prosecution based on our contractual relationships with providers or institutions, or our marketing and promotional practices, we could face similar sanctions, which would
materially harm our business.

The Foreign Corrupt Practices Act and similar worldwide anti-bribery laws generally prohibit companies and their
intermediaries from making improper payments to non-U.S. officials for the purpose of obtaining or retaining business. We cannot assure you that our internal control policies and procedures will protect us from reckless or negligent acts committed
by our employees, future distributors, partners, collaborators or agents. Violations of these laws, or allegations of such violations, could result in fines, penalties or prosecution and have a negative impact on our business, results of operations
and reputation.

Also, the Physician Payment Sunshine Act imposes new reporting and disclosure requirements on drug, device, biologic and medical supply
manufacturers for any transfer of value made or distributed to prescribers and other healthcare providers. In addition, device and drug manufacturers will also be required to report and disclose any investment interests held by
physicians and their immediate family members during the preceding calendar year. Failure to submit required information may result in significant civil monetary penalties.



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Our failure to comply with extensive governmental regulation may significantly affect our operating
results.

Even if we obtain regulatory approval for some or all of our product candidates, we will continue to be subject to extensive ongoing
requirements by the FDA, as well as by a number of foreign, national, state and local agencies.

These regulations will impact many aspects of our
operations, including testing, research and development, manufacturing, safety, efficacy, labeling, storage, quality control, adverse event reporting, import and export, record keeping, approval, distribution, advertising and promotion of our future
products. We must also submit new or supplemental applications and obtain FDA approval for certain changes to an approved product, product labeling or manufacturing process. Application holders must also submit advertising and other promotional
material to the FDA and report on ongoing clinical trials. The FDA enforces post-marketing regulatory requirements, including cGMP requirements, through periodic unannounced inspections. We do not know whether we will pass any future FDA
inspections. Failure to pass an inspection could disrupt, delay or shut down our manufacturing operations. Failure to comply with applicable regulatory requirements could, among other things, result in:



| |  |  | administrative or judicial enforcement actions;
| | - |  | -----------------------------------------------



| |  |  | changes to advertising;
| | - |  | -----------------------



| |  |  | failure to obtain marketing approvals for our product candidates;
| | - |  | -----------------------------------------------------------------



| |  |  | revocation or suspension of regulatory approvals of products;
| | - |  | -------------------------------------------------------------



| |  |  | product seizures or recalls;
| | - |  | ----------------------------



| |  |  | court-ordered injunctions;
| | - |  | --------------------------



| |  |  | import detentions;
| | - |  | ------------------



| |  |  | delay, interruption or suspension of product manufacturing, distribution, marketing and sales; or
| | - |  | -------------------------------------------------------------------------------------------------



| |  |  | civil or criminal sanctions.
| | - |  | ----------------------------

The discovery of previously unknown problems with our product candidates or
future products may result in restrictions of the products, including withdrawal from the market. In addition, the FDA may revisit and change its prior determinations with regard to the safety or efficacy of our future products. If the FDAs
position changes, we may be required to change our labeling or cease to manufacture and market our future products. Even prior to any formal regulatory action, we could voluntarily decide to cease the distribution and sale or recall any of our
future products if concerns about their safety or efficacy develop.

In their regulation of advertising and other promotion, the FDA and the U.S. Federal
Trade Commission may issue correspondence alleging that some advertising or promotional practices are false, misleading or deceptive. The FDA and the U.S. Federal Trade Commission are authorized to impose a wide array of sanctions on companies for
such advertising and promotion practices, which could result in any of the following:



| |  |  | our incurrence of substantial expenses, including fines, penalties, legal fees and costs to comply with the FDAs requirements;
| | - |  | -------------------------------------------------------------------------------------------------------------------------------



| |  |  | our being required to change in the methods of marketing and selling products;
| | - |  | ------------------------------------------------------------------------------



| |  |  | our being required to take FDA mandated corrective action, which may include placing advertisements or sending letters to physicians rescinding previous advertisements or promotions; or
| | - |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | a disruption in the distribution of products and loss of sales until compliance with the FDAs position is obtained.
| | - |  | --------------------------------------------------------------------------------------------------------------------

Improper promotional activities may also lead to investigations by federal or state prosecutors, and result in criminal and civil penalties. If we become
subject to any of the above requirements, it could be damaging to our reputation and restrict our ability to sell or market our future products, and our business condition could be adversely affected. We may also incur significant expenses in
defending ourselves.



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Physicians may prescribe pharmaceutical or biologic products for uses that are not described in a products
labeling or differ from those tested by us and approved by the FDA. While such off-label uses are common and the FDA does not regulate physicians choice of treatments, the FDA does restrict a manufacturers communications on
the subject of off-label use. Companies cannot promote FDA-approved pharmaceutical or biologic products for off-label uses, but under certain limited circumstances they may disseminate to practitioners articles published in peer-reviewed
journals. To the extent allowed by the FDA, we intend to disseminate peer-reviewed articles on our future products to practitioners. If, however, our activities fail to comply with the FDAs regulations or guidelines, we may be subject to
warnings from, or enforcement action by, the FDA or other regulatory or law enforcement authorities.

Depending on the circumstances, failure to meet
post-approval requirements can result in criminal prosecution, fines or other penalties, injunctions, recall or seizure of products, total or partial suspension of production, denial or withdrawal of pre-marketing product approvals, or refusal to
allow us to enter into supply contracts, including government contracts. Any government investigation of alleged violations of law could require us to expend significant time and resources in response, and could generate negative publicity.

Even if we obtain regulatory approval for a product candidate, our products will remain subject to regulatory scrutiny.

Any product candidate for which we obtain marketing approval, along with the manufacturing processes, qualification testing, post-approval clinical data,
labeling and promotional activities for such product, will be subject to continuing and additional requirements of the FDA and other regulatory authorities. These requirements include submissions of safety and other post-marketing information,
reports, registration and listing requirements, cGMP requirements relating to quality control, quality assurance and corresponding maintenance of records and documents, and recordkeeping. Even if marketing approval of a product candidate is granted,
the approval may be subject to limitations on the indicated uses for which the product may be marketed or to conditions of approval, or contain requirements for costly post-marketing testing and surveillance to monitor the safety or efficacy of the
product. The FDA closely regulates the post-approval marketing and promotion of pharmaceutical and biological products to ensure such products are marketed only for the approved indications and in accordance with the provisions of the approved
labeling.

In addition, later discovery of previously unknown problems with our products, manufacturing processes, or failure to comply with regulatory
requirements, may lead to various adverse results, including:



| |  |  | restrictions on such products, manufacturers or manufacturing processes;
| | - |  | ------------------------------------------------------------------------



| |  |  | restrictions on the labeling or marketing of a product;
| | - |  | -------------------------------------------------------



| |  |  | restrictions on product distribution or use;
| | - |  | --------------------------------------------



| |  |  | requirements to conduct post-marketing clinical trials;
| | - |  | -------------------------------------------------------



| |  |  | requirements to institute a risk evaluation and mitigation strategy to monitor safety of the product post-approval;
| | - |  | -------------------------------------------------------------------------------------------------------------------



| |  |  | warning letters issued by the FDA or other regulatory authorities;
| | - |  | ------------------------------------------------------------------



| |  |  | withdrawal of the products from the market;
| | - |  | -------------------------------------------



| |  |  | refusal to approve pending applications or supplements to approved applications that we submit;
| | - |  | -----------------------------------------------------------------------------------------------



| |  |  | recalls of products, fines, restitution or disgorgement of profits or revenue;
| | - |  | ------------------------------------------------------------------------------



| |  |  | suspension, revocation or withdrawal of marketing approvals;
| | - |  | ------------------------------------------------------------



| |  |  | refusal to permit the import or export of our products; or
| | - |  | ----------------------------------------------------------



| |  |  | injunctions or the imposition of civil or criminal penalties.
| | - |  | -------------------------------------------------------------



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The FDAs policies may change and additional government regulations may be enacted that could prevent, limit
or delay regulatory approval of our product candidates. If we are slow or unable to adapt to changes in existing requirements or the adoption of new requirements or policies, or if we are not able to maintain regulatory compliance, we may lose any
marketing approval that we may have obtained, which would adversely affect our business, prospects and ability to achieve or sustain profitability.

Risks Related to Our Intellectual Property

Our
success depends on our ability to protect our intellectual property and our proprietary technologies.

Our commercial success depends in part on
our ability to obtain and maintain patent protection and trade secret protection for our product candidates, proprietary technologies and their uses as well as our ability to operate without infringing upon the proprietary rights of others. There
can be no assurance that our patent applications or those of our licensors will result in additional patents being issued or that issued patents will afford sufficient protection against competitors with similar technology, nor can there be any
assurance that the patents issued will not be infringed, designed around, or invalidated by third parties. Even issued patents may later be found unenforceable or may be modified or revoked in proceedings instituted by third parties before various
patent offices or in courts. The degree of future protection for our proprietary rights is uncertain. Only limited protection may be available and may not adequately protect our rights or permit us to gain or keep any competitive advantage. This
failure to properly protect the intellectual property rights relating to these product candidates could have a material adverse effect on our financial condition and results of operations.

Composition-of-matter patents are generally considered to be the strongest form of intellectual property protection as such patents provide protection without
regard to any method of use. We cannot be certain that the claims in our patent applications covering composition-of-matter of our product candidates will be considered patentable by the U.S. Patent and Trademark Office and courts in the United
States or by the patent offices and courts in foreign countries, nor can we be certain that the claims in our issued composition-of-matter patents will not be found invalid or unenforceable if challenged. Method-of-use patents protect the use of a
product for the specified method. This type of patent does not prevent a competitor from making and marketing a product that is identical to our product for a use that is outside the scope of the patented method. Moreover, even if competitors do not
actively promote their product for our targeted indications, physicians may prescribe these products off-label. Although off-label prescriptions may infringe or contribute to the infringement of method-of-use patents, the practice is
common and such infringement is difficult to prevent or prosecute.

The patent application process is subject to numerous risks and uncertainties, and
there can be no assurance that we or any of our future development partners will be successful in protecting our product candidates by obtaining and defending patents. These risks and uncertainties include the following:



| |  |  | The U.S. Patent and Trademark Office and various foreign governmental patent agencies require compliance with a number of procedural, documentary, fee payment and other provisions during the patent process. There
are situations in which noncompliance can result in abandonment or lapse of a patent or patent application, resulting in partial or complete loss of patent rights in the relevant jurisdiction. In such an event, competitors might be able to enter the
market earlier than would otherwise have been the case.
| | - |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Patent applications may not result in any patents being issued.
| | - |  | ---------------------------------------------------------------



| |  |  | Patents that may be issued or in-licensed may be challenged, invalidated, modified, revoked, circumvented, found to be unenforceable, or otherwise may not provide any competitive advantage.
| | - |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Our competitors, many of whom have substantially greater resources than we do and many of whom have made significant investments in competing technologies, may seek or may have already obtained patents that will limit,
interfere with, or eliminate our ability to make, use and sell our potential product candidates.
| | - |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



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| |  |  | There may be significant pressure on the U.S. government and international governmental bodies to limit the scope of patent protection both inside and outside the United States for treatments that prove successful, as a
matter of public policy regarding worldwide health concerns.
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Countries other than the United States may have patent laws less favorable to patentees than those upheld by U.S. courts, allowing foreign competitors a better opportunity to create, develop, and market competing
product candidates.
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

In addition, we rely on the protection of our trade secrets and proprietary know-how. Although we have taken steps to
protect our trade secrets and unpatented know-how, including entering into confidentiality agreements with third parties, and confidential information and inventions agreements with employees, consultants and advisors, third parties may still obtain
this information or may come upon this or similar information independently. If any of these events occurs or if we otherwise lose protection for our trade secrets or proprietary know-how, the value of this information may be greatly reduced.

If we or any of our future development or collaborative partners are sued for infringing intellectual property rights of third parties, it will be
costly and time consuming, and an unfavorable outcome in that litigation could have a material adverse effect on our business.

Our success also
depends on our ability and the ability of our current or future development or collaborative partners to develop, manufacture, market and sell our product candidates without infringing upon the proprietary rights of third parties. Numerous U.S. and
foreign-issued patents and pending patent applications owned by third parties exist in the fields in which we are developing product candidates, some of which may contain claims that overlap with the subject matter of our intellectual property or
are directed at our product candidates. When we become aware of patents held by third parties that may implicate the manufacture, development or commercialization of our product candidates, we evaluate our need to license rights to such patents. If
we need to license rights from third parties to manufacture, develop or commercialize our product candidates, there can be no assurance that we will be able to obtain a license on commercially reasonable terms or at all.

Because patent applications can take many years to issue there may be currently pending applications, unknown to us, that may later result in issued patents
upon which our product candidates or proprietary technologies may infringe. Similarly, there may be issued patents relevant to our product candidates of which we are not aware.

There is a substantial amount of litigation involving patent and other intellectual property rights in the biologics industry generally. If a third party
claims that we or any of our licensors, suppliers or development partners infringe upon a third-partys intellectual property rights, we may have to:



| |  |  | seek to obtain licenses that may not be available on commercially reasonable terms, if at all;
| | - |  | ----------------------------------------------------------------------------------------------



| |  |  | abandon an infringing product candidate or redesign our products or processes to avoid infringement;
| | - |  | ----------------------------------------------------------------------------------------------------



| |  |  | pay substantial damages including, in an exceptional case, treble damages and attorneys fees, which we may have to pay if a court decides that the product candidate or proprietary technology at issue infringes
upon or violates the third-partys rights;
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | pay substantial royalties or fees or grant cross-licenses to our technology; or
| | - |  | -------------------------------------------------------------------------------



| |  |  | defend litigation or administrative proceedings that may be costly whether we win or lose, and which could result in a substantial diversion of our financial and management resources.
| | - |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

We may be involved in lawsuits to protect or enforce our patents or the patents of our licensors, which could be expensive, time consuming and
unsuccessful.

Competitors may infringe upon our patents or the patents of our licensors. To counter infringement or unauthorized use, we may be
required to file infringement claims, which can be expensive and time consuming. An adverse result in any litigation or defense proceedings could put one or more of our patents at risk of being invalidated, found to be unenforceable or interpreted
narrowly and could put our patent applications at risk of not



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issuing. Furthermore, because of the substantial amount of discovery required in connection with intellectual property litigation, there is a risk that some of our confidential information could
be compromised by disclosure during this type of litigation.

Most of our competitors are larger than we are and have substantially greater resources.
They are, therefore, likely to be able to sustain the costs of complex patent litigation longer than we could. In addition, the uncertainties associated with litigation could have a material adverse effect on our ability to raise the funds necessary
to continue our clinical trials, continue our internal research programs, in-license needed technology, or enter into development partnerships that would help us bring our product candidates to market.

In addition, any future patent litigation, interference or other administrative proceedings will result in additional expense and distraction of our
personnel. An adverse outcome in such litigation or proceedings may expose us, or any of our future development partners to loss of our proprietary position, expose us to significant liabilities or require us to seek licenses that may not be
available on commercially acceptable terms, if at all.

Our issued patents could be found invalid or unenforceable if challenged in court which
could have a material adverse effect on our business.

If we or any of our future development partners were to initiate legal proceedings against a
third party to enforce a patent covering one of our product candidates or one of our future product candidates, the defendant could counterclaim that our patent is invalid or unenforceable. In patent litigation in the United States, defendant
counterclaims alleging invalidity or unenforceability are commonplace. Grounds for a validity challenge could be an alleged failure to meet any of several statutory requirements, including lack of novelty, obviousness or non- enablement. Grounds for
an unenforceability assertion could be an allegation that someone connected with prosecution of the patent withheld relevant information from the U.S. Patent and Trademark Office, or made a misleading statement, during prosecution. Third parties may
also raise similar claims before the U.S. Patent and Trademark Office even outside the context of litigation. The outcome following legal assertions of invalidity and unenforceability is unpredictable. With respect to the validity question, for
example, we cannot be certain that there is no invalidating prior art, of which we and the patent examiner were unaware during prosecution. If a defendant were to prevail on a legal assertion of invalidity or unenforceability, we would lose at least
part, and perhaps all, of the patent protection on such product candidate. Such a loss of patent protection would have a material adverse impact on our business.

We may be subject to claims that our consultants or independent contractors have wrongfully used or disclosed alleged trade secrets of their other
clients or former employers to us, which could subject us to costly litigation.

As is common in the biotechnology industry, we engage the services
of consultants to assist us in the development of our product candidates. Many of these consultants were previously employed at, or may have previously or may be currently providing consulting services to, other biotechnology or pharmaceutical
companies, including our competitors or potential competitors. We may become subject to claims that our company or a consultant inadvertently or otherwise used or disclosed trade secrets or other information proprietary to their former employers or
their former or current clients. Litigation may be necessary to defend against these claims. Even if we are successful in defending against these claims, litigation could result in substantial costs and be a distraction to our management team.

Changes in U.S. patent law could diminish the value of patents in general, which could materially impair our ability to protect our product candidates.

As is the case with other biotechnology companies, our success is heavily dependent on intellectual property, particularly patents. Obtaining and
enforcing patents in the biotechnology industry involve technological and legal complexity. Therefore, obtaining and enforcing biotechnology patents is costly, time consuming and inherently uncertain. In addition, Congress recently passed patent
reform legislation. The Supreme Court has ruled on several patent cases in recent years, either narrowing the scope of patent protection available in certain



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circumstances or weakening the rights of patent owners in certain situations. In addition to increasing uncertainty with regard to our ability to obtain patents in the future, this combination of
events has created uncertainty with respect to the value of patents, once obtained. Depending on decisions by the U.S. Congress, the federal courts and the U.S. Patent and Trademark Office, the laws and regulations governing patents could change in
unpredictable ways that would weaken our ability to obtain new patents or to enforce our existing patents and patents we might obtain in the future.

We may not be able to protect our intellectual property rights throughout the world which could materially, negatively affect our business.

Filing, prosecuting and defending patents on product candidates in all countries throughout the world would be prohibitively expensive, and our intellectual
property rights in some countries outside the United States can be less extensive than those in the United States. In addition, the laws of some foreign countries do not protect intellectual property rights to the same extent as federal and state
laws in the United States. Consequently, we may not be able to prevent third parties from practicing our inventions in all countries outside the United States, or from selling or importing products made using our inventions in and into the United
States or other jurisdictions. Competitors may use our technologies in jurisdictions where we have not obtained patent protection to develop their own products and further, may export otherwise infringing products to territories where we have patent
protection, but enforcement is not as strong as that in the United States. These products may compete with our product candidates and our patents or other intellectual property rights may not be effective or sufficient to prevent them from
competing.

Many companies have encountered significant problems in protecting and defending intellectual property rights in foreign jurisdictions. The
legal systems of certain countries, particularly certain developing countries, do not favor the enforcement of patents and other intellectual property protection, particularly those relating to biotechnology, which could make it difficult for us to
stop the infringement of our patents or marketing of competing products in violation of our proprietary rights generally. Proceedings to enforce our patent rights in foreign jurisdictions could result in substantial costs and divert our efforts and
attention from other aspects of our business, could put our patents at risk of being invalidated or interpreted narrowly and our patent applications at risk of not issuing and could provoke third parties to assert claims against us. We may not
prevail in any lawsuits that we initiate and the damages or other remedies awarded, if any, may not be commercially meaningful. Accordingly, our efforts to enforce our intellectual property rights around the world may be inadequate to obtain a
significant commercial advantage from the intellectual property that we develop or license and may adversely affect our business.

If our trademarks
and trade names are not adequately protected, then we may not be able to build name recognition in our markets of interest and our business may be adversely affected.

Our registered or unregistered trademarks or trade names may be challenged, infringed, circumvented or declared generic or determined to be infringing on other
marks. We may not be able to protect our rights to these trademarks and trade names, which we need to build name recognition by potential partners or customers in our markets of interest. Over the long term, if we are unable to establish name
recognition based on our trademarks and trade names, then we may not be able to compete effectively and our business may be adversely affected.

Risks
Related to Our Common Stock

The trading price of our common stock has been, and is likely to continue to be, volatile, and you might not be able
to sell your shares at or above the price you paid.

We completed our initial public offering in December 2014 at an initial price to the public of
$11.00 per share. Subsequently, as of March 20, 2015, our common stock has traded as low as $7.04 per share. The realization of any of the risks described in these risk factors or other unforeseen risks could have a dramatic and adverse effect
on the market price of our common stock. The trading price of our common stock is likely to continue to be



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highly volatile and could be subject to wide fluctuations in response to various factors, some of which are beyond our control. These factors include those discussed elsewhere in this Risk
Factors section and others such as:



| |  |  | the delay or failure in initiating, enrolling or completing preclinical studies or clinical trials, or unsatisfactory results of these trials;
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | announcements about us or about our competitors including clinical trial results, regulatory approvals, or new product candidate introductions;
| | - |  | -----------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | developments concerning our current or future development partner, licensors or product candidate manufacturers;
| | - |  | ----------------------------------------------------------------------------------------------------------------



| |  |  | litigation and other developments relating to our patents or other proprietary rights or those of our competitors;
| | - |  | ------------------------------------------------------------------------------------------------------------------



| |  |  | conditions in the pharmaceutical or biotechnology industries and the economy as a whole;
| | - |  | ----------------------------------------------------------------------------------------



| |  |  | governmental regulation and legislation;
| | - |  | ----------------------------------------



| |  |  | the recruitment or departure of members of our board of directors, management team or other key personnel, including recruitment of a new chief financial officer;
| | - |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | changes in our operating results;
| | - |  | ---------------------------------



| |  |  | any changes in the financial projections we may provide to the public, our failure to meet these projections, or changes in recommendations by any securities analysts that elect to follow our common stock;
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | any change in securities analysts estimates of our performance, or our failure to meet analysts expectations;
| | - |  | ---------------------------------------------------------------------------------------------------------------



| |  |  | the expiration of market standoff or contractual lock-up agreements;
| | - |  | --------------------------------------------------------------------



| |  |  | sales or potential sales of substantial amounts of our common stock; and
| | - |  | ------------------------------------------------------------------------



| |  |  | price and volume fluctuations in the overall stock market or resulting from inconsistent trading volume levels of our shares.
| | - |  | -----------------------------------------------------------------------------------------------------------------------------

In recent years, the stock market in general, and the market for pharmaceutical and biotechnological companies in particular, has experienced extreme price
and volume fluctuations that have often been unrelated or disproportionate to changes in the operating performance of the companies whose stock is experiencing those price and volume fluctuations. Broad market and industry factors may seriously
affect the market price of our common stock, regardless of our actual operating performance.

As a newly public company, our stock price may be
volatile, and securities class action litigation has often been instituted against companies following periods of volatility of their stock price. Any such litigation, if instituted against us, could result in substantial costs and a diversion of
our managements attention and resources.

In the past, following periods of volatility in the overall market and the market price of a
particular companys securities, securities class action litigation has often been instituted against these companies. This litigation, if instituted against us, could result in substantial costs and a diversion of our managements
attention and resources.

If securities analysts do not publish research or publish unfavorable research about our business, our stock price and
trading volume could decline.

The trading market for our common stock will depend in part on the research and reports that securities and industry
analysts publish about us or our business. We currently have limited research coverage by securities analysts. If no additional securities or industry analysts commence coverage of our company, the trading price for



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our stock could suffer. In the event we obtain additional securities or industry analyst coverage, if one or more of the analysts who covers us downgrades our stock or publishes unfavorable
research about our business, or if our clinical trials or operating results fail to meet the analysts expectations, our stock price would likely decline. If one or more of these analysts ceases coverage of our company or fails to publish
reports on us regularly, demand for our stock could decrease, which could cause our stock price and trading volume to decline.

Raising additional
funds by issuing securities or through licensing or lending arrangements may cause dilution to our existing stockholders, restrict our operations or require us to relinquish proprietary rights.

We will need to raise additional funding in order to complete the clinical development of, create additional manufacturing capacity and to commercialize
NeoCart and to conduct the research and development and clinical and regulatory activities necessary to bring other product candidates to market. To the extent that we raise additional capital by issuing equity securities, the share ownership of
existing stockholders will be diluted. Any future debt financing may involve covenants that restrict our operations, including limitations on our ability to incur liens or additional debt, pay dividends, redeem our stock, make certain investments,
and engage in certain merger, consolidation, or asset sale transactions. In addition, if we seek funds through arrangements with collaborative partners, these arrangements may require us to relinquish rights to some of our technologies or product
candidates or otherwise agree to terms unfavorable to us.

We have never paid and do not intend to pay cash dividends and, consequently, your
ability to achieve a return on your investment will depend on appreciation in the price of our common stock.

We have never paid cash dividends on
any of our capital stock, and we currently intend to retain future earnings, if any, to fund the development and growth of our business. Therefore, you are not likely to receive any dividends on our common stock for the foreseeable future or at all.
Since we do not intend to pay dividends, your ability to receive a return on your investment will depend on any future appreciation in the market value of our common stock. There is no guarantee that our common stock will appreciate or even maintain
the price at which you have purchased it.

Our principal stockholders and management own a significant percentage of our stock and will be able to
exert significant control over matters subject to stockholder approval.

As of March 20, 2015, our executive officers, directors, holders of
more than 5% of our capital stock and their respective affiliates beneficially owned 75.6% of our outstanding capital stock. These stockholders have the ability to influence us through their ownership position. These stockholders are able to
determine all matters requiring stockholder approval. For example, these stockholders are able to control elections of directors, amendments of our organizational documents, or approval of any merger, sale of assets, or other major corporate
transaction. This may prevent or discourage unsolicited acquisition proposals or offers for our common stock that you may feel are in your best interest as one of our stockholders.

Substantial future sales of shares by existing stockholders, including pursuant to our equity incentive plans, or the perception that such sales may
occur, could cause our stock price to decline.

If our existing stockholders, particularly our directors and executive officers and the venture
capital funds affiliated with our current and former directors, sell substantial amounts of our common stock in the public market, or are perceived by the public market as intending to sell substantial amounts of our common stock, the trading price
of our common stock could decline below the initial public offering price. As of March 20, 2015, we have 13,220,012 outstanding shares of common stock. Of these shares, only 6,374,091 shares of common stock sold in our initial public offering
and registered shares issued pursuant to our equity plans are freely tradable in the public market, subject to any applicable lock-up agreements or Rule 144 transfer restrictions applicable to affiliates. Our officers, directors and holders of
substantially all of our equity securities have entered into contractual lock-up agreements with the underwriters pursuant to which they have agreed, subject to certain exceptions, not to sell or otherwise transfer any of their common stock or
securities convertible into or



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exchangeable for shares of common stock until June 1, 2015. However, we and the lead underwriter in our initial public offering may permit these holders to sell shares prior to the
expiration of the lock-up agreements with the underwriters.

After the contractual lock-up agreements pertaining to our initial public expire on
June 1, 2015, up to an additional 5,646,175 shares will be eligible for sale in the public market, 4,785,896 of which are held by directors, executive officers and other affiliates and will be subject to volume and other limitations under Rule
144 under the Securities Act.

The 866,833 shares that are subject to outstanding options as of March 20, 2015 will become eligible for sale in the
public market to the extent permitted by the provisions of various vesting agreements, the contractual lock-up agreements, and Rules 144 and 701 under the Securities Act.

Some of our existing security holders have demand and piggyback rights to require us to register with the SEC up to 5,643,832 shares of our common stock,
subject to expiration of the contractual lock-up agreements. If we register these shares of common stock, the stockholders would be able to sell those shares freely in the public market, subject to Rule 144 transfer restrictions applicable to
affiliates.

We have registered an additional 1,415,088 shares of our common stock that we may issue under our equity plans. Once we issue these shares,
they can be freely sold in the public market upon issuance, subject to any vesting restriction, contractual lock-up agreements, or Rule 144 transfer restrictions applicable to affiliates.

Provisions in our certificate of incorporation and bylaws and Delaware law might discourage, delay or prevent a change in control of our company or
changes in our management and, therefore, depress the market price of our common stock.

Our certificate of incorporation and bylaws contain
provisions that could depress the market price of our common stock by acting to discourage, delay or prevent a change in control of our company or changes in our management that the stockholders of our company may deem advantageous. These provisions
among other things:



| |  |  | establish a classified board of directors so that not all members of our board are elected at one time;
| | - |  | -------------------------------------------------------------------------------------------------------



| |  |  | permit the board of directors to establish the number of directors;
| | - |  | -------------------------------------------------------------------



| |  |  | provide that directors may only be removed for cause;
| | - |  | -------------------------------------------------------



| |  |  | require super-majority voting to amend some provisions in our certificate of incorporation and bylaws;
| | - |  | ------------------------------------------------------------------------------------------------------



| |  |  | authorize the issuance of blank check preferred stock that our board of directors could use to implement a stockholder rights plan;
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------



| |  |  | eliminate the ability of our stockholders to call special meetings of stockholders;
| | - |  | -----------------------------------------------------------------------------------



| |  |  | prohibit stockholder action by written consent, which requires all stockholder actions to be taken at a meeting of our stockholders;
| | - |  | ------------------------------------------------------------------------------------------------------------------------------------



| |  |  | provide that the board of directors is expressly authorized to make, alter or repeal our bylaws; and
| | - |  | ----------------------------------------------------------------------------------------------------



| |  |  | establish advance notice requirements for nominations for election to our board of directors or for proposing matters that can be acted upon by stockholders at annual stockholder meetings.
| | - |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

In addition, Section 203 of the Delaware General Corporation Law may discourage, delay or prevent a change in control of our company. Section 203
imposes certain restrictions on merger, business combinations and other transactions between us and holders of 15% or more of our common stock.



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We are an emerging growth company and the extended transition period for complying with new or revised
financial accounting standards and reduced disclosure and governance requirements applicable to emerging growth companies could make our common stock less attractive to investors.

We are an emerging growth company. Under the Jumpstart Our Business Startups Act, emerging growth companies can delay adopting new or revised accounting
standards until such time as those standards apply to private companies. We plan to avail ourselves of this exemption from new or revised accounting standards and, therefore, we may not be subject to the same new or revised accounting standards as
other public companies that are not emerging growth companies.

For as long as we continue to be an emerging growth company, we also intend to take
advantage of certain other exemptions from various reporting requirements that are applicable to other public companies, including reduced disclosure obligations regarding executive compensation in our periodic reports and proxy statements,
exemptions from the requirements of holding a nonbinding advisory stockholder vote on executive compensation and any golden parachute payments not previously approved, exemption from the requirement of auditor attestation on our internal control
over financial reporting and exemption from any requirement that may be adopted by the Public Company Accounting Oversight Board regarding mandatory audit firm rotation or a supplement to the auditors report providing additional information
about the audit and the financial statements (auditor discussion and analysis). If we do, the information that we provide stockholders may be different than what is available with respect to other public companies.

Investors could find our common stock less attractive because we will rely on these exemptions, which may make it more difficult for investors to compare our
business with other companies in our industry. If some investors find our common stock less attractive as a result, there may be a less active trading market for our common stock and our stock price may be more volatile. In addition, it may be
difficult for us to raise additional capital as and when we need it. If we are unable to do so, our financial condition and results of operations could be materially and adversely affected.

We will remain an emerging growth company until the earliest of (1) the end of the fiscal year in which the market value of our common stock that is held
by non-affiliates exceeds $700.0 million as of the end of the second fiscal quarter, (2) the end of the fiscal year in which we have total annual gross revenue of $1.0 billion or more during such fiscal year, (3) the date on which we
issue more than $1.0 billion in non-convertible debt in a three-year period or (4) December 31, 2019, the end of the fiscal year following the fifth anniversary of the completion of our initial public offering.



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|ITEM 1B. | UNRESOLVED STAFF COMMENTS
|-------- | -------------------------

Not applicable.



|ITEM 2. | PROPERTIES
|------- | ----------

Our corporate headquarters are currently located in Waltham, Massachusetts,
for which we have a lease until December 2017, renewable for two additional five-year terms. We lease approximately 25,472 square feet of office, manufacturing and laboratory space, including 5,700 square feet of cGMP clean room space that is
outfitted for NeoCart manufacturing. This facility also houses our quality staff, including quality control testing, necessary to support NeoCart manufacturing. We have subleased approximately 7,310 square feet of our facility to a tenant through
May 2015, at which time this space will be returned for our use. The Waltham facility is expected to be adequate for a potential initial commercial launch of NeoCart in 2017.

Additionally, we lease approximately 16,601 square feet of laboratory and manufacturing space, along with related office space, in Lexington, Massachusetts.
The term of the Lexington lease expires October 1, 2022 and can be extended for one additional five year period thereafter. This facility includes clean room space that will be utilized for production of our CT3 adhesive components, our
collagen scaffold and the collagen raw material used to produce the scaffold and components of the CT3 adhesive, once the build-out of the space is completed. This facility also includes necessary space for quality operations, including necessary
quality control testing.

Management believes that the leased facilities are suitable and adequate to meet our anticipated near-term needs.



|ITEM 3. | LEGAL PROCEEDINGS
|------- | -----------------

From time to time, we may become subject to legal proceedings, claims
and litigation arising in the ordinary course of business. We currently are not a party to any threatened or pending litigation and do not have contingency reserves established for any litigation liabilities. However, third parties might allege that
we are infringing their patent rights or that we are otherwise violating their intellectual property rights, including trade names and trademarks. Such third parties may resort to litigation. We accrue contingent liabilities when it is probable that
future expenditures will be made and such expenditures can be reasonably estimated.



|ITEM 4. | MINE SAFETY DISCLOSURES
|------- | -----------------------

Not applicable.



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PART II



|ITEM 5. | MARKET FOR REGISTRANTS COMMON EQUITY, RELATED SHAREHOLDER MATTERS AND ISSUER PURCHASES OF EQUITY SECURITIES
|------- | ------------------------------------------------------------------------------------------------------------

Our common stock has been trading on The NASDAQ Global Market (NASDAQ) under the symbol HSGX since our initial public offering on December 3,
2014. Prior to that time, there was no established public trading market for our common stock. The following table sets forth, for the periods indicated, the range of high and low sale prices of our common stock as reported by NASDAQ.



|                                                 |  |      |       |  |     |   |       | 
|------------------------------------------------ |  | ---- | ----- |  | --- | - | ----- | 
|Year Ended December 31, 2014                     |  | High |       |  | Low |  
|Fourth quarter 2014 (beginning December 3, 2014) |  | $    | 12.97 |  |     | $ | 10.25 | 

Holders

As of
March 20, 2015, there were 25 holders of record of our common stock. The number of holders of record of our common stock does not reflect the number of beneficial holders whose shares are held by depositors, brokers or other nominees.

Dividends

We have not declared or paid any cash
dividends on our common stock since our inception. We do not plan to pay dividends in the foreseeable future. Under our credit facility, we have agreed not to pay any dividends so long as it has any outstanding obligations thereunder. We currently
intend to retain earnings, if any, to finance our growth. Consequently, stockholders will need to sell shares of our common stock to realize a return on their investment, if any.

Recent Sales of Unregistered Securities

Sales of
Unregistered Securities

2012 Series A Preferred Stock Financing

In 2012, we issued and sold an aggregate of 2,647,350 shares of Series A Preferred Stock at a price per share of $10.80 for an aggregate purchase price of
$26.5 million, net of issuance costs (Series A Financing). In connection with the Series A Financing, we issued warrants to investors and advisors exercisable for an aggregate of 209,805 shares of our common stock at a weighted average exercise
price of $0.58 per share. In connection with our initial public offering, certain of these warrants representing 47,828 shares of our common stock were net exercise for 44,531 shares of our common stock which were issued upon consummation of our
initial public offering. Additionally, warrants representing 5,839 of our common stock held by certain investors were surrendered in connection with our initial public offering. As of March 20, 2015, warrants representing 156,138 shares of our
common stock originally issued in connection with the Series A Financing remain outstanding.

2013 Series A-1 Preferred Stock Financing

In 2013, we amended and restated the Series A Purchase Agreement in order to, among other matters, waive certain milestones and raise an additional $10.3
million (Series A-1 Financing) from the sale of 955,568 shares of our Series A-1 Preferred Stock at a price per share of $10.80. The amended and restated Series A Purchase Agreement also provided for the purchase and sale of 955,565 additional
shares of Series A-1 Preferred Stock (Conditional Shares) to the investors in the Series A-1 Financing upon the completion of certain conditions (Conditional Closing). The Conditional Closing was completed on May 27, 2014 and the Conditional
Shares were sold and issued on that date, resulting in aggregate proceeds of $10.3 million.



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Also in connection with the Series A-1 Financing, our amended and restated Series A Purchase Agreement, along
with several other escrow and stockholder agreements executed therewith, provided for the satisfaction of obligations of certain of our stockholders pursuant to that certain agreement with Purpose Co., Ltd. (f/k/a Takagi Sangyo Co. Ltd. and f/k/a
Takagi Industrial Co., Ltd.) (Purpose) dated June 22, 2012 (Purpose Agreement). Pursuant to these agreements, we issued 55,620 shares of common stock to Purpose upon consummation of our initial public offering.

The Series A and Series A-1 Financings were made in reliance on Rule 506 promulgated under the Securities Act of 1933, as amended (the Securities Act) and was
made without general solicitation or advertising. Each purchaser represented that it was an accredited investor with access to information about us sufficient to evaluate the investment and that the common stock was being acquired without a view to
distribution or resale in violation of the Securities Act. A Form D filing was made in accordance with the requirements of Regulation D. No underwriters were involved in the foregoing sales of securities.

Warrant Issuance to Silicon Valley Bank

In July 2014, in
connection with entering into a loan and security agreement with Silicon Valley Bank, we issued a warrant to Silicon Valley Bank exercisable for an aggregate of 6,566 shares of our common stock, subject to certain adjustments, at an exercise price
of $7.99 per share. The warrant is immediately exercisable and terminates ten years after the date issued.

No underwriters were involved in the foregoing
sale of securities. The issuance of the securities described above was deemed to be exempt from registration under the Securities Act in reliance on Section 4(2) of the Securities Act under the Securities Act. The recipient of securities in
such transaction represented its intention to acquire securities for investment only and not with a view to or for sale in connection with any distribution thereof and appropriate legends were affixed to the warrant issued in such transaction.

Intrexon Collaboration Agreement and Obligations

In
September 2014, we entered into our exclusive channel collaboration agreement (the ECC) with Intrexon governing a channel collaboration arrangement. On such date, we also issued a 6% convertible promissory note to Intrexon in
a principal amount of $10.0 million as partial consideration for the execution and delivery of the ECC. The convertible promissory note, the principal and accrued but unpaid interest on the note converted into 918,206 shares of our common stock upon
the consummation of our initial public offering.

No underwriters were involved in the foregoing sale of securities. The issuances of the securities
described above were deemed to be exempt from registration under the Securities Act in reliance on Section 4(2) of the Securities Act under the Securities Act. The recipients of securities in such transaction represented their intention to
acquire the securities for investment only and not with a view to or for sale in connection with any distribution thereof and appropriate legends were affixed to the stock certificates issued in such transaction.

Bridge Financing

In November 2014, our board of
directors approved a bridge financing pursuant to which certain of our existing stockholders, including entities affiliated with Sofinnova Venture Partners, Split Rock Partners and Wilmslow Estates Limited, our three principal stockholders, would
purchase 6% convertible promissory notes in a principal amount of up to $2.5 million. Of this amount, $1.0 million of such notes were issued in November 2014 to one of our existing investors who is not a principal stockholder. The outstanding
principal under this outstanding note converted into 90,909 shares of our common stock upon the consummation of our initial public offering.

No
underwriters were involved in the foregoing sale of securities. The issuances of the securities described above were deemed to be exempt from registration under the Securities Act in reliance on Section 4(2) of the Securities



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Act under the Securities Act. The recipients of securities in such transaction represented their intention to acquire the securities for investment only and not with a view to or for sale in
connection with any distribution thereof and appropriate legends were affixed to the stock certificates issued in such transaction.

Warrant Issuance
to Danforth Advisors, LLC

In March 2015, in connection with entering into a consulting agreement with Danforth Advisors, LLC, we issued a warrant to
Danforth Advisors, LLC exercisable for an aggregate of 7,398 shares of our common stock, subject to certain adjustments, at an exercise price of $9.75 per share. The shares underlying the warrant vest on a monthly basis over two years; provided
that, 50% of the shares issuable upon exercise of the warrant shall become fully vested and exercisable if we terminate the consulting agreement for any reason other than for cause before March 12, 2016, and the remaining 50% of the shares
issuable upon exercise of the warrant shall become fully vested and exercisable if we terminate the consulting agreement for any reason other than for cause upon the extension of the consulting agreement after March 12, 2016.

No underwriters were involved in the foregoing sale of securities. The issuance of the securities described above was deemed to be exempt from registration
under the Securities Act in reliance on Section 4(2) of the Securities Act under the Securities Act. The recipient of securities in such transaction represented its intention to acquire securities for investment only and not with a view to or
for sale in connection with any distribution thereof and appropriate legends were affixed to the warrant issued in such transaction.

Option Grants

Under the 2012 Equity Incentive Plan, we granted stock options to purchase shares of our common stock to certain of our employees, officers,
consultants and advisors, as follows: (a) from August 15, 2012 to July 16, 2013, we granted stock options to purchase an aggregate of 549,023 shares of our common stock at an exercise price of $0.76 per share; (b) on
October 31, 2012, we issued 5,654 shares of restricted common stock at a price of $0.01 per share; (c) on April 23, 2013, we issued 7,554 shares of restricted common stock at a price of $0.01 per share; (d) on December 11,
2013, we granted stock options to purchase an aggregate of 125,246 shares of our common stock at an exercise price of $7.13 per share; (e) on April 30, 2014, we granted stock options to purchase an aggregate of 213,935 shares of our common
stock at an exercise price of $7.99 per share; and (f) on July 17, 2014, we granted stock options to purchase an aggregate of 91,493 shares of our common stock at an exercise price of $8.97 per share. These issuances were undertaken in
reliance upon the exemption from registration requirements of Rule 701 of the Securities Act.

Use of Proceeds

On December 8, 2014, we completed our initial public offering whereby 5,909,091 shares of common stock were sold at a public offering price of $11.00 per
share for an aggregate offering price of $65.0 million. On January 6, 2015, an additional 465,000 shares of common stock were sold at the initial public offering price of $11.00 per share following the underwriters exercise in part of
their over-allotment option (Underwriters Option). The offer and sale of all of the shares in our initial public offering and pursuant to the Underwriters Option were registered under the Securities Act pursuant to a registration
statement on Form S-1 (File No. 333- 199202), which was declared effective by the SEC on December 2, 2014. The offering commenced as of December 2, 2014 and did not terminate before all of the securities registered in the registration
statement were sold. The syndicate of underwriters was led by Cowen and Company, Needham & Company and Canaccord Genuity, as joint book-running managers, and BTIG, as co-manager. We raised approximately $62.8 million in net proceeds after
deducting underwriting discounts and commissions and other offering expenses. No payments were made by us to directors, officers or persons owning ten percent or more of our common stock or to their associates, or to our affiliates, other than
payments in the ordinary course of business to officers for salaries and to non-employee directors as compensation for board committee service.



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There has been no material change in the planned use of proceeds from our initial public offering as described in
our prospectus dated December 2, 2014, filed with the SEC pursuant to Rule 424(b)(4) under the Securities Act of 1933, as amended.



|ITEM 6. | SELECTED CONSOLIDATED FINANCIAL DATA
|------- | ------------------------------------

Not applicable.



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|ITEM 7. | MANAGEMENTS DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS
|------- | -------------------------------------------------------------------------------------

The following discussion and analysis should be read in conjunction with our audited annual consolidated financial statements and the related notes that
appear elsewhere in this annual report on Form 10-K. This discussion contains forward-looking statements reflecting our current expectations that involve risks and uncertainties. Actual results may differ materially from those discussed in these
forward-looking statements due to a number of factors, including those set forth in the section entitled Risk Factors and elsewhere in this annual report on Form 10-K. For further information regarding forward-looking statements, please
refer to the Special Note Regarding Forward-Looking Statements at the beginning of Part I of this annual report on Form 10-K.

Overview

We are a regenerative medicine company focused
on developing and commercializing products in the musculoskeletal segment of the marketplace. Our first product candidate, NeoCart, is being investigated in a Phase 3 clinical trial. NeoCart utilizes various aspects of our regenerative medicine
platform to develop an innovative tissue implant intended to treat tissue injury in the field of orthopedics, specifically cartilage damage in the knee. NeoCart is an investigational product and has not been approved for sale in any jurisdiction,
including the United States. We have no other products that are approved for sale in the United States and currently we are not selling any products that may be approved for sale in other jurisdictions. Our regenerative medicine platform provides
the tools to develop NeoCart.

Our regenerative medicine platform combines expertise in the following areas:



| |  |  | Cell processing: the handling of a tissue biopsy, extraction of cells, and expansion of the cells;
| | - |  | --------------------------------------------------------------------------------------------------



| |  |  | Scaffold: three-dimensional structures that enable the proper distribution of cells and organize cells in their natural environment to support tissue formation;
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Tissue engineering: the use of a combination of cells, engineering and materials to improve or replace biological functions; and
| | - |  | --------------------------------------------------------------------------------------------------------------------------------



| |  |  | Bioadhesives: natural, biocompatible materials that act as adhesives for biological tissue.
| | - |  | -------------------------------------------------------------------------------------------

NeoCart is a
cartilage-like implant created using a patients own cartilage cells through a series of tissue engineering processes.

We have devoted substantially
all of our resources to the development of our regenerative medicine platform, the preclinical and clinical advancement of our product candidates, the creation and protection of related intellectual property and the provision of general and
administrative support for these operations. We have generated revenue from product sales, collaboration activities and grants. We have funded our operations primarily through the private placement of preferred stock and convertible promissory
notes, through commercial bank debt and the proceeds of our initial public offering.

We have incurred net losses in each year since inception. Our
accumulated deficit was $133.5 million as of December 31, 2014. Substantially all of our net losses resulted from costs incurred in connection with our research and development programs and from general and administrative costs associated with
our operations. We expect to continue to incur significant expenses and increasing operating losses for at least the next several years. Our net losses may fluctuate significantly from quarter to quarter and year to year. We expect our expenses will
increase substantially in connection with our ongoing activities as we:



| |  |  | conduct clinical trials of our product candidates;
| | - |  | --------------------------------------------------



| |  |  | continue scale up and improvement of our manufacturing processes;
| | - |  | -----------------------------------------------------------------



| |  |  | transition our technology transfer and manufacturing location;
| | - |  | --------------------------------------------------------------



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| |  |  | continue our research and development efforts;
| | - |  | ----------------------------------------------



| |  |  | manufacture preclinical study and clinical trial materials;
| | - |  | -----------------------------------------------------------



| |  |  | maintain, expand and protect our intellectual property portfolio;
| | - |  | -----------------------------------------------------------------



| |  |  | seek regulatory approvals for our product candidates that successfully complete clinical trials;
| | - |  | ------------------------------------------------------------------------------------------------



| |  |  | hire additional clinical, quality control and technical personnel to conduct our clinical trials;
| | - |  | -------------------------------------------------------------------------------------------------



| |  |  | hire additional scientific personnel to support our product development efforts;
| | - |  | --------------------------------------------------------------------------------



| |  |  | implement operational, financial and management systems; and
| | - |  | ------------------------------------------------------------



| |  |  | hire additional general and administrative personnel to operate as a public company.
| | - |  | ------------------------------------------------------------------------------------

We do not expect to
generate any future revenue from therapeutic product sales until we successfully complete development and obtain regulatory approval for one or more of our product candidates, which we expect will take a number of years. If we obtain
regulatory approval for any of our product candidates, we expect to incur significant commercialization expenses related to product sales, marketing, manufacturing and distribution. Accordingly, we will seek to fund our operations through
public or private equity or debt financings or other sources. However, we may be unable to raise additional funds or enter into such other arrangements when needed on favorable terms or at all. Our failure to raise capital or enter
into such other arrangements when needed would have a negative impact on our financial condition and ability to develop our product candidates.

Financial Operations Overview

We conduct operations in
two geographic regions: Histogenics Corporation, a Delaware corporation, at our facility in Waltham, Massachusetts, and ProChon Biotech Ltd. (ProChon) in Tel Aviv, Israel. We own 100% of the voting shares of ProChon. As the nature of the
products, customers and methods to distribute products are the same and the nature of the regulatory environment, the production processes and historical and estimated future margins are similar, the two operations have been aggregated into one
reporting segment.

On May 13, 2011, we acquired ProChon, a privately held biotechnology company focused on modulating the fibroblast growth factor
system to enable it to create more effective solutions for tissue regeneration. Prior to the acquisition, ProChon was conducting a Phase 2 clinical trial in the United States and commercializing its lead product candidate, the BioCart cartilage
regeneration system, in Israel. ProChons products combined cell regeneration technologies with proprietary growth factors and biocompatible scaffolds to restore injured or chronically damaged tissues to normal. The acquisition of ProChon
provided us with access to a portfolio of intellectual property, including proprietary cell growth factors, in addition to furthering opportunities for the use of biomaterials to create more effective solutions for regenerating human tissue.

The ProChon acquisition was accounted for as a business combination. The results of operations of ProChon have been included in our consolidated statements of
operations since May 13, 2011, the date we obtained control of ProChon. Following the completion of the acquisition, ProChon became our wholly owned subsidiary and was integrated into our operations.

Unless otherwise indicated, the following information is presented on a consolidated basis to include our accounts and those of ProChon subsequent to the May
2011 acquisition. All intercompany transactions and balances are eliminated in consolidation.

Revenue

We generated collaboration revenue exclusively from a license agreement with AT Grade S.R.L. (AT Grade) for distribution of BioCart in Italy. The agreement
included a combination of diligence milestone payments, minimum royalty payments and royalties for commercial activity in Italy. We determined with AT Grade that the



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licensing agreement was no longer part of our strategic programs. The license agreement was formally terminated in March 2012. We continued to generate collaboration revenue from this license
agreement through the date of termination and as part of the separation agreement, we recorded $8,000 of collaboration revenue for the year ended December 31, 2013.

Research and Development Expenses

Research and
development expenses consist of development costs associated with our regenerative medicine platform and development programs. These costs are expensed as incurred and include:



| |  |  | compensation and employee-related costs;
| | - |  | ----------------------------------------



| |  |  | costs associated with conducting our preclinical, clinical and regulatory activities, including fees paid to third-party professional consultants and service providers;
| | - |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | costs incurred under clinical trial agreements with investigative sites;
| | - |  | ------------------------------------------------------------------------



| |  |  | costs for laboratory supplies and laboratory equipment;
| | - |  | -------------------------------------------------------



| |  |  | costs to acquire, develop and manufacture preclinical study and clinical trial materials;
| | - |  | -----------------------------------------------------------------------------------------



| |  |  | charges associated with the achievement of certain preclinical and financial milestones pursuant to our licenses for our bioadhesive, and our tissue engineering processor; and
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | facilities, depreciation and other expenses including allocated expenses for rent and maintenance of facilities.
| | - |  | ----------------------------------------------------------------------------------------------------------------

For the years ended December 31, 2014 and 2013, we incurred $25.9 million and $11.9 million, respectively, in research and development expenses. In 2014,
we incurred a $10.0 million up-front technology access fee as part of our exclusive channel collaboration agreement with Intrexon Corporation (Intrexon). We plan to increase our current level of research and development expenses for the foreseeable
future as we continue the development of our regenerative medicine platform and our initial therapeutic product candidates. Our current planned research and development activities include the following:



| |  |  | advancing NeoCart in a Phase 3 clinical superiority trial to microfracture;
| | - |  | ---------------------------------------------------------------------------



| |  |  | continued development work with Intrexon per the terms of the exclusive collaboration agreement;
| | - |  | ------------------------------------------------------------------------------------------------



| |  |  | leveraging our regenerative medicine platform to expand into additional therapeutic applications; and
| | - |  | -----------------------------------------------------------------------------------------------------



| |  |  | expanding and protecting our intellectual property platform.
| | - |  | ------------------------------------------------------------

We cannot determine with certainty the timing
and costs of initiation, the duration and the completion of current or future preclinical studies and clinical trials of our product candidates. At this time, due to the inherently unpredictable nature of preclinical and clinical development and
given the early stage of our product candidates, we are unable to estimate with any certainty the costs we will incur and the timelines we will require in the continued development of our product candidates, including NeoCart. Clinical and
preclinical development timelines, the probability of success and related development costs can differ materially from expectations. In addition, we cannot forecast which product candidates may be subject to future collaborations, when such
arrangements will be secured, if at all, and to what degree such arrangements would affect our development plans and capital requirements.

We do not
track research and development expenses by product. We do not allocate general equipment and supply costs, facilities, depreciation and other miscellaneous expenses to specific products as these expenses are deployed across all of our products.



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General and Administrative Expenses

For the years ended December 31, 2014 and 2013, we incurred $6.7 million and $4.8 million, respectively, in general and administrative expenses. General
and administrative expenses consist primarily of salaries and employee-related costs, including stock-based compensation and travel expenses for our employees in executive, finance and human resource functions. Other general and administrative
expenses include facility-related costs and professional fees for directors, accounting and legal services, and expenses associated with obtaining and maintaining patents.

We anticipate that our general and administrative expenses will increase in the future as we increase our headcount to support our continued research and
development and potential commercialization of our product development programs. We also anticipate increased expenses related to audit, legal, regulatory and tax-related services associated with maintaining compliance with exchange listing and SEC
requirements, director and officer insurance premiums, and investor relations costs associated with being a public company.

Total Other Income
(Expense), Net

Total other income (expense), net consists primarily of interest income earned on cash and cash equivalents; interest expense on
convertible promissory notes and on prior commercial bank debt; and changes in liabilities that are held at fair value.

Critical Accounting Policies
and Significant Judgments and Estimates

Our managements discussion and analysis of our consolidated financial condition and results of
operations are based on our consolidated financial statements, which have been prepared in accordance with U.S. generally accepted accounting principles. The preparation of these consolidated financial statements requires us to make estimates and
judgments that affect the reported amounts of assets, liabilities, revenue and expenses and the disclosure of contingent assets and liabilities in our consolidated financial statements. On an ongoing basis, we evaluate our estimates and judgments,
including those related to accrued expenses and stock-based compensation. We base our estimates on historical experience, known trends and events, and various other factors that are believed to be reasonable under the circumstances, the results of
which form the basis for making judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. Actual results may differ from these estimates under different assumptions or conditions.

While our significant accounting policies are described in more detail in the notes to our consolidated financial statements appearing elsewhere in this
annual report, we believe the following accounting policies to be most critical to the significant judgments and estimates used in the preparation of our consolidated financial statements.

Income Taxes

We utilize the asset and liability
method of accounting for income taxes. Under this method, deferred tax assets and liabilities are determined based on the difference between the financial statement carrying amounts and tax basis of assets and liabilities using enacted tax rates in
effect for years in which temporary differences are expected to reverse. We provide a valuation allowance when it is more likely than not that deferred tax assets will not be realized. We recognize the benefit of an uncertain tax position that has
been taken or we expect to take on income tax returns if such tax position is more likely than not to be sustained.

We follow the authoritative guidance
regarding accounting for uncertainty in income taxes, which prescribes a recognition threshold and measurement attribute for the financial statement recognition and measurement of a tax position taken or expected to be taken in a tax return. These
unrecognized tax benefits relate primarily to issues



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related to the timing of certain income and deductions for federal income tax purposes. We apply a variety of methodologies in making these estimates which include advice and studies performed by
independent subject matter experts, evaluation of public actions taken by the U.S. Internal Revenue Service and other taxing authorities, as well as our own industry experience. We provide estimates for unrecognized tax benefits which may be subject
to material adjustments until matters are resolved with taxing authorities or statutes expire. If our estimates are not representative of actual outcomes, our results of operations could be materially impacted.

We continue to maintain a valuation allowance against our deferred tax assets due to our assessment that their realization is not certain. We periodically
evaluate the likelihood of the realization of deferred tax assets and reduce the carrying amounts of these deferred tax assets by a valuation allowance to the extent we believe a portion will not be realized. We consider many factors when assessing
the likelihood of future realization of deferred tax assets, including our recent cumulative earnings experience by taxing jurisdiction, expectations of future taxable income, carryforward periods available to us for tax reporting purposes, various
income tax strategies and other relevant factors. Significant judgment is required in making this assessment and, to the extent future expectations change, we would assess the recoverability of our deferred tax assets at that time. If we determine
that the deferred tax assets become realizable in a future period, we would record material adjustments to income tax expense that period.

Uncertain Income Tax Positions

We record
uncertain tax positions on the basis of a two-step process whereby (1) we determine whether it is more likely than not that the tax positions will be sustained on the basis of the technical merits of the positions and (2) for those tax
positions that meet the more-likely-than-not recognition threshold, we recognize the largest amount of tax benefit that is more than 50% likely to be realized upon ultimate settlement with the related tax authority. We recognize interest and
penalties related to unrecognized tax benefits within income tax expense. Any accrued interest and penalties are included within the related tax liability. A reconciliation of the total pre-tax beginning and ending amounts of uncertain tax positions
is as follows:



|                                                        |  |                |         |  
|------------------------------------------------------- |  | -------------- | ------- | -
|                                                        |  | Tax Positions  |        
|                                                        |  | (in thousands) |        
|Balance at December 31, 2012                            |  | $              | (13,280 | )
|Reductions based on tax positions related to the period |  |                | 11,051  |  
|                                                        |  |                |         |  
|Balance at December 31, 2013                            |  |                | (2,229  | )
|Reductions based on tax positions related to the period |  |                | 296     |  
|                                                        |  |                |         |  
|Balance at December 31, 2014                            |  | $              | (1,933  | )
|                                                        |  |                |         |  

The uncertain tax positions giving rise to the unrecognized tax benefits of $811,000 at December 31, 2014 relate to the
timing of certain income and deductions for federal income tax purposes. The reversal of unrecognized tax benefits would not have any impact on the effective tax rate in future periods and are not expected to create cash tax liability upon
settlement due to our ability to utilize both pre-change and post-change NOLs to offset their impact

Accrued Expenses

As part of the process of preparing our consolidated financial statements, we are required to estimate our accrued expenses. This process involves reviewing
open contracts and purchase orders, communicating with our personnel to identify services that have been performed on our behalf and estimating the level of service performed and the associated cost incurred for the service when we have not yet been
invoiced or otherwise notified of the actual cost. The majority of our service providers invoice us monthly in arrears for services performed or when contractual milestones are met. We make estimates of our accrued expenses as of each balance sheet
date in our consolidated financial statements based on facts and circumstances known to us at that



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time. We periodically confirm the accuracy of our estimates with the service providers and make adjustments if necessary. Examples of estimated accrued research and development expenses include
fees payable to:



| |  |  | clinical research organizations and investigative sites in connection with clinical trials;
| | - |  | -------------------------------------------------------------------------------------------



| |  |  | vendors in connection with preclinical development activities;
| | - |  | --------------------------------------------------------------



| |  |  | vendors related to product manufacturing, development, and distribution of clinical materials; and
| | - |  | --------------------------------------------------------------------------------------------------



| |  |  | professional service fees for consulting and related services.
| | - |  | --------------------------------------------------------------

We base our expense accruals related to
clinical trials on our estimates of the services received and efforts expended pursuant to our contract arrangements. The financial terms of these agreements are subject to negotiation, vary from contract to contract and may result in uneven payment
flows and expense recognition. Payments under some of these contracts depend on factors such as the successful enrollment of patients and the completion of clinical trial milestones. In accruing service fees, we estimate the time period over which
services will be performed and the level of effort to be expended in each period. If the actual timing of the performance of services or the level of effort varies from our estimate, we adjust the accrual or prepaid accordingly. Our understanding of
the status and timing of services performed relative to the actual status and timing of services performed may vary and may result in our reporting changes in estimates in any particular period.

Although we do not expect our estimates to be materially different from amounts actually incurred, if our estimates of the status and timing of services
performed differs from the actual status and timing of services performed, we may report amounts that are too high or too low in any particular period. To date, there have been no material differences from our estimates to the amount actually
incurred.

Impairment of Long-Lived Assets

Long-lived assets consist primarily of property and equipment. We test long-lived assets for impairment at year end or whenever events or circumstances present
an indication of impairment. If the sum of expected future cash flows (undiscounted and without interest charges) of the long-lived assets is less than the carrying amount of such assets, an impairment loss would be recognized in earnings. The
long-lived asset would be written down to the estimated fair value, calculated based on the present value of expected future cash flows. While our current and historical operating losses and negative cash flows are indicators of impairment, we
believe that future cash flows to be received support the carrying value of our long-lived assets.

Impairment of Intangible Assets

We test intangible assets for impairment at year end or whenever events or circumstances present an indication of impairment. If the sum of expected future
cash flows (undiscounted and without interest charges) of the intangible assets is less than the carrying amount of such assets, an impairment loss would be recognized in earnings in impairment of goodwill and intangible assets. The
intangible assets would be written down to the estimated fair value, calculated based on the present value of expected future cash flows. Our intangible assets consist of in-process research and development (IPR&D) obtained through the
acquisition of ProChon and the AT Grade license. Our current and historical operating losses and negative cash flows are indicators of impairment. In addition, the results of our annual impairment test as of December 31, 2014 and 2013 indicated
a decline in the fair market value of the IPR&D, resulting in an impairment charge of $60,000 each year. We also note that as our core focus has been on and will continue to be on the development of NeoCart, there is a risk of further impairment
in the near future.

Impairment of Goodwill

Goodwill represents the difference between the purchase price and the fair value of the net assets acquired under the acquisition method of accounting for
business combinations. Goodwill is not amortized but is evaluated for impairment within each reporting unit on an annual basis at year end each year for impairment, or if indicators are present or changes in circumstances suggest that impairment may
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Stock-Based Compensation

We account for grants of stock options and restricted stock based on their grant date fair value and recognize compensation expense over their vesting period.
We estimate the fair value of stock options as of the date of grant using the Black-Scholes option pricing model and, if issued, restricted stock based on the fair value of the underlying common stock as determined by management or the value of the
services provided, whichever is more readily determinable.

Stock-based compensation expense represents the cost of the grant date fair value of employee
stock option grants recognized over the requisite service period of the awards (usually the vesting period) on a straight-line basis, net of estimated forfeitures. The expense is adjusted for actual forfeitures at year end. Stock-based compensation
expense recognized in the financial statements is based on awards that are ultimately expected to vest.

The Black-Scholes option pricing model requires
us to make certain assumptions and estimates concerning our stock price volatility, the rate of return of risk-free investments, the expected term of the awards, and our anticipated dividends. We utilize the volatility from an analysis of peer group
companies used in the Black-Scholes model, as we do not believe we have sufficient historical data to support this assumption.

We account for stock
options and restricted stock awards to non-employees using the fair value approach. Stock options and restricted stock awards granted to non-employees are subject to periodic revaluation over their vesting terms.

Other Company Information

JOBS Act

On April 5, 2012, the Jumpstart Our Business Startups Act (JOBS Act) was enacted. Section 107 of the JOBS Act permits an emerging growth
company to delay the adoption of new or revised accounting standards until those standards would otherwise apply to private companies. We plan to avail ourselves of this exemption from new or revised accounting standards and, therefore, we may
not be subject to the same new or revised accounting standards as other public companies that are not emerging growth companies.

For so long as we are an
emerging growth company, we intend to rely on exemptions relating to: (1) providing an auditors attestation report on our system of internal control over financial reporting pursuant to Section 404(b) of the
Sarbanes-Oxley Act and (2) complying with any requirement that may be adopted by the Public Company Accounting Oversight Board regarding mandatory audit firm rotation or a supplement to the auditors report providing additional information
about the audit and the financial statements, known as the auditor discussion and analysis. We will remain an emerging growth company until the earliest of (a) the last day of the fiscal year in which we have total annual gross revenue of $1.0
billion or more, (b) December 31, 2019, the last day of our fiscal year following the fifth anniversary of the date of the completion of our initial public offering, (c) the date on which we have issued more than $1.0 billion in
non-convertible debt during the previous three years and (d) the date on which we are deemed to be a large accelerated filer under the rules of the SEC.

Net Operating Loss Carryforwards

Utilization of
the net operating loss (NOL) and research and development credit carryforwards may be subject to a substantial annual limitation due to ownership change limitations that have occurred or that could occur in the future, as required by
Section 382 and 383 of the Internal Revenue Code (Code), as well as similar state and foreign provisions. These ownership changes may limit the amount of NOL and research and development credit carryforwards that can be utilized annually to
offset future taxable income and tax, respectively. In general, an ownership change as defined by Section 382 of the Code results from a transaction or series of transactions



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over a three-year period resulting in an ownership change of more than 50% of the outstanding stock of a company by certain stockholders. We have completed a study to assess whether an ownership
change has occurred or whether there have been multiple ownership changes since our formation. The results of this study indicated we experienced ownership changes, as defined by Section 382 of the Code, in each of 2006, 2011, 2012 and 2013. We
have not recorded NOLs that as a result of these restrictions will expire unused. Accordingly, we have recorded NOL carryforwards net of these limitations, which are $3.9 million, $30.5 million, $36.7 million, $49.7 million and $47.2 million,
in 2010, 2011, 2012, 2013 and 2014, respectively.

At December 31, 2014, we had U.S. federal and Israeli NOL carryforwards of $31.2 million and $25.2
million, respectively, which may be available to offset future taxable income. The U.S. federal NOL carryforwards begin to expire in 2034 and the Israeli NOL carryforward does not expire.

As of December 31, 2014, we have provided a full valuation allowance for deferred tax assets.

Recently Adopted Accounting Pronouncements

In June 2014,
the Financial Accounting Standards Board (FASB) issued guidance that eliminates the concept of a development stage entity in its entirety from GAAP. The guidance is intended to reduce the overall cost and complexity associated with financial
reporting for development stage entities without reducing the availability of relevant information. The FASB also believes the changes will simplify the consolidation accounting guidance by removing the differential accounting requirements for
development stage entities. As a result of these changes, there no longer will be any accounting or reporting differences in GAAP between development stage entities and other operating entities. The amendments are effective for annual reporting
periods beginning after December 15, 2014. Early application is permitted for any annual reporting period or interim period for which the entitys financial statements have not yet been issued (public business entities) or made available
for issuance (other entities). The adoption of this guidance as of December 31, 2014 eliminated the disclosure of inception to date information from our consolidated financial statements.

In July 2013, the FASB issued guidance that eliminates diversity in practice surrounding the presentation of unrecognized tax benefits when an NOL
carryforward, a similar tax loss, or a tax credit carryforward exists. An entity is required to net an unrecognized tax benefit with a deferred tax asset for an NOL carryforward, a similar tax loss, or a tax credit carryforward if the carryforward
would be used to settle additional tax due upon disallowance of a tax position. The adoption of this guidance on January 1, 2014 did not have a material impact on our consolidated financial statements.

Recently Issued Accounting Pronouncements

In November
2014, the FASB issued guidance that allows all acquired entities to choose to apply pushdown accounting in their separate financial statements when an acquirer obtains control of them. This guidance is effective immediately. We do not expect that
the application of this guidance will have an impact on the presentation of our results of operations, financial position or disclosures.

In November
2014, the FASB issued guidance to eliminate the existing diversity in practice in accounting for hybrid financial instruments issued in the form of a share. A hybrid financial instrument consists of a host contract into which one or more
derivative terms have been embedded. This guidance requires an entity to consider the terms and features of the entire financial instrument, including the embedded derivative features, in order to determine whether the nature of the host contract is
more akin to debt or to equity. This guidance is effective for fiscal years and interim periods beginning after December 15, 2015, with early adoption permitted. A reporting entity should apply this guidance using a modified retrospective
approach by recording a cumulative-effect adjustment to equity as of the beginning of the annual period of adoption. Retrospective application is permitted to all relevant prior periods. We do not expect that the application of this guidance will
have an impact on the presentation of our results of operations, financial position or disclosures.



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In August 2014, the FASB issued guidance on disclosure of uncertainties about an entitys ability to
continue as a going concern. This guidance addresses managements responsibility in evaluating whether there is substantial doubt about a companys ability to continue as a going concern and to provide related footnote disclosures. The
guidance is effective for fiscal years beginning after December 15, 2016 and for interim periods within those fiscal years, with early adoption permitted. We do not expect to adopt this guidance prior to the required date and believe the
adoption of this guidance will not have material impact on our consolidated financial statements.

In June 2014, the FASB issued guidance requiring when
there is a performance target that affects vesting and could be achieved after the requisite service period to be treated as a performance condition. A reporting entity should apply existing guidance on stock-based compensation, as it relates to
such awards. This guidance is effective for annual periods and interim periods within those annual periods beginning after December 15, 2015 with early adoption permitted using either of two methods: (i) prospective to all awards granted
or modified after the effective date; or (ii) retrospective to all awards with performance targets that are outstanding as of the beginning of the earliest annual period presented in the financial statements and to all new or modified awards
thereafter, with the cumulative effect of applying this guidance as an adjustment to the opening retained earnings balance as of the beginning of the earliest annual period presented in the financial statements. We have not issued any
performance-based or awards with market conditions through December 31, 2014. Our adoption of this guidance is not expected to have a material impact on our consolidated financial statements.

In May 2014, the FASB issued guidance that affect any entity that either enters into contracts with customers to transfer goods or services or enters into
contracts for the transfer of nonfinancial assets unless those contracts are within the scope of other standards (e.g., insurance contracts or lease contracts). The core principle of the guidance is that an entity should recognize revenue to depict
the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The amendments are effective for annual reporting periods
beginning after December 15, 2016, including interim periods within that reporting period. Early application is not permitted. We have not had any revenue from contracts with customers through December 31, 2014. Our adoption of this
guidance is not expected to have a material impact on our consolidated financial statements.

Results of Operations

Years Ended December 31, 2014 and 2013

The
following table summarizes the results of our operations for the years ended December 31, 2014 and 2013:



|                                             |  |                          |        |  |      |   |        |  
|-------------------------------------------- |  | ------------------------ | ------ |  | ---- | - | ------ | -
|                                             |  | Years ended December 31, |       
|                                             |  | 2014                     |        |  | 2013 |  
|                                             |  | (in thousands)           |       
|Collaboration revenue                        |  | $                        |       |  |      | $ | 8      |  
|Research and development expenses            |  |                          | 25,856 |  |      |   | 11,946 |  
|General and administrative expenses          |  |                          | 6,746  |  |      |   | 4,847  |  
|Impairment of goodwill and intangible assets |  |                          | 60     |  |      |   | 60     |  
|Other income (expense), net                  |  |                          | 9,869  |  |      |   | (8,867 | )

Revenue.Revenue was $0 for the year ended December 31, 2014, compared to $8,000 for the year ended
December 31, 2013. The decrease of $8,000 was due to the termination of a collaboration agreement with AT Grade in 2012. We do not expect any future revenue until we have successfully completed the development of NeoCart or future
product candidates.

Research and Development Expenses.Research and development expenses were $25.9 million for the year ended
December 31, 2014 as compared to $11.9 million for the year ended December 31, 2013. The increase in research and development expenses is primarily due to a $10.0 million up-front technology access fee in the form of a non-cash convertible
promissory note issued to Intrexon as part of the ECC, and the remainder of the increase primarily relates to the incremental costs of enrolling patients in the NeoCart Phase 3 clinical trial which resumed in December 2013.



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General and Administrative Expenses.General and administrative expenses were $6.7 million for the
year ended December 31, 2014 as compared to $4.8 million for the year ended December 31, 2013. The increase in spending of $1.9 million was the result, in part, of the hiring of our Chief Executive Officer and other personnel to
support our operations, and other costs associated with the resumption of the NeoCart Phase 3 clinical trial in December 2013. The increase in general and administrative expenses included $465,000 increase in employee compensation-related expenses,
an increase of $573,000 in professional service provider fees to support our initial public offering and audit of the consolidated financial statements and a $405,000 increase in clinical marketing expenses to support patient and site awareness of
the NeoCart Phase 3 clinical trial. We expect general and administrative expenses to increase in 2015 as the NeoCart Phase 3 clinical trial continues and as we increase our administrative structure to support our obligations as a public company.

Impairment of Intangible Assets.Impairment of intangible assets was $60,000 for both of the years ended December 31, 2014 and 2013.
Impairment of IPR&D was identified during our annual impairment testing for the years ended December 31, 2014 and 2013. The underlying IPR&D is a defensive asset to our core product NeoCart, which we are continuing to focus our efforts.
As the projected cashflows of this defensive asset will be less valuable as NeoCart continues its development, we recorded the necessary reduction in the value IPR&D.

Other Income (Expense), Net. Other income (expense), net was $9.9 million for the year ended December 31, 2014, compared to $(8.9) million
for the year ended December 31, 2013. The $18.7 million change from other (expense) to other income was primarily due to the periodic fair value adjustments of warrant liability, Other Liability and net sales distribution payment liability
which was a gain of $10.0 million for the year ended December 31, 2014, compared to a loss of $8.8 million for the year ended December 31, 2013. Partially offsetting the change from expense to income is interest expense of approximately
$100,000 incurred for the year ended December 31, 2014 related to convertible debt instruments issued in 2014 that were converted into common stock upon the consummation of our initial public offering as well as the equipment term loan.

Liquidity and Capital Resources

We have incurred losses
and negative cash flows from operations through December 31, 2014. Through December 31, 2014, we had an accumulated deficit of $133.5 million and anticipate that we will continue to incur net losses for the next several years.

Through December 31, 2014, we have funded our consolidated operations primarily through the proceeds of our initial public offering, private placement of
preferred stock and convertible notes and commercial bank debt. As of December 31, 2014, we had cash and cash equivalents of $58.1 million.

We
believe that the net proceeds from our initial public offering and our existing cash and cash equivalents will be sufficient to fund our projected cash needs through the middle of 2017. We will require additional capital for the further development
of our existing product candidates and may also need to raise additional funds sooner to pursue other development activities related to additional product candidates. On December 18, 2013, we issued 955,568 shares of our Series A-1 Preferred
Stock for net proceeds of $10.3 million in cash. On May 27, 2014, we issued 955,565 shares of our Series A-1 Preferred Stock for net proceeds of $10.3 million in cash. On December 3, 2014 we completed our initial public offering whereby we
sold 5,909,091 shares of our common stock for net proceeds of $56.5 million in cash.

The following table sets forth a summary of the net cash flow
activity for each of the periods indicated:



|                                                     |  |                          |         |   |      |   |         |  
|---------------------------------------------------- |  | ------------------------ | ------- | - | ---- | - | ------- | -
|                                                     |  | Years ended December 31, |        
|                                                     |  | 2014                     |         |   | 2013 |  
|                                                     |  | (in thousands)           |        
|Net cash used in operating activities                |  | $                        | (18,405 | ) |      | $ | (15,282 | )
|Net cash used in investing activities                |  |                          | (3,321  | ) |      |   | (554    | )
|Net cash provided by financing activities            |  |                          | 71,052  |   |      |   | 9,854   |  
|                                                     |  |                          |         |   |      |   |         |  
|Net increase (decrease) in cash and cash equivalents |  | $                        | 49,326  |   |      | $ | (5,982  | )
|                                                     |  |                          |         |   |      |   |         |  



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In 2014, we incurred a $10.0 million up-front technology access fee in the form of a non-cash convertible
promissory note to Intrexon as part of the ECC. The convertible promissory note accrued interest at a rate of 6% per annum. The convertible promissory note and accrued interest converted into 918,206 shares of our common stock in connection
with our initial public offering.

Operating Activities

Cash used in operating activities increased $3.1 million to $18.4 million for the year ended December 31, 2014 from $15.3 million for the year ended
December 31, 2013. During the year ended December 31, 2014, the net cash used for operating activities of $18.4 million consisted primarily of our net loss of $22.8 million adjusted for non-cash items including the change in fair value of
warrants, the other liability and net sales distribution payment liability of $10.0 million partially offset by a $10.1 million non-cash up front fee for the note payable to Intrexon, including interest, a $2.4 million increase in operating assets
and liabilities, a $547,000 increase in stock-based compensation, a $541,000 increase in deferred rent and lease incentive, a $726,000 increase in depreciation and a $60,000 increase in the impairment of intangible assets. During the year ended
December 31, 2013, the net cash used for operating activities of $15.3 million consisted primarily of our net loss of $25.7 million adjusted for non-cash items including an offset of $8.8 million related to the change in fair value of warrants,
other liability and net sales distribution payment liability, a $1.3 million increase in operating assets and liabilities, a $158,000 increase in stock-based compensation and a $60,000 increase in the impairment of intangible assets. The $3.1
million increase in net cash used in operating activities as compared to the prior year is primarily due to the non-cash items related to the ECC entered into with Intrexon as well as the closing of our initial public offering in 2014 which did not
occur in 2013.

Investing Activities

Cash
used in investing activities increased $2.8 million to $3.3 million for the year ended December 31, 2014 from $554,000 for the year ended December 31, 2013. The difference was primarily related to increased purchases of property and
equipment.

Financing Activities

Cash
provided by financing activities increased $61.2 million to $71.1 million for the year ended December 31, 2014 from $9.9 million for the year ended December 31, 2013. During the year ended December 31, 2014, we sold 955,565 shares of
our Series A-1 Preferred Stock for an aggregate purchase price of $10.3 million to existing investors, received $1.0 million in proceeds from bridge financing, proceeds of $1.8 million from borrowings under our equipment term loan and completed our
initial public offering for net proceeds of $60.5 million, net of the underwriters fee. These proceeds were partially offset by costs associated with our initial public offering of $2.5 million. During the year ended December 31, 2013, we
amended the terms of the Series A Preferred stock financing and sold 955,568 shares of our Series A-1 Preferred Stock for an aggregate purchase price of $10.3 million to existing investors, which is partially offset by costs associated with our
initial public offering of $409,000.

Operating Capital Requirements

Historically, we have generated minimal product revenue from therapeutic product sales of BioCart in Israel. In 2011, we suspended sales of BioCart in
the Israeli market for strategic reasons. We do not know when, or if, we will generate any future revenue from therapeutic product sales. We do not expect to generate significant revenue from therapeutic product sales unless and until we obtain
regulatory approval of and commercialize NeoCart or our future product candidates. We anticipate that we will continue to incur losses for the next several years, and we expect the losses to increase as we continue the development of, and seek
regulatory approvals for, NeoCart and our future product candidates, and begin to commercialize any approved products. We are subject to all risks incident to the development of new therapeutic products, and we may encounter unforeseen expenses,



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difficulties, complications, delays and other unknown factors that may adversely affect our business. We have incurred additional costs associated with operating as a public company. We
anticipate that we will need substantial additional funding in connection with our continuing operations.

Until we can generate a sufficient amount of
revenue from our regenerative medicine products, if ever, we expect to finance future cash needs through public or private equity or debt offerings. In any event, we do not expect to achieve significant revenue from regenerative medicine product
sales prior to the use of the net proceeds from our initial public offering. Additional capital may not be available on reasonable terms, if at all. If we are unable to raise additional capital in sufficient amounts or on terms acceptable to us, we
may have to significantly delay, scale back or discontinue the development or commercialization of one or more of our product candidates. If we raise additional funds through the issuance of additional debt or equity securities, it could result in
dilution to our existing stockholders, increased fixed payment obligations and the existence of securities with rights that may be senior to those of our common stock. If we incur indebtedness, we could become subject to covenants that would
restrict our operations and potentially impair our competitiveness, such as limitations on our ability to incur additional debt, limitations on our ability to acquire, sell or license intellectual property rights and other operating restrictions
that could adversely impact our ability to conduct our business. Any of these events could significantly harm our business, financial condition and prospects.

Our forecast of the period of time through which our financial resources will be adequate to support our operations is a forward-looking statement and
involves risks and uncertainties, and actual results could vary as a result of a number of factors. We have based this estimate on assumptions that may prove to be wrong, and we could utilize our available capital resources sooner than we
currently expect. The amount and timing of future funding requirements, both near- and long-term, will depend on many factors, including:



| |  |  | the design, initiation, progress, size, timing, costs and results of preclinical studies and clinical trials for our product candidates;
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------



| |  |  | the outcome, timing and cost of regulatory approvals by the U.S. Food and Drug Administration (FDA) and comparable foreign regulatory authorities, including the potential for the FDA or comparable foreign regulatory
authorities to require that we perform more studies than, or evaluate clinical endpoints other than those that we currently expect;
| | - |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | the timing and costs associated with our technology transfer and manufacturing location transition;
| | - |  | ---------------------------------------------------------------------------------------------------



| |  |  | the timing and costs associated with manufacturing NeoCart and our future product candidates for clinical trials, preclinical studies and, if approved, for commercial sale;
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | the number and characteristics of product candidates that we pursue;
| | - |  | --------------------------------------------------------------------



| |  |  | the extent to which we are required to pay milestone or other payments under our in-license agreements and the timing of such payments;
| | - |  | ---------------------------------------------------------------------------------------------------------------------------------------



| |  |  | the cost of filing, prosecuting, defending and enforcing any patent claims and other intellectual property rights;
| | - |  | ------------------------------------------------------------------------------------------------------------------



| |  |  | our need to expand our research and development activities, including our need and ability to hire additional employees;
| | - |  | ------------------------------------------------------------------------------------------------------------------------



| |  |  | our need to implement additional infrastructure and internal systems and hire additional employees to operate as a public company;
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------



| |  |  | the effect of competing technological and market developments; and
| | - |  | ------------------------------------------------------------------



| |  |  | the cost of establishing sales, marketing and distribution capabilities for any products for which we may receive regulatory approval.
| | - |  | --------------------------------------------------------------------------------------------------------------------------------------

If we cannot expand our operations or otherwise capitalize on our business opportunities because we lack sufficient capital, our business, financial condition
and results of operations could be materially adversely affected.



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Loan and Security Agreements

Equipment Loan

In July 2014, we entered into a
loan and security agreement with Silicon Valley Bank, which provides for a line of credit to finance certain equipment purchases up to an aggregate of $1.75 million through March 31, 2015. Any amounts drawn under the equipment line of credit
will be amortized and payable in 36 monthly installments of principal and interest commencing six months following the date of the draw with an annual interest rate of 2.75% plus the greater of 3.25% and the prime rate in effect at the time of each
draw, as published in the Wall Street Journal. The outstanding balance on the line of credit is secured by a first priority lien over all equipment purchased using the line of credit.

In accordance with the terms of the equipment line of credit, we issued a warrant to Silicon Valley Bank in July 2014 to purchase 6,566 shares of our common
stock at an exercise price per share of $7.99.

The equipment line of credit includes customary operating but non-financial covenants, including
limitations on our ability to incur additional indebtedness, issue dividends, sell assets, engage in any business other than our current business, merge or consolidate with other entities, create liens on our assets, make investments, repurchase our
stock in certain instances, enter into transactions with affiliates, make payments on subordinated indebtedness and transfer or encumber any collateral securing the debt. As of December 31, 2014, $1.75 million of borrowings were outstanding
under the line of credit and we were in compliance with all required covenants.

Off-Balance Sheet Arrangements

We did not have any off-balance sheet arrangements during the periods presented, and we do not currently have, any off-balance sheet arrangements, as defined
in the rules and regulations of the SEC.



|ITEM 7A. | QUALITATIVE AND QUANTITATIVE DISCLOSURES ABOUT MARKET RISK
|-------- | ----------------------------------------------------------

Not
applicable.



|ITEM 8. | FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA
|------- | -------------------------------------------

The consolidated financial statements and
related consolidated financial statement schedules required to be filed are indexed on page 99 and are incorporated herein.



|ITEM 9. | CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND FINANCIAL DISCLOSURE
|------- | ------------------------------------------------------------------------------------

Not applicable.



|ITEM 9A. | CONTROLS AND PROCEDURES
|-------- | -----------------------

Conclusion Regarding the Effectiveness of Disclosure Controls
and Procedures

Our management, with the participation of our Chief Executive Officer and our Chief Financial Officer, evaluated the effectiveness of
our disclosure controls and procedures as of December 31, 2014. The term disclosure controls and procedures, as defined in Rules 13a-15(e) and 15d-15(e) under the Exchange Act, means controls and other procedures of a company that
are designed to ensure that information required to be disclosed by a company in the reports that it files or submits under the Exchange Act is recorded, processed, summarized and reported, within the time periods specified in the SECs rules
and forms. Disclosure controls and procedures include, without limitation, controls and procedures designed to ensure that information required to be disclosed by a company in the reports that it files or submits under the Exchange Act is
accumulated and



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communicated to the companys management, including its principal executive and principal financial officers, as appropriate to allow timely decisions regarding required disclosure.
Management recognizes that any controls and procedures, no matter how well designed and operated, can provide only reasonable assurance of achieving their objectives and management necessarily applies its judgment in evaluating the cost-benefit
relationship of possible controls and procedures. Based on the evaluation of our disclosure controls and procedures as of December 31, 2014, our Chief Executive Officer and Chief Financial Officer concluded that, as of such date, our disclosure
controls and procedures were effective at the reasonable assurance level.

Managements Report on Internal Control over Financial Reporting

The SEC, as required by Section 404 of the Sarbanes-Oxley Act, adopted rules requiring companies that file reports with the SEC to include a
management report on such companys internal control over financial reporting in its annual report. In addition, our independent registered public accounting firm may be required to attest to our internal control over financial reporting. This
report on Form 10-K does not include a report of managements assessment regarding internal control over financial reporting or an attestation report of our independent registered public accounting firm due to a transition period
established by SEC rules applicable to newly public companies. Management will be required to provide an assessment of the effectiveness of our internal control over financial reporting as of December 31, 2015. We believe we will have adequate
resources and expertise, both internal and external, in place to meet this requirement. However, there is no guarantee that our efforts will result in managements ability to conclude, or, if required, our independent registered public
accounting firm to attest, that our internal control over financial reporting is effective as of December 31, 2015.

Changes in Internal Control
over Financial Reporting

There has been no change in our internal control over financial reporting (as defined in Rules 13a-15(f) and 15d-15(f) of the
Exchange Act) during the fourth quarter of 2014 that has materially affected, or is reasonably likely to materially affect, our internal control over financial reporting.

Limitations on the Effectiveness of Controls

Control
systems, no matter how well conceived and operated, are designed to provide a reasonable, but not an absolute, level of assurance that the objectives of the control system are met. Further, the design of a control system must reflect the fact that
there are resource constraints, and the benefits of controls must be considered relative to their costs. Because of the inherent limitations in all control systems, no evaluation of controls can provide absolute assurance that all control issues and
instances of fraud, if any, have been detected. Because of the inherent limitations in any control system, misstatements due to error or fraud may occur and not be detected.



|ITEM 9B. | OTHER INFORMATION
|-------- | -----------------

None.



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PART III



|ITEM 10. | DIRECTORS, EXECUTIVE OFFICERS AND CORPORATE GOVERNANCE
|-------- | ------------------------------------------------------

Information required under this
item will be contained in the Companys Proxy Statement for the Annual Meeting of Stockholders to be filed with the SEC within 120 days after the end of the fiscal year ended December 31, 2014, under the captions Election of
Directors, Executive Officers, Corporate Governance, and Section 16(a) Beneficial Ownership Reporting Compliance and is incorporated herein by reference pursuant to General Instruction G(3) to Form 10-K.



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|ITEM 11. | EXECUTIVE COMPENSATION
|-------- | ----------------------

Information required under this item will be contained in the
Companys Proxy Statement for the Annual Meeting of Stockholders to be filed with the SEC within 120 days after the end of the fiscal year ended December 31, 2014, under the captions Corporate Governance and Executive
Compensation, and is incorporated herein by reference pursuant to General Instruction G(3) to Form 10-K, except that information required by Item 407(e)(5) of Regulation S-K will be deemed furnished in this Form 10-K and will not be
deemed incorporated by reference into any filing under the Securities Act of 1933 or the Securities Exchange Act of 1934, except to the extent that we specifically incorporate it by reference into such filing.



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|ITEM 12. | SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT AND RELATED STOCKHOLDER MATTERS
|-------- | ----------------------------------------------------------------------------------------------

Except for the information set forth below, the information required under this item will be contained in the Companys Proxy Statement for the Annual
Meeting of Stockholders to be filed with the SEC within 120 days after the end of the fiscal year ended December 31, 2014, under the caption Security Ownership by Certain Beneficial Owners and Management and is incorporated herein
by reference pursuant to General Instruction G(3) to Form 10-K.

Equity Compensation Plan Information

The following table provides information as of December 31, 2014, with respect to shares of our common stock that may be issued, subject to certain
vesting requirements, under our existing equity compensation plans, including our 2013 Equity Incentive Plan (2013 Plan), 2013 Employee Stock Purchase Plan (2013 ESPP) and our 2012 Equity Incentive Plan (2012 Plan).



|                                                           |  |                                                                                          |         |     |                                                                           |   |      |                                                                                                                                     |  |  |         |    
|---------------------------------------------------------- |  | ---------------------------------------------------------------------------------------- | ------- | --- | ------------------------------------------------------------------------- | - | ---- | ----------------------------------------------------------------------------------------------------------------------------------- |  |  | ------- | ---
|                                                           |  | A                                                                                        |         |     | B                                                                         |   |      | C                                                                                                                                   | 
|Plan Category                                              |  | Number of Securitiesto be Issued UponExercise
ofOutstanding Options,Warrants, and Rights |         |     | Weighted-AverageExercise Price
ofOutstanding Options,Warrants, and Rights |   |      | Number of SecuritiesRemaining Availablefor Future IssuanceUnder EquityCompensationPlans
(ExcludingSecurities Reflected inColumn (A) | 
|Equity compensation plans approved by security holders     |  |                                                                                          | 700,387 | (1) |                                                                           | $ | 6.19 |                                                                                                                                     |  |  | 637,794 | (2)
|Equity compensation plans not approved by security holders |  |                                                                                          |        |     |                                                                           |   |     |                                                                                                                                     |  |  |        |    
|                                                           |  |                                                                                          |         |     |                                                                           |   |      |                                                                                                                                     |  |  |         |    
|Total                                                      |  |                                                                                          | 700,387 |     |                                                                           | $ | 6.19 |                                                                                                                                     |  |  | 637,794 |    
|                                                           |  |                                                                                          |         |     |                                                                           |   |      |                                                                                                                                     |  |  |         |    



|(1) | Of these shares, none were subject to options then outstanding under the 2013 Plan, 537,683 were subject to options then outstanding under the 2012 Plan; and 162,704 were subject to outstanding warrants.
|--- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|(2) | Represents 534,129 shares of common stock available for issuance under our 2013 Plan and 103,665 shares of common stock available for issuance under our 2013 ESPP. No shares are available for future issuance under the
2012 Plan. Our 2013 Plan provides for annual increases in the number of shares available for issuance thereunder on the first day of each fiscal year equal to the least of: (1) 181,414 shares of our common stock; (2) 3.5% of the shares of
common stock outstanding at that time; and (3) such other amount as our board of directors may determine. On January 1, 2015, an additional 181,414 shares became available for future issuance under our 2013 Plan in accordance with the
annual increase. In addition, our 2013 ESPP provides for annual increases in the number of shares available for issuance thereunder on the first day of each fiscal year equal to the least of: (1) 51,832 shares of our common stock; (2) 1%
of the shares of common stock outstanding at that time; and (3) such other amount as our board of directors may determine. On January 1, 2015, an additional 51,832 shares became available for future issuance under our 2013 Plan in
accordance with the annual increase.
|--- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|ITEM 13. | CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS, AND DIRECTOR INDEPENDENCE
|-------- | -------------------------------------------------------------------------

Information
required under this item will be contained in the Companys Proxy Statement for the Annual Meeting of Stockholders to be filed with the SEC within 120 days after the end of the fiscal year ended December 31, 2014, under the captions
Corporate Governance and Certain Relationships and Related Persons Transactions and is incorporated herein by reference pursuant to General Instruction G(3) to Form 10-K.



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|ITEM 14. | PRINCIPAL ACCOUNTANT FEES AND SERVICES
|-------- | --------------------------------------

Information required under this item will be
contained in the Companys Proxy Statement for the Annual Meeting of Stockholders to be filed with the SEC within 120 days after the end of the fiscal year ended December 31, 2014, under the caption Ratification of Selection of
Independent Registered Public Accounting Firm and is incorporated herein by reference pursuant to General Instruction G(3) to Form 10-K.



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PART IV



|ITEM 15. | EXHIBITS AND FINANCIAL STATEMENTS SCHEDULES
|-------- | -------------------------------------------



|(a) | The following documents are filed as part of, or incorporated by reference into, this annual report on Form 10-K:
|--- | -----------------------------------------------------------------------------------------------------------------



| | 1. | Financial Statements. See Index to Consolidated Financial Statements under Item 8 of this annual report on Form 10-K.
| | -- | ---------------------------------------------------------------------------------------------------------------------



| | 2. | Financial Statement Schedules. All schedules have been omitted because the information required to be presented in them is not applicable or is shown in the consolidated financial statements or related notes.
| | -- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | 3. | Exhibits. We have filed, or incorporated into this annual report on Form 10-K by reference, the exhibits listed on the accompanying Exhibit Index immediately following the signature page of this annual report on
Form 10-K.
| | -- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



|(b) | Exhibits. See Item 15(a)(3) above.
|--- | ----------------------------------



|(c) | Financial Statement Schedules. See Item 15(a)(2) above.
|--- | -------------------------------------------------------



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Signatures

Pursuant to the requirements of Section 13 and 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this annual
report on Form 10-K to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of Waltham, Commonwealth of Massachusetts, on March 27, 2015.



HISTOGENICS CORPORATIONBy:

/s/ Adam GridleyAdam Gridley,
President and Chief Executive Officer


Pursuant to the requirements of the Securities Act of 1934, this annual report on Form 10-K has been
signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated.



|                                                        |  |                                                                              |  |               
|------------------------------------------------------- |  | ---------------------------------------------------------------------------- |  | --------------
|Signature                                               |  | Title                                                                        |  | Date          
|                                                        |  |                                                                             
|/s/ Adam Gridley
Adam Gridley                           |  | Chief Executive Officer, President and Director(Principal Executive Officer) |  | March 27, 2015
|                                                        |  |                                                                             
|/s/ Kevin McArdle
Kevin McArdle                         |  | Chief Financial Officer
(Principal Financial and Accounting Officer)         |  | March 27, 2015
|                                                        |  |                                                                             
|/s/ Garheng Kong, M.D., Ph.D.
Garheng Kong, M.D., Ph.D. |  | Chairman of the Board of Directors                                           |  | March 27, 2015
|                                                        |  |                                                                             
|/s/ Joshua Baltzell
Joshua Baltzell                     |  | Director                                                                     |  | March 27, 2015
|                                                        |  |                                                                             
|/s/ David Gill
David Gill                               |  | Director                                                                     |  | March 27, 2015
|                                                        |  |                                                                             
|/s/ John H. Johnson
John H. Johnson                     |  | Director                                                                     |  | March 27, 2015
|                                                        |  |                                                                             
|/s/ Michael Lewis
Michael Lewis                         |  | Director                                                                     |  | March 27, 2015
|                                                        |  |                                                                             
|/s/ Kevin Rakin
Kevin Rakin                             |  | Director                                                                     |  | March 27, 2015



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Histogenics Corporation

Index to the Consolidated Financial Statements



|                                                                                                                                                     |  |      |     | 
|---------------------------------------------------------------------------------------------------------------------------------------------------- |  | ---- | --- | 
|                                                                                                                                                     |  | Page |    
|Report of Independent Registered Public Accounting Firm                                                                                              |  |      | 100 | 
|                                                                                                                                                     | 
|Consolidated Balance Sheets as of December 31, 2014 and 2013                                                                                         |  |      | 101 | 
|                                                                                                                                                     | 
|Consolidated Statements of Operations for the Years Ended December 31, 2014 and 2013                                                                 |  |      | 102 | 
|                                                                                                                                                     | 
|Consolidated Statements of Convertible Redeemable Preferred Stock and Stockholders Equity (Deficit) for the
 Years Ended December 31, 2014 and 2013 |  |      | 103 | 
|                                                                                                                                                     | 
|Consolidated Statements of Cash Flows for the Years Ended December 31, 2014 and 2013                                                                 |  |      | 104 | 
|                                                                                                                                                     | 
|Notes to Consolidated Financial Statements                                                                                                           |  |      | 105 | 



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##### Table of Contents

Report of Independent Registered Public Accounting Firm

Board of Directors and Stockholders

Histogenics Corporation

We have audited the accompanying consolidated balance sheets of Histogenics Corporation (a Delaware corporation) and subsidiary (the Company)
as of December 31, 2014 and 2013, and the related consolidated statements of operations, convertible redeemable preferred stock and stockholders equity (deficit), and cash flows for each of the two years in the period ended
December 31, 2014. These financial statements are the responsibility of the Companys management. Our responsibility is to express an opinion on these financial statements based on our audits.

We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we
plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement. We were not engaged to perform an audit of the Companys internal control over financial reporting. Our audits
included consideration of internal control over financial reporting as a basis for designing audit procedures that are appropriate in the circumstances, but not for the purpose of expressing an opinion on the effectiveness of the Companys
internal control over financial reporting. Accordingly, we express no such opinion. An audit also includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements, assessing the accounting principles
used and significant estimates made by management, as well as evaluating the overall financial statement presentation. We believe that our audits provide a reasonable basis for our opinion.

In our opinion, the consolidated financial statements referred to above present fairly, in all material respects, the financial position of Histogenics
Corporation and subsidiary as of December 31, 2014 and 2013, and the results of their operations and their cash flows for the years then ended, in conformity with accounting principles generally accepted in the United States of America.

/s/ Grant Thornton LLP

Boston, Massachusetts

March 27, 2015



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Histogenics Corporation

Consolidated Balance Sheets

(In thousands, except share and per share data)



|                                                                                                                                                                                                                                                                                                                                  |  |              |          |   |      |   |          |  
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |  | ------------ | -------- | - | ---- | - | -------- | -
|                                                                                                                                                                                                                                                                                                                                  |  | December 31, |         
|                                                                                                                                                                                                                                                                                                                                  |  | 2014         |          |   | 2013 |  
|ASSETS                                                                                                                                                                                                                                                                                                                            |  |              |          |   |      |   |          |  
|Current assets:                                                                                                                                                                                                                                                                                                                   |  |              |          |   |      |   |          |  
|Cash and cash equivalents                                                                                                                                                                                                                                                                                                         |  | $            | 58,060   |   |      | $ | 8,734    |  
|Prepaid expenses and other current assets                                                                                                                                                                                                                                                                                         |  |              | 796      |   |      |   | 519      |  
|Initial public offering costs                                                                                                                                                                                                                                                                                                     |  |              |         |   |      |   | 1,093    |  
|                                                                                                                                                                                                                                                                                                                                  |  |              |          |   |      |   |          |  
|Total current assets                                                                                                                                                                                                                                                                                                              |  |              | 58,856   |   |      |   | 10,346   |  
|Property and equipment, net                                                                                                                                                                                                                                                                                                       |  |              | 4,878    |   |      |   | 2,283    |  
|Intangible asset, net                                                                                                                                                                                                                                                                                                             |  |              | 510      |   |      |   | 570      |  
|Noncurrent deferred tax assets, net                                                                                                                                                                                                                                                                                               |  |              | 651      |   |      |   | 1,058    |  
|Restricted cash                                                                                                                                                                                                                                                                                                                   |  |              | 604      |   |      |   | 522      |  
|Other assets                                                                                                                                                                                                                                                                                                                      |  |              |         |   |      |   | 17       |  
|                                                                                                                                                                                                                                                                                                                                  |  |              |          |   |      |   |          |  
|Total assets                                                                                                                                                                                                                                                                                                                      |  | $            | 65,499   |   |      | $ | 14,796   |  
|                                                                                                                                                                                                                                                                                                                                  |  |              |          |   |      |   |          |  
|LIABILITIES, CONVERTIBLE REDEEMABLE PREFERRED STOCK AND STOCKHOLDERS EQUITY (DEFICIT)                                                                                                                                                                                                                                            |  |              |          |   |      |   |          |  
|Current liabilities:                                                                                                                                                                                                                                                                                                              |  |              |          |   |      |   |          |  
|Accounts payable                                                                                                                                                                                                                                                                                                                  |  | $            | 4,886    |   |      | $ | 2,530    |  
|Accrued expenses                                                                                                                                                                                                                                                                                                                  |  |              | 1,683    |   |      |   | 1,035    |  
|Current portion of deferred rent                                                                                                                                                                                                                                                                                                  |  |              | 219      |   |      |   | 168      |  
|Current portion of deferred lease incentive                                                                                                                                                                                                                                                                                       |  |              | 407      |   |      |   | 296      |  
|Current portion of equipment loan                                                                                                                                                                                                                                                                                                 |  |              | 405      |   |      |   |         |  
|Deferred tax liabilities, net                                                                                                                                                                                                                                                                                                     |  |              | 651      |   |      |   | 1,058    |  
|                                                                                                                                                                                                                                                                                                                                  |  |              |          |   |      |   |          |  
|Total current liabilities                                                                                                                                                                                                                                                                                                         |  |              | 8,251    |   |      |   | 5,087    |  
|Deferred rent, long-term                                                                                                                                                                                                                                                                                                          |  |              | 379      |   |      |   | 392      |  
|Deferred lease incentive, long-term                                                                                                                                                                                                                                                                                               |  |              | 1,318    |   |      |   | 888      |  
|Equipment loan, long-term                                                                                                                                                                                                                                                                                                         |  |              | 1,345    |   |      |   |         |  
|Net sales distribution payment liability                                                                                                                                                                                                                                                                                          |  |              |         |   |      |   | 13,100   |  
|Warrant liability                                                                                                                                                                                                                                                                                                                 |  |              |         |   |      |   | 636      |  
|Other liability                                                                                                                                                                                                                                                                                                                   |  |              |         |   |      |   | 13,176   |  
|                                                                                                                                                                                                                                                                                                                                  |  |              |          |   |      |   |          |  
|Total liabilities                                                                                                                                                                                                                                                                                                                 |  |              | 11,293   |   |      |   | 33,279   |  
|                                                                                                                                                                                                                                                                                                                                  |  |              |          |   |      |   |          |  
|Commitments and contingencies (Note 7)                                                                                                                                                                                                                                                                                            |  |              |          |   |      |   |          |  
|Convertible redeemable preferred stock (Note 11):                                                                                                                                                                                                                                                                                 |  |              |          |   |      |   |          |  
|Series A convertible redeemable preferred stock, $0.01 par value; authorized shares28,602,031 at December 31, 2013 and none
at December 31, 2014; issued and outstanding shares2,647,350 at December 31, 2013 and none at December 31, 2014; liquidation preference of $31,989 at December 31, 2013 and $0 at December 31, 2014 |  |              |         |   |      |   | 42,617   |  
|Series A-1 convertible redeemable preferred stock, $0.01 par value; authorized shares20,647,969 at December 31, 2013 and none
at December 31, 2014; issued and outstanding shares955,568 at December 31, 2013 and none at December 31, 2014; liquidation preference of $10,354 at December 31, 2013 and $0 at December 31, 2014 |  |              |         |   |      |   | 14,454   |  
|Stockholders equity (deficit):                                                                                                                                                                                                                                                                                                   |  |              |          |   |      |   |          |  
|Preferred stock, $0.01 par value; authorized sharesnone at December 31, 2013 and 10,000,000 at December 31, 2014; none
issued and outstanding at December 31, 2013 and December 31, 2014                                                                                                                                         |  |              |         |   |      |   |         |  
|Common stock, $0.01 par value; authorized shares70,000,000 at December 31, 2013 and 100,000,000 at December 31, 2014;
594,041 shares issued and outstanding at December 31, 2013 and 12,755,012 shares issued and outstanding at December 31, 2014                                                                               |  |              | 127      |   |      |   | 6        |  
|Additional paid-in capital                                                                                                                                                                                                                                                                                                        |  |              | 187,620  |   |      |   | 35,188   |  
|Accumulated deficit                                                                                                                                                                                                                                                                                                               |  |              | (133,541 | ) |      |   | (110,748 | )
|                                                                                                                                                                                                                                                                                                                                  |  |              |          |   |      |   |          |  
|Total stockholders equity (deficit)                                                                                                                                                                                                                                                                                              |  |              | 54,206   |   |      |   | (75,554  | )
|                                                                                                                                                                                                                                                                                                                                  |  |              |          |   |      |   |          |  
|Total liabilities, convertible redeemable preferred stock and stockholders equity (deficit)                                                                                                                                                                                                                                      |  | $            | 65,499   |   |      | $ | 14,796   |  
|                                                                                                                                                                                                                                                                                                                                  |  |              |          |   |      |   |          |  

The accompanying notes are an integral part of these consolidated financial statements.



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Histogenics Corporation

Consolidated Statements of Operations

(In thousands, except share and per share data)



|                                                                                                        |  |                          |           |   |      |   |         |  
|------------------------------------------------------------------------------------------------------- |  | ------------------------ | --------- | - | ---- | - | ------- | -
|                                                                                                        |  | Years Ended December 31, |          
|                                                                                                        |  | 2014                     |           |   | 2013 |  
|Revenue                                                                                                 |  | $                        |          |   |      | $ | 8       |  
|                                                                                                        |  |                         
|Operating expenses:                                                                                     |  |                          |           |   |      |   |         |  
|Research and development                                                                                |  |                          | 25,856    |   |      |   | 11,946  |  
|General and administrative                                                                              |  |                          | 6,746     |   |      |   | 4,847   |  
|Impairment of goodwill and intangible assets                                                            |  |                          | 60        |   |      |   | 60      |  
|                                                                                                        |  |                          |           |   |      |   |         |  
|Total operating expenses                                                                                |  |                          | 32,662    |   |      |   | 16,853  |  
|                                                                                                        |  |                          |           |   |      |   |         |  
|Loss from operations                                                                                    |  |                          | (32,662   | ) |      |   | (16,845 | )
|                                                                                                        |  |                         
|Other income (expense):                                                                                 |  |                          |           |   |      |   |         |  
|Interest expense, net                                                                                   |  |                          | (151      | ) |      |   |        |  
|Other income (expense), net                                                                             |  |                          | 13        |   |      |   | (52     | )
|Change in fair value of warrant liability, other liability and net sales distribution payment liability |  |                          | 10,007    |   |      |   | (8,815  | )
|                                                                                                        |  |                          |           |   |      |   |         |  
|Total other income (expense), net                                                                       |  |                          | 9,869     |   |      |   | (8,867  | )
|                                                                                                        |  |                          |           |   |      |   |         |  
|Net loss                                                                                                |  | $                        | (22,793   | ) |      | $ | (25,712 | )
|                                                                                                        |  |                          |           |   |      |   |         |  
|Earnings (loss) attributable to common stockholdersbasic and diluted (Note 3)                          |  | $                        | (10,510   | ) |      | $ | (56,003 | )
|                                                                                                        |  |                          |           |   |      |   |         |  
|Earnings (loss) per common sharebasic and diluted (Note 3):                                            |  | $                        | (6.85     | ) |      | $ | (96.58  | )
|                                                                                                        |  |                          |           |   |      |   |         |  
|Weighted-average shares used to compute earnings per common sharebasic and diluted (Note 3):           |  |                          | 1,534,108 |   |      |   | 579,849 |  
|                                                                                                        |  |                          |           |   |      |   |         |  

The accompanying notes are an integral part of these consolidated financial statements.



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Histogenics Corporation

Consolidated Statements of Convertible Redeemable Preferred Stock and Stockholders Equity
(Deficit)

(In thousands, except share and per share data)



|                                                                                                                                    |  |                                                             |            |   |                                                               |   |         |        |  |                                    |            |   |                                |   |         |                          |  |  |                    |  |            |                                   |  |   |        |  |  |  |        |   |  |   |   |  |  |   |         |   |  |   |          |   |  |   |         |  
|----------------------------------------------------------------------------------------------------------------------------------- |  | ----------------------------------------------------------- | ---------- | - | ------------------------------------------------------------- | - | ------- | ------ |  | ---------------------------------- | ---------- | - | ------------------------------ | - | ------- | ------------------------ |  |  | ------------------ |  | ---------- | --------------------------------- |  | - | ------ |  |  |  | ------ | - |  | - | - |  |  | - | ------- | - |  | - | -------- | - |  | - | ------- | -
|                                                                                                                                    |  | Series AConvertibleRedeemablePreferred Stock$0.01 Par Value |            |   | Series A-1ConvertibleRedeemablePreferred Stock$0.01 Par Value |   |         |        |  | Class A CommonStock $0.01 ParValue |            |   | RestrictedStock $0.01 ParValue |   |         | AdditionalPaid-InCapital |  |  | AccumulatedDeficit |  |            | TotalStockholdersEquity(Deficit) | 
|                                                                                                                                    |  | Shares                                                      |            |   | Amount                                                        |   |         | Shares |  |                                    | Amount     |   |                                |   |         | Shares                   |  |  | Amount             |  |            | Shares                            |  |   | Amount |  |  |  |       
|Balance at December 31, 2012                                                                                                        |  |                                                             | 2,647,350  |   |                                                               | $ | 29,619  |        |  |                                    |           |   |                                | $ |        |                          |  |  |                    |  | 578,490    |                                   |  | $ | 6      |  |  |  | 5,654  |   |  | $ |  |  |  | $ | 65,319  |   |  | $ | (85,036  | ) |  | $ | (19,711 | )
|Accruals of dividends and accretion to redemption value                                                                             |  |                                                             |           |   |                                                               |   | 2,291   |        |  |                                    |           |   |                                |   |        |                          |  |  |                    |  |           |                                   |  |   |       |  |  |  |       |   |  |   |  |  |  |   | (2,291  | ) |  |   |         |   |  |   | (2,291  | )
|Extinguishment of Series A convertible redeemable preferred stock                                                                   |  |                                                             | (2,647,350 | ) |                                                               |   | (31,910 | )      |  |                                    |           |   |                                |   |        |                          |  |  |                    |  |           |                                   |  |   |       |  |  |  |       |   |  |   |  |  |  |   | (28,000 | ) |  |   |         |   |  |   | (28,000 | )
|Reissuance of Series A convertible redeemable preferred stock                                                                       |  |                                                             | 2,647,350  |   |                                                               |   | 42,617  |        |  |                                    |           |   |                                |   |        |                          |  |  |                    |  |           |                                   |  |   |       |  |  |  |       |   |  |   |  |  |  |   |        |   |  |   |         |   |  |   |        |  
|Issuance of Series A-1 convertible redeemable preferred stock, net of issuance costs of $63                                         |  |                                                             |           |   |                                                               |   |        |        |  |                                    | 955,568    |   |                                |   | 14,454  |                          |  |  |                    |  |           |                                   |  |   |       |  |  |  |       |   |  |   |  |  |  |   |        |   |  |   |         |   |  |   |        |  
|Issuance of restricted common stock                                                                                                 |  |                                                             |           |   |                                                               |   |        |        |  |                                    |           |   |                                |   |        |                          |  |  |                    |  |           |                                   |  |   |       |  |  |  | 7,554  |   |  |   |  |  |  |   |        |   |  |   |         |   |  |   |        |  
|Vesting of restricted stock                                                                                                         |  |                                                             |           |   |                                                               |   |        |        |  |                                    |           |   |                                |   |        |                          |  |  |                    |  | 1,413      |                                   |  |   |       |  |  |  | (1,413 | ) |  |   |  |  |  |   |        |   |  |   |         |   |  |   |        |  
|Stock-based compensation expense                                                                                                    |  |                                                             |           |   |                                                               |   |        |        |  |                                    |           |   |                                |   |        |                          |  |  |                    |  |           |                                   |  |   |       |  |  |  |       |   |  |   |  |  |  |   | 158     |   |  |   |         |   |  |   | 158     |  
|Exercise of common stock options                                                                                                    |  |                                                             |           |   |                                                               |   |        |        |  |                                    |           |   |                                |   |        |                          |  |  |                    |  | 2,343      |                                   |  |   |       |  |  |  |       |   |  |   |  |  |  |   | 2       |   |  |   |         |   |  |   | 2       |  
|Net loss                                                                                                                            |  |                                                             |           |   |                                                               |   |        |        |  |                                    |           |   |                                |   |        |                          |  |  |                    |  |           |                                   |  |   |       |  |  |  |       |   |  |   |  |  |  |   |        |   |  |   | (25,712  | ) |  |   | (25,712 | )
|                                                                                                                                    |  |                                                             |            |   |                                                               |   |         |        |  |                                    |            |   |                                |   |         |                          |  |  |                    |  |            |                                   |  |   |        |  |  |  |        |   |  |   |   |  |  |   |         |   |  |   |          |   |  |   |         |  
|Balance at December 31, 2013                                                                                                        |  |                                                             | 2,647,350  |   |                                                               |   | 42,617  |        |  |                                    | 955,568    |   |                                |   | 14,454  |                          |  |  |                    |  | 582,246    |                                   |  |   | 6      |  |  |  | 11,795 |   |  |   |  |  |  |   | 35,188  |   |  |   | (110,748 | ) |  |   | (75,554 | )
|Issuance of Series A-1 convertible redeemable preferred stock, net of issuance costs of $10                                         |  |                                                             |           |   |                                                               |   |        |        |  |                                    | 955,565    |   |                                |   | 13,834  |                          |  |  |                    |  |           |                                   |  |   |       |  |  |  |       |   |  |   |  |  |  |   | (3,520  | ) |  |   |         |   |  |   | (3,520  | )
|Issuance of warrant as part of the consideration for an equipment line of credit in July 2014                                       |  |                                                             |           |   |                                                               |   |        |        |  |                                    |           |   |                                |   |        |                          |  |  |                    |  |           |                                   |  |   |       |  |  |  |       |   |  |   |  |  |  |   | 51      |   |  |   |         |   |  |   | 51      |  
|Vesting of restricted stock                                                                                                         |  |                                                             |           |   |                                                               |   |        |        |  |                                    |           |   |                                |   |        |                          |  |  |                    |  | 3,302      |                                   |  |   |       |  |  |  | (3,302 | ) |  |   |  |  |  |   |        |   |  |   |         |   |  |   |        |  
|Stock-based compensation expense                                                                                                    |  |                                                             |           |   |                                                               |   |        |        |  |                                    |           |   |                                |   |        |                          |  |  |                    |  |           |                                   |  |   |       |  |  |  |       |   |  |   |  |  |  |   | 547     |   |  |   |         |   |  |   | 547     |  
|Exercise of common stock options                                                                                                    |  |                                                             |           |   |                                                               |   |        |        |  |                                    |           |   |                                |   |        |                          |  |  |                    |  | 33,988     |                                   |  |   |       |  |  |  |       |   |  |   |  |  |  |   | 26      |   |  |   |         |   |  |   | 26      |  
|Conversion of preferred and accrued dividends into common stock                                                                     |  |                                                             | (2,647,350 | ) |                                                               |   | (42,617 | )      |  |                                    | (1,911,133 | ) |                                |   | (28,288 | )                        |  |  |                    |  | 5,158,407  |                                   |  |   | 52     |  |  |  |       |   |  |   |  |  |  |   | 70,853  |   |  |   |         |   |  |   | 70,905  |  
|Conversion of notes payable into common stock                                                                                       |  |                                                             |           |   |                                                               |   |        |        |  |                                    |           |   |                                |   |        |                          |  |  |                    |  | 1,009,115  |                                   |  |   | 10     |  |  |  |       |   |  |   |  |  |  |   | 11,090  |   |  |   |         |   |  |   | 11,100  |  
|Settlement of the Other Liability through the conversion of warrants net settled into common stock and the issuance of common
stock |  |                                                             |           |   |                                                               |   |        |        |  |                                    |           |   |                                |   |        |                          |  |  |                    |  | 50,370     |                                   |  |   |       |  |  |  |       |   |  |   |  |  |  |   | 1,102   |   |  |   |         |   |  |   | 1,102   |  
|Extinguishment of Net Sales Distribution Payment Liability redemption provision                                                     |  |                                                             |           |   |                                                               |   |        |        |  |                                    |           |   |                                |   |        |                          |  |  |                    |  |           |                                   |  |   |       |  |  |  |       |   |  |   |  |  |  |   | 15,803  |   |  |   |         |   |  |   | 15,803  |  
|Issuance of common stock from initial public offering, net of underwriting fees and issuance costs of $8,461                        |  |                                                             |           |   |                                                               |   |        |        |  |                                    |           |   |                                |   |        |                          |  |  |                    |  | 5,909,091  |                                   |  |   | 59     |  |  |  |       |   |  |   |  |  |  |   | 56,480  |   |  |   |         |   |  |   | 56,539  |  
|Net loss                                                                                                                            |  |                                                             |           |   |                                                               |   |        |        |  |                                    |           |   |                                |   |        |                          |  |  |                    |  |           |                                   |  |   |       |  |  |  |       |   |  |   |  |  |  |   |        |   |  |   | (22,793  | ) |  |   | (22,793 | )
|                                                                                                                                    |  |                                                             |            |   |                                                               |   |         |        |  |                                    |            |   |                                |   |         |                          |  |  |                    |  |            |                                   |  |   |        |  |  |  |        |   |  |   |   |  |  |   |         |   |  |   |          |   |  |   |         |  
|Balance at December 31, 2014                                                                                                        |  |                                                             |           |   |                                                               | $ |        |        |  |                                    |           |   |                                | $ |        |                          |  |  |                    |  | 12,746,519 |                                   |  | $ | 127    |  |  |  | 8,493  |   |  | $ |  |  |  | $ | 187,620 |   |  | $ | (133,541 | ) |  | $ | 54,206  |  
|                                                                                                                                    |  |                                                             |            |   |                                                               |   |         |        |  |                                    |            |   |                                |   |         |                          |  |  |                    |  |            |                                   |  |   |        |  |  |  |        |   |  |   |   |  |  |   |         |   |  |   |          |   |  |   |         |  

The accompanying notes are an integral part of these consolidated financial statements.



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Histogenics Corporation

Consolidated Statements of Cash Flows

(In thousands, except share and per share data)



|                                                                                                   |  |                         |         |   |      |   |         |  
|-------------------------------------------------------------------------------------------------- |  | ----------------------- | ------- | - | ---- | - | ------- | -
|                                                                                                   |  | Years EndedDecember 31, |        
|                                                                                                   |  | 2014                    |         |   | 2013 |  
|CASH FLOWS FROM OPERATING ACTIVITIES:                                                              |  |                         |         |   |      |   |         |  
|Net loss                                                                                           |  | $                       | (22,793 | ) |      | $ | (25,712 | )
|Adjustments to reconcile net loss to net cash used in operating activities:                        |  |                         |         |   |      |   |         |  
|Depreciation                                                                                       |  |                         | 726     |   |      |   | 566     |  
|Deferred rent and lease incentive                                                                  |  |                         | 541     |   |      |   | (455    | )
|Impairment of goodwill and intangible asset                                                        |  |                         | 60      |   |      |   | 60      |  
|Loss on sale of property and equipment                                                             |  |                         |        |   |      |   | 20      |  
|Stock-based compensation                                                                           |  |                         | 547     |   |      |   | 158     |  
|Non-cash up front fee for note payable to Intrexon, including interest                             |  |                         | 10,100  |   |      |   |        |  
|Change in fair value of liabilities                                                                |  |                         | (10,007 | ) |      |   | 8,815   |  
|Amortization of deferred financing costs                                                           |  |                         | 38      |   |      |   |        |  
|Changes in operating assets and liabilities:                                                       |  |                         |         |   |      |   |         |  
|Prepaid expenses and other current assets                                                          |  |                         | (226    | ) |      |   | (156    | )
|Other non-current assets                                                                           |  |                         | (65     | ) |      |   | 1       |  
|Accounts payable                                                                                   |  |                         | 2,026   |   |      |   | 804     |  
|Accrued expenses                                                                                   |  |                         | 648     |   |      |   | 617     |  
|                                                                                                   |  |                         |         |   |      |   |         |  
|Net cash used in operating activities                                                              |  |                         | (18,405 | ) |      |   | (15,282 | )
|                                                                                                   |  |                         |         |   |      |   |         |  
|CASH FLOWS FROM INVESTING ACTIVITIES:                                                              |  |                         |         |   |      |   |         |  
|Purchases of property and equipment                                                                |  |                         | (3,321  | ) |      |   | (604    | )
|Proceeds from sale of property and equipment                                                       |  |                         |        |   |      |   | 50      |  
|                                                                                                   |  |                         |         |   |      |   |         |  
|Net cash used in investing activities                                                              |  |                         | (3,321  | ) |      |   | (554    | )
|                                                                                                   |  |                         |         |   |      |   |         |  
|CASH FLOWS FROM FINANCING ACTIVITIES:                                                              |  |                         |         |   |      |   |         |  
|Proceeds from IPO, net of underwriters fee of $4,550                                              |  |                         | 60,450  |   |      |   |        |  
|Proceeds from bridge financing                                                                     |  |                         | 1,000   |   |      |   |        |  
|Borrowings under equipment term loan                                                               |  |                         | 1,750   |   |      |   |        |  
|Issuance of Series A-1 preferred stock, net of issuance costs of $73                               |  |                         | 10,314  |   |      |   | 10,261  |  
|Costs associated with Initial Public Offering                                                      |  |                         | (2,488  | ) |      |   | (409    | )
|Proceeds from the exercise of common stock options                                                 |  |                         | 26      |   |      |   | 2       |  
|                                                                                                   |  |                         |         |   |      |   |         |  
|Net cash provided by financing activities                                                          |  |                         | 71,052  |   |      |   | 9,854   |  
|                                                                                                   |  |                         |         |   |      |   |         |  
|Net increase (decrease) in cash and cash equivalents                                               |  |                         | 49,326  |   |      |   | (5,982  | )
|Cash and cash equivalentsBeginning of period                                                      |  |                         | 8,734   |   |      |   | 14,716  |  
|                                                                                                   |  |                         |         |   |      |   |         |  
|Cash and cash equivalentsEnd of period                                                            |  | $                       | 58,060  |   |      | $ | 8,734   |  
|                                                                                                   |  |                         |         |   |      |   |         |  
|Supplemental disclosure of noncash investing and financing activities                              |  |                         |         |   |      |   |         |  
|Conversion of preferred stock into common stock upon closing of IPO                                |  | $                       | 70,905  |   |      | $ |        |  
|                                                                                                   |  |                         |         |   |      |   |         |  
|Conversion of convertible notes payable and accrued interest into common stock upon closing of IPO |  | $                       | 11,100  |   |      | $ |        |  
|                                                                                                   |  |                         |         |   |      |   |         |  
|Conversion of warrants, net settled, into common stock upon closing of IPO                         |  | $                       | 490     |   |      | $ |        |  
|                                                                                                   |  |                         |         |   |      |   |         |  
|Settlement of Other Liability into common stock upon closing of IPO                                |  | $                       | 612     |   |      | $ |        |  
|                                                                                                   |  |                         |         |   |      |   |         |  
|IPO closing costs included in accounts payable and accrued expenses                                |  | $                       | 1,014   |   |      | $ |        |  
|                                                                                                   |  |                         |         |   |      |   |         |  
|Warrant issued in connection with an equipment term loan (Note 10)                                 |  | $                       | 51      |   |      | $ |        |  
|                                                                                                   |  |                         |         |   |      |   |         |  
|Accretion of dividends and redemption value on convertible preferred stock                         |  | $                       |        |   |      | $ | 2,291   |  
|                                                                                                   |  |                         |         |   |      |   |         |  
|Issuance of a note payable to Intrexon as consideration for license rights                         |  | $                       | 10,000  |   |      | $ |        |  
|                                                                                                   |  |                         |         |   |      |   |         |  
|Extinguishment of Series A Preferred Stock (Note 11)                                               |  | $                       |        |   |      | $ | 28,000  |  
|                                                                                                   |  |                         |         |   |      |   |         |  
|Extinguishment of Net Sales Distribution Payment Liability redemption feature                      |  | $                       | 15,803  |   |      | $ |        |  
|                                                                                                   |  |                         |         |   |      |   |         |  
|Adjustment to fair value of Series A-1 Preferred Stock related to the third closing (Note 11)      |  | $                       | 3,520   |   |      | $ |        |  
|                                                                                                   |  |                         |         |   |      |   |         |  

The accompanying notes are an integral part of these consolidated financial statements.



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Histogenics Corporation

Notes to Consolidated Financial Statements

(In thousands, except share and per share data)



|1. | NATURE OF BUSINESS
|-- | ------------------

Organization

Histogenics Corporation
(the Company) was incorporated under the laws of the Commonwealth of Massachusetts on June 28, 2000 and has its principal operations in Waltham, Massachusetts. In 2006, the Companys board of directors approved a corporate
reorganization pursuant to which the Company incorporated as a Delaware corporation. The Company is a regenerative medicine company engaged in developing and commercializing products in the musculoskeletal segment of the marketplace. The Company
combines cell therapy and tissue engineering technologies to develop products for tissue repair and regeneration focusing on patients suffering from particular cartilage-derived pain and immobility. The Company is developing technology and products
to reverse or prevent cartilage damage, including NeoCart for the repair of cartilage lesions. NeoCart is currently in a Phase 3 clinical trial in the United States under a special protocol assessment with the U.S. Food and Drug Administration
(FDA) for the treatment of knee cartilage damage.

On May 13, 2011, the Company completed the acquisition of ProChon Biotech Ltd.
(ProChon), a privately-held biotechnology company focused on modulating the fibroblast growth factor system to enable it to create more effective solutions for tissue regeneration. ProChons products combine cell regeneration
technologies with proprietary growth factors and biocompatible scaffolds to restore injured or chronically damaged tissues to normal. The acquisition of ProChon provides the Company with access to a significant portfolio of intellectual property,
including proprietary cell growth factors, in addition to furthering opportunities for the use of biomaterials to create more effective solutions for regenerating human tissue. In the aggregate, the fair value of the consideration paid to acquire
ProChon was $2,224. The acquisition led to the initial recognition of goodwill, which was subsequently written off in 2011, and intangible assets including IPR&D and a licensing agreement which have been impaired as discussed in Note 2.

Since its inception, the Company has devoted substantially all of its efforts to product development, recruiting management and technical staff, raising
capital, starting up production and building infrastructure and has not generated revenues from its planned principal operations. In addition, expenses have primarily been for research and development and administrative costs.

The Company is subject to a number of risks. The developmental nature of its activities is such that significant inherent risks exist in the Companys
operations. Principal among these risks are the successful development of therapeutics, successfully enrolling patients in our clinical trials in a timely manner, obtaining regulatory approval for any of our product candidates in any jurisdiction,
compliance with government regulations, protection of proprietary therapeutics, ability to obtain adequate financing, fluctuations in operating results, dependence on key personnel and collaborative partners, adoption of the Companys products
by the physician community, rapid technological changes inherent in the markets targeted, and substitute products and competition from larger companies.

Initial public offering

On December 3, 2014, the
Company completed its initial public offering (IPO) whereby the Company sold 5,909,091 shares of common stock at a price of $11.00 per share. The shares began trading on the Nasdaq Global Market on December 3, 2014. Gross proceeds
from the offering were $65,000. After giving effect to underwriting discounts and commissions and offering expenses payable by the Company, net proceeds were $56,539. In addition, each of the following occurred in connection with the completion of
the IPO on December 3, 2014:



| |  |  | the conversion of all outstanding shares of the Companys convertible redeemable preferred stock and accrued dividends into 5,158,407 shares of common stock;
| | - |  | -------------------------------------------------------------------------------------------------------------------------------------------------------------



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Histogenics Corporation

Notes to Consolidated Financial Statements

(In thousands, except share and per share data)



| |  |  | the conversion of $11,100 in convertible notes payable and accrued interest into 1,009,115 shares of common stock;
| | - |  | ------------------------------------------------------------------------------------------------------------------



| |  |  | the net exercise of certain warrants into 44,531 shares of common stock and the surrender of 5,839 warrant shares to satisfy the Other Liability, resulting in the settlement of the related warrant liability and Other
Liability upon the closing of the IPO of $490 and $612, respectively to additional paid-in capital;
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | the termination of the redemption provision of the net sales royalty payment; and
| | - |  | ---------------------------------------------------------------------------------



| |  |  | the Company is now authorized to issue 100,000,000 shares of common stock and 10,000,000 shares of preferred stock.
| | - |  | -------------------------------------------------------------------------------------------------------------------

Basis of Accounting

The consolidated financial
statements are prepared in conformity with accounting principles generally accepted in the United States of America (U.S. GAAP). The consolidated financial statements include the accounts of Histogenics Corporation and its wholly-owned
subsidiaries, ProChon and Histogenics Securities Corporation. All significant intercompany accounts and transactions are eliminated in consolidation.



|2. | SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
|-- | ------------------------------------------

Use of Estimates

The preparation of
the Companys consolidated financial statements requires it to make estimates and assumptions that impact the reported amounts of assets, liabilities, revenues and expenses and the disclosure of contingent assets and liabilities in the
Companys consolidated financial statements and accompanying notes. The most significant estimates in the Companys consolidated financial statements relate to the valuation of equity awards, fair value estimates of warrant liabilities and
derivatives, net sales distribution payment liability, other liability, purchase price allocations, estimated useful lives of fixed assets and intangible assets and accruals relating to clinical trials. The Company bases estimates and assumptions on
historical experience when available and on various factors that it believes to be reasonable under the circumstances. The Company evaluates its estimates and assumptions on an ongoing basis. The Companys actual results may differ from these
estimates under different assumptions or conditions.

Foreign Currency Translation

The Companys consolidated financial statements are prepared in U.S. dollars. The Companys foreign subsidiary uses the U.S. dollar as its functional
and reporting currency, as management determined that the U.S. dollar is the primary currency of the economic environment in which the subsidiary operates. When transactions are required to be paid in the local currency of the foreign subsidiary,
any resulting foreign currency transaction gain or loss is recorded as a component of Other income (expense), net in the consolidated statements of operations.

Reverse Stock Split

The Companys board of
directors voted to approve a 1-for-10.804 reverse stock split on October 27, 2014, which was effected on November 14, 2014. Accordingly, all historical share and per share amounts in the consolidated financial statements have been
retroactively adjusted for all periods presented to give effect to a 1-for-10.804 reverse stock split of all of the Companys capital stock, including reclassifying an amount equal to the reduction in par value as a result of the decreased
shares to additional paid-in capital.



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Histogenics Corporation

Notes to Consolidated Financial Statements

(In thousands, except share and per share data)



Segment and Geographic Information

Operating segments are defined as components of an enterprise about which separate discrete financial information is available for evaluation by the chief
operating decision-maker (CODM) or decision-making group in making decisions regarding resource allocation and assessing performance. The Company operates in two geographic regions: the United States (Massachusetts) and Israel (Tel Aviv)
and views its operations as two operating segments: Histogenics Corporation (United States) and ProChon (Israel) as the CODM reviews separate discrete financial information in making decisions regarding resource allocations and assessing
performance. Operating segments that have similar economic characteristics can be aggregated. As the nature of the products, customers, and methods to distribute products are the same and the nature of the regulatory environment, the production
processes and historical and estimated future margins are similar, the two operating segments have been aggregated into one reporting segment as they have similar economic characteristics.

Information about the Companys operations in different geographic regions is presented in the tables below:



|               |  |                          |   |  |      |   |   | 
|-------------- |  | ------------------------ | - |  | ---- | - | - | 
|               |  | Years Ended December 31, |  
|               |  | 2014                     |   |  | 2013 |  
|Revenues:      |  |                          |   |  |      |   |   | 
|United States  |  | $                        |  |  |      | $ |  | 
|Israel         |  |                          |  |  |      |   | 8 | 
|               |  |                          |   |  |      |   |   | 
|Total Revenues |  | $                        |  |  |      | $ | 8 | 
|               |  |                          |   |  |      |   |   | 



|                        |  |                    |       |  |      |   |       | 
|----------------------- |  | ------------------ | ----- |  | ---- | - | ----- | 
|                        |  | As of December 31, |      
|                        |  | 2014               |       |  | 2013 |  
|Long-lived assets:      |  |                    |       |  |      |   |       | 
|United States           |  | $                  | 4,866 |  |      | $ | 2,266 | 
|Israel                  |  |                    | 12    |  |      |   | 17    | 
|                        |  |                    |       |  |      |   |       | 
|Total long-lived assets |  | $                  | 4,878 |  |      | $ | 2,283 | 
|                        |  |                    |       |  |      |   |       | 

Fair Value Measurements

The carrying amounts reported in the Companys consolidated financial statements for cash and cash equivalents, accounts payable and accrued liabilities
approximate their respective fair values because of the short-term nature of these accounts.

Fair value is defined as the price that would be received if
selling an asset or paid to transfer a liability in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date.

Fair value should be based on the assumptions that market participants would use when pricing an asset or liability and is based on a fair value hierarchy
that prioritizes the information used to develop those assumptions. The fair value hierarchy gives the highest priority to quoted prices in active markets (observable inputs) and the lowest priority to the Companys assumptions (unobservable
inputs). Fair value measurements should be disclosed separately by level within the fair value hierarchy. For assets and liabilities recorded at fair value, it is the Companys policy to maximize the use of observable inputs and minimize the
use of unobservable inputs when developing fair value measurements, in accordance with established fair value hierarchy.



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Histogenics Corporation

Notes to Consolidated Financial Statements

(In thousands, except share and per share data)



Fair value measurements for assets and liabilities where there exists limited or no observable market data
are based primarily upon estimates, and often are calculated based on the economic and competitive environment, the characteristics of the asset or liability and other factors. Therefore, the results cannot be determined with precision and may not
be realized in an actual sale or immediate settlement of the asset or liability. Additionally, there may be inherent weaknesses in any valuation technique, and changes in the underlying assumptions used, including discount rates and estimates of
future cash flows, could significantly affect the results of current or future values.

Additionally, from time to time, the Company may be required to
record at fair value other assets on a nonrecurring basis, such as assets held for sale and certain other assets. These nonrecurring fair value adjustments typically involve application of lower-of-cost-or-market accounting or write-downs of
individual assets.

The fair value hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets (Level 1), and
the lowest priority to unobservable inputs (Level 3). The Companys financial assets are classified within the fair value hierarchy based on the lowest level of inputs that is significant to the fair value measurement. The three levels of the
fair value hierarchy, and its applicability to the Companys financial assets, are described below.

Level 1: Unadjusted quoted
prices in active markets that are accessible at the measurement date of identical, unrestricted assets.

Level 2: Quoted prices for
similar assets, or inputs that are observable, either directly or indirectly, for substantially the full term through corroboration with observable market data. Level 2 includes investments valued at quoted prices adjusted for legal or contractual
restrictions specific to the security.

Level 3: Pricing inputs are unobservable for the assets, that is, inputs that reflect the
reporting entitys own assumptions about the assumptions market participants would use in pricing the assets. Level 3 includes private investments that are supported by little or no market activity.

Level 3 valuations are for instruments that are not traded in active markets or are subject to transfer restrictions and may be adjusted to reflect
illiquidity and/or non-transferability, with such adjustment generally based on available market evidence. In the absence of such evidence, managements best estimate is used.

An adjustment to the pricing method used within either Level 1 or Level 2 inputs could generate a fair value measurement that effectively falls in a lower
level in the hierarchy. The Company had no assets or liabilities classified as Level 1 or Level 2 as of December 31, 2014 and 2013 other than the money market fund described in the Cash and Cash Equivalents section below and there
were no material re-measurements of fair value with respect to financial assets and liabilities, during the periods presented, other than those assets and liabilities that are measured at fair value on a recurring basis.

Transfers are calculated on values as of the transfer date. There were no transfers between Levels 1, 2 and 3 during the years ended December 31, 2014
and 2013.

The Company has liabilities classified as Level 3 that are measured by management at fair value on a quarterly basis as described in Note 9.



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Histogenics Corporation

Notes to Consolidated Financial Statements

(In thousands, except share and per share data)



Concentration of Credit Risk

Financial instruments, which potentially subject the Company to significant concentration of credit risk, consist primarily of cash and cash equivalents. The
Company maintains deposits in federally insured financial institutions in excess of federally insured limits. The Company has not experienced any losses in such accounts and management believes that the Company is not exposed to significant credit
risk due to the financial position of the depository institutions in which those deposits are held. The Company has no financial instruments with off-balance sheet risk of loss.

Cash and Cash Equivalents

Cash and cash equivalents
include cash in readily available checking and savings accounts and money market funds. The Company considers all highly liquid investments with an original maturity of three months or less from the date of purchase to be cash equivalents.

The Companys cash equivalents, which consist of money market funds, are measured at fair value on a recurring basis. As of December 31, 2014 and
2013, the carrying amount of cash and cash equivalents was $58,060 and $8,734, respectively, which approximates fair value and was determined based upon Level 1 inputs. Money market funds are valued using quoted market prices with no valuation
adjustments applied. Accordingly, these securities are categorized as Level 1 and had a balance of $49,750 and $0 as of December 31, 2014 and 2013, respectively, shown in the table below.



|                  |  |       |        |  |                                        |   |        |                                            |  |   |                                        |  |  |   |   | 
|----------------- |  | ----- | ------ |  | -------------------------------------- | - | ------ | ------------------------------------------ |  | - | -------------------------------------- |  |  | - | - | 
|Description       |  | Total |        |  | Quotedprices inactive markets(Level 1) |   |        | Significantotherobservable inputs(Level 2) |  |   | Significantunobservableinputs(Level 3) | 
|December 31, 2014 |  |       |        |  |                                        |   |        |                                            |  |   |                                        |  |  |   |   | 
|Money market      |  | $     | 49,750 |  |                                        | $ | 49,750 |                                            |  | $ |                                       |  |  | $ |  | 
|                  |  |       |        |  |                                        |   |        |                                            |  |   |                                        |  |  |   |   | 
|                  |  | $     | 49,750 |  |                                        | $ | 49,750 |                                            |  | $ |                                       |  |  | $ |  | 
|                  |  |       |        |  |                                        |   |        |                                            |  |   |                                        |  |  |   |   | 

Business Combinations

The Company assigns the value of the consideration transferred to acquire or merge with a business to the tangible assets and identifiable intangible assets
acquired and liabilities assumed on the basis of their fair values at the date of acquisition. The Company assesses the fair value of assets, including intangible assets, using a variety of methods, including present-value models. Each asset is
measured at fair value from the perspective of a market participant. Transaction costs and restructuring costs associated with the transaction are expensed as incurred. Consideration transferred is measured on the date of the transaction. The
consideration transferred in excess of the fair value of the assets acquired less the fair value of the liabilities assumed, if any, is recorded as goodwill on the Companys balance sheet. In the event the fair value of the assets acquired less
the fair value of the liabilities assumed exceeds the value of the consideration transferred, a bargain purchase would be deemed to have occurred and a gain would be recorded on the Companys statement of operations.

Property and Equipment

Property and equipment are
recorded at historical cost. Costs for capital assets not yet placed into service are capitalized as construction in progress, and will be depreciated in accordance with the below guidelines once placed into service. Maintenance and repair costs are
expensed as incurred. Costs which materially improve or



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Histogenics Corporation

Notes to Consolidated Financial Statements

(In thousands, except share and per share data)



extend the lives of existing assets are capitalized. The Company provides for depreciation and amortization using the straight-line method over the estimated useful lives of the assets, which are
as follows:



|                       |  |                                                   
|---------------------- |  | --------------------------------------------------
|Asset Category         |  | Estimated Useful Lives                            
|Office equipment       |  | 3 to 5 years                                      
|Laboratory equipment   |  | 3 to 5 years                                      
|Leasehold improvements |  | Shorter of the remaining lease term or useful life

Upon retirement or sale, the cost of assets disposed and the related accumulated depreciation is removed from the accounts and
any resulting gain or loss is recorded in the consolidated statements of operations.

Impairment of Long-Lived Assets

Long-lived assets consist primarily of property and equipment and identifiable intangible assets. When impairment indicators exist, the Companys
management evaluates long-lived assets for potential impairment. An impairment loss is recorded if and when events and circumstances indicate that assets might be impaired and the undiscounted cash flows estimated to be generated by those assets are
less than the carrying amount of those assets. While the Companys current and historical operating losses and negative cash flows are indicators of impairment, management believes that future cash flows to be received support the carrying
value of its long-lived assets.

Impairments, if any, are recognized in earnings. An impairment loss would be recognized in an amount equal to the excess
of the carrying amount over the undiscounted expected future cash flows.

Intangible Assets

As of December 31, 2014 and 2013, the Companys intangible asset consists of acquired in-process research and development (IPR&D)
obtained through the acquisition of ProChon. IPR&D represents the fair value assigned to research and development assets that have not been completed at the date of acquisition. The value assigned to acquired IPR&D is determined by
estimating the costs to develop the acquired technology into commercially viable products, estimating the resulting revenue from the projects, and discounting the net cash flows to present value. The revenue and costs projections used to value
acquired IPR&D were adjusted based on the probability of success of developing a new product. Additionally, the projections considered the relevant market sizes and growth factors, expected trends in technology and the nature and expected timing
of new product introductions by the Company and its competitors. The rates utilized to discount the net cash flows to their present value were commensurate with the stage of development of the projects and uncertainties in the economic estimates
used in the projections described above.

IPR&D is considered an indefinite-lived intangible asset and is assessed for impairment annually or more
frequently if impairment indicators exist. When performing the impairment assessment, the Company first assesses qualitative factors to determine whether it is necessary to recalculate the fair value of its acquired IPR&D. If the Company
believes, as a result of the qualitative assessment, that it is more likely than not that the fair value of acquired IPR&D is less than its carrying amount, it calculates the fair value using the same methodology as described above. If the
carrying value of the Companys acquired IPR&D exceeds its fair value, then an impairment charge is taken and the intangible asset is written-down to its fair value.



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Histogenics Corporation

Notes to Consolidated Financial Statements

(In thousands, except share and per share data)



For the years ended December 31, 2014 and 2013, the Company determined that there was impairment of its IPR&D of $60 in each year. The Company performed its annual impairment test of its
IPR&D as of December 31, 2014 and 2013 using an income approach, including a discount rate of 14%, applied to probability-adjusted after-tax cash flows. The Company believes that the assumptions are representative of those a market
participant would use in estimating the fair value of the IPR&D. The Company notes that the pursuit of the underlying IPR&D has been delayed because the Companys core focus has been on the development of NeoCart so, there is a risk of
further impairment in the near future.

Intangible assets, net of accumulated impairment charges, are summarized as follows:



|      |  |                         |     |  |                         |   |      |               |  |   |      |  |  |                       |     |  |               |   |     |   |  |   |     | 
|----- |  | ----------------------- | --- |  | ----------------------- | - | ---- | ------------- |  | - | ---- |  |  | --------------------- | --- |  | ------------- | - | --- | - |  | - | --- | 
|      |  | As of December 31, 2014 |     |  | As of December 31, 2013 |  
|      |  | Cost                    |     |  | AccumulatedImpairment   |   |      | Net BookValue |  |   | Cost |  |  | AccumulatedImpairment |     |  | Net BookValue |  
|IPR&D |  | $                       | 630 |  |                         | $ | (120 | )             |  | $ | 510  |  |  | $                     | 630 |  |               | $ | (60 | ) |  | $ | 570 | 
|      |  |                         |     |  |                         |   |      |               |  |   |      |  |  |                       |     |  |               |   |     |   |  |   |     | 
|      |  | $                       | 630 |  |                         | $ | (120 | )             |  | $ | 510  |  |  | $                     | 630 |  |               | $ | (60 | ) |  | $ | 570 | 
|      |  |                         |     |  |                         |   |      |               |  |   |      |  |  |                       |     |  |               |   |     |   |  |   |     | 

Initial Public Offering Costs

The Company deferred direct incremental costs attributable with the IPO of its common stock prior to the closing of the IPO. These costs represent legal,
accounting and other direct costs related to the Companys efforts to raise capital through a public sale of its common stock. Upon completion of the IPO, $3,911 of IPO costs were reclassified to additional paid-in capital as a reduction of the
IPO proceeds. As of December 31, 2014, the Company has paid $2,897 with the remaining $1,014 included in accounts payable in the consolidated balance sheet. IPO costs of $1,093 are included in current assets in the consolidated balance sheets
as initial public offering costs as of December 31, 2013.

Restricted Cash

Restricted cash represents cash held in a depository account at a financial institution to collateralize a conditional stand-by letter of credit related to the
Companys Waltham, Massachusetts facility lease agreement and the Companys Lexington, Massachusetts facility lease agreement. Restricted cash is reported as non-current unless the restrictions are expected to be released in the next
twelve months.

Deferred Rent

Deferred rent consists
of the difference between cash payments and the recognition of rent expense on a straight-line basis for the facilities the Company occupies. The Companys leases for its Waltham, Massachusetts facility and its Lexington, Massachusetts facility
provide for fixed increases in minimum annual rental payments. The total amount of rental payments due over each lease term is being charged to rent expense ratably over the life of each lease, respectively.

Convertible Redeemable Preferred Stock

The Company
classified convertible redeemable preferred stock that is redeemable outside of the Companys control outside of permanent equity. The Company recorded such redeemable preferred stock at fair value upon issuance, net of any issuance costs or
discounts, and the carrying value is being increased by periodic accretion to its redemption value up to the date the preferred stock is determined to be redeemable. In the absence of retained earnings these accretion charges are recorded against
additional paid in capital, if any, and then to accumulated deficit.



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Histogenics Corporation

Notes to Consolidated Financial Statements

(In thousands, except share and per share data)



Financial Instruments Indexed to and Potentially Settled in the Companys Common Stock

The Company evaluates all financial instruments issued in connection with its equity offerings when determining the proper accounting treatment for such
instruments in the Companys financial statements. The Company considers a number of generally accepted accounting principles under U.S. GAAP to determine such treatment and evaluates the features of the instrument to determine the appropriate
accounting treatment. The Company utilizes the Probability Weighted Expected Return Method (PWERM), Option Pricing Model (OM) or other appropriate methods to determine the fair value of its derivative financial instruments.
For financial instruments indexed to and potentially settled in the Companys common stock that are determined to be classified as liabilities on the consolidated balance sheet, changes in fair value are recorded as a gain or loss in the
Companys consolidated statement of operations with the corresponding amount recorded as an adjustment to the liability on its consolidated balance sheet.

Revenue Recognition

The Companys revenue has
principally consisted of BioCart product revenue in Israel, collaboration revenue from a license agreement with AT Grade and government grant funding received from the Internal Revenue Service (IRS) as a qualifying therapeutic discovery
project (QTDP) credit pursuant to the Patient Protection and Affordable Care Act. The Companys license and collaboration agreement contains multiple elements, all of which are accounted for as collaboration revenue. The Company
recognizes revenue when all four of the following criteria are met: (1) persuasive evidence that an agreement exists; (2) delivery of the products and/or services has occurred; (3) the selling price is fixed or determinable; and
(4) collectability is reasonably assured. All revenue recognized by the Company for the year ended December 31, 2013 consisted of collaboration revenue and the Company did not recognize any product or grant revenue for the years ended
December 31, 2014 and 2013.

Product Revenue

The Company has generated product revenue through commercial sales of BioCart in Israel. Revenue from sales of BioCart is recognized when the product has been
delivered and all obligations have been satisfied.

Collaboration Revenue

The Company entered into a collaborative arrangement for the exclusive right to produce, use, and market BioCart in Italy. The terms of this agreement included
multiple deliverables by the Company (including license rights, and research and development services) in exchange for consideration to the Company for a combination of diligence milestone payments, minimum royalty payments and royalties for
commercial activity in Italy.

Multiple-deliverable arrangements, such as license and development agreements, are analyzed to determine whether the
deliverables can be separated or whether they must be accounted for as a single unit of accounting. When deliverables are separable, consideration received is allocated to the separate units of accounting based on the relative selling price method
and the appropriate revenue recognition principles are applied to each unit. When the Company determines that an arrangement should be accounted for as a single unit of accounting, it must determine the period over which the performance obligations
will be performed and revenue will be recognized.

The assessment of multiple-deliverable arrangements requires judgment in order to determine the
appropriate unit of accounting, the estimated selling price of each unit of accounting and the point in time that, or period over which, revenue should be recognized.



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Histogenics Corporation

Notes to Consolidated Financial Statements

(In thousands, except share and per share data)



The Company recognizes revenue from milestone payments when earned, provided that (1) the milestone
event is substantive in that it can only be achieved based in whole or in part on either the Companys performance or on the occurrence of a specific outcome resulting from the Companys performance and its achievability was not reasonably
assured at the inception of the agreement; (2) the Company does not have ongoing performance obligations related to the achievement of the milestone; and (3) it would result in the receipt of additional payments. A milestone payment is
considered substantive if all of the following conditions are met: (a) the milestone payment is non-refundable; (b) achievement of the milestone was not reasonably assured at the inception of the arrangement; (c) substantive effort is
involved to achieve the milestone; and (d) the amount of the milestone payment appears reasonable in relation to the effort expended, the other milestones in the arrangement and the related risk associated with the achievement of the milestone.

Collaboration arrangements providing for payments to the Company upon the achievement of research and development milestones generally involve
substantial uncertainty as to whether any such milestone would be achieved. In the event a milestone is considered to be substantive, the Company expects to recognize future payments as revenue in connection with the milestone as it is achieved.
Collaboration arrangements providing for payments to the Company upon the achievement of milestones that are solely contingent upon the performance of a collaborator also involve substantial uncertainty as to whether any such milestone would be
achieved. For such contingent milestones, even if they do not meet the definition of a substantive milestone, since they are based solely upon a collaborators effort, the Company expects to recognize future payments as revenue when earned
under the applicable arrangement, provided that collection is reasonably assured.

Government Grant Revenue

Revenue from government grants is recorded on a gross basis when awarded by the IRS in accordance with the terms of the grant award.

Research and Development Costs

Research and development
costs are charged to expense as incurred. These costs include, but are not limited to: license fees related to the acquisition of in-licensed products; employee-related expenses, including salaries, benefits and travel; expenses incurred under
agreements with contract research organizations and investigative sites that conduct clinical trials and preclinical studies; the cost of acquiring, developing and manufacturing clinical trial materials; facilities, depreciation and other expenses,
which include direct and allocated expenses for rent and maintenance of facilities, insurance and other supplies; and costs associated with preclinical activities and regulatory operations.

Costs for certain development activities, such as clinical trials, are recognized based on an evaluation of the progress to completion of specific tasks using
data such as patient enrollment, clinical site activations, or information provided to the Company by its vendors with respect to their actual costs incurred. Payments for these activities are based on the terms of the individual arrangements, which
may differ from the pattern of costs incurred, and are reflected in the consolidated financial statements as prepaid or accrued research and development expense, as the case may be.

Collaboration Arrangements

Costs reimbursed to a
collaborator for work that it performs are recorded as research and development expenses. If a collaboration arrangement requires reimbursement to the collaborator for research and development expenses, work it performs, or achieving a development
milestone for which a payment is due, the reimbursements or development milestone achievement are recorded as research and development expense.



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Histogenics Corporation

Notes to Consolidated Financial Statements

(In thousands, except share and per share data)



In September 2014, the Company entered into a collaboration agreement with Intrexon Corporation
(Intrexon) for the development and commercialization of allogeneic cell therapeutics for the treatment or repair of damaged articular hyaline cartilage in humans, utilizing Intrexons proprietary technology (the Collaboration
Agreement). Under the terms of the Collaboration Agreement, the Company is responsible for the costs of development and commercialization, with some exceptions. Refer to Note 8, Related Party Convertible Promissory Notes for details and
terms regarding a $10,000 convertible promissory note to Intrexon as part of this agreement, and Note 15, Related Parties for further details on all terms, conditions and exceptions of this collaboration.

License Agreements

Costs associated with licenses of
technology are expensed as incurred and are included in research and development expenses.

Patent Costs

Costs related to filing and pursuing patent applications are recorded as general and administrative expense as incurred since the recoverability of such
expenditures is uncertain.

Stock-Based Compensation

The Company accounts for grants of stock options and restricted stock based on their grant date fair value and recognizes compensation expense over their
vesting period. The Company estimates the fair value of stock options as of the date of grant using the Black-Scholes option pricing model and restricted stock based on the fair value of the underlying common stock as determined by management or the
value of the services provided, whichever is more readily determinable.

Stock-based compensation expense represents the cost of the grant date fair value
of employee stock option grants recognized over the requisite service period of the awards (usually the vesting period) on a straight-line basis, net of estimated forfeitures. The expense is adjusted for actual forfeitures at year end. Stock-based
compensation expense recognized in the consolidated financial statements is based on awards that are ultimately expected to vest.

For stock option grants
with performance-based milestones, the expense is recorded over the remaining service period after the point when the achievement of the milestone is probable or the performance condition has been achieved. For stock option grants with both
performance-based milestones and market conditions, expense is recorded over the derived service period after the point when the achievement of the performance-based milestone is probable or the performance condition has been achieved. The Company
did not issue any performance-based or awards with market conditions from its inception through December 31, 2014.

The Company accounts for stock
options and restricted stock awards to non-employees using the fair value approach. Stock options and restricted stock awards to non-employees are subject to periodic revaluation over their vesting terms.

Income Taxes

The Company accounts for income taxes under
the liability method, which requires the recognition of deferred tax assets and liabilities for the expected future tax consequences of events that have been included in the financial statements. Under this method, deferred tax assets and
liabilities are determined on the basis of the



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Histogenics Corporation

Notes to Consolidated Financial Statements

(In thousands, except share and per share data)



differences between the financial statements and tax basis of assets and liabilities using enacted tax rates in effect for the year in which the differences are expected to reverse. The effect of
a change in tax rates on deferred tax assets and liabilities is recognized in income in the period that includes the enactment date.

The Company
recognizes net deferred tax assets to the extent that the Company believes these assets are more likely than not to be realized. In making such a determination, management considers all available positive and negative evidence, including future
reversals of existing taxable temporary differences, projected future taxable income, tax-planning strategies, and results of recent operations. If management determines that the Company would be able to realize its deferred tax assets in the
future, in excess of its net recorded amount, management would make an adjustment to the deferred tax asset valuation allowance, which would reduce the provision for income taxes.

The Company records uncertain tax positions on the basis of a two-step process whereby (1) management determines whether it is more likely than not that
the tax positions will be sustained on the basis of the technical merits of the position and (2) for those tax positions that meet the more likely than not recognition threshold, management recognizes the largest amount of tax benefit that is
more than 50 percent likely to be realized upon ultimate settlement with the related tax authority. The Company recognizes interest and penalties related to unrecognized tax benefits within income tax expense. Any accrued interest and penalties are
included within the related tax liability.

Earnings (Loss) per Common Share

Earnings (loss) per common share is calculated using the two-class method, which is an earnings allocation formula that determines earnings (loss) per share
for the holders of the Companys common shares and participating securities. All series of preferred stock contain participation rights in any dividend paid by the Company and are deemed to be participating securities. Earnings available to
common stockholders and participating convertible redeemable preferred shares are allocated to each share on an as-converted basis as if all of the earnings for the period had been distributed. The participating securities do not include a
contractual obligation to share in losses of the Company and are not included in the calculation of net loss per share in the periods that have a net loss.

Diluted earnings per share is computed using the more dilutive of (a) the two-class method, or (b) the if-converted method. The Company allocates
earnings first to preferred stockholders based on dividend rights and then to common and preferred stockholders based on ownership interests. The weighted-average number of common shares included in the computation of diluted earnings (loss) gives
effect to all potentially dilutive common equivalent shares, including outstanding stock options, warrants, convertible redeemable preferred stock and the potential issuance of stock upon the conversion of the Companys convertible notes.
Common stock equivalent shares are excluded from the computation of diluted earnings (loss) per share if their effect is antidilutive.

Recently
Adopted Accounting Pronouncements

In June 2014, the FASB issued guidance that eliminates the concept of a development stage entity in its entirety
from GAAP. The guidance is intended to reduce the overall cost and complexity associated with financial reporting for development stage entities without reducing the availability of relevant information. The Board also believes the changes will
simplify the consolidation accounting guidance by removing the differential accounting requirements for development stage entities. As a result of these changes, there no longer will be any accounting



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Histogenics Corporation

Notes to Consolidated Financial Statements

(In thousands, except share and per share data)



or reporting differences in GAAP between development stage entities and other operating entities. The amendments are effective for annual reporting periods beginning after December 15, 2014.
Early application is permitted for any annual reporting period or interim period for which the entitys financial statements have not yet been issued (public business entities) or made available for issuance (other entities). The Companys
adoption of this guidance as of December 31, 2014 eliminated the disclosure of inception to date information from the Companys consolidated financial statements.

In July 2013, the FASB issued guidance that eliminates diversity in practice surrounding the presentation of unrecognized tax benefits when a net operating
loss carryforward, a similar tax loss, or a tax credit carryforward exists. An entity is required to net an unrecognized tax benefit with a deferred tax asset for a net operating loss carryforward, a similar tax loss, or a tax credit carryforward if
the carryforward would be used to settle additional tax due upon disallowance of a tax position. The Companys adoption of this guidance on January 1, 2014 did not have a material impact on the consolidated financial statements.

Recently Issued Accounting Pronouncements

In November
2014, the FASB issued guidance that allows all acquired entities to choose to apply pushdown accounting in their separate financial statements when an acquirer obtains control of them. This guidance is effective immediately. The Company does not
expect that the application of this guidance will have an impact on the presentation of its results of operations, financial position or disclosures.

In
November 2014, the FASB issued guidance to eliminate the existing diversity in practice in accounting for hybrid financial instruments issued in the form of a share. A hybrid financial instrument consists of a host contract into which
one or more derivative terms have been embedded. This guidance requires an entity to consider the terms and features of the entire financial instrument, including the embedded derivative features, in order to determine whether the nature of the host
contract is more akin to debt or to equity. This guidance is effective for fiscal years and interim periods beginning after December 15, 2015, with early adoption permitted. A reporting entity should apply this guidance using a modified
retrospective approach by recording a cumulative-effect adjustment to equity as of the beginning of the annual period of adoption. Retrospective application is permitted to all relevant prior periods. The Company does not expect that the application
of this guidance will have an impact on the presentation of its results of operations, financial position or disclosures.

In August 2014, the FASB issued
guidance that requires management to assess an entitys ability to continue as a going concern every reporting period, and provide certain disclosures if management has substantial doubt about the entitys ability to operate as a
going concern, or an express statement if not, by incorporating and expanding upon certain principles that are currently in U.S. auditing standards. This guidance is effective for the annual period ending after December 15, 2016, and for annual
periods and interim periods thereafter. Early application is permitted. The adoption of this guidance is not expected to have an impact on the Companys financial position or results of operations.

In June 2014, the FASB issued guidance requiring when there is a performance target that affects vesting of equity awards granted and could be achieved after
the requisite service period to be treated as a performance condition. A reporting entity should apply existing guidance on stock-based compensation, as it relates to such awards. This guidance is effective for annual periods and interim periods
within those annual periods beginning after December 15, 2015 with early adoption permitted using either of two methods: (i) prospective to all awards granted or modified after the effective date; or (ii) retrospective to all awards
with performance targets that are outstanding as of the beginning of the earliest annual period presented in the financial statements and to all new or modified awards thereafter, with the cumulative effect of applying this guidance as an adjustment
to the



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Histogenics Corporation

Notes to Consolidated Financial Statements

(In thousands, except share and per share data)



opening retained earnings balance as of the beginning of the earliest annual period presented in the financial statements. The Company has not issued any performance-based or awards with market
conditions from its inception through December 31, 2014. The Companys adoption of this guidance is not expected to have a material impact on the consolidated financial statements.

In May 2014, the FASB issued guidance that affects any entity that either enters into contracts with customers to transfer goods or services or enters into
contracts for the transfer of nonfinancial assets unless those contracts are within the scope of other standards (e.g., insurance contracts or lease contracts). The core principle of the guidance is that an entity should recognize revenue to depict
the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. The amendments are effective for annual reporting periods
beginning after December 15, 2016, including interim periods within that reporting period. Early application is not permitted. The Company has not had any revenue from contracts with customers from its inception through December 31, 2014.
The Companys adoption of this guidance is not expected to have a material impact on the consolidated financial statements.



|3. | EARNINGS (LOSS) PER COMMON SHARE
|-- | --------------------------------

Basic and diluted earnings (loss) per common share are calculated as follows:



|                                                                                             |  |                         |           |   |      |   |         |  
|-------------------------------------------------------------------------------------------- |  | ----------------------- | --------- | - | ---- | - | ------- | -
|                                                                                             |  | Years EndedDecember 31, |          
|                                                                                             |  | 2014                    |           |   | 2013 |  
|Numerator:                                                                                   |  |                         |           |   |      |   |         |  
|Net loss                                                                                     |  | $                       | (22,793   | ) |      | $ | (25,712 | )
|Extinguishment of Series A Preferred Stock (Note 11)                                         |  |                         |          |   |      |   | (28,000 | )
|Extinguishment of Net Sales Distribution Payment Liability redemption provision              |  |                         | 15,803    |   |      |   |        |  
|Adjustment to fair value of Series A-1 Preferred Stock (Note 11)                             |  |                         | (3,520    | ) |      |   |        |  
|Accruals of dividends and accretion to redemption value of preferred stock                   |  |                         |          |   |      |   | (2,291  | )
|                                                                                             |  |                         |           |   |      |   |         |  
|Earnings (loss) attributable to common stockholdersbasic and diluted                        |  | $                       | (10,510   | ) |      | $ | (56,003 | )
|                                                                                             |  |                         |           |   |      |   |         |  
|Denominator:                                                                                 |  |                         |           |   |      |   |         |  
|Weighted-average number of common shares used in earnings (loss) per sharebasic and diluted |  |                         | 1,534,108 |   |      |   | 579,849 |  
|                                                                                             |  |                         |           |   |      |   |         |  
|Earnings (loss) per sharebasic and diluted                                                  |  | $                       | (6.85     | ) |      | $ | (96.58  | )
|                                                                                             |  |                         |           |   |      |   |         |  

The following potentially dilutive securities have been excluded from the computation of diluted weighted-average shares
outstanding, as they would be anti-dilutive (in common stock equivalent shares):



|                                                      |  |                    |         |  |      |  |           | 
|----------------------------------------------------- |  | ------------------ | ------- |  | ---- |  | --------- | 
|                                                      |  | As of December 31, |        
|                                                      |  | 2014               |         |  | 2013 | 
|Convertible redeemable preferred stock and dividends  |  |                    |        |  |      |  | 3,602,918 | 
|Restricted stock and options to purchase common stock |  |                    | 546,176 |  |      |  | 501,146   | 
|Warrants exercisable into common stock                |  |                    | 162,704 |  |      |  | 161,977   | 



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Histogenics Corporation

Notes to Consolidated Financial Statements

(In thousands, except share and per share data)



The Company also had certain warrants and other liabilities outstanding as of December 31, 2013 which
could have obligated the Company and/or its stockholders to issue shares of common stock upon the occurrence of various future events at prices and in amounts that were not determinable until the occurrence of those future events. For the year ended
December 31, 2013, these included the net sales distribution payment liability. Refer to Note 9, Warrants, Other Liability and Net Sales Distribution Payment Liability for additional details. Because the necessary conditions for the
conversion or exercise of these instruments had not been satisfied as of December 31, 2013, the Company has excluded these instruments from the table above and the calculation of diluted net income per share for that period. The necessary
conditions were met upon the closing of the Companys IPO on December 3, 2014 resulting in the net exercise of warrants into 44,531 shares of the Companys common stock and settlement of the Other Liability through the transfer of
shares from the Companys investors. The closing of the Companys IPO also resulted in the conversion of the Companys redeemable preferred stock and dividends into 5,158,407 shares of the Companys common stock. The table above
does not include the preferred stock and warrants of 4,558,483 and 47,898 that were converted and exercised during the year ended December 31, 2014.

The Company issued equity-classified warrants on July 20, 2012 and July 9, 2014 which are immediately exercisable into 161,977 and 6,566 shares of
common stock. The warrants issued on July 20, 2012 are included in the table above for the year ended December 31, 2013, as they would be anti-dilutive for that period. Of the warrants issued on July 20, 2012, 5,839 of the warrant
shares were surrendered. The remaining 156,138 warrants issued on July 20, 2012 remained outstanding as of December 31, 2014 and with the warrants issued on July 9, 2014 are included in the table above for the year ended
December 31, 2014 as they would be anti-dilutive for the period. See Note 10, Non-Recurring Fair Value Measurements, for additional details.



|4. | PREPAID EXPENSES AND OTHER CURRENT ASSETS
|-- | -----------------------------------------

Prepaid expenses and other current assets consisted of the following:



|                                            |  |                    |     |  |      |   |     | 
|------------------------------------------- |  | ------------------ | --- |  | ---- | - | --- | 
|                                            |  | As of December 31, |    
|                                            |  | 2014               |     |  | 2013 |  
|Deposits                                    |  | $                  | 505 |  |      | $ | 290 | 
|Undelivered laboratory and office equipment |  |                    | 78  |  |      |   | 57  | 
|Insurance                                   |  |                    | 67  |  |      |   | 11  | 
|Prepaid rent                                |  |                    |    |  |      |   | 128 | 
|Other current assets                        |  |                    | 146 |  |      |   | 33  | 
|                                            |  |                    |     |  |      |   |     | 
|Prepaid expenses and other current assets   |  | $                  | 796 |  |      | $ | 519 | 
|                                            |  |                    |     |  |      |   |     | 



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Histogenics Corporation

Notes to Consolidated Financial Statements

(In thousands, except share and per share data)



|5. | PROPERTY AND EQUIPMENT
|-- | ----------------------

Property and equipment consisted of the following:



|                               |  |                    |        |   |      |   |        |  
|------------------------------ |  | ------------------ | ------ | - | ---- | - | ------ | -
|                               |  | As of December 31, |       
|                               |  | 2014               |        |   | 2013 |  
|Office equipment               |  | $                  | 467    |   |      | $ | 460    |  
|Laboratory equipment           |  |                    | 2,978  |   |      |   | 1,838  |  
|Leasehold improvements         |  |                    | 7,503  |   |      |   | 5,489  |  
|Construction in progress       |  |                    | 270    |   |      |   | 145    |  
|Software                       |  |                    | 35     |   |      |   |       |  
|                               |  |                    |        |   |      |   |        |  
|Total property and equipment   |  |                    | 11,253 |   |      |   | 7,932  |  
|less: accumulated depreciation |  |                    | (6,375 | ) |      |   | (5,649 | )
|                               |  |                    |        |   |      |   |        |  
|Property and equipment, net    |  | $                  | 4,878  |   |      | $ | 2,283  |  
|                               |  |                    |        |   |      |   |        |  

Depreciation expense related to property and equipment amounted to $726 and $566 for the years ended December 31, 2014
and 2013, respectively.



|6. | ACCRUED EXPENSES
|-- | ----------------

Accrued expenses consisted of the following:



|                                               |  |                    |       |  |      |   |       | 
|---------------------------------------------- |  | ------------------ | ----- |  | ---- | - | ----- | 
|                                               |  | As of December 31, |      
|                                               |  | 2014               |       |  | 2013 |  
|Accrued compensation                           |  | $                  | 814   |  |      | $ | 128   | 
|Accrued professional fees                      |  |                    | 10    |  |      |   | 667   | 
|Accrued clinical expenses                      |  |                    | 384   |  |      |   | 197   | 
|Accrued fees for technology transfer agreement |  |                    | 350   |  |      |   |      | 
|Accrued other                                  |  |                    | 125   |  |      |   | 43    | 
|                                               |  |                    |       |  |      |   |       | 
|Total accrued expenses                         |  | $                  | 1,683 |  |      | $ | 1,035 | 
|                                               |  |                    |       |  |      |   |       | 

On April 15, 2014, the Company entered into a technology transfer agreement with a collagen manufacturer for a
non-exclusive, non-transferable, non-sublicensable perpetual, irrevocable, worldwide, royalty-free right and license to use its proprietary process to make Type 1 bovine collagen. Pursuant to the agreement, the Company paid fees of $400 will pay
additional fees totaling $350. In addition, the Company has agreed to reimburse the collagen manufacturer for mutually agreed upon expenses in connection with such technology. This agreement will remain in effect until either party provides written
notice to terminate the agreement.



|7. | COMMITMENTS AND CONTINGENCIES
|-- | -----------------------------

Operating Leases

The Company leases
office and research facilities in Waltham, Massachusetts under a non-cancellable operating lease, which expires in 2017. Terms of the agreement provide for an initial rent-free period and future rent escalation, and provide that in addition to
minimum lease rental payments, the Company is responsible for a pro-rata share of common area operating expenses. In January 2014, the Company entered into an agreement to sublease an additional facility in Waltham, Massachusetts. The term of the
sublease extends from February 1,



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Histogenics Corporation

Notes to Consolidated Financial Statements

(In thousands, except share and per share data)



2014 through July 30, 2015. In June 2014, the Company entered into a lease agreement to rent a facility in Lexington, Massachusetts. The commencement date of the lease is July 9, 2014
with a term that extends through June 1, 2023. Terms of the lease agreement provide for an initial rent-free period and future rent escalation, and provide that in addition to minimum lease rental payments, the Company is responsible for a
pro-rata share of operating expenses. The Companys wholly-owned subsidiary, ProChon, leases facilities in Woburn, Massachusetts and Israel.

Aggregate minimum annual lease commitments of the Company under its non-cancellable operating leases as of December 31, 2014 are as follows:



|                             |  |   |       | 
|---------------------------- |  | - | ----- | 
|Year Ending December 31,     | 
|2015                         |  |   | 1,532 | 
|2016                         |  |   | 1,541 | 
|2017                         |  |   | 1,534 | 
|2018                         |  |   | 576   | 
|2019                         |  |   | 586   | 
|Thereafter                   |  |   | 2,130 | 
|                             |  |   |       | 
|Total minimum lease payments |  | $ | 7,899 | 
|                             |  |   |       | 

Rent expense under operating lease agreements amounted to approximately $900 and $648 for the years ended December 31,
2014 and 2013, respectively. In addition, the Company maintained a stand-by letter of credit in connection with the Waltham facility lease of $467 at December 31, 2014 and $522 at December 31, 2013. The Company also maintained a stand-by
letter of credit in connection with the Lexington facility lease of $137 at December 31, 2014. These amounts are classified as restricted cash in the consolidated balance sheets.

As an inducement to enter into its Waltham facility lease, the lessor agreed to provide the Company with a construction allowance of up to $3,184 towards the
total cost of tenant improvements. The Company has recorded these costs in the consolidated balance sheet as leasehold improvements, with the corresponding liability as deferred lease incentive. This liability is amortized on a straight-line basis
over the term of the lease as a reduction of rent expense.

As an inducement to enter into its Lexington facility lease, the lessor agreed to provide the
Company with a construction allowance of up to $996 towards the total cost of tenant improvements. A portion of the tenant improvements are under construction as of December 31, 2014, and the Company has recorded these costs as construction in
progress within property and equipment, net, with the corresponding liability in accounts payable. The completed portion are recorded within leasehold improvements and included as a deferred lease incentive liability in the consolidated balance
sheet. Rent expense is recognized on a straight-line basis over the term of the lease and is reduced by the construction allowance.

In April 2012, the
Company entered into an agreement with a third party (Subtenant) to sublease a portion of its leased facility in Waltham (Sublease). The Sublease term extends from April 15, 2012 until March 31, 2015. The Subtenant
has the option to request an extension of the sublease term after March 31, 2014. All improvements made to the space are subject to the terms of the primary lease between the Company and the landlord. Under the terms of the Sublease, the
Company receives $16 from the Subtenant in fixed rent payments per month, as well as an additional variable amount for reimbursement of utilities, operating expenses, and property taxes. These payments are recorded as a reduction of rent expense in
the consolidated statements of operations. The Company expects to receive future rent payments from the Subtenant over the remaining sublease term of approximately $49.



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Histogenics Corporation

Notes to Consolidated Financial Statements

(In thousands, except share and per share data)



License Agreements

From time to time, the Company enters into various licensing agreements whereby the Company may use certain technologies in conjunction with its product
research and development.

Licensing agreements and the Companys commitments under the agreements are as follows:

Hydrogel License

In May 2005, the Company entered into
an exclusive license agreement with Angiotech Pharmaceuticals (US), Inc. for the use of certain patents, patent application, and knowledge related to the manufacture and use of a hydrogel material in conjunction with NeoCart and certain other
products (Hydrogel License Agreement). As of December 31, 2014, the Company has paid an aggregate $3,200 in commercialization milestones under the terms of the Hydrogel License Agreement, which has been expensed to research and
development.

Under the terms of the Hydrogel License Agreement, the Companys future commitments include:



| |  |  | A one-time $3,000 payment upon approval of an eligible product by the United States Food and Drug Administration (FDA); and
| | - |  | -----------------------------------------------------------------------------------------------------------------------------



| |  |  | Royalties in the single digits of the net sales of NeoCart and of certain other future products.
| | - |  | ------------------------------------------------------------------------------------------------

Tissue
Regeneration License

In April 2001, the Company entered into an exclusive license agreement with The Board of Trustees of the Leland
Stanford Junior University (Stanford University) for the use of certain technology to develop, manufacture and sell licensed products in the field of growth and regeneration of cartilage (Tissue Regeneration License
Agreement). The length of the license agreement extends to the expiration date of Stanford Universitys last to expire domestic or foreign patents as set forth in the Tissue Regeneration License Agreement. As of December 31, 2014,
the Company has paid an aggregate $630 in patent reimbursement costs, royalty fees, and commercialization milestone payments under the terms of the Tissue Regeneration License Agreement, which has been recorded to research and development expense in
the consolidated statements of operations.

Under the terms of the Tissue Regeneration License Agreement, the Companys future commitments include:



| |  |  | A one-time $300 payment upon approval of an eligible product by the FDA;
| | - |  | ------------------------------------------------------------------------



| |  |  | An annual minimum non-refundable royalty fee of $10 for the life of the license that may be used to offset up to 50% of each earned royalty described below; and
| | - |  | ----------------------------------------------------------------------------------------------------------------------------------------------------------------



| |  |  | Royalties in the low single digits of net sales.
| | - |  | ------------------------------------------------

Honeycomb License

In March 2013, the Company entered into a license agreement with Koken Co., Ltd. (Koken) for a non-exclusive, non-transferable and
non-sublicensable right to use its know-how related to the process for manufacturing atelocollagen honeycomb sponge materials, which is used in scaffolds (the Honeycomb License Agreement). Pursuant to the Honeycomb License Agreement, the
Company paid Koken a fee in March 2013 for such right. Under the terms of the Honeycomb License Agreement, future commitments will be based on the amount of materials supplied to the Company and may vary from period to period over the term of the
agreement.



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Histogenics Corporation

Notes to Consolidated Financial Statements

(In thousands, except share and per share data)



Plasmid License

In January 2008, the Company entered into an exclusive license agreement with Yeda Research and Development Co., Ltd. (Yeda) for rights relating to
high level expression of heterologous proteins and plasmid p80 BS (the Plasmid License Agreement), which rights are jointly owned by Yeda and the Company. Under the terms of the Plasmid License Agreement, the Company was granted an
exclusive worldwide license to manufacture, use and sell heterologous proteins and plasmid p80 BS.

The Company is required to pay Yeda a yearly,
non-refundable license fee of $2 which is creditable against royalties payable by the Company to Yeda during the one-year period in which such fee was paid. Yeda is entitled a royalty fee of a low single digit percentage rate of net sales of the
licensed products, a low single digit percentage rate of net sales for combination products (meaning the combination of the licensed product with at least one other active ingredient, material or medical device that would have a clinical effect if
administered independently) and a low double digit percentage rate of all of the Companys sublicensing receipts.

Tissue Processor Sub-License

In December 2005, the Company entered into an exclusive agreement to sub-license certain technology from Purpose, Co., which is owned by a stockholder
of the Company (Sub-License Agreement). The original license agreement (Original Agreement) was entered into in August 2001 with Brigham and Womens Hospital, Inc. (Brigham and Womens). The Original
Agreement shall remain in effect for the licensed patents owned by Brigham and Womens unless extended or terminated as provided for in the agreement. The technology is to be used to develop, manufacture, use and sell licensed products that
cultivate cell or tissue development. The Sub-License Agreement extends to the expiration date of the last to expire domestic or foreign patents covered by the agreement. As of December 31, 2014, the Company has paid an aggregate $941 over the
term of the Sub-License Agreement in royalty and sub-license payments under the terms of the Sub-License Agreement, which was recorded to research and development expense in the consolidated statements of operations.

The Sub-License Agreement was amended and restated in June 2012. Under the amended and restated agreement, the Company named Purpose, Co. the sole supplier of
equipment, which the Company uses in its manufacturing processes, and granted Purpose, Co. distribution rights to the Companys products for certain territories. In exchange, Purpose, Co. allowed for the use of its technology (owned or
licensed) and manufactured and serviced exogenous tissue processors for the Company. Under the terms of the agreement, as amended, Purpose, Co. granted the Company (a) exclusive rights to all of Purpose, Co.s technology (owned or
licensed) related to the exogenous tissue processors, (b) continued supply of exogenous tissue processors during the Companys clinical trials, and (c) rights to manufacture the exogenous tissue processors at any location the Company
chooses. In exchange for such consideration, the Company granted Purpose, Co. an exclusive license in Japan for the use of all of the Companys technology and paid $250 to reimburse Purpose, Co. for development costs on a next generation tissue
processer.

Additionally, in conjunction with the amendment of the Sub-License Agreement, the Company granted Purpose, Co. the right to receive a portion
of any consideration received by the Company and/or its stockholders upon a liquidity event, including an IPO or sale of the Company. The consideration payable to Purpose, Co. upon a liquidity event was to be equal to 7.8125% of the net proceeds
received by the Company and/or its stockholders. This consideration would be reduced if the Company required financing in excess of $48,000. This consideration payable to Purpose, Co. was recorded as a liability, which was accounted for at fair
value and re-measured at each reporting date. The initial value of the consideration payable to Purpose, Co. was $3,115, which was recorded to research and development expense during the year ended December 31, 2012.



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Histogenics Corporation

Notes to Consolidated Financial Statements

(In thousands, except share and per share data)



The value of the consideration payable to Purpose, Co., or the Other Liability, was $13,176 at
December 31, 2013 based on an assessment of the probability and likelihood of a near term liquidity event and market conditions. The Company completed its IPO on December 3, 2014 and upon the IPO, the obligation to Purpose, Co. was settled
through the transfer of shares by the Companys investors, per the terms of the agreement. The fair value upon the IPO was determined to be $612 and the change in the fair value of the consideration payable to Purpose, Co. was recorded to
change in fair value of warrant liability and other liability in the consolidated statements of operations. The settlement of the Other Liability upon the IPO was recorded to additional paid-in-capital in the consolidated balance sheet.

In addition to the above, the Companys future commitments under the terms of the Original Agreement and Sub-License Agreement include:



| |  |  | A minimum non-refundable annual royalty fee of $20, for the life of the license;
| | - |  | --------------------------------------------------------------------------------



| |  |  | $200 of milestone payments; and
| | - |  | -------------------------------



| |  |  | Royalties in the low single digits of net sales of a licensed product.
| | - |  | ----------------------------------------------------------------------

The OCS Agreement

In connection with its research and development, the Company received grants in 2004 from the Office of Chief Scientist of the Ministry of Industry and Trade
in Israel (OCS) in the aggregate of $1,100 for funding the fibroblast growth factor (FGF) program. In consideration for this grant, the Company is committed to pay royalties at a rate of 3-5% of the sales of sponsored
products developed using the grant money, up to the amount of the participation payments received plus interest if the sponsored product is produced in Israel. If the manufacturing of the sponsored product takes place outside of Israel, the
royalties can increase up to, but no more than, 300% of grants received, depending on the percentage of the manufacturing of sponsored product that takes place outside of Israel.

Engineering Agreement

The Company entered into an
agreement with a development corporation to purchase a multi-unit bioreactor system, which is expected to allow the Company to add additional manufacturing capacity for its current NeoCart production process. Pursuant to the agreement, the Company
will be required to make payments totaling $567, which are comprised of a deposit of $150 paid in May 2013 with the remaining $417 to be paid upon the Companys acceptance of the delivery of the system, which is expected in May 2015.



|8. | RELATED PARTY CONVERTIBLE PROMISSORY NOTES
|-- | ------------------------------------------

On September 30, 2014, as part of the exclusive channel collaboration agreement with Intrexon (the ECC), the Company issued
a promissory note to Intrexon in the amount of $10,000. The promissory note bore interest at 6.0% per annum. All principal and accrued interest was due and payable on the earliest to occur of the IPO, maturity date of September 30, 2015,
or the closing of a deemed liquidation event. The Company could elect to make payment either in cash or shares of the Companys common stock in the event of an IPO or the closing of a deemed liquidation event. The note was classified in short
term liabilities in the consolidated balance sheet until it was converted with the accrued interest, upon completion of the Companys IPO on December 3, 2014, into 918,206 shares of the Companys common stock.

In November 2014, the Company authorized the issuance of convertible promissory notes to certain of its existing stockholders in a principal amount of up to
$2,500 as part of a bridge financing. The notes were



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Histogenics Corporation

Notes to Consolidated Financial Statements

(In thousands, except share and per share data)



convertible into shares of common stock of the Company, or cash, as specified, upon the earliest to occur of: (i) September 30, 2015; (ii) the IPO; and (iii) the closing of a
corporate transaction, as defined therein. The convertible promissory notes accrued interest at a rate of 6% per annum. On November 6, 2014, $1,000 of notes were issued to, and cash was received from, an existing stockholder. The note was
classified in short term liabilities in the consolidated balance sheet until it was converted, upon completion of the Companys IPO into 90,909 shares of the Companys common stock.



|9. | WARRANTS, OTHER LIABILITY AND NET SALES DISTRIBUTION PAYMENT LIABILITY
|-- | ----------------------------------------------------------------------

Warrant Liability and Other Liability

In connection with the issuance of the Series A Preferred on July 20, 2012, the Company issued Common Stock Warrants (the Common Stock
Warrants) to each participating investor. The Common Stock Warrants were exercisable into an aggregate of 47,828 shares of the Companys common stock upon a defined liquidity event of either a sale of the Company or an IPO. On
December 3, 2014, the Company completed its IPO and the Common Stock Warrants were net settled into 44,531 shares of common stock to satisfy the Other Liability obligation. The fair value of the Common Stock Warrants were classified as a
long-term liability in the accompanying consolidated balance sheets as Warrant Liability in the amount of $636 as of December 31, 2013.

Net Sales Distribution Payment

In connection with the
sale of Series A-1 Preferred, purchasers of Series A Preferred forfeited their right to receive a 2% net sales distribution payment described in Note 11. The 2% net sales distribution payment was replaced with a new royalty agreement under which the
purchasers of Series A-1 Preferred in the Second Closing (Royalty Recipients) are entitled to receive a net sales distribution payment equal to 3% of net sales during the calendar year. At the election of the Royalty Recipients, all or a
portion of the net sales distribution payments were required to be redeemed by the Company. The Royalty Recipients could elect to have each net sales percentage point redeemed for $10,000 payable in cash or the Companys common stock.

On October 14, 2014, the Company entered into an amended and restated royalty agreement with the Royalty Recipients which provided for redemption
provision of the net sales royalty payment to be terminated upon the closing of the Companys IPO (the A&R Royalty Agreement). As the A&R Royalty Agreement was entered into directly as a result of the investors
interest in the Company as stockholders, the change in value of the net sales payment liability of $15,803 was recorded to additional paid-in-capital and was also treated as an addition of earnings attributable to common stockholders in the
calculation of net income (loss) per share. On December 3, 2014, the Company completed its IPO and the redemption provision was terminated.

The fair
value of the net sales distribution payment was classified as a long-term liability in the Companys consolidated balance sheet as the Net Sales Distribution Payment Liability in the amount of $13,100 as of December 31, 2013.

Fair Value Methodology

The warrant liability was
initially recorded on July 20, 2012 at fair value using the Option Pricing Model (OM) to determine the Companys equity value. At each reporting date, the fair value of the warrant liability was re-measured using the PWERM
model. The PWERM model considers the changes in timing, probability, and values of preferred and common stock and other equity-linked securities based upon developments in the Company and the market utilizing managements assumptions and
various future outcomes.



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Histogenics Corporation

Notes to Consolidated Financial Statements

(In thousands, except share and per share data)



The Other Liability was initially recorded at fair value utilizing managements assumptions. The fair
value of the Other Liability was re-measured using PWERM at each reporting date. Changes in the fair value of the warrant liability and the Other Liability have been recorded as change in the fair value of warrant liability and other
liability in the accompanying consolidated statements of operations.

The fair value of the Warrant Liability and Other Liability upon settlement
and satisfaction at the IPO was based on the IPO price of $11.00 per share.

The Net Sales Distribution Payment Liability resulting from the
December 18, 2013 financing was recorded at fair value using the PWERM. At each reporting date, the fair value of the liability was re-measured using the PWERM model.

The table below summarizes the fair value of the Common Stock Warrants, Other Liability and Net Sales Distribution Payment Liability as of December 31,
2013. The Common Stock Warrants, Other Liability and Net Sales Distribution Payment Liability were settled upon the closing of the Companys IPO and there are no remaining balances at December 31, 2014.



|                                         |  |                  |        | 
|---------------------------------------- |  | ---------------- | ------ | 
|                                         |  | Fair Value as of |       
|                                         |  | December 31,2013 |       
|Warrant liability                        |  | $                | 636    | 
|Other Liability                          |  |                  | 13,176 | 
|Net Sales Distribution Payment Liability |  |                  | 13,100 | 
|                                         |  |                  |        | 
|Total fair value                         |  | $                | 26,912 | 
|                                         |  |                  |        | 

The following table provides quantitative information about the fair value measurement, including the range of assumptions and
inputs used in the PWERM valuations of the Common Stock Warrants, Other Liability and Net Sales Distribution Payment Liability:



|                                     |  |                           
|------------------------------------ |  | --------------------------
|                                     |  | ValuationAssumptions as of
|                                     |  | December 31,2013          
|Acquisition scenarios                |  |                           
|Liquidity value                      |  | $50 to $250 million       
|Probability of occurrence            |  | 5.00% to 10.00%           
|Time to event                        |  | 3.5 years                 
|IPO scenarios                        |  |                           
|Pre-money valuation                  |  | $81 to $150 million       
|Probability of occurrence            |  | 5.00% to 38.00%           
|Time to event                        |  | 0.5 to 3.5 years          
|Probability of liquidation scenarios |  | 5%                        
|Discount for lack of marketability   |  | 15%                       



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Histogenics Corporation

Notes to Consolidated Financial Statements

(In thousands, except share and per share data)



Liabilities measured at fair value on a recurring basis are as follows:



|                                         |  |       |        |  |                                        |   |   |                                            |  |   |                                        |  |  |   |        | 
|---------------------------------------- |  | ----- | ------ |  | -------------------------------------- | - | - | ------------------------------------------ |  | - | -------------------------------------- |  |  | - | ------ | 
|Description                              |  | Total |        |  | Quotedprices inactive markets(Level 1) |   |   | Significantotherobservable inputs(Level 2) |  |   | Significantunobservableinputs(Level 3) | 
|December 31, 2013                        |  |       |        |  |                                        |   |   |                                            |  |   |                                        |  |  |   |        | 
|Warrant liability                        |  | $     | 636    |  |                                        | $ |  |                                            |  | $ |                                       |  |  | $ | 636    | 
|Other Liability                          |  |       | 13,176 |  |                                        |   |  |                                            |  |   |                                       |  |  |   | 13,176 | 
|Net Sales Distribution Payment Liability |  |       | 13,100 |  |                                        |   |  |                                            |  |   |                                       |  |  |   | 13,100 | 
|                                         |  |       |        |  |                                        |   |   |                                            |  |   |                                        |  |  |   |        | 
|                                         |  | $     | 26,912 |  |                                        | $ |  |                                            |  | $ |                                       |  |  | $ | 26,912 | 
|                                         |  |       |        |  |                                        |   |   |                                            |  |   |                                        |  |  |   |        | 

The following table provides a reconciliation of all liabilities measured at fair value using Level 3 significant unobservable
inputs:



|                                                                                                        |  |                          |         |   |      |   |        | 
|------------------------------------------------------------------------------------------------------- |  | ------------------------ | ------- | - | ---- | - | ------ | 
|                                                                                                        |  | Years ended December 31, |        
|                                                                                                        |  | 2014                     |         |   | 2013 |  
|Beginning balance                                                                                       |  | $                        | 26,912  |   |      | $ | 4,997  | 
|Issuance of warrants, Other Liability and Net Sales Distribution Payment Liability                      |  |                          |        |   |      |   | 13,100 | 
|Net Sales Distribution Payment Liability                                                                |  |                          |         |   |      |   |        | 
|Change in fair value of warrant liability, Other Liability and Net Sales Distribution Payment Liability |  |                          |         |   |      |   |        | 
|Other Liability and Net Sales Distribution                                                              |  |                          |         |   |      |   |        | 
|Payment Liability                                                                                       |  |                          | (10,007 | ) |      |   | 8,815  | 
|Extinguishment of liabilities                                                                           |  |                          | (16,905 | ) |      |   |       | 
|                                                                                                        |  |                          |         |   |      |   |        | 
|Ending balance                                                                                          |  | $                        |        |   |      | $ | 26,912 | 
|                                                                                                        |  |                          |         |   |      |   |        | 

Significant increases (decreases) in the significant unobservable inputs used in the fair value measurement of the level 3
liabilities would result in a significantly higher (lower) fair value measurement.



|10. | NON-RECURRING FAIR VALUE MEASUREMENTS
|--- | -------------------------------------

Affiliates of an Advisor Warrant

In
connection with the issuance of the Series A Preferred on July 20, 2012, the Company issued a warrant to purchase its common stock to affiliates of an advisor. The warrant provides the holders with the right to purchase an aggregate of 161,977
shares of the Companys common stock at a per share exercise price of $0.01. The warrants are exercisable, in whole or in part, immediately upon issuance and may be exercised on a cashless basis. The warrants expire on the tenth anniversary of
issuance. The fair value of the warrants as of July 20, 2012 was estimated using the OM with the following inputs: (a) risk-free interest rate of 0.22%; (b) implied volatility of the Companys common stock of 99%; and
(c) the expected term to a liquidity event of 1.7 years. The fair value of the warrants as of July 20, 2012 was $117, which was recorded as a reduction to Series A Preferred and a credit to additional paid-in capital. On December 3,
2014, the Company completed its IPO and warrants for 5,839 shares of common stock were surrendered to partially settle the Other Liability and common stock was issued by the Company to Purpose, Co. for the warrant shares surrendered. As of
December 31, 2014, warrants to purchase an aggregate of 156,138 shares of the Companys common stock at an exercise price of $0.01 are outstanding.



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Histogenics Corporation

Notes to Consolidated Financial Statements

(In thousands, except share and per share data)



Equipment Loan

On July 9, 2014, the Company entered into a loan and security agreement with Silicon Valley Bank for a loan to purchase equipment. The amount of the loan
is $1,750 and bears interest at prime plus 2.75% or (6.00% at December 31, 2014) and is payable in equal monthly installments over 36 months beginning six months after the funding date, which ranged from August 2014 to November 2014.

The Company granted Silicon Valley Bank a warrant to purchase 6,566 shares of common stock at a per share exercise price of $7.99. The warrant is exercisable,
in whole or in part, immediately upon issuance and may be exercised on a cashless basis and expires on the tenth anniversary of issuance. The fair value of the warrant as of July 9, 2014 was estimated at $51 with the following inputs:
(a) risk-free interest rate of 2.58%; (b) implied volatility of the Companys common stock of 87%; (c) the expected term of 10 years. The fair value of the warrant was recorded as a debt issuance cost with a corresponding credit
to additional paid-in capital.



|11. | CAPITAL AND CONVERTIBLE REDEEMABLE PREFERRED STOCK
|--- | --------------------------------------------------

On July 20, 2012, the Company entered into a stock purchase agreement with outside investors to issue an aggregate of up to 4,535,357
shares of Series A Preferred at $10.80 per share. The initial round closed on July 20, 2012 and in conjunction with this round the Company issued and sold an aggregate of 2,647,350 shares of Series A Preferred and Common Stock Warrants to
purchase up to 47,828 shares of common stock to the investors, and a warrant to purchase 161,977 shares of common stock to an advisor. Subject to the Companys achievement of certain milestones or the approval of at least a majority of the
holders of the outstanding Series A Preferred shares to waive such milestone conditions, investors also committed to invest an additional $20,648 from the sale of Series A Preferred Stock in a second closing no later than March 2015.

In December 2013, the holders of the outstanding Series A Preferred shares agreed to waive the milestone conditions that were previously required to close the
second round of the financing. On December 18, 2013, the Company entered into an Amended and Restated Series A and A-1 Preferred Stock Purchase Agreement, whereby the Company sold 955,568 shares of Series A-1 Preferred Stock, par value $0.01,
at a price of $10.80 per share and the 3% net sales distribution payment royalty agreement discussed below, resulting in aggregate proceeds of $10,324, half of the $20,648 noted above. Subject to the Companys achievement of certain
milestones or the approval of at least a majority of the holders of the outstanding Series A Preferred and Series A-1 Preferred shares to waive such milestone conditions, investors committed to invest the remaining $10,324 from the sale of Series
A-1 Preferred Stock, which was to close no later than December 31, 2014.

In connection with the closing of the second round on December 18,
2013, holders of Series A Preferred forfeited their right to receive a 2% net sales distribution payment. The 2% net sales distribution payment was replaced with a new, freestanding royalty agreement under which the purchasers of the Series A-1
Preferred in the Second Closing are entitled to receive a net sales distribution payment equal to 3% of net sales during the calendar year, discussed in Note 9. The 2% net sales distribution payment was an embedded right in the Series A Preferred.
The forfeiture of this right resulted in an extinguishment of all 2,647,350 outstanding shares of Series A Preferred.

Immediately following the
extinguishment, 2,647,350 shares of the Series A Preferred were reissued (without the right to the 2% net sales distribution payment) and recorded at their fair value of $42,617 or $16.10 per share. The 955,568 shares of Series A-1 Preferred were
recorded at their fair value of $14,454 or $15.13 per share. The new 3% net sales distribution payment, accounted for as a freestanding financial instrument, has been recorded at its fair value of $13,100 as a long-term liability in the accompanying
consolidated balance sheet. As part of the extinguishment, the Company recorded a reduction of additional paid-in capital of $28,000, representing the



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Histogenics Corporation

Notes to Consolidated Financial Statements

(In thousands, except share and per share data)



difference between the extinguished carrying value of Series A Preferred of $31,910 and the fair value of the net consideration transferred to stockholders of $59,910. The $28,000 is also treated
as a reduction of earnings attributable to common stockholders in the calculation of net income (loss) per share.

In May 2014, the milestone conditions
required to close the third round of the financing had been met. On May 27, 2014, the Company sold 955,565 shares of Series A-1 Preferred Stock, par value $0.01, at a price of $10.80 per share, resulting in aggregate proceeds of $10,324, the
second half of the $20,648 noted above. The Company incurred $10 of issuance costs with this financing. As part of the financing, the Company recorded a reduction of additional-paid-in capital of $3,520, representing the amount to bring the
preferred stock from the net transaction amount of $10,314 to the fair value of $13,834 or $14.48 per share. The $3,520 is also treated as a reduction of earnings attributable to common stockholders in the calculation of net income (loss) per share.

In November 2014, in preparation for the IPO, the Company effected a reverse stock split in which each of the Companys stockholders received one
share of common stock in exchange for 10.804 shares of common stock.

In December 2014, the Company completed its IPO whereby the Company sold 5,909,091
shares of common stock at a price of $11.00 per share for net proceeds of $59,539 after giving effect to underwriting discounts and commissions and offering expenses payable by the Company. In connection with the completion of the IPO, the Company
completed the conversion of all outstanding shares of the Companys convertible redeemable preferred stock into 5,158,407 shares of common stock.

Common Stock

The holders of shares of common stock are
entitled to one vote per share. The holders of shares of common stock are not entitled to receive dividends, unless declared by the Companys board of directors out of legally available funds, if ever.

Reserved for future issuance

The Company has reserved
for future issuance the following number of shares of common stock:



|                                 |  |                    |         | 
|-------------------------------- |  | ------------------ | ------- | 
|                                 |  | As of December 31, |        
|                                 |  | 2014               |        
|Vesting of restricted stock      |  |                    | 8,493   | 
|Options to purchase common stock |  |                    | 537,683 | 
|Common stock warrants (equity)   |  |                    | 162,704 | 
|                                 |  |                    |         | 
|Total                            |  |                    | 708,880 | 
|                                 |  |                    |         | 

Convertible Redeemable Preferred Stock

The Company had issued several series of convertible redeemable preferred stock. From and after the date of issuance of any shares of convertible preferred
stock, dividends accrued at a rate of eight percent (8.0%) per annum payable in cash or shares at the option of the holder, when and as declared by the Companys board of directors. As of December 31, 2014, no dividends had been
declared or paid. The Company had recorded cumulative accrued dividends for the convertible preferred stock of $3,307 as of December 31, 2013. Upon the closing of the IPO on December 3, 2014, all of the outstanding shares of the
Companys convertible redeemable preferred stock and accrued dividends were converted into 5,158,407 shares of its common stock. As of December 31, 2014, the Company does not have any convertible redeemable preferred stock issued or
outstanding. The following describes each series of convertible redeemable preferred stock issued.



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Histogenics Corporation

Notes to Consolidated Financial Statements

(In thousands, except share and per share data)



Series A Convertible Redeemable Preferred Stock

On July 20, 2012, the Company entered into a stock purchase agreement to raise up to $49,000 through the sale of shares of a Series A Preferred, $0.01 par
value per share, at a purchase price per share of $10.80 per share. In conjunction with the closing of this financing, the Company issued and sold an aggregate of 2,647,350 shares of Series A Preferred Stock at a price per share of $10.80 for an
aggregate purchase price of $26.5 million, net of issuance costs (Series A Financing).

Series A-1 Convertible Redeemable Preferred Stock

On December 18, 2013, the Company entered into an Amended and Restated Series A and A-1 Preferred Stock Purchase Agreement (the Stock Purchase
Agreement), whereby the Company sold 955,568 shares of Series A-1 Preferred, par value $0.01, at a price of $10.80 per share, resulting in aggregate proceeds of $10,324. On May 27, 2014, the Company closed the third and final closing
of the Amended and Restated Series A and A-1 Preferred Stock Purchase Agreement as the conditions required for this closing were met. As a result of this third closing, the Company sold 955,565 shares of Series A-1 preferred stock at a purchase
price of $10.80 per share, resulting in aggregate proceeds of $10,324.

General Rights, Preferences and Privileges

The holders of shares of the Series A Preferred and Series A-1 Preferred (collectively, the Preferred Stock) were entitled to the number of votes
equal to the number of whole shares of common stock into which the shares of the applicable series of Preferred Stock held by such holder were convertible on any matter presented to the stockholders of the Company for their action or consideration
at any meeting of stockholders of the Company or by written consent of stockholders in lieu of meetings. Dividends accrued at a rate per annum of 8.0%, payable in cash or in shares at the option of the holder, when and as declared by the board of
directors. In the event of any voluntary or involuntary liquidation, dissolution or winding up of the Company, the holders of the Preferred Stock then outstanding were entitled to be paid out of the assets of the Company available for distribution
to stockholders an amount per share equal to $10.80, plus any accrued but unpaid dividends.

Net Sales Distribution Payment

Within 45 days of the end of each calendar year, the Company shall pay the Royalty Recipients a payment equal to, in the aggregate, 3% of net sales during such
calendar year, which is the Net Sales Distribution Payment. The Net Sales Distribution Payment shall be distributed pro rata based on the percentages set forth in the freestanding royalty agreement entered into in connection with the closing of the
December 18, 2013 financing previously discussed.

Net sales shall mean the gross amount received by the Company, its affiliates and their
sub-licensees for sales of the Companys products less (a) intercompany sales, (b) amounts repaid or credited by reason of actual rejection or return of applicable products, (c) reasonable and customary trade, quantity or cash
rebates or discounts to the extent allowed, (d) amounts for outbound transportation, insurance, handling or shipping, and (e) taxes, customs duties and other governmental charges levied on or measured by sales of products, as adjusted for
rebates and refunds. If any product is sold for non-cash consideration, net sales shall be calculated based on the average non-discounted cash amount charged to independent third parties for the product during the same period in the same country or
based upon the fair value of the product.

As part of the Stock Purchase Agreement, at the election of the Royalty Recipients, all or a portion of
the net sales payments could be redeemed by the Company. The Royalty Recipients could elect to have each net sales



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Histogenics Corporation

Notes to Consolidated Financial Statements

(In thousands, except share and per share data)



percentage point redeemed for $10,000 payable in cash or the Companys common stock. If the Royalty Recipients choose to elect common stock, the fair value per share will be determined
as follows: (a) if the Company was publicly-traded, the average of the 10-day trailing closing price, or (b) if not publicly-traded, the fair market value as determined by board of directors. The Royalty Recipients could exercise their
redemption right any time after January 1, 2017 and prior to January 1, 2019, provided, however, that each election must be at least six months apart.

As noted in Note 9, Warrants, Other Liability, and Net Sales Distribution Payment Liability, on October 14, 2014, the Company and the Royalty
Recipients entered into the A&R Royalty Agreement whereby the Royalty Recipients waived their right to the redemption provision as described above. On December 3, 2014, the Company completed its IPO and the redemption provision was
terminated.



|12. | STOCK-BASED COMPENSATION
|--- | ------------------------

Restricted Stock Awards and Stock Options

The Company adopted the 2012 Equity Incentive Plan, as amended (2012 Plan) in July 2012 pursuant to which 609,389 shares of common stock were
authorized for issuance to employees, officers, directors, consultants and advisors of the Company as of December 31, 2014. Upon the closing of the IPO on December 3, 2014, no further grants will be made under the 2012 Plan as the 2013
Equity Incentive Plan (2013 Plan) replaced the 2012 Plan on this date. The 2012 Plan provided for the grant of incentive stock options, non-statutory stock options, rights to purchase restricted stock, stock appreciation rights, phantom
stock awards and stock units. In connection with the issuance of restricted common stock, the Company maintains a repurchase right and shares of restricted common stock are released from such repurchase right over a period of time of continued
service by the recipient. Recipients of incentive stock options shall be eligible to purchase shares of the Companys common stock at an exercise price equal to no less than the estimated fair value of such stock on the date of grant. Stock
options generally vest 25% on the first anniversary of the original vesting date, with the balance vesting monthly over the remaining three years, unless they contain specific performance and/or market-based vesting provisions. The maximum term of
stock options granted under the 2012 Plan is ten years.

In determining the exercise prices for options granted, the board of directors considered the
fair value of the common stock as of the measurement date. The fair value of the common stock was determined by the board of directors based on a variety of different factors, including valuations prepared by third party valuation specialists,
Companys financial position, the status of development efforts within the Company, the composition and ability of the current scientific and management teams, the current climate in the marketplace, the illiquid nature of the Companys
common stock, arms length sale of the Companys preferred stock, the effect of the rights and preferences of the preferred stockholders, and the prospects of a liquidity event, among others.

2013 Equity Incentive Plan

The Companys board of
directors adopted the 2013 Plan in November 2013 which the stockholders approved in October 2014. Under the 2013 Plan, 518,327 shares of common stock are authorized for issuance to employees, directors, consultants and advisors of the Company as of
December 31, 2014, for which no awards have been granted. The 2013 Plan provides for the grant of incentive stock options, non-statutory stock options, rights to purchase restricted stock, stock appreciation rights and stock units. In
connection with the issuance of restricted common stock, the Company maintains a repurchase right and shares of restricted common stock are released from such repurchase right over a period of time of continued service by the recipient. Recipients
of stock options shall be eligible to purchase shares of the Companys common stock at an exercise price equal to no less than the estimated fair value of such stock on the date of grant. Stock options generally vest 25% on the first



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Histogenics Corporation

Notes to Consolidated Financial Statements

(In thousands, except share and per share data)



anniversary of the original vesting date, with the balance vesting monthly over the remaining three years, unless they contain specific performance and/or market-based vesting provisions. The
maximum term of stock options granted under the 2013 Plan is ten years. The number of shares reserved for issuance under the 2013 Plan will be increased automatically on the first business day of each of our fiscal years during the term of the 2013
Plan, commencing in 2015, by a number equal to the smallest of:(a) 181,414 shares; (b) 3.5% of the number of shares of common stock outstanding on December 31 of the prior year; and (c) the number of shares determined by the
Companys board of directors. To the extent any awards under the 2013 Plan are forfeited, terminate, expire, lapse without the issuance of shares, or if the Company repurchases shares subject to awards under the 2013 Plan, those shares will
again become available for issuance under the 2013 Plan.

2013 Employee Stock Purchase Plan

The Companys board of directors adopted the 2013 Employee Stock Purchase Plan (2013 ESPP) in November 2013 which the stockholders approved in
October 2014. The 2013 ESPP became effective upon the closing of the IPO on December 3, 2014. The Companys 2013 ESPP qualifies under Section 423 of the Internal Revenue Code. Under the 2013 ESPP, 103,665 shares of the Companys
common stock are authorized for issuance to eligible employees. The number of shares reserved for issuance under the 2013 ESPP will automatically be increased on the first business day of each of the Companys fiscal years, commencing in 2015,
by a number equal to the lesser of 51,832 shares; 1% of the shares of common stock outstanding on the last business day of the prior fiscal year; or the number of shares determined by the Companys board of directors. On January 16, 2015,
the Company increased the authorized shares by 51,832, for a total of 155,497 share of the Companys common stock authorized for issuance to eligible employees under the 2013 ESPP. The number of shares reserved under the 2013 ESPP will
automatically be adjusted in the event of a stock split, stock dividend or a reverse stock split (including an adjustment to the per-purchase period share limit). The Companys 2013 ESPP permits each eligible employee to purchase common stock
through payroll deductions.

Stock option activity under the 2012 and 2013 plans is summarized as follows:



|                                                 |  |                  |          |   |                               |   |      |                                                    |  |  |                                       |  |  |   |       | 
|------------------------------------------------ |  | ---------------- | -------- | - | ----------------------------- | - | ---- | -------------------------------------------------- |  |  | ------------------------------------- |  |  | - | ----- | 
|                                                 |  | Numberof Options |          |   | Weighted-AverageExercisePrice |   |      | Weighted-AverageRemainingContractualTerm(in years) |  |  | AggregateIntrinsicValue(in thousands) | 
|Outstanding at December 31, 2013                 |  |                  | 489,351  |   |                               | $ | 3.03 |                                                    |  |  | 9.4                                   |  |  | $ | 2,844 | 
|Granted                                          |  |                  | 305,428  |   |                               |   | 8.29 |                                                    |  |  |                                       |  |  |   |       | 
|Exercised                                        |  |                  | (33,988  | ) |                               |   | 0.76 |                                                    |  |  |                                       |  |  |   |       | 
|Cancelled                                        |  |                  | (223,108 | ) |                               |   | 1.54 |                                                    |  |  |                                       |  |  |   |       | 
|                                                 |  |                  |          |   |                               |   |      |                                                    |  |  |                                       |  |  |   |       | 
|Outstanding at December 31, 2014                 |  |                  | 537,683  |   |                               | $ | 6.19 |                                                    |  |  | 8.9                                   |  |  | $ | 2,488 | 
|                                                 |  |                  |          |   |                               |   |      |                                                    |  |  |                                       |  |  |   |       | 
|Vested and expected to vest at December 31, 2013 |  |                  | 449,485  |   |                               | $ | 2.48 |                                                    |  |  | 9.4                                   |  |  | $ | 2,844 | 
|                                                 |  |                  |          |   |                               |   |      |                                                    |  |  |                                       |  |  |   |       | 
|Vested and expected to vest at December 31, 2014 |  |                  | 451,153  |   |                               | $ | 5.83 |                                                    |  |  | 8.9                                   |  |  | $ | 2,247 | 
|                                                 |  |                  |          |   |                               |   |      |                                                    |  |  |                                       |  |  |   |       | 
|Exercisable at December 31, 2013                 |  |                  | 96,163   |   |                               | $ | 0.76 |                                                    |  |  | 9.0                                   |  |  | $ | 779   | 
|                                                 |  |                  |          |   |                               |   |      |                                                    |  |  |                                       |  |  |   |       | 
|Exercisable at December 31, 2014                 |  |                  | 139,798  |   |                               | $ | 1.84 |                                                    |  |  | 8.1                                   |  |  | $ | 1,239 | 
|                                                 |  |                  |          |   |                               |   |      |                                                    |  |  |                                       |  |  |   |       | 

As of December 31, 2014 and December 31, 2013, the unrecognized compensation cost related to outstanding options was
$2,373 and $1,002, respectively, and is expected to be recognized as expense over approximately 2.67 years and 3.21 years, respectively. The intrinsic value of options exercised during the years ended December 31, 2014 and 2013 was $196 and $1,
respectively.



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Histogenics Corporation

Notes to Consolidated Financial Statements

(In thousands, except share and per share data)



As of December 31, 2014, the weighted average grant date fair value of vested options was $1.60 and the
weighted average grant date fair value of shares outstanding was $5.02.

Additional information about the Companys stock option activity is as
follows:



|                                                                                           |  |                          |      |  |      |   |      | 
|------------------------------------------------------------------------------------------ |  | ------------------------ | ---- |  | ---- | - | ---- | 
|                                                                                           |  | Years Ended December 31, |     
|                                                                                           |  | 2014                     |      |  | 2013 |  
|Weighted-average grant date fair value per share of employee option grants within the year |  | $                        | 6.70 |  |      | $ | 2.48 | 
|Cash received upon exercise of options                                                     |  |                          | 26   |  |      |   | 2    | 

Restricted stock awards under the 2012 and 2013 plans are summarized as follows:



|                               |  |                 |        |   |                                      |   |      | 
|------------------------------ |  | --------------- | ------ | - | ------------------------------------ | - | ---- | 
|                               |  | Number ofShares |        |   | Weighted-AverageGrant Date FairValue |  
|Unvested at December 31, 2013  |  |                 | 11,795 |   |                                      | $ | 1.08 | 
|Sale of restricted stock       |  |                 |       |   |                                      |   |     | 
|Vesting of restricted stock    |  |                 | (3,302 | ) |                                      |   | 1.00 | 
|Repurchase of restricted stock |  |                 |       |   |                                      |   |     | 
|                               |  |                 |        |   |                                      |   |      | 
|Unvested at December 31, 2014  |  |                 | 8,493  |   |                                      | $ | 1.04 | 
|                               |  |                 |        |   |                                      |   |      | 

As of December 31, 2014 and December 31, 2013, the unrecognized compensation cost related to restricted stock awards
was $7 and $14, respectively, and is expected to be recognized as expense over approximately 2.15 years and 3.14 years, respectively.

Stock-Based
Compensation Expense

The Company granted stock options to employees for the years ended December 31, 2014 and 2013. The Company estimates the
fair value of stock options as of the date of grant using the Black-Scholes option pricing model and restricted stock based on the fair value of the award. Stock options and restricted stock issued to non-board member, non-employees are accounted
for using the fair value approach and are subject to periodic revaluation over their vesting terms.

For all periods from inception to date, stock-based
compensation for all options granted and restricted stock awards are classified as general and administrative expense. Stock compensation expense amounted to $547 and $158 for the years ended December 31, 2014 and 2013, respectively.

Stock-based compensation by award type is as follows:



|                                       |  |                          |     |  |      |   |     | 
|-------------------------------------- |  | ------------------------ | --- |  | ---- | - | --- | 
|                                       |  | Years Ended December 31, |    
|                                       |  | 2014                     |     |  | 2013 |  
|Stock options                          |  | $                        | 544 |  |      | $ | 155 | 
|Restricted stock                       |  |                          | 3   |  |      |   | 3   | 
|                                       |  |                          |     |  |      |   |     | 
|Total stock-based compensation expense |  | $                        | 547 |  |      | $ | 158 | 
|                                       |  |                          |     |  |      |   |     | 



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Histogenics Corporation

Notes to Consolidated Financial Statements

(In thousands, except share and per share data)



The weighted-average assumptions used in the Black-Scholes option pricing model to determine the fair value
of the employee stock option grants were as follows:



|                         |  |                          |       |   |      |  |      |  
|------------------------ |  | ------------------------ | ----- | - | ---- |  | ---- | -
|                         |  | Years ended December 31, |      
|                         |  | 2014                     |       |   | 2013 | 
|Risk-free interest rate  |  |                          | 1.83  | % |      |  | 1.01 | %
|Expected volatility      |  |                          | 104.5 | % |      |  | 87.9 | %
|Expected term (in years) |  |                          | 6.08  |   |      |  | 5.36 |  
|Expected dividend yield  |  |                          | 0.0   | % |      |  | 0.0  | %

The weighted-average assumptions used in the Black-Scholes option pricing model to determine the fair value of the
non-employee stock option grants were as follows:



|                         |  |                          |      |   |      |  |       |  
|------------------------ |  | ------------------------ | ---- | - | ---- |  | ----- | -
|                         |  | Years ended December 31, |     
|                         |  | 2014                     |      |   | 2013 | 
|Risk-free interest rate  |  |                          | 0.89 | % |      |  | 0.23  | %
|Expected volatility      |  |                          | 99.4 | % |      |  | 145.2 | %
|Expected term (in years) |  |                          | 2.47 |   |      |  | 0.98  |  
|Expected dividend yield  |  |                          | 0.0  | % |      |  | 0.0   | %

Risk-free Interest Rate. The risk-free interest rate assumption is based on observed interest rates appropriate
for the expected term of the stock option grants.

Expected Volatility. Due to the Companys limited operating history and lack of
company-specific historical or implied volatility, the expected volatility assumption is based on historical volatilities of a peer group of similar companies whose share prices are publicly available. The peer group was developed based on companies
in the biotechnology and medical device industries.

Expected Term. The expected term represents the period of time that options are
expected to be outstanding. Because the Company does not have historical exercise behavior, through December 31, 2014 it determined the expected life assumption using the simplified method, which is an average of the contractual term of the
option and its vesting period. In 2013, some of the stock option grants were in-the-money, based on the retrospective fair value determinations, so the Company determined the expected life assumption using a risk-adjusted method, which adjusts the
average of the contractual term of the option and its vesting period for risk, reducing the expected life.

Expected Dividend Yield. The
expected dividend yield assumption is based on the fact that the Company has never paid cash dividends and has no present intention to pay cash dividends.



|13. | INCOME TAXES
|--- | ------------

For the years ended December 31, 2014 and 2013, the Company did not record a current or deferred income tax expense or benefit due to
current and historical losses incurred by the Company.



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Histogenics Corporation

Notes to Consolidated Financial Statements

(In thousands, except share and per share data)



The components of loss before income taxes were as follows:



|        |  |                    |         |   |      |   |         |  
|------- |  | ------------------ | ------- | - | ---- | - | ------- | -
|        |  | As of December 31, |        
|        |  | 2014               |         |   | 2013 |  
|U.S.    |  | $                  | (22,240 | ) |      | $ | (24,930 | )
|Foreign |  |                    | (553    | ) |      |   | (782    | )
|        |  |                    |         |   |      |   |         |  
|Total   |  | $                  | (22,793 | ) |      | $ | (25,712 | )
|        |  |                    |         |   |      |   |         |  

A reconciliation of income tax expense (benefit) computed at the statutory federal income tax rate to income taxes as
reflected in the financial statements is as follows:



|                                                       |  |                    |       |    |      |  |       |   
|------------------------------------------------------ |  | ------------------ | ----- | -- | ---- |  | ----- | --
|                                                       |  | As of December 31, |      
|                                                       |  | 2014               |       |    | 2013 | 
|Federal income tax (benefit) at statutory rate         |  |                    | 34.0  | %  |      |  | 34.0  | % 
|(Increase) decrease income tax benefit resulting from: |  |                    |       |    |      |  |       |   
|Permanent differences                                  |  |                    | (4.8  | %) |      |  | (0.9  | %)
|Change in valuation allowance                          |  |                    | (29.2 | %) |      |  | (32.8 | %)
|Other                                                  |  |                    | 0.0   | %  |      |  | (0.3  | %)
|                                                       |  |                    |       |    |      |  |       |   
|Income tax expense (benefit)                           |  |                    | 0.0   | %  |      |  | 0.0   | % 
|                                                       |  |                    |       |    |      |  |       |   

Deferred taxes are recognized for temporary differences between the basis of assets and liabilities for financial statement
and income tax purposes. The significant components of the Companys deferred tax assets and liabilities are comprised of the following:



|                                               |  |                    |         |   |      |   |         |  
|---------------------------------------------- |  | ------------------ | ------- | - | ---- | - | ------- | -
|                                               |  | As of December 31, |        
|                                               |  | 2014               |         |   | 2013 |  
|Deferred tax assets:                           |  |                    |         |   |      |   |         |  
|Net operating loss carryforwards               |  | $                  | 18,933  |   |      | $ | 13,369  |  
|Depreciation and amortization                  |  |                    | 7,235   |   |      |   | 2,926   |  
|Capitalized license agreement                  |  |                    |        |   |      |   | 221     |  
|Accrued expenses                               |  |                    | 698     |   |      |   | 5,346   |  
|Capitalized start-up costs                     |  |                    | 7,276   |   |      |   | 5,576   |  
|Capitalized R&D                                |  |                    | 27      |   |      |   | 155     |  
|Other                                          |  |                    |        |   |      |   | 39      |  
|                                               |  |                    |         |   |      |   |         |  
|Deferred tax assets before valuation allowance |  |                    | 34,169  |   |      |   | 27,632  |  
|Valuation allowance                            |  |                    | (31,966 | ) |      |   | (24,265 | )
|                                               |  |                    |         |   |      |   |         |  
|                                               |  |                    | 2,203   |   |      |   | 3,367   |  
|                                               |  |                   
|Deferred tax liabilities                       |  |                    |         |   |      |   |         |  
|IPR&D                                          |  |                    | (121    | ) |      |   | (144    | )
|Change in accounting method                    |  |                    | (2,149  | ) |      |   | (3,223  | )
|Other                                          |  |                    | 67      |   |      |   |        |  
|                                               |  |                    |         |   |      |   |         |  
|                                               |  |                    | (2,203  | ) |      |   | (3,367  | )
|                                               |  |                    |         |   |      |   |         |  
|Net deferred tax assets                        |  | $                  |        |   |      | $ |        |  
|                                               |  |                    |         |   |      |   |         |  



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Histogenics Corporation

Notes to Consolidated Financial Statements

(In thousands, except share and per share data)



The Company has evaluated the positive and negative evidence bearing upon the realizability of its deferred
tax assets. As of December 31, 2014 and 2013, based on the Companys history of operating losses, the Company has concluded that it is not more likely than not that the benefit of its deferred tax assets will be realized. Accordingly, the
Company has provided a full valuation allowance for deferred tax assets as of December 31, 2014 and 2013. The valuation allowance increased $7,701 during the year ended December 31, 2014, due primarily to net operating losses generated and
capitalized expenses. The valuation allowance increased by $9,961 during the year ended December 31, 2013, due primarily to net operating losses generated and capitalized expenses.

The Company has recorded a current net deferred tax liability of $651 and a noncurrent net deferred tax asset of $651 on its consolidated balance sheet as of
December 31, 2014, and a current net deferred tax liability of $1,058 and a noncurrent net deferred tax asset of $1,058 as of December 31, 2013. The classification of deferred tax assets and liabilities is primarily related to the timing
of the reversal of the deferred tax liability related to a change of accounting method in 2013.

As of December 31, 2014 and 2013, the Company had
U.S. federal NOL carryforwards of $31,230 and $17,116, respectively, which may be available to offset future income tax liabilities and expire at various dates through 2034. As of December 31, 2014 and 2013, the Company also had U.S. state NOL
carryforwards of $31,176 and $17,078, respectively, which may be available to offset future income tax liabilities and expire at various dates through 2034. At December 31, 2014 and 2013, the Company also had $25,166 and $26,586, respectively,
of foreign NOL carryforwards which may be available to offset future income tax liabilities, which carryforwards do not expire.

Utilization of the NOL
and research and development credit carryforwards may be subject to a substantial annual limitation due to ownership change limitations that have occurred or that could occur in the future, as required by Section 382 and Section 383 of the
Code, as well as similar state and foreign provisions. These ownership changes may limit the amount of NOL and research and development credit carryforwards that can be utilized annually to offset future taxable income and tax, respectively. In
general, an ownership change as defined by Section 382 of the Code results from a transaction or series of transactions over a three-year period resulting in an ownership change of more than 50 percentage points of the outstanding
stock of a company by certain stockholders. The Company has completed a study to assess whether an ownership change has occurred or whether there have been multiple ownership changes since its formation. The results of this study indicated that the
Company experienced ownership changes as defined by Section 382 of the Code. The Company has not recorded NOLs that, as a result of these restrictions, will expire unused. Accordingly, the Company has recorded NOL carryforwards net of these
limitations, which are approximately $3,872, $30,471, $36,726, $49,655 and $47,170 in 2010, 2011, 2012, 2013 and 2014 respectively.

The changes in the
Companys unrecognized tax benefits are summarized as follows:



|                                                      |  |                    |      |   |      |   |        |  
|----------------------------------------------------- |  | ------------------ | ---- | - | ---- | - | ------ | -
|                                                      |  | As of December 31, |     
|                                                      |  | 2014               |      |   | 2013 |  
|Unrecognized tax benefit, beginning of year           |  | $                  | 935  |   |      | $ | 5,577  |  
|Increase (decrease) related to current year positions |  |                    | (124 | ) |      |   | (46    | )
|Settlements                                           |  |                    |     |   |      |   | (4,596 | )
|                                                      |  |                    |      |   |      |   |        |  
|Unrecognized tax benefit, end of year                 |  | $                  | 811  |   |      | $ | 935    |  
|                                                      |  |                    |      |   |      |   |        |  



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Histogenics Corporation

Notes to Consolidated Financial Statements

(In thousands, except share and per share data)



As of December 31, 2014 and 2013, the total amount of unrecognized tax benefits was $811 and $935,
respectively. The uncertain tax positions giving rise to the unrecognized tax benefits relate primarily to methods of accounting, used in the Companys tax returns, which accelerated certain deductions for federal income tax purposes. The
reversal of the unrecognized tax benefits would not have any impact on effective tax rates in future periods and are not expected to create cash tax liabilities upon settlement due to the Companys ability to utilize both pre-change and
post-change NOLs. The Company believes that it is reasonably possible that $124 of its unrecognized tax benefits may be recognized by the end of 2015.

The Company will recognize interest and penalties related to uncertain tax positions in income tax expense. As of December 31, 2014 and 2013, the Company
had no accrued interest or penalties related to uncertain tax positions and no amounts have been recognized in the Companys consolidated statements of operations.

The Company files income tax returns in the United States, and various state and foreign jurisdictions. The federal, state and foreign income tax returns are
generally subject to tax examinations for the tax years ended December 31, 2011 through December 31, 2014. To the extent the Company has tax attribute carryforwards, the tax years in which the attribute was generated may still be adjusted
upon examination by the Internal Revenue Service, state or foreign tax authorities to the extent utilized in a future period.



|14. | EMPLOYEE BENEFITS
|--- | -----------------

The Company has a defined contribution 401(k) plan for employees who are at least 21 years of age. Employees are eligible to participate in
the plan beginning on the first day of the calendar quarter following their date of hire. Under the terms of the plan, employees may make voluntary contributions as a percent of compensation. No matching contributions have been made by the Company
since the adoption of the 401(k) plan.



|15. | RELATED PARTIES
|--- | ---------------

Intrexon

In September 2014, the
Company entered into a collaboration agreement with Intrexon for the development and commercialization of allogeneic cell therapeutics for the treatment or repair of damaged articular hyaline cartilage in humans, utilizing Intrexons
proprietary technology. The term of the Collaboration Agreement commences upon the effective date, September 30, 2014, and continues until either written notice of termination is given by the Company within ninety days, or if either party
creates a material breach that cannot be remedied within sixty days.

Under the terms of the Collaboration Agreement, the Company is solely responsible
for the costs of development and commercialization with the following exceptions: (i) the establishment of certain manufacturing capabilities and facilities; (ii) the cost of basic research related to Intrexons proprietary technology
outside of costs related to the collaboration products; (iii) payments related to supplemental in-licensed third party IP; (iv) costs of filing, prosecution and maintenance of Intrexon patents; and (v) any other costs mutually agreed
upon as being the responsibility of Intrexon. As consideration, the Company paid Intrexon an up-front fee of $10,000 in the form of a convertible promissory note as an access fee for commercial license rights to the Intrexon IP granted in the
Collaboration Agreement, and will pay commercialization milestones and sales milestones as achieved. Refer to Note 8, Related Party Convertible Promissory Notes for further details on the $10,000 promissory note the Company issued to
Intrexon. The commercialization milestone payments are payable in cash or shares of the Companys common stock at the option of the Company, and in the event the Company is sold prior to making any of these milestone payments and the
Collaboration Agreement is transferred in the sale, the milestone



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Histogenics Corporation

Notes to Consolidated Financial Statements

(In thousands, except share and per share data)



payments would be payable in cash upon the first instance of each milestone. Finally, the Company is required to make royalty payments in the low double digits of the aggregated gross profit
arising from the sale of collaboration products.

The amounts payable upon milestone events are as follows:



| |  |  | $500 within 30 days of the first instance of the achievement of the Investigational New Drug (IND) Filing Milestone Event;
| | - |  | ----------------------------------------------------------------------------------------------------------------------------



| |  |  | $2,500 within 30 days of the first instance of the achievement of the IND Acceptance Milestone Event;
| | - |  | -----------------------------------------------------------------------------------------------------



| |  |  | $3,000 within 30 days of the first instance of the achievement of the Phase III Milestone Event;
| | - |  | ------------------------------------------------------------------------------------------------



| |  |  | $5,000 within 30 days of the first instance of the achievement of the Approval Milestone Event; and
| | - |  | ---------------------------------------------------------------------------------------------------



| |  |  | $1,000 within 30 days of each instance of the achievement of the Approval Amendment Milestone Event.
| | - |  | ----------------------------------------------------------------------------------------------------

The
cumulative sales milestones from the sale of products developed under the ECC are as follows:



| |  |  | $5,000 within 30 days of the first instance that cumulative net sales reach $300,000;
| | - |  | -------------------------------------------------------------------------------------



| |  |  | $7,500 within 30 days of the first instance that cumulative net sales reach $650,000; and
| | - |  | -----------------------------------------------------------------------------------------



| |  |  | $10,000 within 30 days of the first instance that cumulative net sales reach $1,000,000.
| | - |  | ----------------------------------------------------------------------------------------

As part of the
Collaboration Agreement, Intrexon made an equity purchase commitment to participate in a qualified financing, as defined therein, and will purchase $15,000 worth of the Companys common stock as part of, or in connection with the qualified
financing.

On December 3, 2014, the Company completed its IPO and the $10,000 promissory note to Intexon and accrued interest were converted into
918,206 shares of the Companys common stock. In addition, Intrexon participated in the IPO purchasing $19,496 worth of the Companys common stock, or 1,772,364 shares.

Purpose, Co.

In June 2012, the Company entered into an
agreement with Purpose, Co. to amend its previous agreements. In the previous agreements, Purpose, Co. granted the Company a perpetual license to its patents related to its exogenous tissue processor which is used in the development of the
Companys products. In exchange, the Company granted Purpose, Co. a perpetual license to all of the Companys biotechnology and biomaterial for use in Japan. The agreement provides for Purpose, Co. to manufacture and sell machinery to the
Company for cost until the Companys products become commercially viable. The Company has also agreed to pay royalties on any third-party revenue generated using Purpose, Co.s licensed technology.

Under the June 2012 amendment, the Company received exclusive rights to all of Purpose, Co.s technology related to the exogenous tissue processor,
continued supply of exogenous tissue processors during the Companys clinical trials, and rights to manufacture the exogenous tissue processors at any location the Company chooses. In exchange for such consideration, the Company named Purpose,
Co. the sole manufacturer of equipment and also clarified the geographic territories of the exclusive license that Purpose Co. was granted for use of the Companys technology. Also, the Company agreed to reimburse Purpose, Co. for $250 of
development costs on a next generation tissue processer. Refer to the discussion under Note 7, Tissue Processor Sub-License.



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Histogenics Corporation

Notes to Consolidated Financial Statements

(In thousands, except share and per share data)



The amounts that have been paid to Purpose, Co. under this agreement were $173 and $154 for the years ended
December 31, 2014 and 2013, respectively.



|16. | SUBSEQUENT EVENTS
|--- | -----------------

The Company has completed an evaluation of all subsequent events through March 27, 2015, the date these consolidated financial statements
are available to be issued.

Overallotment

In
January 2015, the underwriters exercised a portion of their overallotment option and purchased an additional 465,000 shares of the Companys common stock at $11.00 per share. As a result, the Company received an additional $4,757 in net
proceeds after underwriters discounts and commissions of $358.



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EXHIBIT INDEX



|        |  |                                                                                                                                                                                                                                                                   
|------- |  | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|Exhibit |  | Description                                                                                                                                                                                                                                                       
|        | 
|3.1     |  | Sixth Amended and Restated Certificate of Incorporation (filed as Exhibit 3.1 to the Registrants Current Report on Form 8-K as filed on December 8, 2014, and incorporated herein by reference)                                                                  
|        | 
|3.2     |  | Amended and Restated Bylaws (filed as Exhibit 3.2 to the Registrants Current Report on Form 8-K as filed on December 8, 2014, and incorporated herein by reference)                                                                                              
|        | 
|4.1     |  | Specimen stock certificate evidencing the shares of common stock (filed as Exhibit 4.1 to Amendment No. 3 to the Registrants Registration Statement on Form S-1 (SEC File
No. 333-199202), as filed on November 26, 2014, and incorporated herein by reference)  
|        | 
|4.2     |  | Second Amended and Restated Investors Rights Agreement dated as of December 18, 2013 (filed as Exhibit 4.2 to the Registrants Registration Statement on Form S-1 (SEC File No. 333-199202), as filed on October 7, 2014, and
incorporated herein by reference)  
|        | 
|4.3     |  | Second Amended and Restated Stockholders Agreement dated as of December 18, 2013 (filed as Exhibit 4.3 to the Registrants Registration Statement on Form S-1 (SEC File No. 333-199202), as filed on October 7, 2014, and
incorporated herein by reference)      
|        | 
|4.4     |  | Warrant to Purchase Common Stock dated July 9, 2014 issued to Silicon Valley Bank (filed as Exhibit 4.4 to the Registrants Registration Statement on Form S-1 (SEC File No. 333-199202), as filed on October 7, 2014, and
incorporated herein by reference)      
|        | 
|4.5     |  | Amended and Restated Royalty Agreement dated as of October 14, 2014 (filed as Exhibit 4.5 to Amendment No. 1 to the Registrants Registration Statement on Form S-1 (SEC File
No. 333-199202), as filed on November 7, 2014, and incorporated herein by reference)
|        | 
|10.1    |  | Form of Indemnity Agreement for directors and officers (filed as Exhibit 10.1 to the Registrants Registration Statement on Form S-1 (SEC File No. 333-199202), as filed on October 7, 2014, and incorporated herein by
reference)                                
|        | 
|10.2+   |  | Employment Agreement dated June 5, 2013 between the Registrant and Peter Greenleaf (filed as Exhibit 10.2 to the Registrants Registration Statement on Form S-1 (SEC File No. 333-199202), as filed on October 7, 2014, and
incorporated herein by reference)    
|        | 
|10.3+   |  | Offer letter effective as of May 15, 2011 between the Registrant and Kevin McArdle (filed as Exhibit 10.3 to the Registrants Registration Statement on Form S-1 (SEC File No. 333-199202), as filed on October 7, 2014,
and incorporated herein by reference)    
|        | 
|10.4+   |  | Offer letter dated September 23, 2013, between the Registrant and Nancy Lynch, M.D. (filed as Exhibit 10.4 to the Registrants Registration Statement on Form S-1 (SEC File No. 333-199202), as filed on October 7, 2014, and
incorporated herein by reference)   
|        | 
|10.5+   |  | Offer letter effective as of August 5, 2013 between the Registrant and Stephen Kennedy (filed as Exhibit 10.5 to the Registrants Registration Statement on Form S-1 (SEC File No. 333-199202), as filed on October 7, 2014,
and incorporated herein by reference)
|        | 
|10.6+   |  | 2012 Equity Incentive Plan, as amended, and form of option agreement thereunder (filed as Exhibit 10.6 to the Registrants Registration Statement on Form S-1 (SEC File No. 333-199202), as filed on October 7, 2014, and
incorporated herein by reference)       
|        | 
|10.7+   |  | 2013 Equity Incentive Plan (filed as Exhibit 10.7 to Amendment No. 2 to the Registrants Registration Statement on Form S-1 (SEC File No. 333-199202), as filed on November 14, 2014, and incorporated herein by
reference)                                       
|        | 
|10.8+   |  | 2013 Employee Stock Purchase Plan (filed as Exhibit 10.8 to Amendment No. 2 to the Registrants Registration Statement on Form S-1 (SEC File No. 333-199202), as filed on November 14, 2014, and incorporated herein by
reference)                                



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|        |  |                                                                                                                                                                                                                                                                                                                                                                            
|------- |  | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|Exhibit |  | Description                                                                                                                                                                                                                                                                                                                                                                
|        | 
|10.9+   |  | Independent Director Compensation Policy (filed as Exhibit 10.9 to the Registrants Registration Statement on Form S-1 (SEC File No. 333-199202), as filed on October 7, 2014, and incorporated herein by reference)                                                                                                                                                       
|        | 
|10.10  |  | License Agreement dated as of May 12, 2005 among the Registrant and Angiotech Pharmaceuticals (US), Inc. and Angiodevice International GmbH (filed as Exhibit 10.10 to the Registrants Registration Statement on Form S-1
(SEC File No. 333-199202), as filed on October 7, 2014, and incorporated herein by reference)                                                   
|        | 
|10.11  |  | Amendment to License Agreement dated as of August 31, 2007 among the Registrant and Angiotech Pharmaceuticals (US), Inc. and Angiodevice International GmbH (filed as Exhibit 10.11 to the Registrants Registration Statement
on Form S-1 (SEC File No. 333-199202), as filed on October 7, 2014, and incorporated herein by reference)                                   
|        | 
|10.12  |  | Second Amendment to License Agreement dated as of January 1, 2008 among the Registrant and Angiotech Pharmaceuticals (US), Inc. and Angiodevice International GmbH (filed as Exhibit 10.12 to the Registrants Registration
Statement on Form S-1 (SEC File No. 333-199202), as filed on October 7, 2014, and incorporated herein by reference)                            
|        | 
|10.13  |  | Third Amendment to License Agreement dated as of April 15, 2008 among the Registrant and Angiotech Pharmaceuticals (US), Inc. and Angiodevice International GmbH (filed as Exhibit 10.13 to the Registrants Registration
Statement on Form S-1 (SEC File No. 333-199202), as filed on October 7, 2014, and incorporated herein by reference)                              
|        | 
|10.14  |  | Fourth Amendment to License Agreement dated as of November 1, 2008 among the Registrant and Angiotech Pharmaceuticals (US), Inc. and Angiodevice International GmbH (filed as Exhibit 10.14 to the Registrants Registration
Statement on Form S-1 (SEC File No. 333-199202), as filed on October 7, 2014, and incorporated herein by reference)                           
|        | 
|10.15  |  | Fifth Amendment to License Agreement dated as of August 6, 2010 among the Registrant and Angiotech Pharmaceuticals (US), Inc. and Angiodevice International GmbH (filed as Exhibit 10.15 to the Registrants Registration
Statement on Form S-1 (SEC File No. 333-199202), as filed on October 7, 2014, and incorporated herein by reference)                              
|        | 
|10.16  |  | Reinstatement Agreement and Sixth Amendment to License Agreement dated as of February 8, 2011 among the Registrant and Angiotech Pharmaceuticals (US), Inc. and Angiodevice International GmbH (filed as Exhibit 10.16 to the
Registrants Registration Statement on Form S-1 (SEC File No. 333-199202), as filed on October 7, 2014, and incorporated herein by reference)
|        | 
|10.17  |  | Seventh Amendment to License Agreement dated as of March 31, 2011 among the Registrant and Angiotech Pharmaceuticals (US), Inc. and Angiodevice International GmbH (filed as Exhibit 10.17 to the Registrants Registration
Statement on Form S-1 (SEC File No. 333-199202), as filed on October 7, 2014, and incorporated herein by reference)                            
|        | 
|10.18 |  | Eighth Amendment to License Agreement dated as of June 29, 2012 among the Registrant and Angiotech Pharmaceuticals (US), Inc. and Angiodevice International GmbH (filed as Exhibit 10.18 to the Registrants Registration
Statement on Form S-1 (SEC File No. 333-199202), as filed on October 7, 2014, and incorporated herein by reference)                              
|        | 
|10.19  |  | Paid-up License Agreement dated as of March 6, 2013 between the Registrant and Koken Co., Ltd. (filed as Exhibit 10.19 to the Registrants Registration Statement on Form S-1 (SEC File
No. 333-199202), as filed on October 7, 2014, and incorporated herein by reference)                                                                                                
|        | 
|10.20  |  | Agreement dated as of June 22, 2012 between the Registrant and Purpose Co., Ltd. f/k/a Takagi Sangyo Co. Ltd. and f/k/a Takagi Industrial Co., Ltd. (filed as Exhibit 10.20 to the Registrants Registration Statement on Form
S-1 (SEC File No. 333-199202), as filed on October 7, 2014, and incorporated herein by reference)                                           



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|        |  |                                                                                                                                                                                                                                                                                                                                                               
|------- |  | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|Exhibit |  | Description                                                                                                                                                                                                                                                                                                                                                   
|        | 
|10.21  |  | Exclusive Agreement dated as of April 15, 2001 between the Registrant and The Board of Trustees of The Leland Stanford Junior University (filed as Exhibit 10.21 to the Registrants Registration Statement on Form S-1 (SEC
File No. 333-199202), as filed on October 7, 2014, and incorporated herein by reference)                                         
|        | 
|10.22   |  | First Amendment to Exclusive Agreement dated as of October 26, 2005 between the Registrant and The Board of Trustees of The Leland Stanford Junior University (filed as Exhibit 10.22 to the Registrants Registration
Statement on Form S-1 (SEC File No. 333-199202), as filed on October 7, 2014, and incorporated herein by reference)                    
|        | 
|10.23  |  | Second Amendment to Exclusive Agreement dated as of January 15, 2006 between the Registrant and The Board of Trustees of The Leland Stanford Junior University (filed as Exhibit 10.23 to the Registrants Registration
Statement on Form S-1 (SEC File No. 333-199202), as filed on October 7, 2014, and incorporated herein by reference)                   
|        | 
|10.24  |  | Amendment No. 3 to the License Agreement Effective 4/15/2001 dated as of May 1, 2009 between the Registrant and The Board of Trustees of The Leland Stanford Junior University (filed as Exhibit 10.24 to the
Registrants Registration Statement on Form S-1 (SEC File No. 333-199202), as filed on October 7, 2014, and incorporated herein by reference)   
|        | 
|10.25   |  | Amendment No. 4 to the License Agreement Effective 4/15/2001 dated as of April 29, 2010 between the Registrant and The Board of Trustees of The Leland Stanford Junior University (filed as Exhibit 10.25 to the Registrants
Registration Statement on Form S-1 (SEC File No. 333-199202), as filed on October 7, 2014, and incorporated herein by reference)
|        | 
|10.26  |  | License Agreement dated as of January 6, 2008 between the Registrant (ProChon Biotech Ltd.) and Yeda Research and Development Company Limited (filed as Exhibit 10.26 to the Registrants Registration Statement on Form S-1
(SEC File No. 333-199202), as filed on October 7, 2014, and incorporated herein by reference)                                    
|        | 
|10.27  |  | Amendment to License Agreement dated as of March 23, 2010 between the Registrant (ProChon Biotech Ltd.) and Yeda Research and Development Company Limited (filed as Exhibit 10.27 to the Registrants Registration Statement
on Form S-1 (SEC File No. 333-199202), as filed on October 7, 2014, and incorporated herein by reference)                        
|        | 
|10.28   |  | Lease Agreement dated of June 9, 2006 between the Registrant and Intercontinental Fund III 830 Winter Street LLC (filed as Exhibit 10.28 to the Registrants Registration Statement on Form S-1 (SEC File No. 333-199202), as
filed on October 7, 2014, and incorporated herein by reference)                                                                 
|        | 
|10.29   |  | First Amendment to Lease dated as of October 1, 2009 between the Registrant and Intercontinental Fund III 830 Winter Street LLC (filed as Exhibit 10.29 to the Registrants Registration Statement on Form S-1 (SEC File No.
333-199202), as filed on October 7, 2014, and incorporated herein by reference)                                                  
|        | 
|10.30   |  | Separation Agreement, dated February 28, 2014, between the Registrant and Peter Greenleaf (filed as Exhibit 10.30 to the Registrants Registration Statement on Form S-1 (SEC File
No. 333-199202), as filed on October 7, 2014, and incorporated herein by reference)                                                                                        
|        | 
|10.31  |  | Collagen Technology Transfer Agreement dated as of April 15, 2014 between the Registrant and Advanced BioMatrix, Inc. (filed as Exhibit 10.31 to the Registrants Registration Statement on Form S-1 (SEC File No. 333-199202), as
filed on October 7, 2014, and incorporated herein by reference)                                                            
|        | 
|10.32+  |  | Employment Agreement dated April 26, 2014 between the Registrant and Adam Gridley (filed as Exhibit 10.32 to the Registrants Registration Statement on Form S-1 (SEC File No. 333-199202), as filed on October 7, 2014, and
incorporated herein by reference)                                                                                                



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##### Table of Contents

|        |  |                                                                                                                                                                                                                                                                                                      
|------- |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|Exhibit |  | Description                                                                                                                                                                                                                                                                                          
|        | 
|10.33   |  | Lease Agreement dated as of June 2, 2014 between the Registrant and ARE-60 Westview, LLC (filed as Exhibit 10.33 to the Registrants Registration Statement on Form S-1 (SEC File
No. 333-199202), as filed on October 7, 2014, and incorporated herein by reference)                                
|        | 
|10.34   |  | Loan and Security Agreement dated as of July 9, 2014 between the Registrant and Silicon Valley Bank (filed as Exhibit 10.34 to the Registrants Registration Statement on Form S-1 (SEC File No. 333-199202), as filed on
October 7, 2014, and incorporated herein by reference)                     
|        | 
|10.35  |  | Exclusive Channel Collaboration Agreement dated as of September 30, 2014 between the Registrant and Intrexon Corporation (filed as Exhibit 10.35 to the Registrants Registration Statement on Form S-1 (SEC File No.
333-199202), as filed on October 7, 2014, and incorporated herein by reference)
|        | 
|10.36   |  | Separation Agreement, dated February 26, 2015, between the Registrant and Nancy Lynch (filed as Exhibit 10.36 to the Registrants Current Report on Form 8-K, as filed on February 26, 2015, and incorporated herein by
reference)                                                                   
|        | 
|21.1*   |  | List of Subsidiaries                                                                                                                                                                                                                                                                                 
|        | 
|23.1*   |  | Consent of Grant Thornton LLP, independent registered public accounting firm                                                                                                                                                                                                                         
|        | 
|31.1*   |  | Certification of the Chief Executive Officer, as required by Section 302 of the Sarbanes-Oxley Act of 2002                                                                                                                                                                                           
|        | 
|31.2*   |  | Certification of the Chief Financial Officer as required by Section 302 of the Sarbanes-Oxley Act of 2002                                                                                                                                                                                            
|        | 
|32.1*   |  | Certifications of the Chief Executive Officer and Chief Financial Officer as required by 18 U.S.C. 1350                                                                                                                                                                                              



|+ | Indicates management contract or compensatory plan.
|- | ---------------------------------------------------

| | Confidential treatment has been granted with respect to certain portions of this document.
|- | ------------------------------------------------------------------------------------------

|* | Filed herewith
|- | --------------



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