Exhibit 10.3
[***] = Certain confidential information contained in this document,
marked by brackets, has been omitted because it is both
(i) not material and (ii) would be competitively harmful if publicly disclosed.

AMENDMENT OF SOLICITATION/MODIFICATION OF CONTRACT1. CONTRACT ID CODEPAGE OF
PAGES123
2. AMENDMENT/MODIFICATION NO

P00028
3. EFFECTIVE DATE

See Block 16C
4. REQUISITION/PURCHASE REQ NO

N/A.
5. PROJECT NO (if applicable)
6. ISSUED BY    CODEASPR-BARDA
7. ADMINISTERED BY (if other than line item 6)    CODE
ASPR-BARDA02
ASPR-BARDA
200 Independence Ave., S.W.
Room 640-G
Washington DC 20201
ASPR-BARDA
330 Independence Ave., SW, Rm G640
Washington DC 20201
8. NAME AND ADDRESS OF CONTRACTOR (No, street, county, State and ZIP Code)
(x)9A AMENDMENT OF SOLICITATION NO.
CHIMERIX, INC. 1377270
CHIMERIX, INC.    2505 MERIDIAN P
2505 MERIDIAN PKWY STE 340
DURHAM NC 277135246
9B DATED (SEE ITEM 11)

X
10A MODIFICATION OF CONTRACT/ORDER NO
HHSO100201100013C

10B DATED (SEE ITEM 13)
 02/16/2011
CODE 1377270
FACILITY CODE11. THIS ITEM ONLY APPLIES TO AMENDMENTS OF SOLICITATIONS
    The above numbered solicitation is amended as set forth in Item 14. The
hour and date specified of receipt of Offers     is extended.  is not extended
Offers must acknowledge receipt of this amendment prior to the hour end dale
specified in the solicitation or as amended, by one or the following methods:
(a) By completing Items 8 and 15, and returning __________ copies of the
amendment; (b) By acknowledging receipt of this amendment on each copy of the
offer submitted; or (c) By separate letter or telegram which includes a
reference to the solicitation and amendment numbers. FAILURE OF YOUR
ACKNOWLEDGEMENT TO BE RECEIVED AT THE PLACE DESIGNATED FOR THE RECEIPT OF OFFERS
PRIOR TO THE HOUR AND DATE SPECIFIED MAY RESULT IN REJECTION OF YOUR OFFER. If
by virtue of this amendment you desire to change an offer already submitted,
such change may be made by telegram or letter, provided each telegram or letter
makes reference to the solicitation and this amendment, and is received prior to
the opening hour and date specified.
12. ACCOUNTING AND APPROPRIATION DATA (if required)
N/A.
13. THIS ITEM ONLY APPLIES TO MODIFICATION OF CONTRACTS/ORDERS. IT MODIFIES THE
CONTRACT/ORDER NO. AS DESCRIBED IN ITEM 14.CHECK ONE
A.    THIS CHANGE ORDER IS ISSUED PURSUANT TO (Specify authority) THE CHANGES
SET FORTH IN ITEM 14 ARE MADE IN THE CONTRACT ORDER NO IN ITEM 10A
B.    THE ABOVE NUMBERED CONTRACT/ORDER IS MODIFIED TO REFLECT THE
ADMINISTRATIVE CHANGES (such as changes in paying office, appropriation date,
etc.) SET FORTH IN ITEM 14, PURSUANT TO THE AUTHORITY OF FAR 43.103(b).
C.    THIS SUPPLEMENTAL AGREEMENT IS ENTERED INTO PURSUANT TO AUTHORITY OF

X
D.    OTHER (Specify type of modification and authority)
Bilateral: Mutual Agreement of the Parties.
E. IMPORTANT: Contractor  is not.  is required to sign this document and
return 0 copies to the issuing office.
14. DESCRIPTION OF AMENDMENT/MODIFICATION (Organized by UCF section headings,
including solicitation/contract subject matter where feasible)
Tax ID Number: 33-0903395
DUNS Number: 121785997
A. The purpose of this modification is for the Government and the Contractor to
bilaterally modify the Statement of Work requirements for Option 2/CLIN 0003 for
the purposes of adding within scope changes to the Statement of Work for [***]
studies and [***] to be used in [***] studies in order to comply with recent FDA
guidance.
1. As a result, Attachment 1, Statement of Work dated 27 October 2014, under
PART III, LIST OF DOCUMENTS, EXHIBITS AND OTHER ATTACHMENTS, SECTION J - LIST OF
ATTACHMENTS is hereby deleted and replaced with the attached Statement of Work
dated 20 August 2015. The
Continued ...
Except as provided herein, all terms and conditions of the document referenced
in Item 9A or 10A, as heretofore changed, remains unchanged and in full force
and effect.
15A. NAME AND TITLE OF SIGNER (Type or print)
 Michael D. Rogers, CDO
16A. NAME AND TITLE OF CONTRACTING OFFICER (Type or print)
ETHAN J. MUELLER
15B. CONTRACTOR/OFFEROR
 /s/ Michael D. Rogers    
(Signature of person authorized to sign)
15C. DATE SIGNED
8/31/2015
16B. UNITED STATES OF AMERICA
  /s/ Ethan J. Mueller     
(Signature of person authorized to sign)
16C. DATE SIGNED
9/1/2015

NSN 7540-152-8070    STANDARD FORM 30 (REV 10-83)
Previous edition unusable    Prescribed by GSA
    FAR (48 CFR) 53.243

--------------------------------------------------------------------------------

CONTINUATION SHEET
REFERENCE NO. OF DOCUMENT BEING CONTINUED
HHSO100201100013C/P00028    
PAGE OF223
NAME OF OFFEROR OR CONTRACTOR
CHIMERIX, INC. 1377270
ITEM NO.
(A)
SUPPLIES/SERVICES
(B)
QUANTITY
(C)
UNIT
(D)
UNIT PRICE
(E)
AMOUNT
(F)
efforts within Option 2/CLIN 0003 that involve [***] and [***] cannot be
performed until the receipt and approval of all required Protocols by BARDA
inclusive of all IRB, OHRP approvals and any required Ethics Approvals for any
clinical trials/studies and any required approved OLAW Assurances and IIA
approvals from OLAW for any non clinical animal studies.
2. The incorporation of the attached Statement of Work (SOW) changes in the
paragraph above also results in the incorporation of the attached changes into
the contract into WBS Milestones/Deliverables and Technical Deliverables and
Contract Milestones and Go/No Go Decision Gates dated 20 August 2015 under
Article F.2. Deliverables.

3. The total amount, scope and period of performance of Option 2/CLIN 0003
remains unchanged. The total amount, scope and period of performance of all
other CLINs that are currently being performed under the contract remain
unchanged. This modification does not exercise any unexercised Option CLINs
under the contract and does not authorize any performance of efforts under any
unexercised Option CLINs under the contract. In addition, the total amount,
scope and period of performance of all unexercised Option CLINs under the
contract remain unchanged.

B. This is a no cost bilateral modification. All other terms and conditions of
the contract remain unchanged.
Period of Performance: 02/16/2011 to 06/30/2016

NSN 7540-152-8067    STANDARD FORM 336 (4-86)
    Sponsored by GSA
    FAR (48 CFR) 53.110

--------------------------------------------------------------------------------

BARDA Broad Agency Announcement (BAA)
(CBRN-BAA-10-100-SOL-00012)
Advanced Research and Development of Chemical, Biological, Radiological, and
Nuclear Medical Countermeasures
DEVELOPMENT OF CMX-001 FOR THE TREATMENT OF SMALLPOX
Topical Area of Interest No. 3, Antimicrobial Drugs

Contractual Statement of Work

1.PREAMBLE

Independently and not as an agency of the Government, the Contractor shall be
required to furnish all the necessary services, qualified personnel, material,
equipment, and facilities, not otherwise provided by the Government, as needed
to perform the Statement of Work submitted in response to the BARDA Broad Agency
Announcement (BAA) CBRN-BAA-10-100-SOL-00012.

In accordance with FAR 52.243-2, Changes-Cost Reimbursement (Alt. V), the
Government reserves the right to modify the milestones, progress, schedule,
budget, or to add or delete deliverables, process, or schedules if the need
arises. Because of the nature of this research and development (R&D) contract
and the complexities inherent in this and prior programs, at designated
milestones the Government will evaluate whether work should be redirected,
removed, or whether schedule or budget adjustments should be made.

1.0 Overall Objectives and Scope

The overall objective of this contract is to advance the development of CMX-001
as a broad-spectrum therapeutic antiviral for the treatment of smallpox
infections and dsDNA viruses. The scope of work for this contract includes
preclinical, clinical and manufacturing development activities that fall into
the following areas: non-clinical efficacy studies; clinical activities;
manufacturing activities; and all associated regulatory, quality assurance,
management, and administrative activities. The Research and Development (R&D)
effort for the antiviral will progress in specific stages that cover the base
performance segment and four (4) option segments as specified in this contract.
The Contractor must complete specific tasks required in each of the five
discrete work segments. The scope of work has been broken into the following
five phases which are discrete work segments:
i.[***]
ii.[***]
iii.[***]
iv.[***]
v.[***]

--------------------------------------------------------------------------------

2.PHASE I: [***]
Research and development of CMX-001 for the treatment of smallpox and dsDNA
viruses to include the following activities: [***].The contractor shall carry
out the following tasks and subtasks and in accordance with an agreed upon
Integrated Master Schedule and Integrated Master Plan (defined in 2.1.8 and
2.1.9 below) which shall further detail the conduct of the specific tasks and
subtasks.

2.1 Program Management

The Contractor shall provide for the following as outlined below and in the
contract deliverables list (Article F.2):

2.1.1    The overall management, integration and coordination of all contract
activities, including a technical and administrative infrastructure to ensure
the efficient planning, initiation, implementation, and direction of all
contract activities;

2.1.2    A Principal Investigator (PI) responsible for project management,
communication, tracking, monitoring and reporting on status and progress, and
modification to the project requirements and timelines, including projects
undertaken by subcontractors; The contract deliverables list (reference),
identifies all contract deliverables and reporting requirements for this
contract.

2.1.3    Project Manager(s) with responsibility for monitoring and tracking
day-to-day progress and timelines, coordinating communication and project
activities; costs incurred; and program management; The contract deliverables
list (reference), identifies all contract deliverables and reporting
requirements for this contract.

2.1.4    A BARDA Liaison with responsibility for effective communication with
the Project Officer and Contracting Officer.

2.1.5    Administrative and legal staff to provide development of compliant
subcontracts, consulting, and other legal agreements, and ensure timely
acquisition of all proprietary rights, including IP rights, and reporting all
inventions made in the performance of the project.

2.1.6    Administrative staff with responsibility for financial management and
reporting on all activities conducted by the Contractor and any subcontractors.

--------------------------------------------------------------------------------

2.1.7    Contract Review Meetings.
2.1.7.1     The Contractor shall participate in regular meetings to coordinate
and oversee the contract effort as directed by the Contracting and Project
Officers. Such meetings may include, but are not limited to, meeting of the
Contractors and subcontractors to discuss clinical manufacturing progress,
product development, product assay development, scale up manufacturing
development, clinical sample assays development, preclinical/clinical study
designs and regulatory issues; meetings with individual contractors and other
HHS officials to discuss the technical, regulatory, and ethical aspects of the
program; and meeting with technical consultants to discuss technical data
provided by the Contractor.
2.1.7.2 The Contractor shall participate in teleconferences every two weeks
between the Contractor and subcontractors and BARDA to review technical
progress. Teleconferences or additional face-to-face meetings shall be more
frequent at the request of BARDA.
2.1.8    Integrated Master Schedule
2.1.8.1     Within 30 calendar days of the effective date of the contract, the
Contractor shall submit a first draft of an updated Integrated Master Schedule
in a format agreed upon by BARDA to the Project Officer and the Contracting
Officer for review and comment. The Integrated Master Schedule shall be
incorporated into the contract, and will be used to monitor performance of the
contract. Contractor shall include the key milestones and Go/No Go decision
gates. The IMS for the period of performance will be mutually agreed upon at the
PMBR
2.1.9    Integrated Master Plan
2.1.9.1     Work Breakdown Structure: The Contractor shall utilize a WBS
template agreed upon by BARDA for reporting on the contact. The Contractor shall
expand and delineate the Contract Work Breakdown Structure (CWBS) to a level
agreed upon by BARDA as part of their Integrated Master Plan for contract
reporting. The CWBS shall be discernable and consistent. BARDA may require
Contractor to furnish WBS data at the work package level or at a lower level if
there is significant complexity and risk associated with the task.
2.1.9.2 GO/NO-GO Decision Gates: The Integrated Master Plan outlines key
milestones with “Go/No Go” decision criteria (entrance and exit criteria for
each phase of the project). The project plan should include, but not be limited
to, milestones in manufacturing, non-clinical and clinical studies, and
regulatory submissions.
2.1.9.3 Earned Value Management System Plan: Subject to the requirements under
HHSAR Clause 352.234-4, the Contractor shall use principles of Earned Value
Management System (EVMS) in the management of this contract. The Seven
Principles are:
I.Plan all work scope for the program to completion.

--------------------------------------------------------------------------------

II.Break down the program work scope into finite pieces that can be assigned to
a responsible person or organization for control of technical, schedule, and
cost objectives.
III.Integrate program work scope, schedule, and cost objectives into a
performance measurement baseline plan against which accomplishments may be
measured. Control Changes to the baseline.
IV.Use actual cost incurred and recorded in accomplishing the work performed.
V.Objectively assess accomplishments at the work performance level.
VI.Analyze significant variances from the plan, forecast impacts, and prepare an
estimate at completion based on performance to date and work to be performed.
VII.Use earned value information in the company’s management processes.

Elements of EVMS shall be applied to all Cost Plus Fixed Fee CLINs as part of
the Integrated Master Project Plan, the Contractor shall submit a written
summary of the management procedures that it will establish, maintain and use to
comply with EVMS requirements.

2.1.10    Decision Gate Reporting: On completion of a stage of the product
development, as defined in the agreed upon Integrated Master Schedule and
Integrated Master Plan, the Contractor shall prepare and submit to the Project
Officer and the Contracting Officer a Decision Gate Report that contains (i)
sufficient detail, documentation and analysis to support successful completion
of the stage according to the predetermined qualitative and quantitative
criteria that were established for Go/No Go decision making; and (ii) a
description of the next stage of product development to be initiated and a
request for approval to proceed to the next stage of product development.

2.1.11 Risk Management Plan: The Contractor shall develop a risk management plan
within 90 days of contract award highlighting potential problems and/or issues
that may arise during the life of the contract, their impact on cost, schedule
and performance, and appropriate remediation plans. This plan should reference
relevant WBS elements where appropriate. Updates to this plan shall be included
every three months (quarterly) in the monthly Project Status Report.

--------------------------------------------------------------------------------

2.1.12 Performance Measurement Baseline Review (PMBR): The Contractor shall
submit a plan for a PMBR to occur within 90 days of contract award. At the PMBR,
the Contractor and BARDA shall mutually agree upon the budget, schedule and
technical plan baselines (Performance Measurement Baseline). These baselines
shall be the basis for monitoring and reporting progress throughout the life of
the contract. The PMBR is conducted to achieve confidence that the baselines
accurately capture the entire technical scope of work, are consistent with
contract schedule requirements, are reasonably and logically planned, and have
adequate resources assigned. The goals of the PMBR are as FOLLOWS:

I.Jointly assess areas such as the Contractor’s planning for complete coverage
of the SOW, logical scheduling of the work activities, adequate resources, and
identification of inherent risks
II.Confirm the integrity of the Performance Measurement Baseline (PMB)
III.Foster the use of EVM as a means of communication
IV.Provide confidence in the validity of Contractor reporting
V.Identify risks associated with the PMB
VI.Present any revised PMBs for mutual agreement
VII.Present an Integrated Master Schedule: The Contractor shall deliver an
initial program level Integrated Master Schedule (IMS) that rolls up all
time-phased WBS elements down to the activity level. This IMS shall include the
dependencies that exist between tasks. This IMS will be agreed to and finalized
at the PMBR. DI-MGMT-81650 may be referenced as guidance in creation of the IMS
(see http://www.acq.osd.mil/pm/).
VIII.Present the Risk Management Plan

2.1.13 Deviation Request: During the course of contract performance, in response
to a need to change IMS activities as baselined at the PMBR, the Contractor
shall submit a Deviation Report. This report shall request a change in the
agreed-upon IMS and timelines. This report shall include: (i) discussion of the
justification/rationale for the proposed change; (ii) options for addressing the
needed changes from the agreed upon timelines, including a cost-benefit analysis
of each option; and (iii) recommendations for the preferred option that includes
a full analysis and discussion of the effect of the change on the entire product
development program, timelines, and budget.

2.1.14 Monthly and Annual Reports: The Contractor shall deliver Project Status
Reports on a monthly basis. The reports shall address the items below cross
referenced to the WBS, SOW, IMS, and EVM:
I.Executive summary highlighting the progress, issues, and relevant activities
in manufacturing, non-clinical, clinical, and regulatory;
II.Progress in meeting contract milestones, detailing the planned progress and
actual progress during the reporting period, explaining any differences between
the two and corrective steps;

--------------------------------------------------------------------------------

III.Updated IMS;
IV.Updated EVM;
V.Updated Risk Management Plan (Every 3 months);
VI.Three month rolling forecast of planned activities;
VII.Progress of regulatory submissions;
VIII.Estimated and actual expenses;

2.1.15 Data Management: The Contractor shall develop and implement data
management and quality control systems/procedures, including transmission,
storage, confidentiality, and retrieval of all contract data;
2.1.15.1 Provide for the statistical design and analysis of data resulting from
the research;
2.1.15.2 Provide raw data or specific analyses of data generated with contract
funding to the Project Officer, upon request.

2.2 Non-Clinical Toxicology
2.2.1 N/A (no scope)

2.3 Non-Clinical
2.3.1 Develop and validate [***] to lower [***].
2.3.2 [***]: Conduct [***] studies including [***] studies, [***], and [***]
studies in [***].
2.3.3 [***]
2.3.3.1 Conduct [***] study in [***].
2.3.3.2 Conduct [***] studies including [***] studies, [***] studies including
[***] for CMX-001 and [***] in [***].
2.3.4 Use of [***] as a CMX-001 Surrogate in [***] Studies.
2.3.4.1 Dose [***] with [***] to identify the concentration of the [***] in
[***] associated with [***] of [***].
2.3.5 Scaling of [***] to [***] by conducting studies with [***] to determine
[***] in [***].
2.3.6 [***] determination of CMX001, [***] and [***] in the [***].
2.3.7 Conduct [***] experiments to demonstrate [***] following effective [***]
prior to [***].
2.3.8 Conduct studies to optimize [***] in [***].
2.3.9 Conduct CMX001 [***] study in [***] at a dose of CMX001 equivalent or less
than [***] with treatment beginning at the [***]

--------------------------------------------------------------------------------

2.4 Clinical
2.4.1 Measurement of [***] levels in [***] and correlate the [***] levels to
studies conducted in [***].
2.4.2 Conduct expanded access protocol ([***]).
2.4.3 Analyze data and provide a Final Report for [***] evaluation of CMX001 in
patients [***]
2.5 Regulatory
2.5.1 Engaging the FDA on a path to support the treatment of smallpox indication
with CMX-001
2.5.2 Preparing materials for and requesting, scheduling and participating in
all meetings with the FDA, including meetings to review EUA and/or all other
data packages;
2.5.3 Providing BARDA with (i) the initial draft minutes and final draft minutes
of any formal meeting with the FDA; (ii) final minutes of any informal meeting
with the FDA;
2.5.4 Obtain FDA concurrence on the feasibility of the proposed [***] with
CMX001/[***]/[***] in the [***], including FDA feedback on [***] and review of
data for the first [***] enrolled in the [***] sub-study
2.5.5 Develop and submit a revised [***] for CMX001 for Treatment of Smallpox,
including [***] for FDA review and comment, and revise the [***] as requested by
FDA

2.6 CMC
2.6.1 Validation of the [***] process: Validation of the process to demonstrate
the [***] of a [***] of acceptable quality will be performed.
2.6.2 Validation of the [***] process to produce [***]: Validation of the
process to demonstrate the [***] of a [***] of acceptable quality will be
performed.

3. PHASE II: [***]

Research and development of CMX001 for the treatment of smallpox to include the
following activities: [***]. The contractor shall carry out the following tasks
and subtasks and in accordance with the agreed upon Integrated Master Schedule
and Integrated Master Plan (defined in 2.1.8 and 2.1.9) which shall further
detail the conduct of the specific tasks and subtasks.

--------------------------------------------------------------------------------

3.1 Program Management (consistent with section 2.1)
3.1.1 Program management scope in BASE year is consistent with program
management scope in each option year.

3.2 Non-Clinical toxicology
3.2.1 N/A (no scope)

3.3 Non-Clinical
3.3.1 Quantify [***] concentrations in [***] from [***].
3.3.2 Determine [***] for CMX001 in [***] in [***].
3.3.3 Scaling of [***] to [***] - Review with BARDA and FDA the [***] generated
to support scaling between [***] and [***] using [***] as well as comparisons of
[***] in the [***].
3.3.4 Determine [***] for CMX001 in [***] in [***].
3.3.5 Conduct [***].
3.3.6 Conduct [***] and [***]
3.3.7 Chimerix will provide [***] for the [***] and [***] conducted under [***]

3.4 Clinical
3.4.1 N/A (No scope)

--------------------------------------------------------------------------------

3.5 Regulatory
3.5.1 Engaging the FDA on a path to support the treatment of smallpox indication
with CMX001
3.5.2 Generating all necessary documentation for [***]. [***]
3.5.3 Preparing materials for and requesting, scheduling and participating in
all meetings with the FDA, including meetings to review EUA (if needed) and/or
all other data packages;
3.5.4 Providing BARDA with (i) the initial draft minutes and final draft minutes
of any formal meeting with the FDA relating to the smallpox program; (ii) final
draft minutes of any informal meeting with the FDA relating to the smallpox
program.

3.6 CMC
3.6.1 N/A (No scope)

4.PHASE III: [***]

Research and development of CMX001 for the treatment of smallpox and dsDNA
viruses to include the following activities: [***] Study, [***] Study, [***].
The contractor shall carry out the following tasks and subtasks and in
accordance with agreed upon Integrated Master Schedule and Integrated Master
Plan (defined in 2.1.8 and 2.1.9) which shall further detail the conduct of the
specific tasks and subtasks.

4.1 Program Management (Consistent with section 2.1)
4.1.1 Program management scope in BASE year is consistent with program
management scope in each option year.

4.2 Non-Clinical toxicology
4.2.1 N/A (no scope)

--------------------------------------------------------------------------------

4.3 Non-Clinical
4.3.1 [***] studies: A [***] study will be conducted with the [***] of CMX001
selected based on the results of the [***] and [***] studies. [***] will be
[***] to receive [***] beginning at the [***] or the FDA agreed upon trigger for
treatment. The first [***] study will be a [***] study of CMX001 in the [***]
model. A study will be conducted with an [***] of CMX001 to determine the [***]
after observation of the FDA agreed upon trigger for treatment. These studies
will include [***] and [***]. The primary endpoint will be [***].
4.3.2 A [***] study of CMX001 in the [***]: The delayed treatment study will
evaluate the [***] of CMX001 at [***]. The study will include [***] and [***]
agreed upon with the FDA. The primary endpoint will be [***]. A [***] study to
measure [***] in the selected [***] will be conducted to confirm the [***]. A
[***] study will be conducted prior to [***] studies in the [***] to 1)
determine [***] and [***] of [***] and 2) to confirm presence of [***] at fixed
intervals [***].
4.3.3 Conduct additional studies in [***] to determine [***] and [***] for
CMX001 at [***].
4.3.4 Conduct [***] of [***].
4.3.5 Conduct additional studies for [***] of [***] to be used in [***].

4.4 Clinical
4.4.1 Clinical [***] studies to evaluate [***] used in previous clinical studies
and [***] used in previous clinical studies and [***]. This study will [***] to
[***] to determine if [***] are comparable.

--------------------------------------------------------------------------------

4.5 Regulatory
4.5.1 Generating all necessary data and preparing documentation for an [***]
meeting submissions to regulatory agencies;
4.5.2 Preparing materials for and requesting, scheduling and participating in
all meetings with the FDA, including the [***] Meeting, meetings to review
[***], EUA (if needed) and/or all other data packages;
4.5.3 Providing BARDA with (i) the initial draft minutes and final draft minutes
of any formal meeting with the FDA relating to this Contract; (ii) final draft
minutes of any informal meeting with the FDA;
4.5.4 Preparing an [***] submission [***].

4.6 CMC
4.6.1 [***] in order to generate [***] for registration and clinical trial
supplies.
4.6.2 [***]. Validation of the process to demonstrate the [***] of a [***] of
acceptable quality will be performed.

5.PHASE IV: [***]

Research and development of CMX-001 for the treatment of smallpox to include the
following activities: [***], [***], [***], [***] and [***]. The contractor shall
carry out the following tasks and subtasks and in accordance with agreed upon
Integrated Master Schedule and Integrated Master Plan (defined in 2.1.8 and
2.1.9) which shall further detail the conduct of the specific tasks and
subtasks.

5.1 Program Management (Consistent with section 2.1)
5.1.1 Program management scope in BASE year is consistent with program
management scope in each option year.

5.2 Non-Clinical toxicology
5.2.1 N/A (no scope)

5.3 Non-Clinical
5.3.1 [***] studies. ). [***] will be randomized to receive [***] beginning at
the [***]. These studies will include [***] and [***] as well as [***] including
[***]. The primary endpoint will be [***].

--------------------------------------------------------------------------------

5.3.2 [***] Studies. This study will determine the [***] at the [***]. [***] and
[***] at the [***]. The primary endpoint will be [***]. If FDA requires a [***]
in the [***] studies, the [***] study may not be needed.
5.3.3 Conduct [***] Studies. This study will determine the [***] at the [***].
[***] and [***] at the [***].

5.4 Clinical
5.4.1 Phase 3 development including [***] study, [***] study, phases II [***]
study. A [***] study will be conducted to compare the [***] of CMX001 in [***]
to [***]. A [***] study will be conducted to compare the [***] of CMX001 when
[***]. A [***] study will be conducted to [***] to support an NDA.
5.4.2 Measurement of [***] in [***] and correlate the [***] to studies conducted
in [***] (if required)
5.4.3 Compile [***] for NDA submission. A [***] collected from all CMX001
studies, irrespective of indication, will be populated and analyzed in order to
support an NDA for smallpox.

5.5 Regulatory
5.5.1 Generating all necessary data and preparing documentation for NDA
submissions to regulatory agencies;
5.5.2 Preparing materials for and requesting, scheduling and participating in
all meetings with the FDA, including meetings to review IND, NDA and/or all
other data packages;
5.5.3 Providing BARDA with (i) the initial draft minutes and final draft minutes
of any formal meeting with the FDA; (ii) final draft minutes of any informal
meeting with the FDA

5.6 CMC
5.6.1 [***]. [***] of the process to demonstrate the [***] of a [***] will be
performed.

--------------------------------------------------------------------------------

6.PHASE V: [***]

Research and development of CMX-001 for the treatment of smallpox to include the
following activities: [***]. The contractor shall carry out the following tasks
and subtasks and in accordance with an agreed upon Integrated Master Schedule
and Integrated Master Plan (defined in 2.1.8 and 2.1.9) which shall further
detail the conduct of the specific tasks and subtasks.

6.1 Program Management (Consistent with section 2.1)
6.1.1 Program management scope in BASE year is consistent with program
management scope in each option year.

6.2 Non-Clinical toxicology
6.2.1 N/A (no scope)

6.3 Non-Clinical
6.3.1 [***] Studies. This study replicates [***] if a larger sample size is
necessary to achieve a [***] result.

6.4 Clinical
6.4.1 Compile [***]. A database of [***] data collected from all CMX001 clinical
studies, irrespective of [***], will be populated and analyzed in order to
support an NDA for smallpox.

6.5 Regulatory
6.5.1 Generating all necessary data and preparing documentation for NDA
submissions to regulatory agencies;
6.5.2 Submitting NDA documentation to the FDA in a timely manner, consistent
with timelines set out in the contract and by the FDA.
6.5.3 Preparing materials for and requesting, scheduling and participating in
all meetings with the FDA, including meetings to review IND, EUA and/or all
other data packages;
6.5.4 Providing BARDA with (i) the initial draft minutes and final draft minutes
of any formal meeting with the FDA; (ii) final draft minutes of any informal
meeting with the FDA;

6.6 CMC
6.6.1 [***]. [***] of the process to demonstrate the [***] of a [***] will be
performed.

7.Other Items

--------------------------------------------------------------------------------

7.1 Facilities, Equipment and Other Resources. (Contract: Section J)
The Contractor shall provide equipment; facilities and other resources required
for implementation of the SOW dated 27-OCT-14 to comply with all Federal and HHS
regulations in:

7.1.1 The [***] and use of [***];
7.1.2 The acquisition, handling, storage and shipment of [***], including [***]
required for working with the [***];
7.1.3 The [***] of [***] under cGMP;
7.1.3.1 The design and conduct of [***]; and
7.1.3.2 The conduct of [***] studies to determine [***] of [***]
7.1.5 Design and conduct of [***] under GCP.

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REVISED MILESTONES ARTICLE F.2 DELIVERABLES
Current Milestone #
Milestone Definition
Go Criteria
No-Go Criteria
Deliverable
WBS/SOW #
Segment
1
[***]
[***]
[***]
[***]
[***]
[***]
2
[***]
[***]
[***]
[***]
[***]
[***]
3
[***]
[***]
[***]
[***]
[***]
[***]
4
[***]
[***]
[***]
[***]
[***]
[***]
5
[***]
[***]
[***]
[***]
[***]
[***]

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[***]
6
[***]
[***]
[***]
[***]
[***]
[***]
7
[***]
[***]
[***]
[***]
[***]
[***]
8
[***]
[***]
[***]
[***]
[***]
[***]
[***]
[***]

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[***]
[***]
9
No longer in development plan.
N/A
N/A
10
No longer in development plan.
N/A
N/A
11
[***]
[***]
[***]
[***]
[***]
[***]
12
No longer in development plan.
N/A
N/A
13
No longer in development plan.
N/A
N/A
14
[***]
[***]
[***]
[***]
[***]
[***]
15
[***]
[***]
[***]
[***]
[***]
[***]

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[***]
16
[***]
[***]
[***]
[***]
[***]
[***]
17
No longer in development plan.
N/A
N/A
18
[***]
[***]
[***]
[***]
[***]
[***]
19
[***]
[***]
[***]
[***]
[***]
[***]

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[***]
20
[***]
[***]
[***]
[***]
[***]
[***]
21
[***]
[***]
[***]
[***]
[***]
[***]
22
[***]
[***]
[***]
[***]
[***]
[***]
23
[***]
[***]
[***]
[***]
[***]
[***]
24
[***]
[***]
[***]
[***]
[***]
[***]

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[***]
25
[***]
[***]
[***]
[***]
[***]
[***]
26
[***]
[***]
[***]
[***]
[***]
[***]
BCA MILESTONE
[***]
[***]
[***]
[***]
[***]
[***]
NEW OPTION 1 MILESTONE TO BE ADDED TO ARTICLE F.2 DELIVERABLES OF THE CONTRACT
28
[***]
[***]
[***]
[***]
[***]
[***]

--------------------------------------------------------------------------------

[***]
29
[***]
[***]
[***]
[***]
[***]
[***]
30
[***]
[***]
[***]
[***]
[***]
[***]