Exhibit 10.2

UNIDYM, INC.

SUBSCRIPTION AGREEMENT

SERIES C PREFERRED STOCK



---

Exhibit 10.2

SUBSCRIPTION AGREEMENT

THIS SUBSCRIPTION AGREEMENT (this
Agreement) is made as of the last date indicated on the signature pages hereto between Unidym, Inc., a Delaware corporation (the Company), and the undersigned investor party hereto
(Investor).

RECITALS

WHEREAS, the Company wishes to sell up to an aggregate of 8,333,333 shares of the Companys Series C Preferred Stock (Shares) to one or more investors at a purchase price of $1.80 per
Share, and the Investor wishes to purchase Shares from the Company.

NOW, THEREFORE, in consideration of the mutual covenants, agreements
and conditions, and upon acknowledgement of each of the parties of the receipt of valuable consideration, the parties herein agree as follows:

1. Purchase and Sale of Shares.

1.1 The Initial Closing. At the Initial Closing (as defined below), the Company
shall issue and sell to Investor such number of Shares as is set forth immediately below Investors name on the signature pages hereto. Investor shall pay an amount equal to $1.80 times the number of Shares to be purchased by the Investor (the
Purchase Price) in cash (by check or wire transfer) or by cancellation of indebtedness in United States Dollars to the Company to be held in escrow until the Initial Closing, for release to the Company thereafter. Promptly
after the Initial Closing, the Company shall deliver to Investor a duly executed certificate representing the Shares which Investor is purchasing hereunder. The purchase and sale transaction contemplated hereby will close on the first business day
immediately following the satisfaction of the Initial Closing conditions set forth herein, which is targeted to be no later than 5:00 p.m., Pacific Time on October 17, 2007, as such date and time may be modified by the Company in its sole
discretion (such day, the Initial Closing).

1.2 Additional Closing(s).

(a) Conditions of Additional Closing(s). At any time and from time to time during the 90 day period following the Initial Closing (the
Additional Closing Period), the Company may, at one or more additional closings (each an Additional Closing), without obtaining the signature, consent or permission of Investor, offer and sell to
other investors (the New Investors), at a price of $1.80 per Share, up to that number of Shares that is equal to 8,333,333 Shares less the number of Shares actually issued and sold by the Company at the Initial Closing. New
Investors may include persons or entities who are already owners of shares of the Companys Series C Preferred Stock or other capital stock. At least one New Investor must be an institutional investor that purchases a minimum of 1,111,111
Shares; provided, that this requirement may be waived by holders of a majority of the then-outstanding Series C Preferred Stock.

(b)
Amendments. The Company and the New Investors purchasing Shares at each Additional Closing will execute a Subscription Agreement in substantially the same form hereof, and the New Investors will, to the extent not already a party thereto,
execute counterpart signature pages to the Investors Rights Agreement (as defined in Section 4.6), the ROFR Agreement (as defined in Section 4.7) and the Voting Agreement (as defined in Section 4.8) (the Investors Rights
Agreement, ROFR Agreement and Voting Agreement, collectively, the Related Agreements). Such New Investors will, upon delivery to the Company of such signature pages, become parties to, and bound by, the Related Agreements,
each to the same extent as if they had been an Investor at the Initial Closing.



1



---

(c) Status of New Investors. Upon the completion of each Additional Closing as provided in this
Section 1.2, each New Investor will be deemed to be an Investor for all purposes of the Related Agreements.

2.
Representations and Warranties of the Company. The Company hereby represents and warrants to Investor, that the statements in the following paragraphs of this Section 2 are all true and complete as of October 15, 2007:

2.1 Organization, Good Standing and Qualification. The Company is a corporation duly organized, validly existing and in good standing under the
laws of the State of Delaware. The Company is duly qualified to transact business and is in good standing in each jurisdiction in which the failure to so qualify would reasonably be expected to have a material adverse effect on (a) the present
or future business, assets, operations, of the Company, taken as a whole or (b) the Companys ability to perform this Agreement or the Related Agreements (as defined below) (a Material Adverse Effect).

2.2 Capitalization and Voting Rights.

(a) Authorized Stock. As of October 15, 2007, there are authorized for issuance 40,000,000 shares of common stock, par value $0.0001 (the Common Stock) and 19,173,252 shares of preferred stock, par
value $0.0001 (the Preferred Stock), of which 5,000,000 shares are designated as Series A Convertible Preferred Stock (Series A Preferred Stock), 5,673,252 shares are designated as Series B Senior
Convertible Preferred Stock (Series B Preferred Stock), and 8,500,000 shares are designated as Series C Senior Convertible Preferred Stock (Series C Preferred Stock). As of October 15,
2007, the outstanding stock of the Company consists of the following:

(i) Common Stock. Three Million Seven Hundred
Fifty Five Thousand (3,755,000) shares of issued and outstanding Common Stock.

(ii) Five Million
(5,000,000) shares of issued and outstanding Series A Preferred Stock, which shares of Series A Preferred Stock are convertible into 1.680096462 shares of Common Stock upon (x) an involuntary or voluntary liquidation, dissolution and
winding up of the Company, (y) a Deemed Liquidation Event (as such term is defined in the Restated Certificate) or (z) a Qualified IPO (as such term is defined in the Restated Certificate).

(iii) Five Million Six Hundred Seventy Three Thousand Two Hundred and Fifty Two (5,673,252) shares of issued and outstanding Series
B Preferred Stock, which shares of Series B Preferred Stock are convertible into 1.000042304 shares of Common Stock.

(iv)
No shares of issued and outstanding Series C Preferred Stock.

Upon the Initial Closing, the rights, preferences and privileges of each series of Preferred
Stock will be as stated in the Restated Certificate and as provided by law.

(b) Valid Issuance. The outstanding shares of Common
Stock and Preferred Stock are all duly and validly authorized and issued, fully paid and nonassessable.

(c) Rights to Acquire.
Except for (i) the conversion privileges of the Preferred Stock, (ii) the rights of first refusal (the Existing Refusal Rights) provided in Section 4 of the Amended and Restated Investors Rights
Agreement, dated as of April 20, 2007, by and among the Company



2



---

and such investors (the Existing Investors Rights Agreement), (iii) the Five Million (5,000,000) shares of Common
Stock reserved for issuance under to employees, consultants and/or directors pursuant to the Companys 2006 Stock Option/Stock Issuance Plan (the Option Plan), of which options to purchase an aggregate of Three Million
Three Hundred Seventy-Eight Thousand Two Hundred Twenty Seven (3,778,227) shares of Common Stock granted to employees, consultants and/or directors are currently outstanding, (iv) outstanding warrants to purchase Sixty Four Thousand
(64,000) shares of Common Stock and (vi) outstanding restricted stock units for the issuance of One Million One Hundred and Ten Thousand and Ten (1,104,010) shares of Common Stock, there are not outstanding any options, warrants,
rights (including conversion or preemptive rights) or agreements for the purchase or acquisition from the Company of any shares of its capital stock. In connection with the Initial Closing, the Existing Investors Rights Agreement will be
amended and restated in its entirety to read in the form attached to this Agreement as Exhibit A.

(d) Voting of Shares.
Other than the Amended and Restated Voting Agreement, dated as of April 20, 2007, by and among the Company and certain holders of Common Stock and Preferred Stock signatory thereto (the Existing Voting Agreement), the
Company is not a party or subject to any agreement or understanding and, to the Companys knowledge, there is no agreement or understanding between any persons and/or entities which affects or relates to the voting or giving of written consents
with respect to any security or by a director of the Company. In connection with the Initial Closing, the Existing Voting Agreement will be amended and restated in its entirety to read in the form attached to this Agreement as Exhibit B.

(e) Market Stand-Off. To the Companys best knowledge, all outstanding shares of preferred stock of the Company and all
capital stock of the Company issuable upon the exercise of outstanding employee incentive stock options are subject to a one hundred eighty (180) day market stand-off restriction upon an initial public offering by the Company
resulting in at least $20 Million in gross proceeds pursuant to a registration statement filed with the Securities and Exchange Commission (SEC) pursuant to the Securities Act of 1933, as amended (the
Act).

2.3 Subsidiaries. Except for 100% ownership of Unidym Acquisition, LLC (the
Acquisition LLC) formed for the purpose of the merger with Carbon Nanotechnologies, Inc. and the minority ownership position in Nanotech Catheter Solutions LLC pursuant to the license agreement with Nanotech Catheter
Solutions, the Company does not presently own or control, directly or indirectly, any interest in any other corporation, association, or other business entity. The Company is not a participant in any joint venture, partnership, or similar
arrangement.

2.4 Authorization. All corporate action on the part of the Company, its officers, directors and stockholders
necessary for the authorization, execution and delivery of this Agreement, the Related Agreements, the performance of all obligations of the Company hereunder and thereunder, and the authorization, sale and issuance of the Shares being sold
hereunder, and the Common Stock issuable upon conversion of the Shares, has been taken or will be taken prior to the Initial Closing. As of the Initial Closing, this Agreement and the Related Agreements constitute valid and legally binding
obligations of the Company, enforceable in accordance with their respective terms, except (i) as limited by applicable bankruptcy, insolvency, reorganization, moratorium and other laws of general application affecting enforcement of
creditors rights generally, (ii) as limited by laws relating to the availability of specific performance, injunctive relief or other equitable remedies, and (iii) to the extent the indemnification provisions contained in the Related
Agreements may be limited by applicable federal or state securities laws.

2.5 Valid Issuance of Preferred and Common Stock. The
Shares that are being purchased by Investor hereunder, when issued, sold and delivered in accordance with the terms of this Agreement for the consideration expressed herein, will be duly and validly issued, fully paid and nonassessable and will be
free of restrictions on transfer, other than restrictions on transfer (i) under this



3



---

Agreement, the Investors Rights Agreement and the ROFR Agreement, (ii) under applicable state and federal securities laws and (iii) otherwise
imposed as a result of actions taken by Investor. The Common Stock issuable upon conversion of the Shares purchased under this Agreement has been duly and validly reserved for issuance and, upon issuance in accordance with the terms of the
Companys Restated Certificate of Incorporation in the form attached hereto as Exhibit C (the Restated Certificate), will be duly and validly issued, fully paid and nonassessable and will be free of restrictions
on transfer, other than restrictions on transfer (i) under this Agreement, the Investors Rights Agreement and the ROFR Agreement, (ii) under applicable state and federal securities laws and (iii) otherwise imposed as a result of
actions taken by Investor.

2.6 Governmental Consents. No consent, approval, order or authorization of, or registration,
qualification, designation, declaration or filing with, any federal, state or local governmental authority on the part of the Company is required in connection with the consummation of the transactions contemplated by this Agreement and the Related
Agreements, except for such consents, approvals, orders, authorizations, registrations, qualifications, designations, declarations or filings which are not required to be obtained prior to the Initial Closing, and such filings as are required
pursuant to applicable federal and state securities laws and blue sky laws, which filings will be effected within the required statutory period.

2.7 Offering. Subject in part to the truth and accuracy of Investors representations set forth in Section 2.20 of this Agreement, the offer, sale and issuance of the Shares as contemplated by this Agreement are exempt from
the registration requirements of the Act, and the qualification or registration requirements of applicable state blue sky laws, as such registration requirements and laws currently exist.

2.8 Litigation. There is no action, suit, proceeding or investigation pending or, to the Companys knowledge, currently threatened in
writing against the Company that questions the validity of this Agreement or the Related Agreements, or the right of the Company to enter into such agreements or to consummate the transactions contemplated hereby and thereby, or that would
reasonably be expected to result in a Material Adverse Effect. The Company is not a party or subject to the provisions of any order, writ, injunction, judgment or decree of any court or government agency or instrumentality. There is no action, suit,
proceeding or investigation by the Company currently pending or that the Company currently intends to initiate.

2.9 Proprietary
Information Agreements. Each current employee of the Company has executed a Proprietary Information and Inventions Agreement in substantially the form provided to Investor upon request by Investor. The Company is not aware that any such employee
is in violation thereof.

2.10 Compliance with Other Instruments. The Company is not in violation of any provision of its Restated
Certificate or Bylaws nor, to its knowledge, of any instrument, judgment, order, writ, decree or contract, statute, rule or regulation to which the Company is subject and a violation of which would reasonably be expected to have a Material Adverse
Effect. The execution, delivery and performance of this Agreement and the Related Agreements, and the consummation of the transactions contemplated hereby and thereby will not result in any such violation, or be in conflict with or constitute, with
or without the passage of time and giving of notice, either a default under any such provision or an event that results in the creation of any lien, charge or encumbrance upon any assets of the Company or the suspension, revocation, impairment,
forfeiture or nonrenewal of any material permit, license, authorization or approval applicable to the Company, its business or operations or any of its assets or properties.

2.11 Agreements; Action. Except for agreements explicitly contemplated hereby, there are no agreements or understandings between the Company and
any of its officers, directors, affiliates or any affiliate thereof (except for transactions with Acquisition LLC, of which the Company is a wholly



4



---

owned subsidiary, and except for quarterly allocations for services performed by Arrowhead) and except as set forth on Schedule 2.11,

(a) there are no agreements, understandings, instruments, contracts, judgments, orders, writs or decrees to which the Company is a party or by which it
is bound that may involve (i) obligations (contingent or otherwise) of, or payments to the Company, in excess of $10,000, other than obligations of, or payments to, the Company arising from purchase or sale agreements entered into in the
ordinary course of business, or (ii) provisions materially restricting the development, manufacture or distribution of the Companys products or services, and

(b) The Company has not (i) declared or paid any dividends or authorized or made any distribution upon or with respect to any class or series of its capital stock, (ii) incurred any indebtedness for money
borrowed or any other liabilities individually in excess of $10,000 or, in the case of indebtedness and/or liabilities individually less than $10,000, in excess of $25,000 in the aggregate, (iii) made any loans or advances to any person, other
than ordinary advances for travel expenses, or (iv) sold, exchanged or otherwise disposed of any of its assets or rights.

For the purposes of
subsections (b) and (c) above, all indebtedness, liabilities, agreements, understandings, instruments and contracts involving the same person or entity (including persons or entities the Company has reason to believe are affiliated
therewith) shall be aggregated for the purpose of meeting the individual minimum dollar amounts of such subsections.

2.12
Related-Party Transactions. No employee, officer or director of the Company or member of his or her immediate family is indebted to the Company, nor is the Company indebted (or committed to make loans or extend or guarantee credit) to any of
them. To the best of the Companys knowledge, other than in Arrowhead Research Corporation, a Delaware corporation (Arrowhead) or in any of Arrowheads subsidiaries or Acquisition LLC, none of such persons has any
direct or indirect ownership interest in any firm or corporation with which the Company is affiliated or with which the Company has a business relationship, or any firm or corporation that competes with the Company, except that employees, officers
or directors of the Company and members of their immediate families may own stock in publicly traded companies that may compete with the Company. No member of the immediate family of any officer or director of the Company is directly or indirectly
interested in any material contract with the Company.

2.13 No Undisclosed Liabilities. Except as set forth in the consolidated
financial statements of Arrowhead at June 30, 2007 and for the three months then ended, the Company does not have any liabilities (whether accrued, absolute, unliquidated, contingent or otherwise, whether or not known to the Company, whether
due or to become due and regardless of when asserted) arising out of transactions entered into at or prior to the Initial Closing, or any action or inaction at or prior to the Initial Closing or any state of facts existing at or prior to the Initial
Closing other than (i) liabilities and obligations that have arisen after June 30, 2007 in the ordinary course of business (none of which is material and none of which is a liability resulting from breach of contract, breach of warranty,
tort, infringement, claim or lawsuit), (ii) obligations under contracts and commitments incurred in the ordinary course of business that would not be required to be reflected in financial statements prepared in accordance with generally
accepted accounting principles, or (iii) $500,000 transferred by Arrowhead to the Company to purchase Shares under the same terms and conditions as the New Investors. The Company is not a guarantor or indemnitor of any indebtedness of any other
person, firm or corporation.

2.14 Permits. The Company has all franchises, permits, licenses and any similar authority necessary
for the conduct of its business as now being conducted by it, except to the extent the lack of which would not reasonably be expected to have a Material Adversely Effect. The Company is not in



5



---

default under any of such franchises, permits, licenses or other similar authority which would be reasonably expected to have a Material Adverse Effect.

2.15 Environmental and Safety Laws. To its knowledge, the Company is not in violation of any applicable statute, law or regulation
relating to the environment or occupational health and safety, and, to its knowledge, no material expenditures are or will be required in order to comply with any such existing statute, law or regulation.

2.16 Disclosure. The Company has fully provided Investor with all the information that Investor has requested in writing for deciding whether to
purchase the Shares. Neither this Agreement (including all the exhibits and schedules hereto) nor any other statements or certificates made or delivered in connection herewith contains any untrue statement of a material fact or omits to state a
material fact necessary to make the statements herein or therein not misleading in light of the circumstances under which they were made.

2.17 Registration Rights. Except as provided in the Existing Investors Rights Agreement and except for the Shares to be sold in this Offering, the Company has not granted or agreed to grant any registration rights, including
piggyback rights, to any person or entity. In connection with the Initial Closing, the Existing Investors Rights Agreement will be amended and restated in its entirety to read in the form attached to this Agreement as Exhibit A.

2.18 Title to Property and Assets. The property and assets used by the Company in its business are owned by the Company free and
clear of all mortgages, liens, loans and encumbrances, except for (i) statutory liens for the payment of current taxes that are not yet delinquent and (ii) for liens, encumbrances and security interests that arise in the ordinary course of
business and minor defects in title, none of which, individually or in the aggregate, would reasonably be expected to have a Material Adverse Effect. With respect to the property and assets it leases, the Company is in compliance with such leases
and, to its knowledge, holds a valid leasehold interest free of any liens, claims or encumbrances, subject to clauses (i)-(ii) of the foregoing sentence, except to the extent the failure to be in compliance or hold a valid leasehold interest would
not reasonably be expected to have a Material Adverse Effect.

2.19 Labor Agreements and Actions. The Company is not bound by or
subject to any contract, commitment or arrangement with any labor union, and no labor union has requested or, to the Companys knowledge, has sought to represent any of the employees, representatives or agents of the Company. There is no strike
or other labor dispute involving the Company pending, or to the Companys knowledge, threatened in writing, that would reasonably be expected to have a Material Adverse Effect, nor is the Company aware of any labor organization activity
involving its employees. The Company is not aware that any officer or key employee, or that any group of key employees, intends to terminate their employment with the Company, nor does the Company have a present intention to terminate the employment
of any of the foregoing. The employment of each officer and employee of the Company is terminable at the will of the Company. The Company is not a party to or bound by any currently effective employment contract, deferred compensation agreement,
bonus plan, incentive plan, profit sharing plan, retirement agreement or other employee compensation agreement, except that pursuant to his employment arrangement, the CEO of the Company is entitled to certain severance payments and acceleration of
options if he is terminated or constructively terminated without cause. To its knowledge, the Company has complied in all material respects with all applicable state and federal equal employment opportunity and other laws related to employment.

2.20 Brokers Fees. The Company expects to pay third-party finders or advisors finders fees (in cash and/or equity) for
Shares placed by such third party. For the sake of clarity, no finders fees will be paid for Shares not placed by a third-party finder or advisor.



6



---

2.21 Intellectual Property. To its knowledge, the Company has rights to all intellectual property
it needs to operate its business as currently conducted, other than intellectual property that it reasonably believes is invalid or it can obtain rights to through a license or cross-licensing arrangement.

2.22 Tax Returns and Payments. There are no federal, state, county, local or foreign taxes dues and payable by the Company which have not been
timely paid. There are no accrued and unpaid federal, state, country, local or foreign taxes of the Company which are due, whether or not assessed or disputed. There have been no examinations or audits of any tax returns or reports by any
applicable federal, state, local or foreign governmental agency. The Company has duly and timely filed all federal, state, county, local and foreign tax returns required to have been filed by it and there are in effect no waivers of applicable
statutes of limitations with respect to taxes for any year.

2.23 Insurance. The Company has in full force and effect fire and
casualty insurance policies with extended coverage, sufficient in amount (subject to reasonable deductions) to allow it to replace any of its properties that might be damaged or destroyed.

2.24 ERISA. The Company has made all required contributions and has no liability to any such employee benefit plan, other than liability for
health plan continuation coverage described in Part 6 of Title I(B) of Employee Retirement Income Security Act of 1974, as amended, and has complied in all material respects with all applicable laws for any such employee benefit plan.

3. Representations and Warranties of Investor. Investor hereby represents, warrants and covenants to the Company that:

3.1 Authorization. Investor has full power and authority to enter into this Agreement and the Related Agreements to which it is a party, and
each such agreement constitutes its valid and legally binding obligation, enforceable in accordance with its terms except (i) as limited by applicable bankruptcy, insolvency, reorganization, moratorium and other laws of general application
affecting enforcement of creditors rights generally, (ii) as limited by laws relating to the availability of specific performance, injunctive relief or other equitable remedies, and (iii) to the extent the indemnification provisions
contained in the Related Agreements may be limited by applicable federal or state securities laws.

3.2 Purchase Entirely for Own
Account. This Agreement is made with Investor in reliance upon Investors representation to the Company, which by Investors execution of this Agreement, Investor hereby confirms that the Shares will be acquired for investment for
Investors own account, not as a nominee or agent, and not with a view to the resale or distribution of any part thereof, and that Investor has no present intention of selling, granting any participation in or otherwise distributing the same.
By executing this Agreement, Investor further represents that Investor does not have any contract, undertaking, agreement or arrangement with any person to sell, transfer or grant participations to such person or to any third person, with respect to
any of the Shares.

3.3 Disclosure of Information. Investor believes it has received all the information it considers necessary or
appropriate for deciding whether to purchase the Shares. Investor further represents that it has had an opportunity to ask questions and receive answers from the Company regarding the terms and conditions of the offering of the Shares and the
business, properties, prospects and financial condition of the Company. The foregoing, however, does not limit or modify the representations and warranties of the Company in Section 2 of this Agreement or the right of Investor to rely thereon.

3.4 Investment Experience. Investor is an investor in securities of companies in the development stage and acknowledges that
he/she/it is able to bear the economic risk of its investment, and has such knowledge and experience in financial or business matters that it is capable of evaluating the



7



---

merits and risks of the investment in the Shares. If other than an individual, Investor also represents it has not been organized for the purpose of
acquiring the Shares.

3.5 Accredited Investor. Investor is an accredited investor within the meaning of SEC Rule 501
of Regulation D and has reviewed Schedule 3.5 before making this representation to the Company. All of the information in the Investor Questionnaire delivered by Investor to the Company in connection with Investors purchase of the Shares
remains complete, true and correct as of the Initial Closing or the Additional Closing, as applicable.

3.6 Restricted Securities.
Investor understands that the Shares it is purchasing are characterized as restricted securities under the federal securities laws inasmuch as they are being acquired from the Company in a transaction not involving a public offering, and
that under such laws and applicable regulations, such Shares may be resold without registration under the Act only in certain limited circumstances. In the absence of an effective registration statement covering the Shares or an available exemption
from registration under the Act, the Shares (and any Common Stock issued on conversion of the Shares) must be held indefinitely.

3.7
No Brokers. Investor has not taken any action which would give rise to any claim by any person for brokerage commissions, finder's fees or similar payments relating to this Agreement or the transactions contemplated hereby.

3.8 Legends. It is understood that the certificates evidencing the Shares may bear one or all of the following legends:

(a) These securities have not been registered under the Securities Act of 1933, as amended. They may not be sold, offered for sale, pledged or
hypothecated in the absence of a registration statement in effect with respect to the securities under such Act or an opinion of counsel satisfactory to the Company that such registration is not required or unless sold pursuant to Rule 144 of such
Act.

(b) Legends required to indicate that the Shares are subject to the terms of the Investors Rights Agreement and ROFR
Agreement.

(c) Any legend required by applicable laws.

4. Conditions to Investors Obligations at Closing. The following conditions must be satisfied by the Company, unless waived by Investor, in Investors sole and absolute discretion.

4.1 Representations and Warranties. The representations and warranties of the Company contained in Section 2 shall be true on and as of the
Initial Closing with the same effect as though such representations and warranties had been made on and as of the date of the Initial Closing.

4.2 Performance. The Company shall have performed and complied with all agreements, obligations and conditions contained in this Agreement that are required to be performed or complied with by it on or before the Initial Closing.

4.3 Qualifications. All authorizations, approvals or permits, if any, of any governmental authority or regulatory body of the
United States or of any state that are required in connection with the lawful issuance and sale of the Shares pursuant to this Agreement shall be duly obtained and effective, other than such authorizations, approvals or permits or other filings
which may be timely made after such issuance and sale of the Shares.



8



---

4.4 Restated Certificate. The Company shall have filed the Restated Certificate with the Delaware
Secretary of State.

4.5 Proceedings and Documents. All corporate and other proceedings in connection with the transactions
contemplated at the Initial Closing and all documents incident thereto shall be reasonably satisfactory in form and substance to Investor, and Investor shall have received all such counterpart original and certified or other copies of such documents
as may be reasonably requested.

4.6 Investors Rights Agreement. The Company, certain of the Companys existing
stockholders and Investor shall have executed and delivered the Amended and Restated Investors Rights Agreement in the form attached to this Agreement as Exhibit B (the Investors Rights Agreement).

4.7 ROFR Agreement. The Company, certain of the Companys existing stockholders, and Investor shall have executed and
delivered the Amended and Restated Right of First Refusal and Co-Sale Agreement in the form attached to this Agreement as Exhibit C (the ROFR Agreement).

4.8 Voting Agreement. The Company, certain of the Companys existing stockholders and Investor shall have executed and delivered the Amended
and Restated Voting Agreement in the form attached to this Agreement as Exhibit D (the Voting Agreement).

4.9 Waiver of Existing Refusal Rights. In connection with the transactions contemplated by this Agreement, the holders of Preferred Stock shall have waived their Existing Refusal Rights.

4.10 Minimum Shares Purchased. A minimum of 4,444,444 Shares shall be purchased by investors at the Initial Closing for a minimum aggregate
purchase price of $7,999,999.20. Of those Shares, a minimum of 1,111,111 Shares must be purchased at the Initial Closing by an institutional investor.

4.11 General. The holders of Common Stock and/or Preferred Stock shall have amended any other agreement or arrangement, or given any further consent required to allow the Company to execute and perform this
Agreement and the Related Agreements.

5. Conditions to the Companys Obligations at Closing. The following conditions must be
satisfied by Investor, unless waived in writing by the Company, in the Companys sole and absolute discretion.

5.1 Representations
and Warranties. The representations and warranties of the Investor contained in Section 3 shall be true on and as of the Initial Closing or the Additional Closing (as applicable) with the same effect as though such representations and
warranties had been made on and as of the date of such closing.

5.2 Payment of the Purchase Price. Investor shall have delivered
to the Company the purchase price for the Shares.

5.3 Restated Certificate. The Company shall have filed the Restated Certificate
with the Delaware Secretary of State.

5.4 Securities Exemptions. The offer and sale of the Shares to Investor pursuant to this
Agreement shall be exempt from the registration requirements of the



9



---

Securities Act of 1933, as amended, the qualification requirements of the California General Corporation Law and the registration and/or qualification
requirements of all other applicable state securities laws.

5.5 Proceedings and Documents. All corporate and other proceedings in
connection with the transactions contemplated at the Initial Closing or the Additional Closing (as applicable) and all documents incident thereto shall be reasonably satisfactory in form and substance to the Company, and the Company shall have
received all such counterpart original and certified or other copies of such documents as may be reasonably requested.

5.6
Investors Rights Agreement. The Company, certain of the Companys existing stockholders, and Investor shall have executed and delivered the Investors Rights Agreement.

5.7 ROFR Agreement. The Company, certain of the Companys existing stockholders, and Investor shall have executed and delivered the ROFR
Agreement.

5.8 Voting Agreement. The Company, certain of the Companys existing stockholders, Arrowhead, and Investor shall
have executed and delivered the Voting Agreement.

5.9 Waiver of Existing Refusal Rights. In connection with the transactions
contemplated by this Agreement, the holders of Preferred Stock shall have waived the Existing Refusal Rights.

5.10 Minimum Shares
Purchased. A minimum of 4,444,444 Shares shall be purchased by investors at the Initial Closing for a minimum aggregate purchase price of $7,999,999.20. Of those Shares, a minimum of 1,111,111 Shares must be purchased at the Initial Closing by
an institutional investor.

5.11 General. The holders of Common Stock and/or Preferred Stock shall have amended any other agreement
or arrangement, or given any further consent required to allow the Company to execute and perform this Agreement and the Related Agreements.

6. Miscellaneous.

6.1 Survival. The warranties, representations and covenants of the Company and Investor contained
in or made pursuant to this Agreement shall survive the execution and delivery of this Agreement and the Initial Closing or the Additional Closing (as applicable) and shall in no way be affected by any investigation of the subject matter thereof
made by or on behalf of Investor or the Company.

6.2 Successors and Assigns. Except as otherwise provided herein, the terms and
conditions of this Agreement shall inure to the benefit of, and be binding upon, the respective successors and assigns of the parties (including transferees of any Shares). Nothing in this Agreement, express or implied, is intended to confer upon
any party, other than the parties hereto or their respective successors and assigns, any rights, remedies, obligations or liabilities under or by reason of this Agreement, except as expressly provided in this Agreement.

6.3 Governing Law. This Agreement shall be governed by and construed under the laws of the State of California as applied to agreements among
California residents entered into and to be performed entirely within California, except with respect to conflict of laws.

6.4 Titles
and Subtitles. The titles and subtitles used in this Agreement are used for convenience only and are not to be considered in construing or interpreting this Agreement.



10



---

6.5 Notices. All notices required or permitted hereunder shall be in writing and shall be deemed
effectively given: (i) upon personal delivery to the party to be notified, (ii) when sent by confirmed telex or facsimile if sent during normal business hours of the recipient, if not, then on the next business day; (iii) five
(5) days after having been sent by registered or certified mail, return receipt requested, postage prepaid; or (iv) one (1) day after deposit with a nationally recognized overnight courier, specifying next day delivery, with written
verification of receipt. All communications shall be sent to the address as set forth on the signature page hereof or at such other address as such party may designate by ten (10) days advance written notice to the other parties hereto.

6.6 Responsibility for Brokers Fees. Investor indemnifies and holds harmless the Company from any liability for any commission or
compensation in the nature of a finders fee (and the costs and expenses of defending against such liability or asserted liability) for which Investor or any of its officers, partners, employees or representatives is responsible. The Company
indemnifies and holds harmless Investor from any liability for any commission or compensation in the nature of a finders fee (and the costs and expenses of defending against such liability or asserted liability) for which the Company or any of
its officers, employees or representatives is responsible.

6.7 Aggregation of Stock. All issued and outstanding shares of the
Series C Preferred Stock and Common Stock issued upon conversion thereof held or acquired by affiliated entities or persons shall be aggregated together for the purpose of determining the availability of any rights under this Agreement.

6.8 Amendments and Waivers. Any term of this Agreement may be amended, and the observance of any term of this Agreement may be waived (either
generally or in a particular instance and either retroactively or prospectively), only with the written consent of the Company and Investor.

6.9 Severability. If one or more provisions of this Agreement are held to be unenforceable under applicable law, such provision shall be excluded from this Agreement and the balance of the Agreement shall be interpreted as if such
provision were so excluded and shall be enforceable in accordance with its terms.

6.10 Entire Agreement. This Agreement and the
documents referred to herein constitute the entire agreement among the parties, and this Agreement supersedes all prior written and oral agreements, and all contemporaneous oral agreements, relating to the subject matter hereof.

6.11 Counterparts; Facsimile/PDF Signatures. This Agreement may be executed in two or more counterparts, and by facsimile signatures or portable
document format (.pdf or similar format), each of which shall be deemed an original, but all of which together shall constitute one and the same instrument.

[SIGNATURE PAGE FOLLOWS]



11



---

[Company Signature Page to Subscription Agreement]



|                |  |                        |  |                                       
|--------------- |  | ---------------------- |  | --------------------------------------
|Dated: 10/29/07 |  | COMPANY:              
|                | 
|                |  | UNIDYM, INC.          
|                |  | a Delaware corporation
|                |  |                       
|                |  | By:                    |  | /s/ ARTHUR L. SWIFT                   
|                |  |                        |  | Arthur L. Swift                       
|                |  |                        |  | CEO & President                       
|                |  |                       
|                |  | Address:               |  | 1430 Obrien Drive Menlo Park, CA
94025



---

[Investor Signature Page to Subscription Agreement]

I HEREBY REPRESENT THAT I HAVE READ AND UNDERSTOOD THE SUBSCRIPTION AGREEMENT.

Dated: October 29, 2007

Subscription: I hereby subscribe for the following number of Shares at
the Purchase Price indicated:

Total Number of Shares: 1,666,667

Total Purchase Price ($1.80 Per Share): $3,000,000.00

Arrowhead Research Corporation

Please print the exact name(s) in which the Shares will be issued

Print Name of Signer: R Bruce Stewart



|           |  |                     |  |  |  | 
|---------- |  | ------------------- |  |  |  | 
|Signature: |  | /s/ R Bruce Srewart |  |  |  | 

Title of Signer (if purchaser is an entity): CEO

Social Security # or Tax Id#: 46-0408024



|         |  |                            |  |  |  | 
|-------- |  | -------------------------- |  |  |  | 
|Address: |  | 201 S. Lake Ave, Suite 703 |  |  |  | 

City, State & Zip: Pasadena, CA 91101

Phone: (626) 304-2400

Facsimile:
(626) 304-3401

Email:



---

Exhibit A

Form of

Amended and Restated Investors Rights Agreement



---

AMENDED AND RESTATED INVESTORS RIGHTS AGREEMENT

This Amended and Restated Investors Rights Agreement (the Agreement) is made as of the October
[], 2007, by and between Unidym, Inc., a Delaware corporation (the Company), each of the investors listed on Schedule A hereto (each of which is referred to in this Agreement as an
Investor) and each of the stockholders listed on Schedule B hereto (each of which is referred to in this Agreement as a Stockholder).

RECITALS

WHEREAS, the Company, certain of the Investors, and certain of
the Stockholders entered into an Amended and Restated Investors Rights Agreement dated as of April 20, 2007 (the Prior Agreement);

WHEREAS, certain new investors (the Series C Investors) have agreed to purchase shares of the Companys Series C Preferred Stock (the Series C Stock)
pursuant to a certain Series C Preferred Stock Subscription Agreement between the Company and each such Series C Investor dated of even date herewith or hereafter (each a Series C Agreement), and the Series C
Agreement provides that, as a condition to the Series C Investors purchase of Series C Stock thereunder, the Company will enter into this Agreement and the Series C Investor will be granted the rights set forth herein;

WHEREAS, the Company and the parties to the Prior Agreement desire to enter into this Agreement in order to amend, restate and
replace their rights and obligations under the Prior Agreement with the rights and obligations set forth in this Agreement. Section 6.8 of the Prior Agreement provides that the Prior Agreement may be amended by the written consent of
(i) the Company, (ii) the holders of at least a majority of the Registrable Securities then outstanding and held by the Stockholders and (iii) the holders of at least a majority of the Registrable Securities then outstanding and held
by the Investors;

WHEREAS, the Investors, Stockholders and the Company hereby agree that this Agreement shall govern, among other
things, the rights of the Investors to cause the Company to register shares of the Companys Common Stock issuable to the Investors, to participate in future equity offerings by the Company and certain other matters as set forth in this
Agreement; and

WHEREAS, the Company has provided its written consent to amend the Prior Agreement, the undersigned Stockholders to
this Agreement hold a majority of the Registrable Securities outstanding and the undersigned Investors to this Agreement hold a majority of the Registrable Securities outstanding.

NOW, THEREFORE, in consideration of the foregoing and the promises and covenants contained herein, the sufficiency of which is hereby
acknowledged, the parties agree as follows:

1. Definitions. For purposes of this Agreement:

1.1. The term Affiliate means with respect to any individual, corporation, partnership, association, trust, or any other entity (in
each case, a Person), any Person which, directly or indirectly, controls, is controlled by or is under common control with such Person, including, without limitation, any general partner, officer or director of such Person and any
venture capital fund now or hereafter existing which is controlled by or under common control with one or more general partners or shares the same management company with such Person.

1.2. Arrowhead means to Arrowhead Research Corporation, a Delaware corporation.



---

1.3. The term Board means the Board of Directors of the Company.

1.4. The term Certificate of Incorporation means the Certificate of Incorporation of the Company, as amended to date.

1.5. The term Common Stock means shares of the Companys common stock, par value $0.0001 per share.

1.6. The term Exchange Act means the Securities Exchange Act of 1934, as amended, and the rules and regulations promulgated
thereunder.

1.7. The term Form S-3 means such form under the Securities Act as in effect on the date hereof or any
registration form under the Securities Act subsequently adopted by the SEC which permits inclusion or incorporation of substantial information by reference to other documents filed by the Company with the SEC.

1.8. The term GAAP means generally accepted accounting principles.

1.9. The term Holder means any Person owning or having the right to acquire Registrable Securities or any assignee thereof in
accordance with Section 6.2 hereof.

1.10. The term Initiating Holders means, collectively, any Holders who
properly initiate a registration request under this Agreement.

1.11. The term Investor means the Investors listed on
Schedule A hereto.

1.12. The term Investor-Designated Director means any Arrowhead Director (as defined in the
Voting Agreement).

1.13. The term IPO means the Companys first underwritten public offering of its Common Stock
pursuant to an effective registration statement under the Securities Act, resulting in at least Twenty Million ($20,000,000) of gross proceeds to the Company.

1.14. The term New Securities means equity or debt securities of the Company, whether now authorized or not, or rights, options, or warrants to purchase said equity securities, or securities of any
type whatsoever that are, or may become, convertible into or exchangeable into or exercisable for said equity securities.

1.15. The term
Qualified Public Offering means the Companys firm commitment underwritten public offering of its Common Stock pursuant to an effective registration statement under the Securities Act, resulting in a per share price to the
public of at least Three Dollars ($3.00) (subject to appropriate adjustment in the event of any stock dividend, stock split, combination or other similar recapitalization with respect to the Common Stock).

1.16. The term register, registered, and registration refer to a registration effected by
preparing and filing a registration statement or similar document in compliance with the Securities Act, and the declaration or ordering of effectiveness of such registration statement or document.

1.17. The term Registrable Securities means (i) the Common Stock issuable or issued upon conversion of the Series A Preferred
Stock, the Series B Preferred Stock or the Series C Preferred Stock (ii) shares of Common Stock issued to George Gruner (provided, however, that such shares of Common



2



---

Stock shall not be deemed Registrable Securities and the holders of such Common Stock shall not be deemed Holders for the purposes of the first paragraph of
Sections 2.1 or 2.11 or Sections 2.12 and 6.8), (iii) any Common Stock of the Company issued as (or issuable upon the conversion or exercise of any warrant, right or other security which is issued as) a dividend or
other distribution with respect to, or in exchange for or in replacement of the shares referenced in clauses (i) and (ii) above, and (iv) any Common Stock of the Company held by Arrowhead, excluding in all cases, however, (a) any
Registrable Securities sold by a Holder in a transaction in which such Holders rights under Section 2 hereof are not assigned, (b) any shares for which registration rights have terminated pursuant to
Section 2.15 of this Agreement, or (c) any Registrable Securities registered or sold to the public either pursuant to a registration statement or SEC Rule 144.

1.18. The term Registrable Securities then outstanding means the number of shares determined by adding the number of shares of Common
Stock outstanding which are, and the number of shares of Common Stock issuable pursuant to then exercisable or convertible securities which are, Registrable Securities.

1.19. The term Sale of the Company means (A) a transaction or series of related transactions in which a Person, or a group of related Persons, acquires from stockholders of the Company shares
representing fifty percent (50%) or more of the outstanding voting power of the Company, (B) a merger or consolidation in which (a) the Company is a constituent party or (b) a subsidiary of the Company is a constituent party and
the Company issues shares of its capital stock pursuant to such merger or consolidation,exceptany such merger or consolidation involving the Company or a subsidiary in which the shares of capital stock of the Company outstanding immediately
prior to such merger or consolidation continue to represent, or are converted or exchanged for shares of capital stock which represent, immediately following such merger or consolidation at least a majority, by voting power, of the capital stock of
(1) the surviving or resulting corporation or (2) if the surviving or resulting corporation is a wholly owned subsidiary of another corporation immediately following such merger or consolidation, the parent corporation of such surviving or
resulting corporation; or (C) the sale, lease, exclusive license, transfer or other disposition, in a single transaction or series of related transactions, by the Company or any subsidiary of the Company of all or substantially all the assets
of the Company and its subsidiaries taken as a whole except where such sale, lease, transfer or other disposition is to a wholly owned subsidiary of the Company.

1.20. The term SEC means the Securities and Exchange Commission.

1.21. The term
SEC Rule 144 means Rule 144 promulgated by the SEC under the Securities Act.

1.22. The term SEC Rule
144(k) means Rule 144(k) promulgated by the SEC under the Securities Act.

1.23. The term SEC Rule 145 means
Rule 145 promulgated by the SEC under the Securities Act.

1.24. The term Securities Act means the Securities Act of
1933, as amended, and the rules and regulations promulgated thereunder.

1.25. The term Series A Preferred Stock means
shares of the Companys Series A Preferred Stock, par value $0.0001 per share.



3



---

1.26. The term Series B Preferred Stock means shares of the Companys Series B
Preferred Stock, par value $0.0001 per share.

1.27. The term Series C Preferred Stock means shares of the
Companys Series C Preferred Stock, par value $0.0001 per share.

1.28. The term Violation means losses, claims,
damages, or liabilities (joint or several) to which a party hereto may become subject under the Securities Act, the Exchange Act or other federal or state law, insofar as such losses, claims, damages, or liabilities (or actions in respect thereof)
arise out of or are based upon any of the following statements, omissions or violations: (i) any untrue statement or alleged untrue statement of a material fact contained in such registration statement, including any preliminary prospectus or
final prospectus contained therein or any amendments or supplements thereto, (ii) the omission or alleged omission to state therein a material fact required to be stated therein, or necessary to make the statements therein not misleading, or
(iii) any violation or alleged violation by any other party hereto, of the Securities Act, the Exchange Act, any state securities law or any rule or regulation promulgated under the Securities Act, the Exchange Act or any state securities law.

1.29. The term Voting Agreement means the Amended and Restated Voting Agreement dated of even date herewith by and
among the Company, the Investors and Stockholders, as such agreement may be amended from time to time.

2. Registration Rights. The Company
covenants and agrees as follows:

2.1Request for Registration.

(a) If the Company shall receive at any time after the earlier of (i) 5 years after the date of this Agreement or (ii) 180 days after the
effective date of the first registration statement for a public offering of securities of the Company (other than a registration statement relating either to the sale of securities to employees of the Company pursuant to a stock option, stock
purchase or similar plan or a SEC Rule 145 transaction), a written request from the Holders who hold in excess of thirty percent (30%) of the Registrable Securities then outstanding that the Company file a registration statement under the
Securities Act covering the registration of the Registrable Securities then outstanding with an anticipated aggregate offering price (net of underwriting discounts and commissions) of at least Ten Million Dollars ($10,000,000), then the Company
shall:

(i) within ten (10) days of the receipt thereof, give written notice of such request to all Holders;

(ii) as soon as practicable, and in any event within sixty (60) days of the receipt of such request, file a
registration statement under the Securities Act covering all Registrable Securities which the Holders request to be registered, subject to the limitations of subsection 2.1(b), within twenty (20) days of the mailing of such notice by the
Company in accordance with Section 6.5; and

(iii) use its best efforts to cause such registration statement to
be declared effective by the SEC as soon as practicable.

(b) If the Initiating Holders intend to distribute the Registrable Securities
covered by their request by means of an underwriting, they shall so advise the Company as a part of their request made pursuant to subsection 2.1 (a) and the Company shall include such information in the written notice referred to in
subsection 2.1(a). The underwriter will be selected by the Company and shall be reasonably acceptable to a majority in interest of the Initiating Holders. In such event, the right of any Holder to include such Holders Registrable
Securities in such registration shall be conditioned upon such Holders



4



---

participation in such underwriting and the inclusion of such Holders Registrable Securities in the underwriting to the extent provided herein. All
Holders proposing to distribute their securities through such underwriting shall (together with the Company as provided in subsection 2.3(e)) enter into an underwriting agreement in customary form with the underwriter or underwriters selected
for such underwriting. Notwithstanding any other provision of this Section 2.1, if the underwriter advises the Initiating Holders in writing that marketing factors require a limitation of the number of shares to be underwritten, then the
Initiating Holders shall so advise all Holders of Registrable Securities which would otherwise be underwritten pursuant hereto, and the number of shares of Registrable Securities that may be included in the underwriting shall be allocated among all
Holders of Registrable Securities, including the Initiating Holders, in proportion (as nearly as practicable) to the number of Registrable Securities of the Company owned by each Holder; provided, however, that the number of shares of
Registrable Securities held by the Holders to be included in such underwriting shall not be reduced unless all other securities are first entirely excluded from the underwriting. To facilitate the allocation of shares in accordance with the above
provisions, the Company or the underwriters may round the number of shares allocated to any Holder to the nearest 100 shares.

(c) The
Company shall not be obligated to effect, or to take any action to effect, any registration



| | (i) | pursuant to this Section 2.1:
| | --- | -----------------------------

(i)
In any particular jurisdiction in which the Company would be required to execute a general consent to service of process in effecting such registration, unless the Company is already subject to service in such jurisdiction and except as may be
required under the Securities Act;

(ii) After the Company has effected two (2) registrations pursuant to this
Section 2.1 and such registrations have been declared or ordered effective;

(iii) If the Initiating Holders
propose to dispose of shares of Registrable Securities that may be immediately registered on Form S-3 pursuant to a request made pursuant to Section 2.11, below; or

(iv) If the Registrable Securities to be included in the registration statement could be sold without restriction under SEC Rule 144(k)
within a ninety (90) day period and the Company is currently subject to the periodic reporting requirements of Sections 12(g) or 15(d) of the Exchange Act, or



| | (ii) | pursuant to any other provision of this Agreement:
| | ---- | --------------------------------------------------

(i) In any particular jurisdiction in which the Company would be required to execute a general consent to service of process in effecting such registration, unless the Company is already subject to service in such
jurisdiction and except as may be required under the Securities Act; or

(ii) If the Registrable Securities to be included
in the registration statement could be sold without restriction under SEC Rule 144(k) within a ninety (90) day period and the Company is currently subject to the periodic reporting requirements of Sections 12(g) or 15(d) of the Exchange Act.



5



---

(d) Notwithstanding the foregoing, if the Company shall furnish to Holders requesting a registration
statement pursuant to this Section 2.1 a certificate signed by the Chief Executive Officer of the Company stating that in the good faith judgment of the Board it would be materially detrimental to the Company and its stockholders for
such registration statement to be filed and it is therefore necessary to defer the filing of such registration statement, the Company shall have the right to defer taking action with respect to such filing for a period of not more than ninety
(90) days after receipt of the request of the Initiating Holders; provided, however, that the Company may not utilize this right more than once in any twelve-month period.

A registration statement shall not be counted until such time as such registration statement has been declared effective by the SEC (unless the
Initiating Holders withdraw their request for such registration (other than as a result of information concerning the business or financial condition of the Company which is made known to the Investors after the date on which such registration was
requested) and elect not to pay the registration expenses therefor pursuant to Section 2.5). A registration statement shall not be counted if, as a result of an exercise of the underwriters cut-back provisions, fewer than
seventy-five percent (75%) of the total number of Registrable Securities that Holders have requested to be included in such registration statement are actually included.

2.2. Company Registration. If the Company proposes to register (including for this purpose a registration effected by the Company for stockholders
other than the Holders) any of its stock or other securities under the Securities Act in connection with the public offering of such securities solely for cash (other than a registration statement relating either to the sale of securities to
employees of the Company pursuant to a stock option, stock purchase or similar plan or an SEC Rule 145 transaction, a registration on any form which does not include substantially the same information as would be required to be included in a
registration statement covering the sale of the Registrable Securities or a registration in which the only Common Stock being registered is Common Stock issuable upon conversion of debt securities which are also being registered), the Company shall,
at such time, promptly give each Holder written notice of such registration. Upon the written request of each Holder given within twenty (20) days after mailing of such notice by the Company in accordance with Section 6.6, the
Company shall, subject to the provisions of Section 2.7, cause to be registered under the Securities Act all of the Registrable Securities that each such Holder has requested to be registered. The Company shall have the right to
terminate or withdraw any registration initiated by it under this Section 2.2 prior to the effectiveness of such registration whether or not any Holder has elected to include securities in such registration. The expenses of such
withdrawn registration shall be borne by the Company in accordance with Section 2.6, hereof.

2.3. Obligations of the
Company. Whenever required under this Section 2 to effect the registration of any Registrable Securities, the Company shall, as expeditiously as reasonably possible,

(a) prepare and file with the SEC a registration statement with respect to such Registrable Securities and use its reasonable best efforts to cause such
registration statement to become effective, and, upon the request of the Holders of a majority of the Registrable Securities registered thereunder, keep such registration statement effective for a period of up to one hundred twenty (120) days
or, if earlier, until the distribution contemplated in the Registration Statement has been completed; provided, however, that (i) such 120-day period shall be extended for a period of time equal to the period the Holder refrains
from selling any securities included in such registration at the request of an underwriter of Common Stock (or other securities) of the Company; and (ii) in the case of any registration of Registrable Securities on Form S-3 which are intended
to be offered on a continuous or delayed basis, subject to compliance with applicable SEC rules, such 120-day period shall be extended, if necessary, to keep the registration statement effective until all such Registrable Securities are sold;



6



---

(b) prepare and file with the SEC such amendments and supplements to such registration statement and the
prospectus used in connection with such registration statement as may be necessary to comply with the provisions of the Securities Act with respect to the disposition of all securities covered by such registration statement;

(c) furnish to the Holders such numbers of copies of a prospectus, including a preliminary prospectus, in conformity with the requirements of the
Securities Act, and such other documents as they may reasonably request in order to facilitate the disposition of Registrable Securities owned by them;

(d) use its reasonable best efforts to register and qualify the securities covered by such registration statement under such other securities or Blue Sky laws of such jurisdictions as shall be reasonably requested by
the Holders; provided that the Company shall not be required in connection therewith or as a condition thereto to qualify to do business or to file a general consent to service of process in any such states or jurisdictions, unless the Company is
already subject to service in such jurisdiction and except as may be required by the Securities Act;

(e) in the event of any underwritten
public offering, enter into and perform its obligations under an underwriting agreement, in usual and customary form, with the managing underwriter of such offering. Each Holder participating in such underwriting shall also enter into and perform
its obligations under such an agreement;

(f) cause all such Registrable Securities registered pursuant to this Agreement hereunder to be
listed on a national securities exchange or trading system and each securities exchange and trading system on which similar securities issued by the Company are then listed;

(g) provide a transfer agent and registrar for all Registrable Securities registered pursuant hereunder and a CUSIP number for all such Registrable
Securities, in each case not later than the effective date of such registration;

(h) use its reasonable best efforts to furnish, at the
request of any Holder requesting registration of Registrable Securities pursuant to this Section 2, on the date on which such Registrable Securities are sold to the underwriter, (i) an opinion, dated such date, of the counsel
representing the Company for the purposes of such registration, in form and substance as is customarily given to underwriters in an underwritten public offering, addressed to the underwriters, if any, and (ii) a comfort letter dated
such date, from the independent certified public accountants of the Company, in form and substance as is customarily given by independent certified public accountants to underwriters in an underwritten public offering, addressed to the underwriters,
if any.

2.4. Furnish Information. It shall be a condition precedent to the obligations of the Company to take any action pursuant
to this Section 2 with respect to the Registrable Securities of any selling Holder that such Holder shall furnish to the Company such information regarding itself, the Registrable Securities held by it, and the intended method of
disposition of such securities as shall be reasonably required to effect the registration of such Holders Registrable Securities.

2.5. Expenses of Demand Registration. All expenses, other than underwriting discounts and commissions, incurred in connection with registrations, filings or qualifications pursuant to Section 2.1, including (without
limitation) all registration, filing and qualification fees, printers and accounting fees, fees and disbursements of counsel for the Company and the reasonable fees and disbursements of one counsel for the selling Holders, shall be borne by
the Company; provided, however, that the Company shall not be required to pay for any expenses of any registration proceeding begun pursuant to Section 2.1



7



---

if the registration request is subsequently withdrawn at the request of the Holders of a majority of the Registrable Securities to be registered (in which
case all participating Holders shall bear such expenses pro rata based upon the number of Registrable Securities that were to be included in the withdrawn registration), unless the Holders of a majority of the Registrable Securities agree to forfeit
their right to one demand registration pursuant to Section 2.

2.6. Expenses of Company Registration. The Company shall
bear and pay all expenses incurred in connection with any registration, filing or qualification of Registrable Securities with respect to the registrations pursuant to Section 2.2 hereof for each Holder (which right may be assigned as
provided in Section 6.2 hereof), including (without limitation) all registration, filing, and qualification fees, printers and accounting fees relating or apportionable thereto and the fees and disbursements of one counsel for the
selling Holders selected by them, but excluding underwriting discounts and commissions relating to Registrable Securities.

2.7.
Underwriting Requirements. In connection with any offering involving an underwriting of shares of the Companys capital stock pursuant to Section 2.2, the Company shall not be required to include any of the Holders
securities in such underwriting unless they accept the terms of the underwriting as agreed upon between the Company and its underwriters, and then only in such quantity as the underwriters determine in their sole discretion will not jeopardize the
success of the offering by the Company subject to the limitations set forth below. If the total number of securities, including Registrable Securities, requested by stockholders to be included in such offering exceeds the amount of securities to be
sold other than by the Company that the underwriters determine in their reasonable discretion is compatible with the success of the offering, then the Company shall be required to include in the offering only that number of such securities,
including Registrable Securities, which the underwriters and the Company determine in their sole discretion will not jeopardize the success of the offering. In no event shall any Registrable Securities be excluded from such offering unless all other
stockholders securities have been first excluded. In the event that the underwriters determine that less than all of the Registrable Securities requested to be registered can be included in such offering, then the Registrable Securities that
are included in such offering shall be apportioned pro rata among the selling Holders based on the number of Registrable Securities held by all selling Holders or in such other proportions as shall mutually be agreed to by all such selling Holders.
Notwithstanding the foregoing, in no event shall the amount of securities of the selling Holders included in the offering be reduced below thirty percent (30%) of the total amount of securities included in such offering, unless such offering is
the Companys IPO in which case the selling Holders may be excluded beyond this amount if the underwriters make the determination described above and no other stockholders securities are included in such offering. For purposes of the
preceding parenthetical concerning apportionment, for any selling stockholder which is a Holder of Registrable Securities and which is an investment fund, partnership, limited liability company or corporation, the partners, members, retired
partners, retired members, stockholders and Affiliates of such Holder, or the estates and family members of any such partners, retired partners, members and retired members and any trusts for the benefit of any of the foregoing persons shall be
deemed to be a single selling Holder, and any pro-rata reduction with respect to such selling Holder shall be based upon the aggregate amount of shares carrying registration rights owned by all entities and individuals
included in such selling Holder, as defined in this sentence.

2.8. Delay of Registration. No Holder shall have any
right to obtain or seek an injunction or restraining order or otherwise delay any registration pursuant to this Agreement as the result of any controversy that might arise with respect to the interpretation or implementation of this
Section 2.

2.9. Indemnification. In the event any Registrable Securities are included in a registration statement under
this Section 2:



8



---

(a) To the extent permitted by law, the Company will indemnify and hold harmless each Holder, the
partners, members, officers, directors and stockholders of each Holder, legal counsel and accountants for each Holder, any underwriter (as defined in the Securities Act) for such Holder and each person, if any, who controls such Holder or
underwriter within the meaning of the Securities Act or the Exchange Act, against any Violation and the Company will pay to each such Holder, underwriter, controlling person or other aforementioned person, any legal or other expenses reasonably
incurred by them in connection with investigating or defending any such loss, claim, damage, liability, or action as such expenses are incurred; provided, however, that the indemnity agreement contained in this subsection 2.9(a)
shall not apply to amounts paid in settlement of any such loss, claim, damage, liability, or action if such settlement is effected without the consent of the Company (which consent shall not be unreasonably withheld), nor shall the Company be liable
in any such case for any such loss, claim, damage, liability, or action to the extent that it arises out of or is based upon a Violation which occurs in reliance upon and in conformity with written information furnished expressly for use in
connection with such registration by any such Holder, underwriter, controlling person or other aforementioned person.

(b) To the extent,
permitted by law, each selling Holder will severally and not jointly indemnify and hold harmless the Company, each of its directors, each of its officers who has signed the registration statement, each person, if any, who controls the Company within
the meaning of the Securities Act, legal counsel and accountants for the Company, any underwriter, any other Holder selling securities in such registration statement and any controlling person of any such underwriter or other Holder, against any
losses, claims, damages, or liabilities (joint or several) to which any of the foregoing persons may become subject, under the Securities Act, the Exchange Act or other federal or state law, insofar as such losses, claims, damages, or liabilities
(or actions in respect thereto) arise out of or are based upon any Violation, in each case to the extent (and only to the extent) that such Violation occurs in reliance upon and in conformity with written information furnished by such Holder
expressly for use in connection with such registration; and each such Holder will pay any legal or other expenses reasonably incurred by any person intended to be indemnified pursuant to this subsection 2.9(b), in connection with
investigating or defending any such loss, claim, damage, liability, or action; provided, however, that the indemnity agreement contained in this subsection 2.9(b) shall not apply to amounts paid in settlement of any such loss,
claim, damage, liability or action if such settlement is effected without the consent of the Holder, which consent shall not be unreasonably withheld; provided, further, that, in no event shall any indemnity under this subsection
2.9(b) exceed the net proceeds from the offering received by such Holder, except in the case of fraud or willful misconduct by such Holder.

(c) Promptly after receipt by an indemnified party under this Section 2.9 of notice of the commencement of any action (including any governmental action), such indemnified party will, if a claim in respect thereof is to be made
against any indemnifying party under this Section 2.9, deliver to the indemnifying party a written notice of the commencement thereof and the indemnifying party shall have the right to participate in, and, to the extent the indemnifying
party so desires, jointly with any other indemnifying party similarly noticed, to assume the defense thereof with counsel mutually satisfactory to the parties; provided, however, that an indemnified party (together with all other
indemnified parties which may be represented without conflict by one counsel) shall have the right to retain one separate counsel, with the fees and expenses to be paid by the indemnifying party, if representation of such indemnified party by the
counsel retained by the indemnifying party would be inappropriate due to actual or potential differing interests between such indemnified party and any other party represented by such counsel in such proceeding. The failure to deliver written notice
to the indemnifying party within a reasonable time of the commencement of any such action, if prejudicial to its ability to defend such action, shall relieve such indemnifying party of any liability to the indemnified party under this
Section 2.9, but the omission so to deliver written notice to the indemnifying party will not relieve it of any liability that it may have to any indemnified party otherwise than under this Section 2.9.



9



---

(d) In order to provide for just and equitable contribution to joint liability under the Securities Act
in any case in which either (i) any Holder exercising rights under this Agreement, or any controlling person of any such Holder, makes a claim for indemnification pursuant to this Section 2.9 but it is judicially determined (by the
entry of a final judgment or decree by a court of competent jurisdiction and the expiration of time to appeal or the denial of the last right of appeal) that such indemnification may not be enforced in such case notwithstanding the fact that this
Section 2.9 provides for indemnification in such case, or (ii) contribution under the Securities Act may be required on the part of any such selling Holder or any such controlling person in circumstances for which indemnification is
provided under this Section 2.9, then, and in each such case, the Company and such Holder will contribute to the aggregate losses, claims, damages or liabilities to which they may be subject (after contribution from others) in such
proportion as is appropriate to reflect the relative fault of the indemnifying party on the one hand and of the indemnified party on the other in connection with the statements or omissions that resulted in such loss, liability, claim, damage, or
expense as well as any other relevant equitable considerations. The relative fault of the indemnifying party and of the indemnified party shall be determined by reference to, among other things, whether the untrue or alleged untrue statement of a
material fact or the omission or alleged omission to state a material fact relates to information supplied by the indemnifying party or by the indemnified party and the parties relative intent, knowledge, access to information, and opportunity
to correct or prevent such statement or omission; provided however, that, in any such case, (I) no such Holder will be required to contribute any amount in excess of the public offering price of all such Registrable Securities
offered and sold by such Holder pursuant to such registration statement, and (II) no person or entity guilty of fraudulent misrepresentation (within the meaning of Section 11(f) of the Securities Act) will be entitled to contribution from any
person or entity who was not guilty of such fraudulent misrepresentation; provided further, that in no event shall a Holders liability pursuant to this Section 2.9(d), when combined with the amounts paid or payable by
such holder pursuant to Section 2.9(b), exceed the proceeds from the offering (net of any underwriting discounts or commissions) received by such Holder, except in the case of willful fraud by such Holder.

(e) Notwithstanding the foregoing, to the extent that the provisions on indemnification and contribution contained in the underwriting agreement entered
into in connection with the underwritten public offering are in conflict with the foregoing provisions, the provisions in the underwriting agreement shall control.

(f) Unless otherwise superseded by an underwriting agreement entered into in connection with the underwritten public offering, the obligations of the Company and Holders under this Section 2.9 shall
survive the completion of any offering of Registrable Securities in a registration statement under this Section 2, and otherwise and shall survive the termination of this Agreement.

2.10. Reports Under Exchange Act. With a view to making available to the Holders the benefits of Sec Rule 144 promulgated under the Securities Act
and any other rule or regulation of the SEC that may at any time permits a Holder to sell securities of the Company to the public without registration or pursuant to a registration on Form S-3, the Company agrees to:

(a) make and keep public information available, as those terms are understood and defined in SEC Rule 144, at all times after the effective date of the
first registration statement filed by the Company for the offering of its securities to the general public so long as the Company is subject to the periodic reporting requirements under Sections 13 or 15(d) of the Exchange Act;

(b) file with the SEC in a timely manner all reports and other documents required of the Company under the Securities Act and the Exchange Act; and



10



---

(c) furnish to any Holder, so long as the Holder owns any Registrable Securities, forthwith upon request
(i) a written statement by the Company that it has complied with the reporting requirements of SEC Rule 144, the Securities Act and the Exchange Act (at any time after it has become subject to such reporting requirements), or that it qualifies
as a registrant whose securities may be resold pursuant to Form S-3 (at any time after it so qualifies), (ii) a copy of the most recent annual or quarterly report of the Company and such other reports and documents so filed by the Company, and
(iii) such other information as may be reasonably requested in availing any Holder of any rule or regulation of the SEC which permits the selling of any such securities without registration or pursuant to such form.

2.11. Form S-3 Registration. In case the Company shall receive from Holders of Registrable Securities then outstanding a written request or
requests that the Company effect a registration on Form S-3 and any related qualification or compliance with respect to all or a part of the Registrable Securities owned by such Holder or Holders, the Company will:

(a) promptly give written notice of the proposed registration, and any related qualification or compliance, to all other Holders; and

(b) as soon as practicable, effect such registration and all such qualifications and compliances as may be so requested and as would permit or facilitate
the sale and distribution of all or such portion of such Holders or Holders Registrable Securities as are specified in such request, together with all or such portion of the Registrable Securities of any other Holder or Holders joining
in such request as are specified in a written request given within 15 days after receipt of such written notice from the Company; provided, however, that the Company shall not be obligated to effect any such registration, qualification
or compliance, pursuant to this Section 2.11: (1) if Form S-3 is not then available for such offering by the Holders; (2) if the Holders, together with the holders of any other securities of the Company entitled to inclusion in
such registration, propose to sell Registrable Securities and such other securities (if any) at an aggregate price to the public (net of any underwriters discounts or commissions) of less than One Million Dollars ($1,000,000); (3) if the
Company shall furnish to the Holders a certificate signed by the President of the Company stating that in the good faith judgment of the Board, it would be materially detrimental to the Company and its stockholders for such Form S-3 Registration to
be effected at such time, in which event the Company shall have the right to defer the filing of the Form S-3 registration statement for a period of not more than ninety (90) days after receipt of the request of the Holder or Holders under this
Section 2.11; provided, however, that the Company shall not utilize this right more than once in any twelve month period, and, provided further that the Company shall not register any securities for the
account of itself or any other stockholder during such ninety day period (other than a registration relating solely to the sale of securities of participants in a Company stock plan, a registration relating to a corporate reorganization or
transaction under SEC Rule 145, a registration on any form that does not include substantially the same information as would be required to be included in a registration statement covering the sale of the Registrable Securities, or a registration in
which the only Common Stock being registered is Common Stock issuable upon conversion of debt securities that are also being registered); (4) if the Company has, within the twelve (12) month period preceding the date of such request,
already effected two (2) registrations on Form S-3 for the Holders pursuant to this Section 2.11; or (5) in any particular jurisdiction in which the Company would be required to qualify to do business or to execute a general
consent to service of process in effecting such registration, qualification or compliance; or (6) during the period ending one hundred eighty (180) days after the effective date of a registration statement subject to
Section 2.2 hereof.

(c) Subject to the foregoing, the Company shall file a registration statement covering the Registrable
Securities and other securities so requested to be registered as soon as practicable after receipt of the request or requests of the Holders. All expenses incurred in connection with a registration requested pursuant to Section 2.11,
including (without limitation) all registration, filing, qualification,



11



---

printers and accounting fees and the reasonable fees and disbursements of counsel for the selling Holder or Holders and counsel for the Company, but
excluding any underwriters discounts or commissions associated with Registrable Securities, shall be borne by the Company. Registrations effected pursuant to this Section 2.11 shall not be counted as demands for registration or
registrations effected pursuant to Sections 2.1.

(d) If the Initiating Holders intend to distribute the Registrable Securities
covered by their request by means of an underwriting, they shall so advise the Company as part of their request made pursuant to this Section 2.11 and the Company shall include such information in the written notice referred to in
Section 2.11(a). The provisions of Section 2.1(b) shall be applicable to such request (with the substitution of Section 2.11, for references to Section 2.1).

2.12. Limitations on Subsequent Registration Rights. From and after the date of this Agreement, the Company shall not, without the prior written
consent of the Holders of a majority of the Registrable Securities then outstanding, enter into any agreement with any holder or prospective holder of any securities of the Company which would allow such holder or prospective holder (a) to
include such securities in any registration unless under the terms of such agreement, such holder or prospective holder may include such securities in any such registration only to the extent that the inclusion of such securities will not reduce the
amount of the Registrable Securities of the Holders that are included or (b) to demand registration of any securities held by such holder or prospective holder.

2.13. Market Stand-Off Agreement. Each Holder hereby agrees that it will not, without the prior written consent of the managing underwriter, during the period commencing on the date of the final
prospectus relating to the Companys IPO and ending on the date specified by the Company and the managing underwriter (such period not to exceed one hundred eighty (180) days which period may be extended upon the request of the managing
underwriter for an additional period of up to fifteen (15) days if the Company issues or proposes to issue an earnings or other public release within fifteen (15) days of the expiration of the 180-day lockup period) (i) lend, offer,
pledge, sell, contract to sell, sell any option or contract to purchase, purchase any option or contract to sell, grant any option, right or warrant to purchase, or otherwise transfer or dispose of, directly or indirectly, any shares of Common Stock
or any securities convertible into or exercisable or exchangeable for Common Stock held immediately prior to the effectiveness of the Registration Statement for such offering, or (ii) enter into any swap or other arrangement that transfers to
another, in whole or in part, any of the economic consequences of ownership of the Common Stock, whether any such transaction described in clause (i) or (ii) above is to be settled by delivery of Common Stock or other securities, in cash
or otherwise. The foregoing provisions of this Section 2.13 shall apply only to the Companys IPO, shall not apply to the sale of any shares to an underwriter pursuant to an underwriting agreement, and shall only be applicable to
the Holders if all officers, directors and greater than one percent (1%) stockholders of the Company enter into similar agreements. The underwriters in connection with the Companys IPO are intended third-party beneficiaries of this
Section 2.13 and shall have the right, power and authority to enforce the provisions hereof as though they were a party hereto. Each Holder further agrees to execute such agreements as may be reasonably requested by the underwriters in
the Companys IPO that are consistent with this Section 2.13 or that are necessary to give further effect thereto. Any discretionary waiver or termination of the restrictions of any or all of such agreements by the Company or the
underwriters shall apply to all Holders subject to such agreements pro rata based on the number of shares subject to such agreements, except that, notwithstanding the foregoing, the Company and the underwriters may, in their sole discretion, waive
or terminate these restrictions with respect to up to 100,000 shares of the Companys Common Stock.



12



---

In order to enforce the foregoing covenant, the Company may impose stop-transfer instructions with
respect to the Registrable Securities of each Holder (and the shares or securities of every other person subject to the foregoing restriction) until the end of such period.

2.14. Termination of Registration Rights

(a) No Holder shall be entitled to exercise any right provided for in this Section 2, after five (5) years following the consummation of a Qualified Public Offering.

(b) In addition, the right of any Holder to exercise any right provided for in this Section 2, including the right to request registration or
inclusion in a registration, shall terminate when all shares of Registrable Securities held by such Holder can be sold without restriction under SEC Rule 144(k).

3. Inspection Rights and Confidentiality.

3.1. Inspection. The Company shall permit an Investor or Stockholder, at such
Investors or Stockholders expense, to visit and inspect the Companys properties, to examine its books of account and records and to discuss the Companys affairs, finances and accounts with its officers, all at such reasonable
times as may be reasonably requested by the Investor or Stockholder; provided, however, that the Company shall not be obligated pursuant to this Section 3.1, to provide access to any information which it reasonably
considers to be a trade secret or similar confidential information or would adversely affect the attorney-client privilege between the Company and its counsel. The covenant set forth in this Section 3.1 shall terminate and be of no
further force or effect (i) immediately prior to the consummation of an IPO, (ii) when the Company first becomes subject to the periodic reporting requirements of Sections 12(g) or 15(d) of the Exchange Act; or (iii) upon a Sale of
the Company, whichever event shall first occur.

3.2. Confidentiality. Each Investor agrees that such Investor will keep
confidential and will not disclose, divulge or use for any purpose, other than to monitor its investment in the Company, any confidential information obtained from the Company pursuant to the terms of this Agreement, unless such confidential
information (i) is known or becomes known to the public in general (other than as a result of a breach of this Section 3.2 by such Investor), (ii) is or has been independently developed or conceived by the Investor without use
of the Companys confidential information or (iii) is or has been made known or disclosed to the Investor by a third party without a breach of any obligation of confidentiality such third party may have to the Company; provided,
however, that an Investor may disclose confidential information (a) to its attorneys, accountants, consultants, and other professionals to the extent necessary to obtain their services in connection with monitoring its investment in the
Company, (b) to any prospective investor of any Registrable Securities from such Investor as long as such prospective investor agrees to be bound by the provisions of this Section 3.2 or executes a similar confidentiality agreement,
(c) to any Affiliate, partner, member, stockholder, prospective investor or acquirer or wholly owned subsidiary of such Investor or such other person with whom Investor is considering entering into a strategic relationship as long as such
person agrees to be bound by the provisions of this Section 3.2 or executes a similar confidentiality agreement or (d) as may otherwise be required by law (including without limitation disclosure of financial and other information
required to be made in regulatory filings by Arrowhead), provided that the Investor takes reasonable steps to minimize the extent of any such required disclosure. The Company acknowledges that the Investors may be in the business of venture capital
investing and therefore review the business plans and related proprietary information of many enterprises, including enterprises which may have products or services which compete directly or indirectly with those of the Company. Nothing in this
Agreement shall preclude or in any way restrict the Investors from investing or participating in any particular enterprise whether or not such enterprise has products or services which compete with those of the Company.



13



---

4. Right of First Offer; First Refusal Right on Future Rounds: Directed Shares

4.1. Right of First Offer. Subject to the terms and conditions specified in this Section 4.1, and applicable securities laws, in the
event the Company proposes to offer or sell any New Securities, the Company shall first make an offering of such New Securities to each Investor and Stockholder (for purposes of this Section 4.1 only, each a Major
Investor, and collectively, Major Investors) in accordance with the following provisions of this Section 4.1. A Major Investor shall be entitled to apportion the right of first offer hereby granted it among
itself and its partners, members and Affiliates in such proportions as it deems appropriate.

(a) The Company shall deliver a notice, in
accordance with the provisions of Section 6.6 hereof (the Offer Notice), to each of the Major Investors stating (i) its bona fide intention to offer such New Securities, (ii) the number of such New Securities
to be offered, and (iii) the price and terms, if any, upon which it proposes to offer such New Securities.

(b) By written
notification received by the Company, within twenty (20) calendar days after mailing of the Offer Notice, each of the Major Investors may elect to purchase or obtain, at the price and on the terms specified in the Offer Notice, up to that
portion of such New Securities which equals the proportion that the number of shares of Common Stock issued and held (and any other securities convertible into, or otherwise exercisable or exchangeable for, shares of Common Stock) by such Major
Investor bears to the total number of shares of Common Stock of the Company then outstanding (assuming full conversion and exercise of all convertible or exercisable securities). The Company shall promptly, in writing, inform each Major Investor
that elects to purchase all the shares available to it (each, a Fully-Exercising Investor) of any other Major Investors failure to do likewise. During the ten (10) day period commencing after receipt of such
information, each Fully-Exercising Investor shall be entitled to obtain that portion of the New Securities for which Major Investors were entitled to subscribe but which were not subscribed for by the Major Investors which is equal to the proportion
that the number of shares of Common Stock issued and held by such Fully-Exercising Investor bears to the total number of shares of Common Stock issued and held by all Fully-Exercising Investors who wish to purchase such unsubscribed shares.

(c) If all New Securities referred to in the Offer Notice are not elected to be purchased or obtained as provided in
Section 4.1(b) hereof, the Company may, during the ninety (90) day period following the expiration of the period provided in Section 4.1(b) hereof, offer the remaining unsubscribed portion of such New Securities
(collectively, the Refused Securities) to any person or persons at a price not less than, and upon terms no more favorable to the offeree than, those specified in the Offer Notice. If the Company does not enter into an agreement
for the sale of the New Securities within such period, or if such agreement is not consummated within thirty (30) days of the execution thereof, the right provided hereunder shall be deemed to be revived and such New Securities shall not be
offered unless first reoffered to the Major Investors in accordance with this Section 4.1.

(d) The right of first offer in
this Section 4.1 shall not be applicable to: (i) shares of Common Stock issued or deemed issued to employees or directors of, or consultants to, the Company or any of its subsidiaries pursuant to a plan, agreement, or arrangement
approved by the Board; (ii) shares of Series C Preferred Stock issued in a transaction or series of transactions in a bona fide private financing transaction of the Company; (iii) shares of Common Stock issued in an IPO; (iii) the
issuance of securities pursuant to the conversion or exercise of convertible or exercisable securities outstanding on the date hereof; (iv) securities issued in connection with any stock split or stock dividend of the Company; (v) the
issuance of securities in connection with a bona fide business acquisition of or by the Company, whether by merger, consolidation, sale of assets, sale or exchange of stock or otherwise unanimously approved by the Board; (vi) the issuance of
stock, warrants or other securities or rights to persons or entities with which the Company has business relationships provided such issuances are for other than primarily capital raising purposes and provided that at the time of any such issuance,
the aggregate of such issuance



14



---

and similar issuances in the preceding twelve month period do not exceed one percent (1%) of the then outstanding Common Stock of the Company (assuming
full conversion and exercise of all convertible and exercisable securities); or (vii) the issuance of up to an aggregate of 250,000 shares of Common Stock, or the grant of options or warrants therefor, in connection with any present or future
borrowing, line of credit, leasing or similar financing arrangement approved by the Board, including at least one Investor-Designated Director and by a majority of the members of the Board who are not employees of the Company or any subsidiary.

(e) In lieu of complying with the provisions of this Section 4.1, the Company may elect to give notice to the Major Investors
within thirty (30) days after the issuance of New Securities. Such notice shall describe the type, price and terms of the New Securities: Each Major Investor shall have twenty (20) days from the date of receipt of such notice to elect to
purchase up to the number of New Securities that would, if purchased by such Major Investor, maintain such Major Investors percentage ownership position, calculated as set forth in Section 4.1(b) prior to giving effect to
the issuance of such New Securities. The closing of such sale shall occur within sixty (60) days of the date of notice to the Major Investors.

4.2. Directed IPO Shares. In the event of an IPO, the Company will use its reasonable best efforts to cause the managing underwriter(s) of such IPO to designate a number of shares equal to ten percent (10%) of the Companys
shares of Common Stock to be offered in such IPO for sale under a directed shares program and shall instruct such underwriter(s) to allocate no less than fifty percent (50%) of such directed shares program to be sold to persons or
entities designated by the Investor, pro rata on the basis of the number of shares held by each such holder. The shares designated by the underwriter(s) for sale under a directed shares program are referred to herein as directed shares.
The Investors acknowledge that, despite the Companys use of its reasonable best efforts, the underwriter(s) may determine in their sole discretion that it is not advisable to designate all such shares as directed shares in the IPO, in which
case the number of designated shares may be reduced or no directed shares may be designated, as applicable. The Investors also acknowledge that notwithstanding the terms of this Agreement, the sale of any directed shares to any person or entity
pursuant to this Agreement will only be made in compliance with Rule 2110 of the National Association of Securities Dealers, Inc. Conduct Rules, IM-21 10-1 and federal, state and local laws, rules and regulations.

4.3. Termination. The provisions of Section 4.1 shall terminate (i) immediately prior to the consummation of a Qualified Public
Offering, (ii) when the Company first becomes subject to the periodic reporting requirements of Sections 12(g) or 15(d) of the Exchange Act; or (iii) upon a Sale of the Company, whichever event shall first occur. The provisions of
Section 4.2 shall terminate upon a Sale of the Company.

5. Additional Covenants

5.1. Insurance; Director Indemnification. The Company shall maintain its existing policy of Directors and Officers Errors and Omissions insurance.
The Company shall provide indemnification to the former directors of Carbon Nanotechnologies, Inc., a Delaware corporation (CNI) as and to the same extent that the Company provides indemnification to directors of the Company under the
certificate of incorporation and bylaws of the Company as of April 20, 2007.

5.2. Employee Agreements. The Company will cause
each person now or hereafter employed by it or any subsidiary (or engaged by the Company or any subsidiary as a consultant/independent contractor) with access to confidential information and/or trade secrets to enter into a non-disclosure and
proprietary rights assignment agreement substantially in the form approved by the Board. In addition, the Company shall not amend, modify, terminate, waive or otherwise alter, in whole or in part, any of the above-referenced agreements or any
restricted stock agreement between the Company and any employee



15



---

without the consent of those members of the Board elected solely by the Investors pursuant to the Voting Agreement.

5.3. Vesting of Option, Stock Grants. Unless approved by the Board, including any Investor-Designated Director, all future employees and
consultants of the Company, who shall purchase, or receive options to purchase, shares of the Companys capital stock following the date hereof shall be required to execute stock purchase or option agreements providing for (i) vesting of
shares over a four (4) year period, with twenty-five percent (25%) of the shares subject to such option vesting one (1) year after the applicable vesting commencement date and the balance of the shares subject to such option vesting
in a series of thirty-six (36) successive equal monthly installments over the thirty-six (36)-month period measured from the first anniversary of the vesting commencement date, and (ii) a 180-day lockup period in connection with the
Companys IPO. The Company shall retain a right of first refusal on employee transfers until the Companys IPO and the right to repurchase unvested shares at cost.

5.4. Meetings of the Board. Unless otherwise determined by the vote of a majority of the directors then in office, the Board shall meet at least
quarterly in accordance with an agreed upon schedule.

5.5. Successor Indemnification. In the event that the Company or any of its
successors or assigns (i) consolidates with or merges into any other entity and shall not be the continuing or surviving corporation or entity of such consolidation or merger or (ii) transfers or conveys all or substantially all of its
properties and assets to any person or entity, then, and in each such case, to the extent necessary, proper provision shall be made so that the successors and assigns of the Company assume the obligations of the Company with respect to
indemnification of members of the Board as in effect immediately prior to such transaction, whether in the Companys bylaws, Certificate of Incorporation, or elsewhere, as the case may be.

5.6. Termination of Covenants. The covenants set forth in this Section 5, except for Section 5.5, shall terminate and be
of no further force or effect (i) immediately prior to the consummation of the sale of shares of Common Stock in the Companys IPO, (ii) when the Company first becomes subject to the periodic reporting requirements of Sections 12(g)
or 15(d) of the Exchange Act; or (iii) upon a Sale of the Company, whichever event shall first occur.

6. Miscellaneous.

6.1. Successors and Assigns. The terms and conditions of this Agreement shall inure to the benefit of and be binding upon the respective successors
and assigns of the parties. Nothing in this Agreement, express or implied, is intended to confer upon any party other than the parties hereto or their respective successors and assigns any rights, remedies, obligations, or liabilities under or by
reason of this Agreement, except as expressly provided in this Agreement.

6.2. Transfers of Rights. Except as otherwise expressly
provided herein, the provisions hereof shall inure to the benefit of, and be binding upon, the successors, permitted assigns, heirs, executors and administrators of the parties hereto. The registration rights under Section 2 hereof, the
information rights under Section 3 hereof, and the rights of first refusal under Section 4 hereof, may only be transferred to transferees or assignees acquiring the greater of (a) at least 300,000 shares of Series A Preferred Stock,
Series B Preferred Stock and/or Series C Preferred Stock (on an as-converted basis and subject to appropriate adjustment for stock splits, stock dividends, combinations, and other recapitalizations) or (b) all shares of Series A Preferred
Stock, Series B Preferred Stock and Series C Preferred Stock (or Common Stock issued upon conversion thereof), then held by the transferor; provided that each transferee or assignee of rights under this Agreement shall continue to be subject to the
terms hereof, and, as a



16



---

condition to the Companys recognizing such transfer, each transferee or assignee shall agree in writing to be subject to each of the terms of this
Agreement by executing and delivering an Adoption Agreement substantially in the form attached hereto as Exhibit A. Upon the execution and delivery of an Adoption Agreement by any transferee, such transferee shall be deemed to be a party
hereto as if such transferees signature appeared on the signature pages of this Agreement. By execution of this Agreement or of any Adoption Agreement, each of the parties appoints the Company as its attorney in fact for the purpose of
executing any Adoption Agreement that may be required to be delivered under the terms of this Agreement. The Company shall not permit the transfer of the Registrable Securities subject to this Agreement on its books or issue a new certificate
representing any such Registrable Securities unless and until such transferee shall have complied with the terms of this Section 6.2. Nothing in this Agreement, express or implied, is intended to confer upon any party other than the
parties or their respective executors, administrators, heirs, successors and assigns any rights, remedies, obligations, or liabilities under or by reason of this Agreement, except as expressly provided in this Agreement. Notwithstanding the
foregoing, the rights of first refusal contained in Section 4 may be transferred or assigned only to a Person that is an accredited investor as defined in Rule 501 of the Securities Act.

6.3. Additional Investors. Notwithstanding anything to the contrary contained herein, if the Company issues additional shares of the
Companys Series C Preferred Stock after the date hereof pursuant to a Series C Agreement, the Company shall cause any purchaser of such shares of Series C Preferred Stock to execute a counterpart signature page hereto as an Investor, and such
party shall thereby be bound by, and subject to, all the terms and provisions of this Agreement applicable to an Investor.

6.4.
Governing Law. This Agreement shall be governed by and construed in accordance with the General Corporation Law of the State of Delaware as to matters within the scope thereof, without regard to its principles of conflicts of laws.

6.5. Counterparts. This Agreement may be executed in two or more counterparts, each of which shall be deemed an original, but all
of which together shall constitute one and the same instrument. This Agreement may also be executed and delivered by facsimile signature and in two or more counterparts, each of which shall be deemed an original, but all of which together shall
constitute one and the same instrument.

6.6. Titles and Subtitles. The titles and subtitles used in this Agreement are used for
convenience only and are not to be considered in construing or interpreting this Agreement.

6.7. Notices. All notices and other
communications given or made pursuant to this Agreement shall be in writing and shall be deemed effectively given: (a) upon personal delivery to the party to be notified, (b) when sent by confirmed electronic mail or facsimile if sent
during normal business hours of the recipient, and if not so confirmed, then on the next business day, (c) five (5) days after having been sent by registered or certified mail, return receipt requested, postage prepaid, or (d) one
(1) day after deposit with a nationally recognized overnight courier, specifying next day delivery, with written verification of receipt. All communications shall be sent to the respective parties at their address as set forth on the signature
page or Schedule A hereto, or to such email address, facsimile number or address as subsequently modified by written notice given in accordance with this Section 6.6.

6.8. Costs of Enforcement. If any party to this Agreement seeks to enforce its rights under this Agreement by legal proceedings, the
non-prevailing party shall pay all costs and expenses incurred by the prevailing party, including, without limitation, all reasonable attorneys fees.

6.9. Amendments and Waivers. Any term of this Agreement may be amended and the observance of any term of this Agreement may be waived (either generally or in a particular instance and



17



---

either retroactively or prospectively), only with the written consent of (i) the Company, (ii) the holders of at least a majority of the
Registrable Securities then outstanding and held by the Stockholders and (iii) the holders of at least a majority of the Registrable Securities then outstanding and held by the Investors. Any amendment or waiver effected in accordance with this
paragraph shall be binding upon each holder of any Registrable Securities then outstanding, each future holder of all such Registrable Securities, and the Company. Notwithstanding the foregoing, this Agreement may not be amended or terminated and
the observance of any term hereunder may not be waived with respect to any Investor without the written consent of such Investor, unless such amendment, termination or waiver applies to all Investors in the same fashion (it being agreed that a
waiver of the provisions of Section 4 with respect to a particular transaction shall be deemed to apply to all Investors in the same fashion if such waiver does so by its terms, notwithstanding the fact that certain Investors may
nonetheless, by agreement with the Company, purchase securities in such transaction). The Company shall give prompt written notice of any amendment or termination hereof or waiver hereunder to any party hereto that did not consent in writing to such
amendment, termination or waiver. Any amendment, termination or waiver effected in accordance with this Section 6.8 shall be binding on all parties hereto, even if they do not execute such consent. No waivers of or exceptions to any
term, condition or provision of this Agreement, in any one or more instances, shall be deemed to be, or construed as, a further or continuing waiver of any such term, condition or provision. Any party may agree to waive or amend its own rights
hereunder with respect to the Company or another party without the necessity of obtaining the consent or agreement of any other party.

6.10. Severability. The invalidity or unenforceability of any provision hereof shall in no way affect the validity or enforceability of any other provision.

6.11. Aggregation of Stock. All shares of Registrable Securities held or acquired by Affiliates shall be aggregated together for the purpose of
determining the availability of any rights under this Agreement.

6.12. Entire Agreement. This Agreement (including the Schedules
hereto) constitutes the full and entire understanding and agreement between the parties with respect to the subject matter hereof, and any other prior written or oral agreement, or contemporaneous written or oral agreement, relating to the subject
matter hereof existing between the parties are expressly canceled.

6.13. Delays or Omissions. No delay or omission to exercise any
right, power or remedy accruing to any party under this Agreement, upon any breach or default of any other party under this Agreement, shall impair any such right, power or remedy of such nonbreaching or non-defaulting party nor shall it be
construed to be a waiver of any such breach or default, or an acquiescence therein, or of or in any similar breach or default thereafter occurring; nor shall any waiver of any single breach or default be deemed a waiver of any other breach or
default theretofore or thereafter occurring. Any waiver, permit, consent or approval of any kind or character on the part of any party of any breach or default under this Agreement, or any waiver on the part of any party of any provisions or
conditions of this Agreement, must be in writing and shall be effective only to the extent specifically set forth in such writing. All remedies, either under this Agreement or by law or otherwise afforded to any party, shall be cumulative and not
alternative.

6.14. Prior Agreement Superseded. Pursuant to Section 6.8 of the Prior Agreement, the undersigned parties who are
parties to such Prior Agreement hereby amend and restate the Prior Agreement to read in its entirety as set forth in this Agreement, all with the intent and effect that the Prior Agreement shall hereby be terminated and entirely replaced and
superseded by this Agreement.



18



---

[SIGNATURE PAGE FOLLOWS]



19



---

IN WITNESS WHEREOF, the parties have executed this Amended and Restated Investors Rights Agreement
as of the date first above written.



COMPANY:UNIDYM, INC. a Delaware
corporationBy:Name:

Arthur L. SwiftTitle:

Chief Executive OfficerAddress:




35



---

IN WITNESS WHEREOF, the parties have executed this Amended and Restated Investors Rights Agreement
as of the date first above written.



INVESTORS:ARROWHEAD RESEARCH CORPORATION a Delaware
corporationBy:Name:

R. Bruce StewartTitle:

Chief Executive OfficerAddress:

201 South Lake Avenue Suite 703Pasadena, CA 91101-3074




---

IN WITNESS WHEREOF, the parties have executed this Amended and Restated Investors Rights Agreement
as of the date first above written.



INVESTORS:Name:(Print Name of Investor)By:(Print name of signatory, if signing on behalf of entity)Title:(Print title of signatory, if signing on behalf of an entity)Signature:




---

SCHEDULE A

INVESTORS

Arrowhead Research Corporation

201 South Lake Avenue, Suite 703

Pasadena, CA 91101

Telephone: 626-304-4300

Facsimile: 626-792-5554

[New Series C Investors]



---

SCHEDULE B

STOCKHOLDERS

[List of Stockholders]



---

EXHIBIT A

ADOPTION AGREEMENT

This Adoption Agreement (Adoption Agreement) is
executed by the undersigned (the Transferee) pursuant to the terms of that certain Amended and Restated Investors Rights Agreement dated as of October [], 2007 (the
Agreement), by and among the Company, Stockholder and certain of its Investors. Capitalized terms used but not defined in this Adoption Agreement shall have the respective meanings ascribed to such terms in the Agreement. By the
execution of this Adoption Agreement, the Transferee agrees as follows:

1.1 Acknowledgement. Transferee acknowledges that Transferee
is acquiring certain shares of the capital stock of the Company (the Stock), subject to the terms and conditions of the Agreement.

1.2 Agreement. Transferee (i) agrees that the Stock acquired by Transferee shall be bound by and subject to the terms of the Agreement, and (ii) hereby adopts the Agreement with the same force and
effect as if Transferee were originally a party thereto.

1.3 Notice. Any notice required or permitted by the Agreement shall be
given to Transferee at the address listed beside Transferees signature below.

EXECUTED AND DATED this
 day of .



TRANSFEREEBy:Name:Title:Address:Fax:




|                     |  | 
|-------------------- |  | 
|Accepted and Agreed:
|                    
|UNIDYM, INC.        
|                     | 
|By:                  |  | 
|Name:                |  | 
|Title:               |  | 



---

Exhibit B

Form of

Amended and Restated Right of First Refusal and Co-Sale Agreement



---

AMENDED AND RESTATED

RIGHT OF FIRST REFUSAL AND CO-SALE AGREEMENT

This Amended and Restated Right of First Refusal and Co-Sale
Agreement (the Agreement) is made as of the October [], 2007, among Unidym, Inc., a Delaware corporation (the Company), the investors listed on Schedule A hereto (the
Investors), and the key stockholders listed on Schedule B hereto (each of which is referred to in this Agreement as a Key Stockholder).

RECITALS

WHEREAS, the Company, certain of the Investors, and certain of
the Key Stockholders entered into an Amended and Restated Right of First Refusal and Co-Sale Agreement dated as of April 20, 2007 (the Prior Agreement);

WHEREAS, certain investors (the Series C Investors) have agreed to purchase shares of the Companys Series C
Preferred Stock pursuant to a certain Series C Preferred Stock Subscription Agreement by and between the Company and such Series C Investor dated from and after the date of this Agreement (each a Series C
Agreement). Each Series C Agreement provides that, as a condition to the Series C Investors purchase of Series C Stock thereunder, the Company will enter into this Agreement and the Series C Investor will be
granted the rights set forth herein;

WHEREAS, the Company and the parties to the Prior Agreement desire to enter into this
Agreement in order to amend, restate and replace their rights and obligations under the Prior Agreement with the rights and obligations set forth in this Agreement, and Section 10(e) of the Prior Agreement provides that the Prior Agreement may
be amended by the written consent of (i) the Company, (ii) the holders of a majority of the Common Stock issuable or issued upon conversion of the Companys Series B Preferred Stock and (iii) the holders of a majority of the
Key Stockholder Stock;

WHEREAS, the parties to this Agreement have reached certain agreements and understandings with respect to
the sale, assignment, transfer, encumbrance or other disposition of any shares of capital stock (or any securities convertible into or exercisable for any shares of capital stock) of the Company now held or hereafter acquired by each Key
Stockholder, including any shares of Series A Preferred Stock, $0.0001 par value per share (the Series A Preferred Stock), any shares of Series B Preferred Stock, $0.0001 par value per share (the Series B Preferred
Stock) and any shares of Series C Preferred Stock, $0.0001 par value per share (the Series C Preferred Stock and together with the Series A Preferred Stock and Series B Preferred Stock, the Preferred
Stock), of the Company, (collectively, the Key Stockholder Stock with respect to each such Key Stockholder); and

WHEREAS, the Company has provided its written consent to amend the Prior Agreement, the undersigned parties hold a majority of the Common Stock issuable or issued upon conversion of the Companys Series B Preferred Stock and the
undersigned parties hold a majority of the Key Stockholder Stock.

NOW, THEREFORE, in consideration of the foregoing and the
promises and covenants contained herein, the sufficiency of which is hereby acknowledged, all parties hereto agree as follows:

1. Right
of First Refusal on Key Stockholder Stock. Before any Key Stockholder may sell, pledge, encumber or transfer to a third party any Key Stockholder Stock held by such Key Stockholder, such Key Stockholder Stock shall be offered to the Company and
the Investors in the following manner:



---

(a) Company Right of First Refusal. If at any time a Key Stockholder proposes to transfer any Key
Stockholder Stock to one or more third parties, then such selling Key Stockholder (the Selling Stockholder) shall give the Company a written notice (the Company Notice) stating (i) his, her or its bona fide
intention to sell or transfer such Key Stockholder Stock, (ii) the identity of the person or persons to whom the Key Stockholder proposes to sell or transfer such Key Stockholder Stock (the Proposed Transferee),
(iii) the number of shares of such Key Stockholder Stock proposed to be sold or transferred (which amount of Key Stockholder Stock shall be referred to herein as Offered Stock) and (iv) the purchase price for which such
Key Stockholder proposes to sell or transfer such Offered Stock. The Company shall have the right, at any time within twenty-five (25) days of receipt of the above Company Notice, to purchase or obtain some or all of the Offered Stock at the
price and on the terms specified in the Company Notice.

(b) Investors Right of First Refusal; CNI Stockholders Right of
Co-Sale. If, after the expiration of such twenty-five (25) day period, the Company has not elected to purchase all of the Offered Stock, such Selling Stockholder shall offer such Offered Stock to the Investors in the following manner:

(i) The Selling Stockholder shall deliver a notice (the Investors Notice) to the Investors (who are
parties to this Agreement as of the date of the Investors Notice) and the other Key Stockholders (who are parties to this Agreement as of the date of the Investors Notice) stating the same information as set forth in the Company Notice.

(ii) Each of the Investors shall have the right to purchase all or a portion of the remaining Offered Stock not elected to be purchased
by the Company (the Remaining Stock), subject to the following:

(A) If any of the Investors are
interested in purchasing any of the Remaining Stock, such Investors shall, within five (5) days of receipt of the Investors Notice, provide the Carbon Nanotechnologies, Inc., a Delaware corporation (CNI) Stockholders
identified on Schedule B hereto with a written notice (the CNI Notice and, together with the Company Notice, and the Investors Notice, the Notices) stating the same information set forth in the Investors
Notice and that portion of the Remaining Stock that such Investors intend to purchase. Each CNI Stockholder shall have the right to participate in the proposed sale of the Remaining Shares to the Investors by substituting up to that number of Common
Stock and/or Preferred Stock equal to the product obtained by multiplying (x) the aggregate number of Remaining Stock covered by the CNI Notice by (y) a fraction, the numerator of which is the number of shares of Common Stock (assuming
conversion of all issued and outstanding shares of Preferred Stock) held by such CNI Stockholder on the date of the CNI Notice and the denominator of which is the total number of shares of Common Stock (assuming conversion of all issued and
outstanding shares of Preferred Stock) held by all CNI Stockholders on the date of the CNI Notice (the CNI Substitution Right). To exercise the CNI Substitution Right, the CNI Stockholder must give written notice to each of the
Investors (the CNI Election Notice) and to the Selling Stockholder by overnight courier, within five (5) business days after receipt of the CNI Notice. Any sale of Common Stock and/or Preferred Stock by a CNI Stockholder to
the Investors pursuant to the terms of this paragraph shall be on the same terms and conditions as the proposed sale of the Offered Shares. The delivery of the CNI Election Notice by a CNI Stockholder shall constitute an irrevocable commitment to
sell such shares and the Selling Stockholder shall be required to reduce the number of shares of Offered Stock that such Selling Stockholder may sell to the Investors so as to accommodate the CNI Substitution Right of all CNI Stockholders



2



---

electing to exercise such CNI Substitution Right.

(iii) If, after the expiration of such five (5) day period, the CNI Stockholders have not delivered a CNI Election Notice to substitute that number of their shares of Common Stock and/or Preferred Stock equal to
their respective pro rata share of all of the Remaining Stock, then at any time within fifteen (15) days after expiration of such five (5) day period, each Investor may elect to purchase or obtain from the Selling Stockholder, at the price
and on the terms specified in the Investors Notice, up to that number of shares of the Remaining Stock equal to the product obtained by multiplying (A) the Remaining Stock by (B) a fraction, the numerator of which is the number of shares
of the Companys Common Stock (assuming conversion of all shares of the Companys Preferred Stock) then held by such Investor and the denominator of which is the total number of shares of the Companys Common Stock (assuming
conversion of all shares of the Companys Preferred Stock) then held by all the Investors.

(iv) After the expiration
of such fifteen (15) day period, the Selling Stockholder shall promptly, in writing, notify each Investor that elects to purchase any portion of the Remaining Stock available to it pursuant to Section 1(b)(iii) (an
Exercising Investor) of any Investors failure to purchase all of the Remaining Stock available to it. During the ten (10) day period commencing after such notice is given, each Exercising Investor shall be entitled to
obtain that portion of the unsubscribed for Remaining Stock which is equal to the proportion that the number of shares of Common Stock (assuming conversion of all shares of Preferred Stock) then held by such Exercising Investor bears to the total
number of shares of Common Stock (assuming conversion of all shares of Preferred Stock) then held by all Exercising Investors who wish to purchase some of the unsubscribed shares of Offered Stock.

(c) Non-Cash Payments. Should the purchase price specified in the Notices be payable in property other than cash or evidences of indebtedness, the
Company (and/or the Investors, as applicable) shall have the right to pay the purchase price in the form of cash equal in amount to the value of such property. If the Selling Stockholder (and/or the CNI Stockholders) and the Company (and/or the
Investors) cannot agree on such cash value within ten (10) days after the Companys receipt of the applicable Notice, the valuation shall be made by an appraiser of recognized standing selected by the Selling Stockholder (and/or the CNI
Stockholders) and the Company (and/or the Investors) or, if they cannot agree on an appraiser within twenty (20) days after the Companys receipt of the applicable Notice, each shall select an appraiser of recognized standing and the two
(2) appraisers so nominated shall appoint a third appraiser, and the determination of such third appraiser shall be determinative of such value. The cost of such appraisal shall be shared equally by the Selling Stockholder (and/or the CNI
Stockholders) and the Company (and/or the Investors), with the half of the cost borne by the Company and the Investors borne by them on a pro rata basis, based on the number of shares such parties were interested in purchasing pursuant to this
Section 1. If either of the fifteen (15) day periods for the election to purchase by the Company or the Investors set forth in Section 1(a) or Section 1(b), respectively, has expired but the determination of
the value of the purchase price offered by the Proposed Transferee has not yet been made, then any such period shall be extended through the fifth (5th) business day after such valuation shall have been made pursuant to this
Section 1(c).

(d) Assignment. The right of first refusal set forth in Section 1(b) may not be assigned or
transferred, except that (i) such right is assignable by each Investor to any wholly owned subsidiary or parent of, or to any corporation, partner, member or entity that is, within the meaning of the 1933 Securities Act, as amended (the
Act), controlling, controlled by or under common control with, any such Investor, and (ii) such right is assignable between and among any of the Investors.



3



---

(e) Permitted Sales of Refused Securities. If the Company and the Investors have not purchased all
of the Offered Stock under their right of first refusal as described herein and subject to the provisions of Section 2 below, the Selling Stockholder (and/or CNI Stockholder) may then sell all of the Offered Stock not subscribed for by
the Company and any Exercising Investors to the Proposed Transferee at a price not less than, and upon terms no more favorable to the Proposed Transferee than, those specified in the Notice (and the Investors Notice, if any), provided that such sale
or transfer is consummated within sixty (60) days of the Companys receipt of the Notice, and provided further that any such sale is in accordance with all the terms and conditions hereof. If the Selling Stockholder fails to consummate the
sale or transfer within such sixty (60) day period, the right of first refusal of the Company and the Investors provided hereby (and any co-sale rights contained in Section 2 below) shall be deemed to be revived with respect to the
Offered Stock and no sale or transfer of Key Stockholder Stock shall be effected without first offering the shares in accordance herewith.

2. Co-Sale Rights. In the event the Company and the Investors have not purchased all of the Offered Stock under their right of first refusal under Section 1 or in the event that any Investor proposes to transfer or sell
any shares of Common Stock and/or Preferred Stock of the Company, the Selling Stockholder or such Investor, as the case may be (the Co-Sale Seller), shall provide written notice by overnight courier (the Co-Sale
Notice) to all of the Key Stockholders and Investors (other than the Co-Sale Seller) informing them of the number and class or series of shares that such Co-Sale Seller intends to sell (the Co-Sale Shares) to a third
party or parties (the Co-Sale Transferee).

(a) Each Key Stockholder and Investor shall have the right to participate in
the proposed sale by the Co-Sale Seller and sell to the Co-Sale Transferee up to that number of shares of Common Stock and/or Preferred Stock equal to the product obtained by multiplying (i) the aggregate number of Co-Sale Shares covered by the
Co-Sale Notice by (ii) a fraction the numerator of which is the number of shares of Common Stock (assuming conversion of all issued and outstanding shares of Preferred Stock) held by such Investor or Key Stockholder on the date of the Co-Sale
Notice and the denominator of which is the total number of shares of Common Stock (assuming conversion of all issued and outstanding shares of Preferred Stock) held by all the Investors and Key Stockholders, including the Co-Sale Seller, on the date
of the Co-Sale Notice. To exercise such right of co-sale, the Investor or Key Stockholder must give written notice to the Selling Stockholder by overnight mail, within five (5) business days after receipt of the Co-Sale Notice of its election
to participate in such sale of Co-Sale Shares (such electing Investors and Key Stockholders are collectively referred to as the Participating Sellers). Any such participation shall be on the same terms and conditions as the
proposed sale of Co-Sale Shares. The delivery of the notice of election by a Participating Seller under this paragraph shall constitute an irrevocable commitment by such Participating Seller to sell such shares. To the extent one or more of the
Investors and/or Key Stockholders exercise such right of participation in accordance with the terms and conditions set forth below, the number of Co-Sale Shares that the Co-Sale Seller may sell to the Co-Sale Transferee in the transaction shall be
correspondingly reduced.

(b) Each Participating Seller shall effect its participation in the sale by promptly delivering to the Co-Sale
Seller for transfer to the Co-Sale Transferee one or more certificates, properly endorsed for transfer, which represent (i) the type and number of shares of Common Stock which the Co-Sale Seller elects to sell or (ii) that number of shares
of Preferred Stock which is at such time convertible into the number of shares of Common Stock which the Co-Sale Seller elects to sell; provided, however, that if the Co-Sale Transferee objects to the delivery of the Preferred Stock, in lieu of
Common Stock, the Participating Seller shall convert such Preferred Stock into Common Stock and deliver Common Stock as provided in subparagraph (i) above. The Company agrees to make any such conversion concurrent with the actual transfer of
such shares to the Co-Sale Transferee.



4



---

(c) The stock certificates which the Participating Sellers deliver to the Co-Sale Seller pursuant to
Section 2(b) shall be transferred by the Co-Sale Seller to the Co-Sale Transferee in consummation of the sale of the Co-Sale Shares pursuant to the terms and conditions specified in the Co-Sale Notice, and the Co-Sale Seller shall
promptly thereafter remit to each Participating Seller that portion of the sale proceeds to which the Participating Seller is entitled by reason of its or his participation in such sale.

(d) The exercise or non-exercise of the rights of the Investors or Key Stockholders hereunder to participate in one or more sales of Co-Sale Shares by a
Co-Sale Seller shall not adversely affect their rights to participate in subsequent sales by any Investors or Key Stockholders.

(e)
Notwithstanding the foregoing, the provisions of this Section 2 shall not apply to the sale of any Key Stockholder Stock by a Key Stockholder to the Company.

(f) The co-sale right set forth in this Section 2 may not be assigned or transferred, except that (i) such right is assignable by each Investor to any wholly-owned subsidiary or parent of, or to any
corporation, partner or entity that is, within the meaning of the Act, controlling, controlled by or under common control with, any such Investor, and (ii) such right is assignable between and among any of the Investors and Key Stockholders.

3. Invalid Transfers. Any sale, pledge, encumbrance, assignment or other transfer of Key Stockholder Stock or Co-Sale Shares, as
the case may be, by an Investor or Key Stockholder contrary to the provisions of Sections 1 and 2, as applicable, shall be null and void, and the transferee shall not be recognized by the Company as the holder or owner of the Key
Stockholder Stock or Co-Sale Shares, as the case may be, unless and until the Key Stockholder or Investor, as the case may be, has satisfied the requirements of Sections 1 and 2 with respect to such sale. The Key Stockholder or
Investor shall provide the Company with written evidence that such requirements have been met or waived prior to consummating any sale, assignment or other transfer of Key Stockholder Stock or Co-Sale Shares, as the case may be, and no Key
Stockholder Stock or Co-Sale Shares shall be transferred on the books of the Company until such written evidence thereof has been received by the Company.

4. Permitted Transfers. The restrictions contained in this Agreement with respect to transfers of shares of Key Stockholder Stock or Co-Sale Shares shall not apply (a) subject to Section 5
below, to any transfer or assignment, without consideration, by a Key Stockholder or Investor to the spouse of such Key Stockholder or Investor, issue of such Key Stockholder or Investor, including adopted children, or other relatives of such Key
Stockholder or Investor (including, for all purposes of this Agreement, persons related by marriage), or to any transfer to a trust or partnership for the exclusive benefit of such Key Stockholder or Investor and/or such Key Stockholders or
Investors spouse, issue, including adopted children, or other relatives and/or any charitable purpose, or to distributions made by such trust to the beneficiaries thereof; (b) subject to Section 5 below, to transfers by the
Key Stockholders or Investors executor, administrator or personal representative upon the death of such Key Stockholder or Investor; (c) any transfer or assignment by an Investor to an Affiliate (as defined in Section 7
hereof) of such Investor; (d) any transfer or assignment by a Key Stockholder that is not an individual to an Affiliate of such Key Stockholder; or (e) to any transfer of Key Stockholder Stock by a Key Stockholder (i) pursuant to a
statutory merger or statutory consolidation of the Company with or into another corporation or corporations or (ii) pursuant to a sale of the Companys Common Stock in a firm commitment underwritten public offering, or (f) to any
transfer of Co-Sale Shares by an Investor pursuant to a sale of the Companys Common Stock in a firm commitment underwritten public offering; provided, that in each of cases (a), (b), (c) and (d), each transferee, donee, heir or
distributee shall, as a condition precedent to such transfer, execute an adoption agreement as described in Section 10(c) of this Agreement.



5



---

5. Involuntary Transfers.

(a) In the event of any involuntary transfer by operation of law or otherwise pursuant to which any Key Stockholder shall be deprived or divested of any
right, title or interest in his Key Stockholder Stock (other than Key Stockholder Stock subject to repurchase by the Company upon an involuntary transfer pursuant to any other agreement between the Key Stockholder and the Company, the form of which
has been approved by the Board of Directors of the Company) (the Subject Stock), including in connection with any divorce or separation, or as a result of bankruptcy, reorganization, attachment, levy, execution, sequestration or
garnishment, or transfers in connection with pledge foreclosures, but excluding death, the Company and the Investors shall have the same option to purchase all of the Subject Stock so transferred as specified in Section 1 (except that
(i) the time periods for exercising the rights shall run from the date of receipt by the Company of notice of the involuntary transfer, (ii) the exercise notices shall be delivered to the transferee of the Subject Stock, and (iii) the
price per share of the Subject Stock shall be the fair market value thereof if the Company and/or the Investors elect to exercise the option to purchase any Subject Stock pursuant to this Section 5). Upon such a transfer, the persons
acquiring the Subject Stock and the Key Stockholder deprived or divested of the Subject Stock shall promptly notify the Secretary of the Company and the Investors in writing of such transfer and the identity of the person or persons who take or
propose to take an interest in the Subject Stock. Such person or persons shall hold such interest subject to the rights of the Company and the Investors pursuant to this Section 5.

(b) As used herein, fair market value shall mean the fair market value of a share of such Subject Stock, representing the price a
willing buyer would pay and at which a willing seller would sell, neither under any compulsion or duress, determined by valuing the consideration that would be received in a sale of one hundred percent (100%) of the equity of the Company (the
Company Value), as determined in good faith by the Board of Directors, and then allocating to the Subject Stock the portion of the Company Value that the Subject Stock would receive if the Company Value were distributed in a
liquidation under the terms of the Companys Certificate of Incorporation. Any notice of exercise of the option to purchase any Subject Stock pursuant to this Section 5 shall specify the purchase price determined by the Board of
Directors.

(c) If the transferee or proposed transferee disagrees with the purchase price determined by the Board of Directors, the
transferee and the Company (or the Investors, if the Company is not purchasing any shares of the Subject Stock) shall attempt to agree on the purchase price for a period of fifteen (15) days. If they are unable to reach agreement in such
fifteen (15) day period, then the transferee or proposed transferee and the Company (or the Investors, as applicable) shall agree on an independent appraiser skilled in valuing securities similar to the Subject Stock. If the parties cannot
agree on an independent appraiser, then each party shall, within ten (10) days, nominate an independent appraiser and the two (2) appraisers so nominated shall appoint a third appraiser skilled in valuing securities similar to the Subject
Stock within thirty (30) days of being appointed, and the determination of such third appraiser shall be conclusive and binding on all parties. If the fair market value of the Subject Stock as determined by the independent appraiser exceeds the
price determined by the Board of Directors by five percent (5%) or more, the fees and expenses of such appraiser shall be paid by the Company (or the Investors, as applicable). If the price determined by the independent appraiser does not
exceed the price determined by the Board of Directors by five percent (5%) or more, the fees and expenses of such appraiser shall be paid by the transferee. In the event that the Company and the Investors do not purchase all of the Subject
Stock involved in any involuntary transfer, the person or persons taking an interest in the Subject Stock shall take and hold all rights and interests in any Subject Stock not so purchased, subject to the terms of this Agreement.



6



---

6. Market Stand-Off.

(a) To the extent that an Investor or Key Stockholder is not a party to the Amended and Restated Investors Rights Agreement of even date herewith among the Company and stockholders of the Company identified on
Schedule A or Schedule B thereto, such Key Stockholder or Investor, as the case may be, hereby agrees that, during the period of duration specified by the Company and an underwriter of common stock or other securities of the Company,
following the effective date of a registration statement of the Company filed under the Act, it shall not, to the extent requested by the Company and such underwriter, directly or indirectly sell, offer to sell, contract to sell (including, without
limitation, any short sale), grant any option to purchase or otherwise transfer or dispose of (other than to donees who agree to be similarly bound) any securities of the Company held by it at any time during such period except Common Stock included
in such registration; provided, however, that such agreement shall not exceed one hundred eighty (180) days from the effective date of registration (which period may be extended upon the request of the managing underwriter for an additional
period of up to fifteen (15) days if the Company issues or proposes to issue an earnings or other public release within fifteen (15) days of the expiration of the 180-day lockup period). The foregoing provisions of this Section 6(a)
shall apply only to the Companys first underwritten public offering of its Common Stock pursuant to an effective registration statement under the Securities Act of 1933, as amended, resulting in at least $20 million of gross proceeds to the
Company (the IPO), shall not apply to the sale of any shares to an underwriter pursuant to an underwriting agreement, and shall only be applicable to Investors or Key Stockholders hereunder if all officers, directors and greater
than one percent (1%) stockholders of the Company enter into similar agreements. The underwriters in connection with the Companys IPO are intended third-party beneficiaries of this Section 6(a) and shall have the right, power and
authority to enforce the provisions hereof as though they were a party hereto. Each Investor and Key Stockholder subject to this Section 6(a) further agrees to execute such agreements as may be reasonably requested by the underwriters in the
Companys IPO that are consistent with this Section 6(a) or that are necessary to give further effect thereto. Any discretionary waiver or termination of the restrictions of any or all of such agreements by the Company or the underwriters
shall apply to all Investors and Key Stockholders subject to such agreements pro rata based on the number of shares subject to such agreements, except that, notwithstanding the foregoing, the Company and the underwriters may, in their sole
discretion, waive or terminate these restrictions with respect to up to 100,000 shares of the Companys Common Stock.

(b) In the
event of any stock dividend, stock split, recapitalization or other change affecting the Companys outstanding Common Stock effected without receipt of consideration, then any new, substituted or additional securities distributed with respect
to the Key Stockholder Stock shall be immediately subject to the provisions of Section 6(a), to the same extent the Key Stockholder Stock is at such time covered by such provisions.

(c) In order to enforce the foregoing covenant, the Company may impose stop-transfer instructions with respect to the shares of capital stock of the
Company held by the Investors and Key Stockholders (and the shares or securities of every other person subject to the foregoing restriction).

7. Drag Along Rights. If stockholders holding at least a majority of the outstanding shares of Series B Preferred Stock and Series C Preferred Stock of the Company, voting together as a single class and on an as-if-converted basis
(the Drag Along Holders) desire that there be effected (a) any consolidation or merger of the Company with or into any other corporation or other entity or person (or any other corporate reorganization) in which the
stockholders of the Company immediately prior to such consolidation, merger or reorganization, will own less than fifty percent (50%) of the voting power of the surviving entity immediately after such consolidation, merger or reorganization,
(b) any other transaction or series of related transactions to which the Company will be a party in which in excess of fifty percent (50%) of the Companys voting power is transferred, or (c) any transaction or series of related



7



---

transactions in which all or substantially all of the assets of the Company are sold, leased, exclusively licensed or otherwise disposed of, whereby each of
the transactions referred to above (i) is not with an Affiliate (as defined below) of the Company or any Drag-Along Holder and (ii) will result in the proceeds and/or consideration payable in respect of capital stock of the Company being
distributed or paid among the holders of Common Stock and Preferred Stock in relative amounts (based on the class(es) and/or series of capital stock they own) as if such proceeds and/or consideration had been distributed by the Company in connection
with a Deemed Liquidation Event (as defined in the Companys Amended and Restated Certificate of Incorporation as then in effect) (each of the transactions referred to in clauses (a), (b) and (c), and further limited by clauses
(i) and (ii), referred to herein as a Drag-Along Transaction), each Key Stockholder shall vote its Key Stockholder Stock for, consent to and otherwise raise no objections to the Drag-Along Transaction. If the Drag-Along
Transaction is structured as a consolidation or merger of the Company, or a sale of all or substantially all of the Companys assets, each Key Stockholder shall waive any dissenters rights, appraisal rights or similar rights in connection
with such consolidation, merger or asset sale. If the Drag-Along Transaction is structured as a sale of the stock of the Company, each Key Stockholder shall agree to sell its Key Stockholder Stock on the terms and conditions approved by the
Drag-Along Holders; provided, however, that no Key Stockholder shall be obligated in connection with such Drag-Along Transaction (x) to make any representation and warranty other than as to such Key Stockholders ownership of
the securities and the transfer of title thereof to the transferee, as to such Key Stockholders ability to transfer such securities free and clear of all liens and encumbrances (other than liens or encumbrances under the definitive agreement
with respect to such Drag-Along Transaction and under this Agreement), as to the fact that there are no required consents necessary to transfer ownership of such securities and as to such Key Stockholders authority to execute the applicable
definitive agreement and transfer such securities or (y) to indemnify the prospective transferee, its Affiliates or any other Person with respect to an amount in excess of the cash proceeds paid to such Key Stockholder in connection with such
Drag-Along Transaction (or, if less, such Key Stockholders pro rata share (based on the portion of the consideration for the securities of such Key Stockholder to be disposed of) of the amount due as a result of such indemnification); and any
indemnity given by any Key Stockholder shall be several and not joint and no Key Stockholder shall be required to execute a non-compete, non-solicitation, or other restrictive covenant of any kind in connection with such Drag-Along Transaction other
than a customary covenant with respect to the protection of confidential or proprietary information. Subject to the foregoing, each Key Stockholder shall take all necessary and desirable actions approved by the Drag-Along Holders in connection with
the consummation of the Drag-Along Transaction, including executing such agreements and instruments and taking such other actions as may be necessary to provide the representations, warranties, indemnities, covenants, conditions, escrow agreements
and other provisions and agreements relating to such Drag-Along Transaction. For the purposes of this Section 7, an Affiliate shall mean, with respect to any individual, corporation, partnership, association, trust, or
any other entity (in each case, a Person), any Person which, directly or indirectly, controls, is controlled by or is under common control with such Person, including, without limitation, any general partner, officer or director
of such Person.

8. Termination. This Agreement shall terminate (and neither the Company nor any Investor shall have any right under
this Agreement in conjunction with or at any time subsequent to) upon the earliest of (a) with respect to each Investor, that point in time when such Investor no longer owns shares of Common Stock issuable or issued upon conversion of the
Preferred Stock of the Company, (b) the effective date of the first registration statement for a public offering of the Companys securities filed pursuant to the Act, or (c) the consummation of a Deemed Liquidation Event
(as defined in the Amended and Restated Certificate of Incorporation of the Company as then in effect).



8



---

9. Legends.

(a) Legend. Each certificate representing shares of Key Stockholder Stock owned by any Key Stockholder or sold to any Permitted Transferee shall be endorsed with the following legend:

THE SALE OR TRANSFER OF THE SECURITIES REPRESENTED BY THIS CERTIFICATE IS SUBJECT TO THE TERMS AND CONDITIONS OF AN AMENDED AND RESTATED RIGHT OF
FIRST REFUSAL AND CO-SALE AGREEMENT BY AND AMONG THE STOCKHOLDER, THE COMPANY AND CERTAIN STOCKHOLDERS OF THE COMPANY. COPIES OF SUCH AGREEMENT MAY BE OBTAINED UPON WRITTEN REQUEST OF THE SECRETARY OF THE COMPANY.

(b) Legend Removal. The legend referred to in Section 9(a) hereof shall be removed upon termination of this Agreement in accordance
with the provisions of Section 8 above.



|10. | Miscellaneous.
|--- | --------------

(a) Entire Agreement. This
Agreement and the other documents delivered pursuant hereto and thereto constitute the full and entire understanding and agreement between the parties with regard to the subjects hereof and thereof and supersede any prior agreements or
understandings with respect thereto.

(b) Notice. Unless otherwise provided, all notices required or permitted hereunder shall be in
writing and shall be deemed effectively given (i) upon personal delivery to the party to be notified, (ii) when sent by confirmed facsimile if sent during normal business hours of the recipient, if not, then on the next business day,
(iii) five (5) days after having been sent by registered or certified mail, return receipt requested, postage prepaid, or (iv) one (1) day after deposit with a nationally recognized overnight courier, specifying next day
delivery, with written verification of receipt. All communications shall be sent to the address as set forth on the signature page hereof or Schedules hereto or at such other address as such party may designate by ten (10) days advance written
notice to the other parties hereto.

(c) Successors and Assigns.

(i) Except as provided herein, this Agreement and the rights and obligations of the parties hereunder shall inure to the benefit of, and
be binding upon, their respective successors, assigns and legal representatives. Nothing in this Agreement, express or implied, is intended to confer upon any party other than the parties hereto or their respective successors and assigns any rights,
remedies, obligations, or liabilities under or by reason of this Agreement, except as expressly provided in this Agreement.

(ii) Each transferee or assignee of the Key Stockholder Stock subject to this Agreement shall continue to be subject to the terms hereof, and, as a condition to the Companys recognizing such transfer, each transferee or assignee shall
agree in writing to be subject to each of the terms of this Agreement by executing and delivering an Adoption Agreement substantially in the form attached hereto as Exhibit A (the Adoption Agreement). Upon the execution and
delivery of an Adoption Agreement by any transferee, such transferee shall be deemed to be a party hereto as if such transferees signature appeared on the signature pages of this Agreement. By execution of this Agreement or of any Adoption
Agreement, each of the parties appoints the Company as its attorney in fact for the purpose of executing any Adoption Agreement that may



9



---

be required to be delivered under the terms of this Agreement. The Company shall not permit the transfer of any shares of Key Stockholder Stock subject to
this Agreement on its books or issue a new certificate representing any such shares of Key Stockholder Stock unless and until such transferee shall have complied with the terms of this Section 10(c). Each certificate representing
the Key Stockholder Stock subject to this Agreement if issued on or after the date of this Agreement shall be endorsed by the Company with the legend set forth in Section 9(a). Nothing in this Agreement, express or implied, is intended
to confer upon any party other than the parties or their respective executors, administrators, heirs, successors and assigns any rights, remedies, obligations, or liabilities under or by reason of this Agreement, except as expressly provided in this
Agreement.

(d) Spousal Consent. If any Key Stockholder is married on the date of this Agreement, such Key Stockholders spouse
shall execute and deliver to the Company a consent of spouse in the form of Exhibit B hereto (Consent of Spouse), effective on the date hereof. Notwithstanding the execution and delivery thereof, such consent shall not be
deemed to confer or convey to the spouse any rights in such Key Stockholders shares of capital stock that do not otherwise exist by operation of law or the agreement of the parties. If any Key Stockholder should marry or remarry subsequent to
the date of this Agreement, such Key Stockholder shall within thirty (30) days thereafter obtain his/her new spouses acknowledgement of and consent to the existence and binding effect of all restrictions contained in this Agreement by
causing such spouse to execute and deliver a Consent of Spouse acknowledging the restrictions and obligations contained in this Agreement and agreeing and consenting to the same.

(e) Amendments or Waivers. Neither this Agreement nor any term hereof may be amended, waived, discharged or terminated other than by a written
instrument signed by (i) the Company, (ii) the holders of a majority of the Common Stock issuable or issued upon conversion of the Companys Series B Preferred Stock, (iii) the holders of a majority of the Common Stock issuable
or issued upon conversion of the Companys Series C Preferred Stock, and (iv) the holders of a majority of the Key Stockholder Stock.

(f) Additional Investors. Notwithstanding anything to the contrary contained herein, if the Company issues additional shares of the Companys Series C Preferred Stock after the date hereof pursuant to a Series C Agreement, the
Company shall cause any purchaser of such shares of Series C Preferred Stock to execute a counterpart signature page hereto as an Investor, and such party shall thereby be bound by, and subject to, all the terms and provisions of this Agreement
applicable to an Investor.

(g) Additional Key Stockholders. In the event that after the date of this Agreement, the Company issues
shares of capital stock to any employee, which shares constitute one percent (1%) or more of the Companys then outstanding capital stock (treating for this purpose all shares of Common Stock issuable upon exercise of or conversion of
outstanding options, warrants or convertible securities, as if exercised or converted), the Company shall cause such person to execute a counterpart signature page hereto as a Key Stockholder, and such person shall thereby be bound by, and subject
to, all the terms and provisions of this Agreement applicable to a Key Stockholder.

(h) Counterparts. This Agreement may be
executed in any number of counterparts, each of which shall be deemed an original, but all of which together shall constitute one and the same instrument.

(i) Severability. In the event that any provision of this Agreement becomes or is declared by a court of competent jurisdiction to be illegal, unenforceable or void, this Agreement shall continue in full force
and effect without said provision. In such event, the parties shall negotiate, in good



10



---

faith, a valid, legal and enforceable substitute provision which most nearly effects the intent of the parties in entering into this Agreement.

(j) Governing Law. This Agreement shall be governed by and construed in accordance with the laws of the State of California as applied to
agreements between California residents entered into and performed in California.

(k) Aggregation of Stock. For the purposes of
determining the availability of any rights under this Agreement, the holdings of any transferee and assignee of an individual or a partnership who is a spouse, ancestor, lineal descendant or siblings of such individual or partners or retired
partners of such partnership or affiliates of such partnership (including spouses and ancestors, lineal descendants and siblings of such partners or spouses who acquire Common Stock by gift, will or intestate succession) shall be aggregated together
with the individual or partnership, as the case may be, for the purpose of exercising any rights or taking any action under this Agreement.

(l) Prior Agreement Superseded. Pursuant to Section 10(e) of the Prior Agreement, the undersigned parties who are parties to such Prior Agreement hereby amend and restate the Prior Agreement to read in its entirety as set forth
in this Agreement, all with the intent and effect that the Prior Agreement shall hereby be terminated and entirely replaced and superseded by this Agreement.

[SIGNATURE PAGES FOLLOW]



11



---

IN WITNESS WHEREOF, the parties have executed this Amended and Restated Right of First Refusal and
Co-Sale Agreement as of the date first above written.



COMPANY:UNIDYM, INC. a Delaware
corporationBy:Name:

Arthur L. SwiftTitle:

Chief Executive OfficerAddress:

1430 OBrien Drive, Suite G Menlo Park, CA 94025




---

IN WITNESS WHEREOF, the parties have executed this Amended and Restated Right of First Refusal and
Co-Sale Agreement as of the date first above written.



INVESTORS:ARROWHEAD RESEARCH CORPORATION a Delaware
corporationBy:Name:

R. Bruce StewartTitle:

Chief Executive OfficerAddress:

201 South Lake Avenue Suite 703 Pasadena, CA
91101-3074




---

IN WITNESS WHEREOF, the parties have executed this Amended and Restated Right of First Refusal and
Co-Sale Agreement as of the date first above written.



INVESTORS:Name:(Print Name of Investor)By:(Print name of signatory, if signing on behalf of entity)Title:(Print title of signatory, if signing on behalf of an entity)Signature:




---

EXHIBIT A

ADOPTION AGREEMENT

This Adoption Agreement (Adoption Agreement) is executed by
the undersigned (the Transferee) pursuant to the terms of that certain Amended and Restated Right of First Refusal and Co-Sale Agreement dated as of October [], 2007 (the
Agreement), by and among the Company, certain of its Investors and certain of its Key Stockholders. Capitalized terms used but not defined in this Adoption Agreement shall have the respective meanings ascribed to such terms in the
Agreement. By the execution of this Adoption Agreement, the Transferee agrees as follows:

1.1 Acknowledgement. Transferee
acknowledges that Transferee is acquiring certain shares of the capital stock of the Company (the Stock), subject to the terms and conditions of the Agreement.

1.2 Agreement. Transferee (i) agrees that the Stock acquired by Transferee shall be bound by and subject to the terms of the Agreement, and
(ii) hereby adopts the Agreement with the same force and effect as if Transferee were originally a Party thereto.

1.3 Notice.
Any notice required or permitted by the Agreement shall be given to Transferee at the address listed beside Transferees signature below.

EXECUTED AND DATED thisday of , 200.

TRANSFEREE



By:Name:Title:Address:Fax:




|                     |  | 
|-------------------- |  | 
|Accepted and Agreed:
|                    
|UNIDYM, INC.        
|                     | 
|By:                  |  | 
|Name:                |  | 
|Title:               |  | 



---

EXHIBIT B

CONSENT OF KEY STOCKHOLDERS SPOUSE

I acknowledge that I have read the foregoing Amended and
Restated Right of First Refusal and Co-Sale Agreement, dated October [], 2007, among Unidym, Inc., a Delaware corporation (the Company), the Key Stockholders and the Investors (each as defined
therein) (the Co-Sale Agreement) and that I know its contents. I am aware that by its provisions if I and/or my spouse agree to sell all or part of the shares of the Company held of record by either or both of us, including my
community property interest in such shares, if any, (i) a right of first refusal must be provided to the Company and the Investors and (ii) a co-sale right (as described in the Co-Sale Agreement) must also be granted to the Investors by
the seller. I hereby agree that those shares and my interest in them, if any, are subject to the provisions of the Co-Sale Agreement and that I will take no action at any time to hinder operation of, or violate, the Co-Sale Agreement.



Signature:Print Name:Spouse of:Date:




---

SCHEDULE A

SCHEDULE OF INVESTORS

Arrowhead Research Corporation

201 South Lake Avenue, Suite 703

Pasadena, CA 91101

[Additional Investors]

[Additional Series C Investors]



---

SCHEDULE B

SCHEDULE OF KEY STOCKHOLDERS

[List of Key Stockholders]



---

Exhibit C

Form of

Restated Certificate of Incorporation



---

AMENDED AND RESTATED CERTIFICATE OF INCORPORATION

OF

UNIDYM, INC.

(Pursuant to Sections 242 and 245 of the

General Corporation Law of the State of Delaware)

Unidym, Inc., a corporation organized and existing under and by virtue of the
provisions of the General Corporation Law of the State of Delaware (the General Corporation Law),

DOES HEREBY CERTIFY:

1. That the name of this corporation is Unidym, Inc., and that this corporation was originally incorporated pursuant to the General
Corporation Law on April 4, 2005 under the name NanoPolaris, Inc.

2. That the Board of Directors duly adopted resolutions proposing
to amend and restate the Certificate of Incorporation of this corporation, declaring said amendment and restatement to be advisable and in the best interests of this corporation and its stockholders, and authorizing the appropriate officers of this
corporation to solicit the consent of the stockholders therefor, which resolution setting forth the proposed amendment and restatement is as follows:

RESOLVED, that the Certificate of Incorporation, as amended, of this corporation be amended and restated in its entirety to read as follows:

FIRST: The name of this corporation is Unidym, Inc. (the Corporation).

SECOND: The address of the registered office of the Corporation in the State of Delaware is 2711 Centerville Road, Suite 400, in the City of
Wilmington, County of New Castle. The name of its registered agent at such address is Corporation Service Company.

THIRD: The
nature of the business or purposes to be conducted or promoted is to engage in any lawful act or activity for which corporations may be organized under the General Corporation Law.

FOURTH: The total number of shares of all classes of stock which the Corporation shall have authority to issue is (i) 40,000,000 shares of
Common Stock, $0.0001 par value per share (Common Stock), and (ii) 19,173,252 shares of Preferred Stock, $0.0001 par value per share (Preferred Stock), of which 5,000,000 shares are designated as Series A
Convertible Preferred Stock (Series A Preferred Stock), 5,673,252 shares are designated as Series B Senior Convertible Preferred Stock (Series B Preferred Stock), and 8,500,000 shares are designated as Series C
Senior Convertible Preferred Stock (Series C Preferred Stock and collectively with the Series A Preferred Stock and the Series B Preferred Stock, the Preferred Stock), with the following rights, preferences,
powers, privileges and restrictions, qualifications and limitations.



1



---

The following is a statement of the designations and the powers, privileges and rights, and the
qualifications, limitations or restrictions thereof in respect of each class of capital stock of the Corporation. Unless otherwise indicated, references to Sections or Subsections in this Article Fourth refer to sections and
subsections of this Article Fourth.

A. COMMON STOCK

1. General. The voting, dividend and liquidation rights of the holders of the Common Stock are subject to and qualified by the rights, powers and preferences of the holders of the Preferred Stock set forth herein.

2. Voting. The holders of the Common Stock are entitled to one vote for each share of Common Stock held at all meetings of stockholders (and
written actions in lieu of meetings). The number of authorized shares of Common Stock may be increased or decreased (but not below the number of shares thereof then outstanding) by (in addition to any vote of the holders of one or more series of
Preferred Stock that may be required by the terms of the Certificate of Incorporation) the affirmative vote of the holders of shares of capital stock of the Corporation representing a majority of the votes represented by all outstanding shares of
capital stock of the Corporation entitled to vote, irrespective of the provisions of Section 242(b)(2) of the General Corporation Law.

B. PREFERRED
STOCK

The Preferred Stock shall have the following rights, preferences, powers, privileges and restrictions, qualifications and
limitations.

1. Dividend Rights.

1.1 Series C Preferred Stock. The holders of shares of Series C Preferred Stock shall be entitled to receive, when and if declared by the Board of Directors of the Corporation, out of any assets legally
available therefor, non-cumulative dividends at such rate per share per annum as may be determined by the Board of Directors of the Corporation, prior and in preference to any declaration or payment of any cash dividend on the Series A Preferred
Stock, Series B Preferred Stock or Common Stock of the Corporation.

1.2 Series A Preferred Stock and Series B Preferred Stock.
Subject to the prior dividend rights of the Series C Preferred Stock set forth in subsection 1.1, the holders of shares of Series A Preferred Stock and Series B Preferred Stock shall be entitled to receive, when and if declared by the
Board of Directors of the Corporation, out of any assets legally available therefor, non-cumulative dividends at such rate per share per annum as may be determined by the Board of Directors of the Corporation, prior and in preference to any
declaration or payment of any cash dividend on the Common Stock of the Corporation. Any such dividends shall be distributed among the holders of Series A Preferred Stock and Series B Preferred Stock pro rata based on the number of shares of Common
Stock held by each, determined on an as-if-converted basis (assuming full conversion of all such Series A Preferred Stock and Series B Preferred Stock) as of the record date with respect to the declaration of such dividends.

1.3 Participation Rights. If, after dividends, if any, in the full amounts specified in subsections 1.1 and 1.2 for the Preferred
Stock have been paid or declared, the Board of Directors of the Corporation may, when, as and if declared by the Board of Directors of the Corporation, declare additional dividends out of assets legally available therefor. Any such dividends shall
be distributed pro rata among the holders of the Common Stock and the holders of the Preferred Stock on a pari passu basis



2



---

based on the number of shares of Common Stock held by each, determined on an as-if-converted basis (assuming full conversion of all such Preferred Stock) as
of the record date with respect to the declaration of such dividends.

2. Liquidation, Dissolution or Winding Up; Certain Mergers,
Consolidations and Asset Sales.

2.1 Payments to Holders of Series C Preferred Stock. In the event of any voluntary or
involuntary liquidation, dissolution or winding up of the Corporation or Deemed Liquidation Event (as defined below) the holders of shares of Series C Preferred Stock then outstanding shall be entitled to be paid out of the assets of the Corporation
available for distribution to its stockholders before any payment shall be made to the holders of Series A Preferred Stock, Series B Preferred Stock or Common Stock by reason of their ownership thereof, an amount per share equal to the greater of
(i) $1.80 (subject to appropriate adjustment in the event of any stock dividend, stock split, combination or other similar recapitalization with respect to the Series C Preferred Stock) (the Series C Original Issue Price),
plus any dividends declared but unpaid thereon, or (ii) such amount per share as would have been payable had each such share of Series C Preferred Stock been converted into Common Stock pursuant to Section 4 immediately prior to such
liquidation, dissolution or winding up (the amount payable pursuant to this sentence is hereinafter referred to as the Series C Liquidation Amount). If upon any such voluntary or involuntary liquidation, dissolution or winding up
of the Corporation or Deemed Liquidation Event, the assets of the Corporation available for distribution to its stockholders shall be insufficient to pay the holders of shares of Series C Preferred Stock the full amount to which they shall be
entitled under this Subsection 2.1, the holders of shares of Series C Preferred Stock shall share ratably in any distribution of the assets available for distribution in proportion to the respective amounts which would otherwise be
payable in respect of the shares held by them upon such distribution if all amounts payable on or with respect to such shares were paid in full.

2.2 Payments to Holders of Series B Preferred Stock. Subject to payment in full of the Series C Liquidation Amount as provided in Section 2.1 above, in the event of any voluntary or involuntary liquidation, dissolution or
winding up of the Corporation or Deemed Liquidation Event, the holders of shares of Series B Preferred Stock then outstanding shall be entitled to be paid out of the assets of the Corporation available for distribution to its stockholders before any
payment shall be made to the holders of Series A Preferred Stock and Common Stock by reason of their ownership thereof, an amount per share equal to the greater of (i) $1.938923 (subject to appropriate adjustment in the event of any stock
dividend, stock split, combination or other similar recapitalization with respect to the Series B Preferred Stock) (the Series B Original Issue Price), plus any dividends declared but unpaid thereon or (ii) such amount per
share as would have been payable had each such share of Series B Preferred Stock been converted into Common Stock pursuant to Section 4 immediately prior to such liquidation, dissolution or winding up (the amount payable pursuant to this
sentence is hereinafter referred to as the Series B Liquidation Amount). If upon any such voluntary or involuntary liquidation, dissolution or winding up of the Corporation or Deemed Liquidation Event, the assets of the
Corporation available for distribution to its stockholders shall be insufficient to pay the holders of shares of Series B Preferred Stock the full amount to which they shall be entitled under this Subsection 2.2, the holders of shares of
Series B Preferred Stock shall share ratably in any distribution of the assets available for distribution in proportion to the respective amounts which would otherwise be payable in respect of the shares held by them upon such distribution if all
amounts payable on or with respect to such shares were paid in full.

2.3 Payments to Holders of Common Stock. In the event of any
voluntary or involuntary liquidation, dissolution or winding up of the Corporation or Deemed Liquidation Event, after the payment of all preferential amounts required to be paid to the holders of shares of Series C Preferred Stock pursuant to
Subsection 2.1 and Series B Preferred Stock pursuant to Subsection 2.2, the remaining



3



---

assets of the Corporation available for distribution to its stockholders shall be distributed among the holders of shares of Common Stock, pro rata based on
the number of shares held by each such holder and after giving effect to the conversion of all shares of Series A Preferred Stock pursuant to Section 4.1.1 or Section 5.1 hereof, as applicable. Notwithstanding the foregoing, no payments
shall be made to the holders of shares of Common Stock under this Section 2.3 unless all of the issued and outstanding shares of Series A Preferred Stock have converted into shares of Common Stock.

2.4 Deemed Liquidation Events.

2.4.1 Definition. Each of the following events shall be considered a Deemed Liquidation Event unless the holders of at least a majority of the outstanding shares of Series B Preferred Stock and at least a
majority of the outstanding shares of Series C Preferred Stock (each voting separately as a class and on as-if-converted basis) elect otherwise by written notice sent to the Corporation at least 5 days prior to the effective date of any such event:

(a) a merger, reorganization or consolidation in which



| | (i) | the Corporation is a constituent party or
| | --- | -----------------------------------------



| | (ii) | a subsidiary of the Corporation is a constituent party and the Corporation issues shares of its capital stock pursuant to such merger or consolidation,
| | ---- | -------------------------------------------------------------------------------------------------------------------------------------------------------

except any such merger, reorganization or consolidation involving the Corporation or a subsidiary in which the shares of capital stock of the Corporation outstanding
immediately prior to such merger or consolidation continue to represent, or are converted into or exchanged for shares of capital stock that represent, immediately following such merger, reorganization or consolidation, at least a majority, by
voting power, of the capital stock of (1) the surviving or resulting corporation or entity or (2) if the surviving or resulting corporation or entity is a wholly owned subsidiary of another corporation or entity immediately following such
merger, reorganization or consolidation, the parent corporation or entity of such surviving or resulting corporation or entity (provided that, for the purpose of this Subsection 2.4.1, all shares of Common Stock issuable upon exercise
of Options (as defined below) outstanding immediately prior to such merger or consolidation or upon conversion of Convertible Securities (as defined below) outstanding immediately prior to such merger or consolidation shall be deemed to be
outstanding immediately prior to such merger or consolidation and, if applicable, converted or exchanged in such merger or consolidation on the same terms as the actual outstanding shares of Common Stock are converted or exchanged); or

(b) the sale, lease, exclusive license, transfer or other disposition, in a single transaction or series of related transactions, by the Corporation
or any subsidiary of the Corporation of all or substantially all the assets of the Corporation and its subsidiaries taken as a whole or the sale or disposition (whether by merger or otherwise) of one or more subsidiaries of the Corporation if
substantially all of the assets of the Corporation and its subsidiaries taken as a whole are held by such subsidiary or subsidiaries, except where such sale, lease, exclusive license, transfer or other disposition is to a wholly owned subsidiary of
the Corporation; or

(c) a transaction or series of related transactions of the Corporation in which a person, or a group of related
persons, acquires shares representing fifty percent (50%) or more of the outstanding voting power of the Corporation, except equity securities of the Corporation in a bona fide private financing transaction of the Corporation.



4



---

2.4.2 Effecting a Deemed Liquidation Event.

(a) The Corporation shall not have the power to effect a Deemed Liquidation Event referred to in Subsection 2.4.1(a)(i)above unless the
agreement or plan of merger, reorganization or consolidation for such transaction (the Merger Agreement) provides that the consideration payable to the stockholders of the Corporation shall be allocated among the holders of
capital stock of the Corporation in accordance with Subsections 2.1, 2.2 and 2.3 above.

(b) In the event of a Deemed
Liquidation Event referred to in Subsection 2.4.1(a)(ii), 2.4.1(b), or 2.4.1(c) above, if the Corporation does not effect a dissolution of the Corporation under the General Corporation Law within 90 days after such Deemed Liquidation
Event, then (i) the Corporation shall send a written notice to each holder of Series B Preferred Stock and each holder of Series C Preferred Stock no later than the 90th day after the Deemed Liquidation Event advising such holders of their
right (and the requirements to be met to secure such right) pursuant to the terms of the following clause (ii) to require the redemption of such shares of Series B Preferred Stock and such shares of Series C Preferred Stock, and (ii) if
both the holders of at least a majority of the then outstanding shares of Series B Preferred Stock (voting together as a single series) and the holders of a least a majority of the then outstanding shares of Series C Preferred Stock (voting together
as a single series) so request in a written instrument delivered to the Corporation not later than 120 days after such Deemed Liquidation Event, the Corporation shall use the consideration received by the Corporation for such Deemed Liquidation
Event (net of any retained liabilities associated with the assets sold or technology licensed, as determined in good faith by the Board of Directors of the Corporation) (the Net Proceeds), to the extent legally available therefor,
on the 150th day after such Deemed Liquidation Event (the Liquidation Redemption Date), to redeem all outstanding shares of Series B Preferred Stock at a price per share equal to the Series B Liquidation Amount and to redeem all
outstanding shares of Series C Preferred Stock at a price per share equal to the Series C Liquidation Amount. Notwithstanding the foregoing, in the event of a redemption pursuant to the preceding sentence, if the Available Proceeds are not
sufficient to redeem all outstanding shares of Series B Preferred Stock at a price per share equal to the Series B Liquidation Amount and to redeem all outstanding shares of Series C Preferred Stock at a price per share equal to the Series C
Liquidation Amount, then the Corporation shall, as soon as practicable after the Corporation has funds legally available therefor, first redeem all outstanding shares of Series C Preferred Stock at a price per share equal to the Series C Liquidation
Amount to the fullest extent of such Available Proceeds (distributed among such holders as provided in the last sentence of subsection 2.1) and shall thereafter redeem all outstanding shares of Series B Preferred Stock at a price per share
equal to the Series B Liquidation Amount to the fullest extent of such Available Proceeds (distributed among such holders as provided in the last sentence of subsection 2.2). The provisions of subsections 6.2 through 6.4 below
shall apply, with such necessary changes in the details thereof as are necessitated by the context, to the redemption of the Series B Preferred Stock and Series C Preferred Stock pursuant to this subsection 2.4.2(b). Prior to the distribution
or redemption provided for in this subsection 2.4.2(b), the Corporation shall not expend or dissipate the consideration received for such Deemed Liquidation Event, except to discharge expenses incurred in connection with such Deemed
Liquidation Event or in the ordinary course of business.

2.4.3 Amount Deemed Paid or Distributed. The amount deemed paid or
distributed to the holders of capital stock of the Corporation upon any such merger, reorganization, consolidation, sale, lease, acquisition, transfer, exclusive license, other disposition or redemption shall be the cash or the value of the
property, rights or securities paid or distributed to such holders by the Corporation or the acquiring person, firm or other entity. If the amount deemed paid or distributed under this Subsection 2.4.3 is made in property other than in cash,
the value of such distribution shall be the fair market value of such property, determined as follows:



5



---

(a) For securities not subject to investment letters or other similar restrictions on free
marketability,



| | (i) | if traded on a securities exchange or the NASDAQ Stock Market, the value shall be deemed to be the average of the closing prices of the securities on such exchange or market over
the 30-trading day period ending three trading days prior to the closing of such transaction;
| | --- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (ii) | if actively traded over-the-counter, the value shall be deemed to be the average of the closing bid prices over the 30-trading day period ending three trading days prior to the
closing of such transaction; or
| | ---- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (iii) | if there is no active public market, the value shall be the fair market value thereof, as determined in good faith by the Board of Directors of the Corporation.
| | ----- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------

(b) The method of valuation of securities subject to investment letters or other similar restrictions on free marketability
(other than restrictions arising solely by virtue of a stockholders status as an affiliate or former affiliate) shall take into account an appropriate discount (as determined in good faith by the Board of Directors of the Corporation) from the
market value as determined pursuant to clause (a) above so as to reflect the approximate fair market value thereof.

2.4.4
Allocation of Escrow or Contingent Payments. In the case of a Deemed Liquidation Event above, if any portion of the consideration payable to the stockholders of the Corporation is placed into escrow and/or is payable to the stockholders of
the Corporation subject to contingencies, the Merger Agreement shall provide that (a) the portion of such consideration that is not placed in escrow and not subject to any contingencies (the Initial Consideration) shall be
allocated among the holders of capital stock of the Corporation in accordance with Subsections 2.1, 2.2 and 2.3above as if the Initial Consideration were the only consideration payable in connection with such Deemed Liquidation
Event and (b) any additional consideration which becomes payable to the stockholders of the Corporation upon release from escrow or satisfaction of contingencies shall be allocated among the holders of capital stock of the Corporation in
accordance with Subsections 2.1, and 2.2 and 2.3above after taking into account the previous payment of the Initial Consideration as part of the same transaction.

3. Voting.

3.1 General. On
any matter presented to the stockholders of the Corporation for their action or consideration at any meeting of stockholders of the Corporation (or by written consent of stockholders in lieu of meeting), each holder of outstanding shares of Series B
Preferred Stock and Series C Stock shall be entitled to cast the number of votes equal to the number of whole shares of Common Stock into which the shares of Series B Preferred Stock or Series C Preferred Stock (as applicable) held by such
holder are convertible as of the record date for determining stockholders entitled to vote on such matter. Except as provided by law or by the other provisions of the Certificate of Incorporation, holders of Series B Preferred Stock and Series C
Preferred Stock shall vote together with the holders of Common Stock as a single class. Holders of Series A Preferred Stock shall vote together as a single class as required by law or expressly set forth in this Certificate of Incorporation and
shall not vote together with the holders of Common Stock, Series B Preferred Stock or Series C Preferred Stock on an as-converted to Common Stock basis on matters that are not otherwise expressly set forth in this Certificate of Incorporation.



6



---

3.2 Election of Directors. The holders of record of the shares of Series A Preferred Stock,
exclusively and as a separate class, shall be entitled to elect two (2) directors of the Corporation (the Series A Directors), the holders of record of the shares of Series B Preferred Stock, exclusively and as a separate
class, shall be entitled to elect three (3) directors of the Corporation (the Series B Directors), the holders of record of the shares of Series C Preferred Stock, exclusively and as a separate class, shall be entitled to
elect one (1) director of the Corporation (the Series C Director) and the holders of record of the shares of Common Stock, exclusively and as a separate class, shall be entitled to elect one (1) director of the
Corporation (the Common Director). Any director elected as provided in the preceding sentence may be removed without cause by, and only by, the affirmative vote of the holders of the shares of the class or series of capital stock
entitled to elect such director or directors, given either at a special meeting of such stockholders duly called for that purpose or pursuant to a written consent of stockholders. The holders of record of the shares of Common Stock and of any other
class or series of voting stock (including the Series A Preferred Stock, Series B Preferred Stock and Series C Preferred Stock), voting together as a single class, shall be entitled to elect the balance of the total number of directors of the
Corporation. At any meeting held for the purpose of electing a director, the presence in person or by proxy of the holders of a majority of the outstanding shares of the class or series entitled to elect such director shall constitute a quorum for
the purpose of electing such director. A vacancy in any directorship filled by the holders of any class or series may be filled by vote or written consent in lieu of a meeting of the holders of such class or series or by any remaining director or
directors elected by the holders of such class or series pursuant to this Subsection 3.2.

3.3 Series A Preferred Stock
Protective Provisions. At any time prior to a Liquidity Event (as defined below) and so long as any shares of Series A Preferred Stock are outstanding, the Corporation shall not, either directly or indirectly by amendment, merger, consolidation
or otherwise, do any of the following without (in addition to any other vote required by law or the Certificate of Incorporation) the written consent or affirmative vote of the holders of at least a majority of the then outstanding shares of Series
A Preferred Stock, given in writing or by vote at a meeting, consenting or voting (as the case may be) separately as a class:

(a) Issue or
sell, or agree to issue or sell, in a transaction or series of related transactions, equity securities of the Corporation in a bona fide private financing transaction of the Corporation, including any strategic financing transaction, or to an
affiliate of the Corporation or the parent entity of the Corporation or in a private financing transaction that is not bona fide;

(b)
Sell, or agree to sell, shares of Common Stock to the public in a public offering, unless such offering is a Qualified IPO;

(c) Take any
action that results in the purchase, repurchase, redemption, retirement or other acquisition for value by the Corporation of any Common Stock, other than (i) acquisitions of Common Stock by the Corporation pursuant to agreements with employees,
advisors, consultants or service providers that permit the Corporation to repurchase such shares upon termination of services to the Corporation or (ii) acquisitions of Common Stock by the Corporation upon the exercise of the Corporations
right of first refusal upon a proposed transfer;

(d) Increase or decrease (other than by conversion as provided in the Certificate of
Incorporation) the aggregate number of authorized shares of Series A Preferred Stock; or

(e) Amend the Certificate of Incorporation in
any manner that adversely affects the rights, preferences, powers or privileges of the Series A Preferred Stock.



7



---

For purposes of this Section 3.3, a Liquidity Event shall mean (i) a Deemed Liquidation
Event in which the acquiring or merging entity is a third party unaffiliated with the Corporation or the parent entity of the Corporation, or (ii) a Qualified IPO (as defined below).

3.4 Series C Preferred Stock Protective Provisions. At any time prior to a Liquidity Event (as defined above) and so long as any shares of Series
C Preferred Stock are outstanding, the Corporation shall not, either directly or indirectly by amendment, merger, consolidation or otherwise, do any of the following without (in addition to any other vote required by law or the Certificate of
Incorporation) the written consent or affirmative vote of the holders of at least a majority of the then outstanding shares of Series C Preferred Stock, given in writing or by vote at a meeting, consenting or voting (as the case may be) separately
as a class:

(a) Take any action that results in the purchase, repurchase, redemption, retirement or other acquisition for value by the
Corporation of any Common Stock, other than (i) acquisitions of Common Stock by the Corporation pursuant to agreements with employees, advisors, consultants or service providers that permit the Corporation to repurchase such shares upon
termination of services to the Corporation, (ii) acquisitions of Common Stock by the Corporation upon the exercise of the Corporations right of first refusal upon a proposed transfer or (iii) as approved by the Corporations
Board of Directors;

(b) Increase or decrease (other than by conversion as provided in the Certificate of Incorporation) the aggregate
number of authorized shares of Series C Preferred Stock;

(c) Authorize or issue (by reclassification or otherwise) any capital stock of
the Corporation having rights, preferences or privileges senior to or on a parity with the Series C Preferred Stock with respect to dividend rights, conversion rights, liquidation rights, redemption rights, voting rights or any other rights;

(d) Amend the Certificate of Incorporation in any manner that materially and adversely affects the rights, preferences, powers or
privileges of the Series C Preferred Stock; or

(e) Increase or decrease the authorized number of directors constituting the
Corporations Board of Directors.

4. Optional Conversion.

The holders of the Preferred Stock shall have conversion rights as follows (the Conversion Rights):

4.1 Right to Convert.

4.1.1
Conversion Ratio. Except as otherwise provided in Subsection 5.1, each share of Series A Preferred Stock (i) upon the liquidation, dissolution and winding up of the Corporation, (ii) upon a Deemed Liquidation Event, or
(iii) upon a Qualified IPO (as defined below) shall automatically be converted, without the payment of additional consideration by the holder thereof, into 1.680096462 fully paid and nonassessable shares of Common Stock (the Series A
Conversion Rate). Each share of Series B Preferred Stock shall be convertible, at the option of the holder thereof, at any time and from time to time, and without the payment of additional consideration by the holder thereof, into
1.000042304 fully paid and nonassessable shares of Common Stock (the Series B Conversion Rate). Each share of Series C Preferred Stock shall be convertible, at the option of the holder thereof, at any time



8



---

and from time to time, and without the payment of additional consideration by the holder thereof, into one (1) fully paid and nonassessable share of
Common Stock (the Series C Conversion Rate). Such initial Series A Conversion Rate, Series B Conversion Rate and Series C Conversion Rate shall be subject to adjustment as provided below.

4.1.2 Termination of Conversion Rights. In the event of a liquidation, dissolution or winding up of the Corporation or a Deemed
Liquidation Event, the Conversion Rights shall terminate at the close of business on the last full day preceding the date fixed for the payment of any such amounts distributable on such event to the holders of Preferred Stock.

4.2 Fractional Shares. No fractional shares of Common Stock shall be issued upon conversion of the Preferred Stock. In lieu of any fractional
shares to which the holder would otherwise be entitled, the Corporation shall pay cash equal to such fraction multiplied by the fair market value of a share of Common Stock as determined in good faith by the Board of Directors of the Corporation.
Whether or not fractional shares would be issuable upon such conversion shall be determined on the basis of the total number of shares of Preferred Stock the holder is at the time converting into Common Stock and the aggregate number of shares of
Common Stock issuable upon such conversion.

4.3 Mechanics of Conversion.

4.3.1 Notice of Conversion. In order for a holder of Preferred Stock to convert shares of Preferred Stock into shares of Common Stock, such
holder shall surrender the certificate or certificates for such shares of Preferred Stock (or, if such registered holder alleges that such certificate has been lost, stolen or destroyed, a lost certificate affidavit and agreement reasonably
acceptable to the Corporation to indemnify the Corporation against any claim that may be made against the Corporation on account of the alleged loss, theft or destruction of such certificate), at the office of the transfer agent for the Preferred
Stock (or at the principal office of the Corporation if the Corporation serves as its own transfer agent), together with written notice that such holder is converting all or any number of the shares of the Preferred Stock represented by such
certificate or certificates and, if applicable, any event on which such conversion is contingent. Such notice shall state such holders name or the names of the nominees in which such holder wishes the certificate or certificates for shares of
Common Stock to be issued. If required by the Corporation, certificates surrendered for conversion shall be endorsed or accompanied by a written instrument or instruments of transfer, in form satisfactory to the Corporation, duly executed by the
registered holder or his, her or its attorney duly authorized in writing. The close of business on the date of receipt by the transfer agent (or by the Corporation if the Corporation serves as its own transfer agent) of such certificates (or lost
certificate affidavit and agreement) and notice shall be the time of conversion (the Conversion Time), and the shares of Common Stock issuable upon conversion of the shares represented by such certificate shall be deemed to be
outstanding of record as of such date. The Corporation shall, as soon as practicable after the Conversion Time, issue and deliver to such holder of Preferred Stock, or to his, her or its nominees, a certificate or certificates for the number of full
shares of Common Stock issuable upon such conversion in accordance with the provisions hereof, a certificate for the number (if any) of the shares of Preferred Stock represented by the surrendered certificate that were not converted into Common
Stock, and cash as provided in Subsection 4.2 in lieu of any fraction of a share of Common Stock otherwise issuable upon such conversion and payment of any declared but unpaid dividends on the shares of Preferred Stock converted.

4.3.2 Reservation of Shares. The Corporation shall at all times when the Preferred Stock shall be outstanding, reserve and keep
available out of its authorized but unissued capital stock, for the purpose of effecting the conversion of the Preferred Stock, such number of its duly authorized shares of Common Stock as shall from time to time be sufficient to effect the
conversion of all outstanding Preferred Stock; and if at any time the number of authorized but unissued shares of Common



9



---

Stock shall not be sufficient to effect the conversion of all then outstanding shares of the Preferred Stock, the Corporation shall take such corporate
action as may be necessary to increase its authorized but unissued shares of Common Stock to such number of shares as shall be sufficient for such purposes, including, without limitation, engaging in best efforts to obtain the requisite stockholder
approval of any necessary amendment to the Certificate of Incorporation.

4.3.3 Effect of Conversion. All shares of
Preferred Stock which shall have been surrendered for conversion as herein provided shall no longer be deemed to be outstanding and all rights with respect to such shares shall immediately cease and terminate at the Conversion Time, except only the
right of the holders thereof to receive shares of Common Stock in exchange therefor and to receive payment of any dividends declared but unpaid thereon. Any shares of Preferred Stock so converted shall be retired and cancelled and may not be
reissued as shares of such series, and the Corporation may thereafter take such appropriate action (without the need for stockholder action) as may be necessary to reduce the authorized number of shares of Preferred Stock accordingly.

4.3.4 No Further Adjustment. Upon any such conversion, no adjustment to the Series A Conversion Rate, Series B Conversion Rate or Series C
Conversion Rate, as applicable, shall be made for any declared but unpaid dividends on the Preferred Stock surrendered for conversion or on the Common Stock delivered upon conversion.

4.3.5 Taxes. The Corporation shall pay any and all issue and other similar taxes that may be payable in respect of any issuance or
delivery of shares of Common Stock upon conversion of shares of Preferred Stock pursuant to this Section 4. The Corporation shall not, however, be required to pay any tax which may be payable in respect of any transfer involved in the issuance
and delivery of shares of Common Stock in a name other than that in which the shares of Preferred Stock so converted were registered, and no such issuance or delivery shall be made unless and until the person or entity requesting such issuance has
paid to the Corporation the amount of any such tax or has established, to the satisfaction of the Corporation, that such tax has been paid.

4.4 Adjustments to Series C Conversion Price for Diluting Issues.

4.4.1 Special Definitions. For purposes of
this Article Fourth, the following definitions shall apply:

(a) First Carveout Limit shall mean an aggregate of
1,640,000 shares issued under subsections 4.4.1(d)(iii), (v), (vi) and (viii); such number of shares is to be (A) calculated net of any repurchases of such shares by the Company, (B) calculated net of any such expired or
terminated options, warrants or rights and (C) proportionally adjusted to reflect any stock dividend, stock split, combination or other similar recapitalization with respect to the Common Stock.

(b) Second Carveout Limit shall mean an aggregate of 8,200,000 shares issued under subsection 4.4.1(d)(vii); such number of
shares is to be proportionally adjusted to reflect any stock dividend, stock split, combination or other similar recapitalization with respect to the Common Stock.

(c) Option shall mean rights, options or warrants to subscribe for, purchase or otherwise acquire Common Stock or Convertible Securities.

(d) Series C Original Issue Date shall mean the date on which the first share of Series C Preferred Stock was issued.



10



---

(e) Convertible Securities shall mean any evidences of indebtedness, shares or other
securities directly or indirectly convertible into or exchangeable for Common Stock, but excluding Options.

(f) Additional
Shares of Common Stock shall mean all shares of Common Stock issued (or, pursuant to Subsection 4.4.3 below, deemed to be issued) by the Corporation after the Series C Original Issue Date, other than (1) the following shares of
Common Stock and (2) shares of Common Stock deemed issued pursuant to the following Options and Convertible Securities (clauses (1) and (2), collectively, Exempted Securities):



| | (i) | shares of Common Stock, Options or Convertible Securities issued as a dividend or distribution on Series C Preferred Stock;
| | --- | ---------------------------------------------------------------------------------------------------------------------------



| | (ii) | shares of Common Stock, Options or Convertible Securities issued by reason of a dividend, stock split, split-up or other distribution on shares of Common Stock that is covered by
Subsection 4.5, 4.6, 4.7 or 4.8;
| | ---- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (iii) | Up to the First Carveout Limit, shares of Common Stock or Options issued to employees or directors of, or consultants or advisors to, the Corporation or any of its subsidiaries
pursuant to a plan, agreement or arrangement approved by the Board of Directors of the Corporation or by the Compensation Committee of the Board of Directors;
| | ----- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (iv) | shares of Common Stock or Convertible Securities actually issued upon the exercise of Options or shares of Common Stock actually issued upon the conversion or exchange of
Convertible Securities, in each case provided such issuance is pursuant to the terms of such Option or Convertible Security;
| | ---- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (v) | Up to the First Carveout Limit, shares of Common Stock, Options or Convertible Securities issued to banks, equipment lessors or other financial institutions, or to real property
lessors, pursuant to a debt financing, equipment leasing or real property leasing transaction approved by the Board of Directors of the Corporation;
| | --- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (vi) | Up to the First Carveout Limit, shares of Common Stock, Options or Convertible Securities issued to suppliers or third party service providers in connection with the provision of
goods or services pursuant to transactions approved by the Board of Directors of the Corporation;
| | ---- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (vii) | Up to the Second Carveout Limit, shares of Common Stock, Options or Convertible Securities issued pursuant
| | ----- | ----------------------------------------------------------------------------------------------------------



11



---

| | to the acquisition of another corporation by the Corporation by merger, purchase of substantially all of the assets or other reorganization or to a joint
venture agreement, provided, that such issuances are approved by the Board of Directors of the Corporation; or
| | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (viii) | Up to the First Carveout Limit, shares of Common Stock, Options or Convertible Securities issued in connection with sponsored research, collaboration, technology license,
development, OEM, marketing or other similar agreements or strategic partnerships approved by the Board of Directors of the Corporation.
| | ------ | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

4.4.2 No Adjustment of Series C Conversion Price. No adjustment in the Series C Conversion Price shall be made as the result of the issuance or deemed issuance of Additional Shares of Common Stock if the
Corporation receives written notice from the holders of at least a majority of the then outstanding shares of Series C Preferred Stock agreeing that no such adjustment shall be made as the result of the issuance or deemed issuance of such Additional
Shares of Common Stock.

4.4.3Deemed Issue of Additional Shares of Common Stock.

(a) If the Corporation at any time or from time to time after the Series C Original Issue Date shall issue any Options or Convertible Securities
(excluding Options or Convertible Securities which are themselves Exempted Securities) or shall fix a record date for the determination of holders of any class of securities entitled to receive any such Options or Convertible Securities, then the
maximum number of shares of Common Stock (as set forth in the instrument relating thereto, assuming the satisfaction of any conditions to exercisability, convertibility or exchangeability but without regard to any provision contained therein for a
subsequent adjustment of such number) issuable upon the exercise of such Options or, in the case of Convertible Securities and Options therefor, the conversion or exchange of such Convertible Securities, shall be deemed to be Additional Shares of
Common Stock issued as of the time of such issue or, in case such a record date shall have been fixed, as of the close of business on such record date.

(b) If the terms of any Option or Convertible Security, the issuance of which resulted in an adjustment to the Series C Conversion Price pursuant to the terms of Subsection 4.4.4, are revised as a result of an
amendment to such terms or any other adjustment pursuant to the provisions of such Option or Convertible Security (but excluding automatic adjustments to such terms pursuant to anti-dilution or similar provisions of such Option or Convertible
Security) to provide for either (1) any increase or decrease in the number of shares of Common Stock issuable upon the exercise, conversion and/or exchange of any such Option or Convertible Security or (2) any increase or decrease in the
consideration payable to the Corporation upon such exercise, conversion and/or exchange, then, effective upon such increase or decrease becoming effective, the Series C Conversion Price computed upon the original issue of such Option or Convertible
Security (or upon the occurrence of a record date with respect thereto) shall be readjusted to such Series C Conversion Price as would have obtained had such revised terms been in effect upon the original date of issuance of such Option or
Convertible Security. Notwithstanding the foregoing, no readjustment pursuant to this clause (b) shall have the effect of increasing the Series C Conversion Price to an amount which exceeds the lower of (i) the Series C
Conversion Price in effect immediately prior to the original adjustment made as a result of the issuance of such Option or Convertible Security, or (ii) the Series C Conversion Price that would have resulted from any issuances of Additional
Shares of Common Stock (other than deemed issuances of Additional Shares



12



---

of Common Stock as a result of the issuance of such Option or Convertible Security) between the original adjustment date and such readjustment date.

(c) If the terms of any Option or Convertible Security (excluding Options or Convertible Securities which are themselves Exempted
Securities), the issuance of which did not result in an adjustment to the Series C Conversion Price pursuant to the terms of Subsection 4.4.4(either because the consideration per share (determined pursuant to Subsection 4.4.5) of the
Additional Shares of Common Stock subject thereto was equal to or greater than the Series C Conversion Price then in effect, or because such Option or Convertible Security was issued before the Series C Original Issue Date), are revised after the
Series C Original Issue Date as a result of an amendment to such terms or any other adjustment pursuant to the provisions of such Option or Convertible Security (but excluding automatic adjustments to such terms pursuant to anti-dilution or similar
provisions of such Option or Convertible Security) to provide for either (1) any increase in the number of shares of Common Stock issuable upon the exercise, conversion or exchange of any such Option or Convertible Security or (2) any
decrease in the consideration payable to the Corporation upon such exercise, conversion or exchange, then such Option or Convertible Security, as so amended or adjusted, and the Additional Shares of Common Stock subject thereto (determined in the
manner provided in Subsection 4.4.3(a)) shall be deemed to have been issued effective upon such increase or decrease becoming effective.

(d) Upon the expiration or termination of any unexercised Option or unconverted or unexchanged Convertible Security (or portion thereof) which resulted (either upon its original issuance or upon a revision of its terms) in an adjustment to
the Series C Conversion Price pursuant to the terms of Subsection 4.4.4, the Series C Conversion Price shall be readjusted to such Series C Conversion Price as would have obtained had such Option or Convertible Security (or portion thereof)
never been issued.

(e) If the number of shares of Common Stock issuable upon the exercise, conversion and/or exchange of any Option or
Convertible Security, or the consideration payable to the Corporation upon such exercise, conversion and/or exchange, is calculable at the time such Option or Convertible Security is issued or amended but is subject to adjustment based upon
subsequent events, any adjustment to the Series C Conversion Price provided for in this Subsection 4.4.3 shall be effected at the time of such issuance or amendment based on such number of shares or amount of consideration without regard to
any provisions for subsequent adjustments (and any subsequent adjustments shall be treated as provided in clauses (b) and (c) of this Subsection 4.4.3). If the number of shares of Common Stock issuable upon the exercise, conversion
and/or exchange of any Option or Convertible Security, or the consideration payable to the Corporation upon such exercise, conversion and/or exchange, cannot be calculated at all at the time such Option or Convertible Security is issued or amended,
any adjustment to the Series C Conversion Price that would result under the terms of this Subsection 4.4.3 at the time of such issuance or amendment shall instead be effected at the time such number of shares and/or amount of consideration is
first calculable (even if subject to subsequent adjustments), assuming for purposes of calculating such adjustment to the Series C Conversion Price that such issuance or amendment took place at the time such calculation can first be made.

4.4.4 Adjustment of Series C Conversion Price Upon Issuance of Additional Shares of Common Stock. In the event the
Corporation shall at any time after the Series C Original Issue Date issue Additional Shares of Common Stock (including Additional Shares of Common Stock deemed to be issued pursuant to Subsection 4.4.3), without consideration or for a
consideration per share less than the Series C Conversion Price in effect immediately prior to such issue, then the Series C Conversion Price shall be reduced, concurrently with such issue, to a price (calculated to the nearest one-hundredth of a
cent) determined in accordance with the following formula:



13



---

CP2= CP1* (A + B) ÷ (A + C).

For purposes of the foregoing formula, the following definitions shall apply:

(a) CP2 shall mean the Series C Conversion Price in effect immediately after such issue of Additional Shares of Common Stock

(b) CP1 shall mean the Series C Conversion Price in effect immediately prior to such issue of Additional Shares of Common Stock;

(c) A shall mean the number of shares of Common Stock outstanding immediately prior to such issue of Additional Shares of Common Stock (treating for this purpose as outstanding all shares of Common Stock issuable upon exercise
of Options outstanding immediately prior to such issue or upon conversion or exchange of Convertible Securities (including the Series C Preferred Stock) outstanding (assuming exercise of any outstanding Options therefor) immediately prior to such
issue);

(d) B shall mean the number of shares of Common Stock that
would have been issued if such Additional Shares of Common Stock had been issued at a price per share equal to CP1(determined by dividing the aggregate
consideration received by the Corporation in respect of such issue by CP1); and

(e) C shall mean the number of such Additional Shares of Common Stock issued in such transaction.

4.4.5 Determination of Consideration. For purposes of this Subsection 4.4, the consideration received by the Corporation for
the issue of any Additional Shares of Common Stock shall be computed as follows:

(a) Cash and Property: Such consideration shall:



| | (i) | insofar as it consists of cash, be computed at the aggregate amount of cash received by the Corporation, excluding amounts paid or payable for accrued interest;
| | --- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (ii) | insofar as it consists of property other than cash, be computed at the fair market value thereof at the time of such issue, as determined in good faith by the Board of Directors of
the Corporation; and
| | ---- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (iii) | in the event Additional Shares of Common Stock are issued together with other shares or securities or other assets of the Corporation for consideration which covers both, be the
proportion of such consideration so received, computed as provided in clauses (i) and (ii) above, as determined in good faith by the Board of Directors of the Corporation.
| | ----- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

(b) Options and Convertible Securities. The consideration per share received by the Corporation for Additional Shares of Common Stock deemed to
have been issued



14



---

pursuant to Subsection 4.4.3, relating to Options and Convertible Securities, shall be determined by dividing



| | (i) | the total amount, if any, received or receivable by the Corporation as consideration for the issue of such Options or Convertible Securities, plus the minimum aggregate amount of
additional consideration (as set forth in the instruments relating thereto, without regard to any provision contained therein for a subsequent adjustment of such consideration) payable to the Corporation upon the exercise of such Options or the
conversion or exchange of such Convertible Securities, or in the case of Options for Convertible Securities, the exercise of such Options for Convertible Securities and the conversion or exchange of such Convertible Securities, by
| | --- | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (ii) | the maximum number of shares of Common Stock (as set forth in the instruments relating thereto, without regard to any provision contained therein for a subsequent adjustment of such
number) issuable upon the exercise of such Options or the conversion or exchange of such Convertible Securities, or in the case of Options for Convertible Securities, the exercise of such Options for Convertible Securities and the conversion or
exchange of such Convertible Securities.
| | ---- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

4.4.6 Multiple Closing Dates. In the event the Corporation shall
issue on more than one date Additional Shares of Common Stock that are a part of one transaction or a series of related transactions and that would result in an adjustment to the Series C Conversion Price pursuant to the terms of Subsection 4.4.4then, upon the final such issuance, the Series C Conversion Price shall be readjusted to give effect to all such issuances as if they occurred on the date of the first such issuance (and without giving effect to any additional adjustments as a
result of any such subsequent issuances within such period).

4.5 Adjustment for Stock Splits and Combinations. If the Corporation
shall at any time or from time to time after the filing of this Amended and Restated Certificate of Incorporation with the Secretary of State of the State of Delaware (the Filing Date) effect a subdivision of the outstanding
Common Stock, the then current Series A Conversion Rate, Series B Conversion Rate and Series C Conversion Rate, as applicable, in effect immediately before that subdivision shall be proportionately increased. If the Corporation shall at any time or
from time to time after the Original Issue Date combine the outstanding shares of Common Stock, the Series A Conversion Rate, Series B Conversion Rate or Series C Conversion Rate, as applicable, in effect immediately before the combination
shall be proportionately decreased. Any adjustment under this subsection shall become effective at the close of business on the date the subdivision or combination becomes effective.

4.6 Adjustment for Certain Dividends and Distributions. In the event the Corporation at any time or from time to time after the Filing Date shall
make or issue, or fix a record date for the determination of holders of Common Stock entitled to receive, a dividend or other distribution payable on the Common Stock in additional shares of Common Stock or other securities or rights (hereinafter
referred to as Common Stock Equivalents) without payment of any consideration by such



15



---

holder for the additional shares of Common Stock or the Common Stock Equivalents (including the additional shares of Common Stock issuable upon conversion or
exercise thereof), then and in each such event the maximum number of shares (as a subsequent adjustment of such number) of Common Stock issuable in payment of such dividends or distribution or upon conversion or exercise of such Common Stock
Equivalents shall be deemed to be issued and outstanding as of the time of such issuance or, in the event such a record date shall have been fixed, as of the close of business on such record date. In addition, in each such event the Series A
Conversion Rate, Series B Conversion Rate or Series C Conversion Rate, as applicable, in effect immediately before such event shall be increased as of the time of such issuance or, in the event such a record date shall have been fixed, as of the
close of business on such record date, by multiplying the number of shares of Common Stock then issuable upon conversion of each share of Series A Preferred Stock, Series B Preferred Stock or Series C Preferred Stock, as applicable, by a fraction:



| | (1) | the numerator of which shall be the total number of shares of Common Stock issued and outstanding immediately or deemed to be issued and outstanding prior to the time of such
issuance or the close of business on such record date, plus the number of shares of Common Stock issuable in payment of such dividend or distribution or upon conversion or exercise of such Common Stock Equivalents; and
| | --- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------



| | (2) | the denominator of which shall be the total number of shares of Common Stock issued and outstanding or deemed to be issued and outstanding immediately prior to the time of such
issuance or the close of business on such record date plus the number of shares of Common Stock issuable in payment of such dividend or distribution.
| | --- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Notwithstanding the foregoing, (a) if such record date shall have been fixed and such dividend is not fully paid or if such distribution is not fully made on the date fixed therefor, the Series A Conversion Rate, Series B Conversion
Rate or Series C Conversion Rate, as applicable, shall be recomputed accordingly as of the close of business on such record date and thereafter the Series A Conversion Rate, Series B Conversion Rate or Series C Conversion Rate, as applicable, shall
be adjusted pursuant to this subsection as of the time of actual payment of such dividends or distributions; and (b) that no such adjustment shall be made if the holders of Preferred Stock simultaneously receive a dividend or other distribution
of shares of Common Stock in a number equal to the number of shares of Common Stock as they would have received if all outstanding shares of Preferred Stock had been converted into Common Stock on the date of such event.

4.7 Adjustments for Other Dividends and Distributions. In the event the Corporation at any time or from time to time after the Filing Date shall
make or issue, or fix a record date for the determination of holders of Common Stock entitled to receive, a dividend or other distribution payable in securities of the Corporation (other than a distribution of shares of Common Stock in respect of
outstanding shares of Common Stock) or in other property and the provisions of Section 1 do not apply to such dividend or distribution, then and in each such event the holders of Preferred Stock shall receive, simultaneously with the
distribution to the holders of Common Stock, a dividend or other distribution of such securities or other property in an amount equal to the amount of such securities or other property as they would have received if all outstanding shares of
Preferred Stock had been converted into Common Stock on the date of such event.



16



---

4.8 Adjustment for Merger or Reorganization, etc. Subject to the provisions of Subsection
2.3, if there shall occur any reorganization, recapitalization, reclassification, consolidation or merger (other than a change in par value, or from par value to no par value, or from no par value to par value, or as the result of subdivision,
combination, stock distribution or stock dividend) involving the Corporation in which the Common Stock (but not the Preferred Stock) is converted into or exchanged for securities, cash or other property (other than a transaction covered by
Subsections 4.6, or 4.7), then, following any such reorganization, recapitalization, reclassification, consolidation or merger, each share of Preferred Stock shall thereafter be convertible in lieu of the Common Stock into which it was
convertible prior to such event into the kind and amount of securities, cash or other property which a holder of the number of shares of Common Stock of the Corporation issuable upon conversion of one share of Preferred Stock immediately prior to
such reorganization, recapitalization, reclassification, consolidation or merger would have been entitled to receive pursuant to such transaction; and, in such case, appropriate adjustment (as determined in good faith by the Board of Directors of
the Corporation) shall be made in the application of the provisions in this Section 4 with respect to the rights and interests thereafter of the holders of the Preferred Stock, to the end that the provisions set forth in this
Section 4 (including provisions with respect to changes in and other adjustments of the Series A Conversion Rate, Series B Conversion Rate or Series C Conversion Rate, as applicable) shall thereafter be applicable, as nearly as reasonably may
be, in relation to any securities or other property thereafter deliverable upon the conversion of the Preferred Stock.

4.9 Certificate
as to Adjustments. Upon the occurrence of each adjustment or readjustment of the Series A Conversion Rate, Series B Conversion Rate or Series C Conversion Rate, as applicable, pursuant to this Section 4, the Corporation at its
expense shall, as promptly as reasonably practicable but in any event not later than 10 days thereafter, compute such adjustment or readjustment in accordance with the terms hereof and furnish to each holder of Preferred Stock a certificate of the
chief financial officer of the Corporation setting forth such adjustment or readjustment (including the kind and amount of securities, cash or other property into which the Preferred Stock is convertible) and showing in detail the facts upon which
such adjustment or readjustment is based. The Corporation shall, as promptly as reasonably practicable after the written request at any time of any holder of Preferred Stock (but in any event not later than 10 days thereafter), furnish or cause to
be furnished to such holder a certificate of the chief financial officer of the Corporation setting forth (i) the Series A Conversion Rate, Series B Conversion Rate or Series C Conversion Rate, as applicable, then in effect, and (ii) the
number of shares of Common Stock and the amount, if any, of other securities, cash or property which then would be received upon the conversion of Preferred Stock.

4.10 Notice of Record Date. In the event:

(a) the Corporation shall take a record of the holders of
its Common Stock (or other capital stock or securities at the time issuable upon conversion of the Preferred Stock) for the purpose of entitling or enabling them to receive any dividend or other distribution, or to receive any right to subscribe for
or purchase any shares of capital stock of any class or any other securities, or to receive any other security; or

(b) of any capital
reorganization of the Corporation, any reclassification of the Common Stock of the Corporation, or any Deemed Liquidation Event; or

(c)
of the voluntary or involuntary dissolution, liquidation or winding-up of the Corporation,

then, and in each such case, the Corporation will send or cause
to be sent to the holders of the Preferred Stock a notice specifying, as the case may be, (i) the record date for such dividend, distribution or right,



17



---

and the amount and character of such dividend, distribution or right, or (ii) the effective date on which such reorganization, reclassification,
consolidation, merger, transfer, dissolution, liquidation or winding up is proposed to take place, and the time, if any is to be fixed, as of which the holders of record of Common Stock (or such other capital stock or securities at the time issuable
upon the conversion of the Preferred Stock) shall be entitled to exchange their shares of Common Stock (or such other capital stock or securities) for securities or other property deliverable upon such reorganization, reclassification,
consolidation, merger, transfer, dissolution, liquidation or winding-up, and the amount per share and character of such exchange applicable to the Preferred Stock and the Common Stock. Such notice shall be sent at least 10 days prior to the record
date or effective date for the event specified in such notice.

5. Mandatory Conversion.

5.1 Trigger Events. Upon either (a) the closing of the sale of shares of Common Stock to the public at a price of at least $3.00 per share
(subject to appropriate adjustment in the event of any stock dividend, stock split, combination or other similar recapitalization with respect to the Common Stock) in a firm-commitment underwritten public offering pursuant to an effective
registration statement under the Securities Act of 1933, as amended (a Qualified IPO), or (b) the date and time, or the occurrence of an event, specified by vote or written consent of the holders of at least a majority of the
then outstanding shares of Preferred Stock, voting as a single class on an as-if-converted basis (the time of such closing or the date and time specified or the time of the event specified in such vote or written consent is referred to herein as the
Mandatory Conversion Time), then (i) all outstanding shares of Preferred Stock shall automatically be converted into shares of Common Stock, at the then effective conversion rate and (ii) such shares may not be reissued
by the Corporation.

5.2 Procedural Requirements. All holders of record of shares of Preferred Stock shall be sent written notice of
the Mandatory Conversion Time and the place designated for mandatory conversion of all such shares of Preferred Stock pursuant to this Section 5. Such notice need not be sent in advance of the occurrence of the Mandatory Conversion Time.
Upon receipt of such notice, each holder of shares of Preferred Stock shall surrender his, her or its certificate or certificates for all such shares (or, if such holder alleges that such certificate has been lost, stolen or destroyed, a lost
certificate affidavit and agreement reasonably acceptable to the Corporation to indemnify the Corporation against any claim that may be made against the Corporation on account of the alleged loss, theft or destruction of such certificate) to the
Corporation at the place designated in such notice, and shall thereafter receive certificates for the number of shares of Common Stock to which such holder is entitled pursuant to this Section 5. At the Mandatory Conversion Time, all
outstanding shares of Preferred Stock shall be deemed to have been converted into shares of Common Stock, which shall be deemed to be outstanding of record, and all rights with respect to the Preferred Stock so converted, including the rights, if
any, to receive notices and vote (other than as a holder of Common Stock), will terminate, except only the rights of the holders thereof, upon surrender of their certificate or certificates (or lost certificate affidavit and agreement) therefor, to
receive the items provided for in the last sentence of this Subsection 5.2. If so required by the Corporation, certificates surrendered for conversion shall be endorsed or accompanied by written instrument or instruments of transfer, in form
satisfactory to the Corporation, duly executed by the registered holder or by his, her or its attorney duly authorized in writing. As soon as practicable after the Mandatory Conversion Time and the surrender of the certificate or certificates (or
lost certificate affidavit and agreement) for Preferred Stock, the Corporation shall issue and deliver to such holder, or to his, her or its nominees, a certificate or certificates for the number of full shares of Common Stock issuable on such
conversion in accordance with the provisions hereof, together with cash as provided in Subsection 4.2 in lieu of any fraction of a share of Common Stock otherwise issuable upon such conversion and the payment of any declared but unpaid
dividends on the shares of Preferred Stock converted.



18



---

5.3 Effect of Mandatory Conversion. All shares of Preferred Stock shall, from and after the
Mandatory Conversion Time, no longer be deemed to be outstanding and, notwithstanding the failure of the holder or holders thereof to surrender the certificates for such shares on or prior to such time, all rights with respect to such shares shall
immediately cease and terminate at the Mandatory Conversion Time, except only the right of the holders thereof to receive shares of Common Stock in exchange therefor and to receive payment of any dividends declared but unpaid thereon. Such converted
Preferred Stock shall be retired and cancelled and may not be reissued as shares of such series, and the Corporation may thereafter take such appropriate action (without the need for stockholder action) as may be necessary to reduce the authorized
number of shares of Preferred Stock accordingly.

6. Redemption.

6.1 The Preferred Stock is not be redeemable, except in accordance with the Deemed Liquidation provisions of Subsection 2.4.2.

6.2 Redemption Notice. Promptly following receipt of a written request of the holders of at least a majority of the Series B Preferred Stock and
the holders of at least a majority of Series C Preferred Stock (each voting as a separate series on an as-if-converted basis) pursuant to Section 2.4.2, the Corporation shall deliver written notice of the redemption (the
Redemption Notice) to each holder of record of Series B Preferred Stock and Series C Preferred Stock. The Redemption Notice shall state:

(a) the number of shares of Series B Preferred Stock and Series C Preferred Stock held by such holder that the Corporation shall redeem on the Liquidation Redemption Date specified in the Redemption Notice;

(b) the Liquidation Redemption Date;

(c) the date upon which such holders right to convert such shares terminates (as determined in accordance with Subsection 4.1); and

(d) that such holder is to surrender to the Corporation, in the manner and at the place designated, his, her or its certificate or certificates
representing the shares of Series B Preferred Stock and Series C Preferred Stock to be redeemed.

6.3 Surrender of Certificates;
Payment. On or before the Liquidation Redemption Date, each holder of shares of Series B Preferred Stock and Series C Preferred Stock to be redeemed on such Liquidation Redemption Date, unless such holder has exercised his, her or its right to
convert such shares as provided in Section 4, shall surrender the certificate or certificates representing such shares (or, if such registered holder alleges that such certificate has been lost, stolen or destroyed, a lost certificate
affidavit and agreement reasonably acceptable to the Corporation to indemnify the Corporation against any claim that may be made against the Corporation on account of the alleged loss, theft or destruction of such certificate) to the Corporation, in
the manner and at the place designated in the Redemption Notice, and thereupon the Series B Liquidation Amount and the Series C Liquidation Amount, as applicable, for such shares shall be payable to the order of the person whose name appears on such
certificate or certificates as the owner thereof. In the event less than all of the shares of Series B Preferred Stock and Series C Preferred Stock represented by a certificate are redeemed, a new certificate representing the unredeemed shares of
Series B Preferred Stock and Series C Preferred Stock, as applicable, shall promptly be issued to such holder.



19



---

6.4 Rights Subsequent to Redemption. If the Redemption Notice shall have been duly given, and if
on the Liquidation Redemption Date the applicable Liquidation Amount payable upon redemption of the shares of Series B Preferred Stock and Series C Preferred Stock to be redeemed on such Liquidation Redemption Date is paid or tendered for payment or
deposited with an independent payment agent so as to be available therefor, then notwithstanding that the certificates evidencing any of the shares of Series B Preferred Stock and Series C Preferred Stock so called for redemption shall not have been
surrendered, dividends with respect to such shares of Series B Preferred Stock and Series C Preferred Stock shall cease to accrue after such Liquidation Redemption Date and all rights with respect to such shares shall forthwith after the Liquidation
Redemption Date terminate, except only the right of the holders to receive the Series B Liquidation Amount and the Series C Liquidation Amount, as applicable, without interest upon surrender of their certificate or certificates therefor.

7. Redeemed or Otherwise Acquired Shares. Any shares of Preferred Stock which are redeemed or otherwise acquired by the Corporation or any of
its subsidiaries shall be automatically and immediately cancelled and retired and shall not be reissued, sold or transferred. Neither the Corporation nor any of its subsidiaries may exercise any voting or other rights granted to the holders of
Preferred Stock following redemption.

8. Waiver. Any of the rights, powers, preferences and other terms of the Preferred Stock set
forth herein may be waived on behalf of all holders of Preferred Stock by the affirmative written consent or vote of the holders of at least a majority of the shares of Preferred Stock then outstanding.

9. Notices. Any notice required or permitted by the provisions of this Article Fourth to be given to a holder of shares of Preferred Stock shall
be mailed, postage prepaid, to the post office address last shown on the records of the Corporation, or given by electronic communication in compliance with the provisions of the General Corporation Law, and shall be deemed sent upon such mailing or
electronic transmission.

FIFTH: Subject to any additional vote required by the Certificate of Incorporation, in furtherance and not
in limitation of the powers conferred by statute, the Board of Directors is expressly authorized to make, repeal, alter, amend and rescind any or all of the Bylaws of the Corporation.

SIXTH: Subject to any additional vote required by the Certificate of Incorporation, the number of directors of the Corporation shall be determined
in the manner set forth in the Bylaws of the Corporation.

SEVENTH: Elections of directors need not be by written ballot unless the
Bylaws of the Corporation shall so provide.

EIGHTH: Meetings of stockholders may be held within or without the State of Delaware,
as the Bylaws of the Corporation may provide. The books of the Corporation may be kept outside the State of Delaware at such place or places as may be designated from time to time by the Board of Directors or in the Bylaws of the Corporation.

NINTH: To the fullest extent permitted by law, a director of the Corporation shall not be personally liable to the Corporation or
its stockholders for monetary damages for breach of fiduciary duty as a director. If the General Corporation Law or any other law of the State of Delaware is amended after approval by the stockholders of this Article Ninth to authorize corporate
action further eliminating or limiting the personal liability of directors, then the liability of a director of the Corporation shall be eliminated or limited to the fullest extent permitted by the General Corporation Law as so amended.



20



---

Any repeal or modification of the foregoing provisions of this Article Ninth by the stockholders of the
Corporation shall not adversely affect any right or protection of a director of the Corporation existing at the time of, or increase the liability of any director of the Corporation with respect to any acts or omissions of such director occurring
prior to, such repeal or modification.

TENTH: The following indemnification provisions shall apply to the persons enumerated below.

1. Right to Indemnification of Directors and Officers. The Corporation shall indemnify and hold harmless, to the fullest extent
permitted by applicable law as it presently exists or may hereafter be amended, any person (an Indemnified Person) who was or is made or is threatened to be made a party or is otherwise involved in any action, suit or proceeding,
whether civil, criminal, administrative or investigative (a Proceeding), by reason of the fact that such person, or a person for whom such person is the legal representative, is or was a director or officer of the Corporation or,
while a director or officer of the Corporation, is or was serving at the request of the Corporation as a director, officer, employee or agent of another Corporation or of a partnership, joint venture, limited liability company, trust, enterprise or
nonprofit entity, including service with respect to employee benefit plans, against all liability and loss suffered and expenses (including attorneys fees) reasonably incurred by such Indemnified Person in such Proceeding. Notwithstanding the
preceding sentence, except as otherwise provided in Section 3 of this Article Tenth, the Corporation shall be required to indemnify an Indemnified Person in connection with a Proceeding (or part thereof) commenced by such Indemnified Person
only if the commencement of such Proceeding (or part thereof) by the Indemnified Person was authorized in advance by the Board of Directors.

2. Prepayment of Expenses of Directors and Officers. The Corporation shall pay the expenses (including attorneys fees) incurred by an Indemnified Person in defending any Proceeding in advance of its final disposition,
provided, however, that, to the extent required by law, such payment of expenses in advance of the final disposition of the Proceeding shall be made only upon receipt of an undertaking by the Indemnified Person to repay all amounts
advanced if it should be ultimately determined that the Indemnified Person is not entitled to be indemnified under this Article Tenth or otherwise.

3. Claims by Directors and Officers. If a claim for indemnification or advancement of expenses under this Article Tenth is not paid in full within 30 days after a written claim therefor by the Indemnified Person has been received by
the Corporation, the Indemnified Person may file suit to recover the unpaid amount of such claim and, if successful in whole or in part, shall be entitled to be paid the expense of prosecuting such claim. In any such action the Corporation shall
have the burden of proving that the Indemnified Person is not entitled to the requested indemnification or advancement of expenses under applicable law.

4. Indemnification of Employees and Agents. The Corporation may indemnify and advance expenses to any person who was or is made or is threatened to be made or is otherwise involved in any Proceeding by reason
of the fact that such person, or a person for whom such person is the legal representative, is or was an employee or agent of the Corporation or, while an employee or agent of the Corporation, is or was serving at the request of the Corporation as a
director, officer, employee or agent of another corporation or of a partnership, joint venture, limited liability company, trust, enterprise or nonprofit entity, including service with respect to employee benefit plans, against all liability and
loss suffered and expenses (including attorneys fees) reasonably incurred by such person in connection with such Proceeding. The ultimate determination of entitlement to indemnification of persons who are non-director or officer employees or
agents shall be made in such manner as is determined by the Board of Directors in its sole discretion. Notwithstanding the foregoing sentence, the Corporation shall not be



21



---

required to indemnify a person in connection with a Proceeding initiated by such person if the Proceeding was not authorized in advance by the Board of
Directors.

5. Advancement of Expenses of Employees and Agents. The Corporation may pay the expenses (including attorneys
fees) incurred by an employee or agent in defending any Proceeding in advance of its final disposition on such terms and conditions as may be determined by the Board of Directors.

6. Non-Exclusivity of Rights. The rights conferred on any person by this Article Tenth shall not be exclusive of any other rights which such
person may have or hereafter acquire under any statute, provision of the certificate of incorporation, these by-laws, agreement, vote of stockholders or disinterested directors or otherwise.

7. Other Indemnification. The Corporations obligation, if any, to indemnify any person who was or is serving at its request as a director,
officer or employee of another Corporation, partnership, limited liability company, joint venture, trust, organization or other enterprise shall be reduced by any amount such person may collect as indemnification from such other Corporation,
partnership, limited liability company, joint venture, trust, organization or other enterprise.

8. Insurance. The Board of
Directors may, to the full extent permitted by applicable law as it presently exists, or may hereafter be amended from time to time, authorize an appropriate officer or officers to purchase and maintain at the Corporations expense insurance:
(a) to indemnify the Corporation for any obligation which it incurs as a result of the indemnification of directors, officers and employees under the provisions of this Article Tenth; and (b) to indemnify or insure directors, officers and
employees against liability in instances in which they may not otherwise be indemnified by the Corporation under the provisions of this Article Tenth.

9. Amendment or Repeal. Any repeal or modification of the foregoing provisions of this Article Tenth shall not adversely affect any right or protection hereunder of any person in respect of any act or omission
occurring prior to the time of such repeal or modification. The rights provided hereunder shall inure to the benefit of any Indemnified Person and such persons heirs, executors and administrators.

ELEVENTH: The Corporation renounces any interest or expectancy of the Corporation in, or in being offered an opportunity to participate in, any
Excluded Opportunity. An Excluded Opportunity is any matter, transaction or interest that is presented to, or acquired, created or developed by, or which otherwise comes into the possession of, (i) any director of the
Corporation who is not an employee of the Corporation or any of its subsidiaries, or (ii) any holder of Series A Preferred Stock or Series B Preferred Stock or any partner, member, director, stockholder, employee or agent of any such holder,
other than someone who is an employee of the Corporation or any of its subsidiaries (collectively, Covered Persons), unless such matter, transaction or interest is presented to, or acquired, created or developed by, or otherwise
comes into the possession of, a Covered Person expressly and solely in such Covered Persons capacity as a director of the Corporation.

*        *        *

3. That the foregoing
amendment and restatement was approved by the holders of the requisite number of shares of this corporation in accordance with Section 228 of the General Corporation Law.



22



---

4. That this Amended and Restated Certificate of Incorporation, which restates and integrates and further
amends the provisions of this corporations Certificate of Incorporation, has been duly adopted in accordance with Sections 242 and 245 of the General Corporation Law.



23



---

IN WITNESS WHEREOF, this Amended and Restated Certificate of Incorporation has been executed by a
duly authorized officer of this corporation on this  of October 2007.



By:Arthur L. SwiftChief Executive Officer and President




---

Exhibit D

Form of

Amended and Restated Voting Agreement



---

AMENDED AND RESTATED VOTING AGREEMENT

This Amended and Restated Voting Agreement (the Agreement) is made and entered into as of October [],
2007, by and among Unidym, Inc., a Delaware corporation (the Company), the stockholders of the Company listed on Schedule A hereto (such stockholders, together with (i) any subsequent stockholders or option
holders who become parties hereto (other than as Investors), and (ii) any transferees who become subject to the provisions hereof pursuant to Section 5.1, the Key Holders) and each of the investors listed on
Schedule B hereto (each of which is referred to in this Agreement as an Investor and together collectively with the Key Holders, the Stockholders). The Company, the Key Holders and the Investor are
individually referred to herein as Party and are collectively referred to herein as the Parties. Capitalized terms not otherwise defined herein shall have the meaning so ascribed in the Merger Agreement.

RECITALS

WHEREAS, the Company, Arrowhead Research Corporation (Arrowhead) and certain Key Holders are parties to an Amended and Restated Voting Agreement dated as of April 20, 2007 (the Prior
Agreement);

WHEREAS, certain new investors (the Series C Investors) have agreed to purchase
shares of the Companys Series C Preferred Stock (the Series C Stock) pursuant to a certain Series C Preferred Stock Subscription Agreement between the Company and each such Series C Investor dated of even date
herewith or hereafter (each a Series C Agreement), and the Series C Agreement provides that, as a condition to the Series C Investors purchase of Series C Stock thereunder, the Company will enter into
this Agreement and the Series C Investor will be granted the rights set forth herein;

WHEREAS, the Company and the parties to
the Prior Agreement desire to enter into this Agreement in order to amend, restate and replace their rights and obligations under the Prior Agreement with the rights and obligations set forth in this Agreement, and Section 5.6 of the Prior
Agreement provides that the Prior Agreement may be amended by the written consent of (i) the Key Holders holding greater than fifty percent (50%) of the Series A Preferred Stock and fifty percent (50%) of the Shares then held by all
of the Key Holders and (ii) the holders of greater than fifty percent (50%) of the Shares then held by the Investors (voting as a single class);

WHEREAS, the parties to this Agreement have reached certain agreements and understandings with respect to the constituency of the Board of Directors of the Company (the Board) and certain
other matters; and

WHEREAS, the undersigned Key Holders to this Agreement hold a majority of the Series A Preferred Stock and a
majority of the Shares then held by all of the Key Holders and the undersigned Investors hold a majority of the Shares then held by the Investors (voting as a single class).

NOW, THEREFORE, in consideration of the foregoing and the mutual promises and agreements contained herein, the sufficiency of which is hereby
acknowledged, all Parties hereto agree as follows:

1. Voting Agreement.

1.1 Board Composition. Each Stockholder agrees to vote all of his, her or its shares of voting securities in the Company, whether now owned or
hereafter acquired or which such



---

Stockholder may be empowered to vote (together the Shares), from time to time and at all times, in whatever manner shall be necessary to
ensure that at each annual or special meeting of stockholders at which an election of directors is held or pursuant to any written consent of the stockholders, the following persons shall be elected to the Board:

(i) Arrowhead Directors. Arrowhead shall be entitled to designate three (3) directors (the Arrowhead Directors), who shall
initially be R. Bruce Stewart, Edward W. Frykman and Arthur L. Swift, unless any or all of them shall elect not to stand for election, or in the event of a vacancy created by the resignation, removal (in accordance with Section 1.3
below) or death of one or all of them, in which case Arrowhead may designate any qualifying person to serve in his or their place;

(ii)
CNI Directors. The holders of a majority of the shares of Series A Preferred Stock, voting separately as a single class, shall be entitled to designate two (2) directors (the CNI Directors), who shall initially be
Bob Gower and Ray McLaughlin, unless either or both of them shall elect not to stand for election, or in the event of a vacancy created by the resignation, removal (in accordance with Section 1.3 below) or death of either or both of
them, in which case the holders of a majority of the shares of Series A Preferred Stock may designate any qualifying person to serve in his or their place;

(iii) Series C Director. The holders of a majority of the shares of Series C Preferred Stock, voting separately as a single class, shall be entitled to designate one (1) director (the Series C
Director), who shall initially be Charles P. McKenney, unless he shall elect not to stand for election, or in the event of a vacancy created by his resignation, removal (in accordance with Section 1.3 below) or death, in which
case the holders of a majority of the shares of Series C Preferred Stock may designate any qualifying person to serve in his place; and

(iv) Common Director. The holders of a majority of the Common Stock, voting separately as a single class, shall be entitled to designate one (1) director (the Common Director), who shall initially be George
Gruner. If, for any reason, George Gruner shall be unable to serve on the Board, then each of the Stockholders shall promptly vote their respective Shares (i) to remove him from the Board if he has not resigned from such position and
(ii) to elect the Chief Executive Officer of the Company (or, if there is no Chief Executive Officer designated, the President of the Company) as the new Common Director.

1.2 Size of the Board. Each Stockholder agrees to vote all of his, her or its Shares from time to time and at all times, in whatever manner shall
be necessary to ensure that the size of the Board shall be set and remain at seven (7) directors.

1.3 Removal of Board
Members. Each Stockholder also agrees to vote all of his, her or its Shares from time to time and at all times in whatever manner as shall be necessary to ensure that (i) no director elected pursuant to Section 1.1 of this
Agreement may be removed from office other than for cause unless (A) such removal is directed or approved by the affirmative vote of the holders of the shares of stock entitled under Section 1.1 to designate that director or
(B) the person(s) or entity(ies) originally entitled to designate or approve such director pursuant to Section 1.1 are no longer so entitled to designate or approve such director; and (ii) any vacancies created by the
resignation, removal or death of a director elected pursuant to Section 1.1 shall be filled pursuant to the provisions of Section 1.1. All Stockholders agree to execute any written consents required to effectuate the
obligations of this Agreement, and the Company agrees at the request of any Party entitled to designate directors to call a special meeting of stockholders for the purpose of electing directors. So long as the stockholders of the Company are
entitled to cumulative voting, if less than the entire Board is to be removed, no director



2



---

may be removed without cause if the votes cast against his or her removal would be sufficient to elect such director if then cumulatively voted at an
election of the entire board of directors.

1.4 Committees. The Board shall establish (a) an executive search committee, which
shall be comprised of both Bruce Stewart and Raymond McLaughlin, or any Board successor to either individual (which shall be responsible for conducting a search for a chief executive officer of the Company), (b) a budget committee, which shall
be comprised of both Bruce Stewart and Raymond McLaughlin, or any Board successor to either individual (which shall be responsible for reviewing and commenting on the Companys overall budget and any specific strategic initiatives for the
Company), and (c) such other committees as the Board shall deem necessary or convenient from time to time. Except to the extent otherwise required by applicable law or regulation, one (1) CNI Director and one (1) Series C Director
shall be entitled to be a member of the budget committee and any compensation committee and of any audit committee that may be established by the Board.

1.5 Board Composition Before Filing of Registration Statement. Each Stockholder agrees to vote all of his, her or its Shares, in whatever manner shall be necessary to ensure that immediately prior to the filing
of a registration statement under the Securities Act of 1933, as amended (the Securities Act), a majority of the Board shall be independent directors, two (2) of whom shall be designated by Arrowhead and two (2) of whom
shall be designated by the holders of the Series A Preferred Stock.

2. Term. This Agreement shall be effective as of the date
hereof and shall continue in effect until and shall terminate (i) immediately prior to the consummation of the sale of shares of Common Stock to the public in a firm-commitment underwritten public offering pursuant to an effective registration
statement under the Securities Act, provided that the price per share to the public is at least $3.00 per share (subject to appropriate adjustment in the event of any stock dividend, stock split, combination or other similar recapitalization with
respect to the Common Stock); (ii) when the Company first becomes subject to the periodic reporting requirements of Sections 12(g) or 15(d) of the Exchange Act or (iii) upon a Deemed Liquidation Event (as defined below), whichever event
shall first occur. A Deemed Liquidation Event shall have the meaning ascribed to such term in the Companys Amended and Restated Certificate of Incorporation, as it may be amended from time to time.

3. Specific Enforcement. Each Party acknowledges and agrees that each Party hereto will be irreparably damaged in the event any of the provisions
of this Agreement are not performed by the Parties in accordance with their specific terms or are otherwise breached. Accordingly, it is agreed that each of the Company and the Stockholders shall be entitled to an injunction to prevent breaches of
this Agreement and to specific enforcement of this Agreement and its terms and provisions in any action instituted in any court of the United States or any state having subject matter jurisdiction, in addition to any other remedy to which the
Parties may be entitled at law or in equity. Each of the Parties to this Agreement hereby consents to personal jurisdiction in any such action brought in the United States District Court for the Central District of California or in any court of the
State of California having subject matter jurisdiction.

4. CNI Intellectual Property and Technology. Until earlier of
(i) April 20, 2012 and (ii) a Deemed Liquidation Event, in the event Arrowhead or a subsidiary of Arrowhead other than the Company wishes to negotiate to license intellectual property or technology that is an asset of
the Company or Unidym Acquisition, LLC, such license negotiation shall be conducted on market terms and, to the extent possible, at arms-length, and any resulting license agreement shall be subject to approval by the Board; provided,
however, if directors elected by the holders of shares of Series A Preferred Stock pursuant to the terms of this Agreement constitute less than fifty percent (50%) of the Board, then a majority of the directors appointed pursuant to
Sections 1.1(ii), (iii) and (iv) of this Agreement shall be



3



---

required to approve any resulting license agreement; provided, further, for the purposes of this Section 4, subsidiary of
Arrowhead includes all entities that are subsidiaries of Arrowhead either (x) as of April 20, 2007 or (y) until the earlier of (i) April 20, 2007 or (ii) a Deemed Liquidation Event.

5. Miscellaneous.

5.1 Transfers,
Successors and Assigns. (i) The terms and conditions of this Agreement shall inure to the benefit of and be binding upon the respective successors and assigns of the parties. Nothing in this Agreement, express or implied, is intended to confer
upon any Party, other than the Parties hereto or their respective successors and assigns, any rights, remedies, obligations, or liabilities under or by reason of this Agreement, except as expressly provided in this Agreement.

(ii) Each transferee or assignee of the Shares subject to this Agreement shall continue to be subject to the terms hereof, and, as a condition to the
Companys recognizing such transfer, each transferee or assignee shall agree in writing to be subject to each of the terms of this Agreement by executing and delivering an Adoption Agreement substantially in the form attached hereto as
Exhibit A. Upon the execution and delivery of an Adoption Agreement by any transferee, such transferee shall be deemed to be a Party hereto as if such transferees signature appeared on the signature pages of this Agreement. By execution
of this Agreement or of any Adoption Agreement, each of the Parties appoints the Company as its attorney in fact for the purpose of executing any Adoption Agreement that may be required to be delivered under the terms of this Agreement. The Company
shall not permit the transfer of the Shares subject to this Agreement on its books or issue a new certificate representing any such Shares unless and until such transferee shall have complied with the terms of this Section 5.1. Each
certificate representing the Shares subject to this Agreement if issued on or after the date of this Agreement shall be endorsed by the Company with the legend set forth in Section 5.10. Nothing in this Agreement, express or implied, is
intended to confer upon any Party other than the Parties or their respective executors, administrators, heirs, successors and assigns any rights, remedies, obligations, or liabilities under or by reason of this Agreement, except as expressly
provided in this Agreement.

5.2 Governing Law. This Agreement shall be governed by and construed in accordance with the General
Corporation Law of the State of Delaware as to matters within the scope thereof, without regard to its principles of conflicts of laws.

5.3 Counterparts. This Agreement may be executed in two or more counterparts, each of which shall be deemed an original, but all of which together shall constitute one and the same instrument. This Agreement may also be executed and
delivered by facsimile signature and in two or more counterparts, each of which shall be deemed an original, but all of which together shall constitute one and the same instrument.

5.4 Titles and Subtitles. The titles and subtitles used in this Agreement are used for convenience only and are not to be considered in
construing or interpreting this Agreement.

Notices. All notices and other communications given or made pursuant to this
Agreement shall be in writing and shall be deemed effectively given: (a) upon personal delivery to the Party to be notified, (b) when sent by confirmed electronic mail or facsimile if sent during normal business hours of the recipient, and
if not so confirmed, then on the next business day, (c) five (5) days after having been sent by registered or certified mail, return receipt requested, postage prepaid, or (d) one (1) day after deposit with a nationally
recognized overnight courier, specifying next day delivery, with written verification of receipt. All communications shall be sent to the respective Parties at their address as set forth on the signature page or Schedule A or Schedule
B hereto, or to such email address, facsimile number or address as subsequently modified by written notice given in accordance with this Section 5.5.



4



---

5.6 Amendment. This Agreement may be amended or modified and the observance of any term hereof
may be waived (either generally or in a particular instance and either retroactively or prospectively) only by a written instrument executed by (i) the Key Holders holding greater than fifty percent (50%) of the Series A Preferred Stock
and fifty (50%) percent (50%) of the Shares then held by all of the Key Holders (voting together as a single class and on an as-converted basis) and (ii) the holders of greater than fifty percent (50%) of the Shares then held by
the Investors (voting as a single class and on an as-converted basis). Any amendment or waiver so effected shall be binding upon the Company, the Investor, the Key Holders and all of their respective successors and permitted assigns whether or not
such party, assignee or other shareholder entered into or approved such amendment or waiver. Notwithstanding the foregoing, (a) this Agreement may not be amended or terminated and the observance of any term of this Agreement may not be waived
with respect to any Investor without the written consent of such Investor unless such amendment, termination or waiver applies to all Investor or Key Holders, as the case may be, in the same fashion, and (b) the consent of the Key Holders shall
not be required for any amendment or waiver if such amendment or waiver does not apply to the Key Holders. The Company shall give prompt written notice of any amendment or termination of this Agreement or waiver hereunder to any Party that did not
consent in writing to such amendment, termination or waiver. No waivers of or exceptions to any term, condition or provision of this Agreement, in any one or more instances, shall be deemed to be, or construed as, a further or continuing waiver of
any such term, condition or provision. Any party may agree to waive or amend its own rights hereunder with respect to the Company or another party without the necessity of obtaining the consent or agreement of any other party.

5.7 Severability. The invalidity or unenforceability of any provision hereof shall in no way affect the validity or enforceability of any other
provision.

5.8 Delays or Omissions. No delay or omission to exercise any right, power or remedy accruing to any party under this
Agreement, upon any breach or default of any other party under this Agreement, shall impair any such right, power or remedy of such non-breaching or non-defaulting party nor shall it be construed to be a waiver of any such breach or default, or an
acquiescence therein, or of or in any similar breach or default thereafter occurring; nor shall any waiver of any single breach or default be deemed a waiver of any other breach or default theretofore or thereafter occurring. All remedies, either
under this Agreement or by law or otherwise afforded to any party, shall be cumulative and not alternative.

5.9 Entire Agreement.
This Agreement (including the Schedules and Exhibits hereto) and the Companys Amended and Restated Certificate of Incorporation as the same may be further amended after the date hereof constitute the full and entire understanding and agreement
between the parties with respect to the subject matter hereof, and any other prior written or oral agreements, or contemporaneous oral agreements, relating to the subject matter hereof existing between the parties are expressly canceled.

5.10 Legend on Share Certificates. Each certificate representing any Shares shall be endorsed by the Company with a legend reading
substantially as follows:

THE SHARES EVIDENCED HEREBY ARE SUBJECT TO AN AMENDED AND RESTATED VOTING AGREEMENT (A COPY OF WHICH MAY BE
OBTAINED UPON WRITTEN REQUEST FROM THE COMPANY), AND BY ACCEPTING ANY INTEREST IN SUCH SHARES THE PERSON ACCEPTING SUCH INTEREST SHALL BE DEEMED TO AGREE TO AND SHALL BECOME BOUND BY ALL THE PROVISIONS OF THAT VOTING AGREEMENT, INCLUDING



5



---

CERTAIN RESTRICTIONS ON TRANSFER AND OWNERSHIP SET FORTH THEREIN.

5.11 Execution by the Company. The Company, by its execution in the space provided below, agrees that it will cause the certificates evidencing the shares of Common Stock and Preferred Stock to bear the legend
required by Section 5.10 of this Agreement, and it shall supply, free of charge, a copy of this Agreement to any holder of a certificate evidencing shares of capital stock of the Company upon written request from such holder to the
Company at its principal office. The Parties to this Agreement do hereby agree that the failure to cause the certificates evidencing the shares of Common Stock and Preferred Stock to bear the legend required by Section 5.10 herein and
the failure of the Company to supply, free of charge, a copy of this Agreement as provided under this Section 5.11 shall not affect the validity or enforcement of this Agreement.

5.12 Stock Splits, Stock Dividends, etc. In the event of any issuance of any of the Companys voting securities hereafter to any of the
Stockholders (including, without limitation, in connection with any stock split, stock dividend, recapitalization, reorganization, or the like), such voting securities shall become subject to this Agreement and deemed to be Shares
hereunder and shall be endorsed with the legend set forth in Section 5.10.

5.13 Covenants of the Company. The Company
agrees to use its best efforts to ensure that the rights granted under this Agreement are effective and that the Parties enjoy the benefits of this Agreement. Such actions include, without limitation, the use of the Companys best efforts to
cause the nomination and election of the directors as provided above. The Company will not, by any voluntary action, avoid or seek to avoid the observance or performance of any of the terms to be performed hereunder by the Company, but will at all
times in good faith assist in the carrying out of all of the provisions of this Agreement and in the taking of all such actions as may be necessary, appropriate or reasonably requested by the holders of a majority of the outstanding voting
securities held by the Stockholders (assuming conversion of all outstanding convertible securities) in order to protect the rights of the Stockholders against impairment.

5.14 Manner of Voting; Grant of Proxy. The voting of Shares pursuant to this Agreement may be effected in person, by proxy, by written consent or
in any other manner permitted by applicable law. Each Party hereby grants to the Secretary of the Company, in the event that such Party or Parties fail to vote their Shares as required by this Agreement, a proxy coupled with an interest in all
Shares, whether held by an Investor or a Key Holder, beneficially owned by such Party, which proxy is irrevocable until this Agreement terminates pursuant to its terms or this Section 5.14 is amended to remove such grant of proxy in
accordance with Section 5.6 of this Agreement.

5.15 Additional Investors. Notwithstanding anything to the contrary
contained herein, if the Company issues additional shares of the Companys Series C Preferred Stock after the date hereof pursuant to a Series C Agreement, the Company shall cause any purchaser of such shares of Series C Preferred Stock to
execute a counterpart signature page hereto as an Investor, and such party shall thereby be bound by, and subject to, all the terms and provisions of this Agreement applicable to an Investor.

5.16 Costs of Enforcement. If any Party to this Agreement seeks to enforce its rights under this Agreement by legal proceedings, the
non-prevailing Party shall pay all costs and expenses incurred by the prevailing Party, including, without limitation, all reasonable attorneys fees.

5.17 Additional Key Holders. In the event that after the date of this Agreement, the Company issues shares of capital stock to any employee, which shares constitute one



6



---

percent (1%) or more of the Companys then outstanding capital stock (treating for this purpose all shares of Common Stock issuable upon exercise
of or conversion of outstanding options, warrants or convertible securities, as if exercised or converted), the Company shall cause such person to execute a counterpart signature page hereto as a Key Holder, and such person shall thereby be bound
by, and subject to, all the terms and provisions of this Agreement applicable to a Key Holder.

5.18 Spousal Consent. If any Key
Holder is married on the date of this Agreement, such Key Holders spouse shall execute and deliver to the Company a consent of spouse in the form of Exhibit B hereto (Consent of Spouse), effective on the date hereof.
Notwithstanding the execution and delivery thereof, such consent shall not be deemed to confer or convey to the spouse any rights in such Key Holders shares of capital stock that do not otherwise exist by operation of law or the agreement of
the parties. If any Key Holder should marry or remarry subsequent to the date of this Agreement, such Key Holder shall within thirty (30) days thereafter obtain his/her new spouses acknowledgement of and consent to the existence and
binding effect of all restrictions contained in this Agreement by causing such spouse to execute and deliver a Consent of Spouse acknowledging the restrictions and obligations contained in this Agreement and agreeing and consenting to the same.

5.19 Prior Agreement Superseded. Pursuant to Section 5.6 of the Prior Agreement, the undersigned parties who are parties to
such Prior Agreement hereby amend and restate the Prior Agreement to read in its entirety as set forth in this Agreement, all with the intent and effect that the Prior Agreement shall hereby be terminated and entirely replaced and superseded by this
Agreement.

[SIGNATURE PAGES FOLLOW]



7



---

IN WITNESS WHEREOF, the parties have executed this Amended and Restated Voting Agreement on the
day and year first indicated above.



COMPANY:UNIDYM, INC. a Delaware
corporationBy:Name:

Arthur L. SwiftTitle:

Chief Executive OfficerAddress:

1430 OBrien Drive, Suite G Menlo Park, CA 94025




---

IN WITNESS WHEREOF, the parties have executed this Amended and Restated Voting Agreement as of the date
first above written.



INVESTORS:ARROWHEAD RESEARCH CORPORATION a Delaware
corporationBy:Name:

R. Bruce StewartTitle:

Chief Executive OfficerAddress:

201 South Lake Avenue, Suite 703 Pasadena, CA
91101-3074




---

IN WITNESS WHEREOF, the parties have executed this Amended and Restated Voting Agreement as of the date
first above written.



INVESTORS:Name:(Print Name of Investor)By:(Print name of signatory, if signing on behalf of entity)Title:(Print title of signatory, if signing on behalf of an entity)Signature:




---

SCHEDULE A

KEY HOLDERS

[List of Key Holders]



---

SCHEDULE B

INVESTORS

Arrowhead Research Corporation

201 South Lake Avenue, Suite 703

Pasadena, CA 91101

[Additional Investors]

[Additional Series C Investors]



---

EXHIBIT A

ADOPTION AGREEMENT

This Adoption Agreement (Adoption Agreement) is executed by
the undersigned (the Transferee) pursuant to the terms of that certain Amended and Restated Voting Agreement dated as of October [], 2007 (the Agreement), by and among the Company
and certain of its Stockholders. Capitalized terms used but not defined in this Adoption Agreement shall have the respective meanings ascribed to such terms in the Agreement. By the execution of this Adoption Agreement, the Transferee agrees as
follows:

1.1 Acknowledgement. Transferee acknowledges that Transferee is acquiring certain shares of the capital stock of the
Company (the Stock), subject to the terms and conditions of the Agreement.

1.2 Agreement. Transferee
(i) agrees that the Stock acquired by Transferee shall be bound by and subject to the terms of the Agreement, and (ii) hereby adopts the Agreement with the same force and effect as if Transferee were originally a Party thereto.

1.3 Notice. Any notice required or permitted by the Agreement shall be given to Transferee at the address listed beside Transferees
signature below.

EXECUTED AND DATED this  day of
.



TRANSFEREEBy:Name:Title:Address:Address:Fax:




|                     |  | 
|-------------------- |  | 
|Accepted and Agreed:
|                    
|UNIDYM, INC.        
|                     | 
|By:                  |  | 
|Name:                |  | 
|Title:               |  | 



---

EXHIBIT B

CONSENT OF SPOUSE

I,
,
spouse of
,
acknowledge that I have read the Amended and Restated Voting Agreement, dated as of October [], 2007, to which this Consent is attached as Exhibit B (the Agreement), and that I know the
contents of the Agreement. I am aware that the Agreement contains provisions regarding the voting and transfer of shares of capital stock of the Company which my spouse may own, including any interest I might have therein.

I hereby agree that my interest, if any, in any shares of capital stock of the Company subject to the Agreement shall be irrevocably bound by the
Agreement and further understand and agree that any community property interest I may have in such shares of capital stock of the Company shall be similarly bound by the Agreement.

I am aware that the legal, financial and related matters contained in the Agreement are complex and that I am free to seek independent professional
guidance or counsel with respect to this Consent. I have either sought such guidance or counsel or determined after reviewing the Agreement carefully that I will waive such right.



|       |  |  |  |  |  |  |  | 
|------ |  |  |  |  |  |  |  | 
|Dated: |  |  |  |  |  |  |  | 



---

Schedule 2.11

Agreements; Action



---

Schedule 3.5

Qualification as an Accredited Investors

To qualify as an Accredited Investor one of the following must be true.
Contact the Company if none is applicable):



|  |  |                                                                                                                                                                                                                                                                                                                                                                                                
|- |  | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
| ̈ |  | A natural person whose net worth (or joint net worth with my spouse) is in excess of $1,000,000 as of the date hereof.                                                                                                                                                                                                                                                                         
|  | 
| ̈ |  | A natural person who had an individual income in excess of $200,000 in each of the two most recent years or joint income with that persons spouse in excess of $300,000 in each of those
years and has a reasonable expectation of reaching the same income level in the current year.                                                                                                        
|  | 
| ̈ |  | A trust with total assets in excess of $5,000,000, not formed for the specific purpose of investing in the Interest, whose purchases are directed by a sophisticated person as
described in Rule 506(b)(2)(ii) of the Act.                                                                                                                                                                   
|  | 
| ̈ |  | A bank, savings and loan association, or insurance company as defined in the Act.                                                                                                                                                                                                                                                                                                        
|  | 
| ̈ |  | An employee benefit plan as defined in the Employee Retirement Income Security Act of 1974 which has total assets in excess of $5,000,000.                                                                                                                                                                                                                                                   
|  | 
| ̈ |  | A Plan whose investment decisions, including the decision to subscribe for the Interest, are made solely by (i) a plan fiduciary as defined in the Employee Retirement Income
Security Act of 1974, which includes a bank, a savings and loan association, an insurance company or a registered investment adviser, or (ii) an accredited investor as defined under Rule 501(a) of the Act.
|  | 
| ̈ |  | A broker/dealer registered pursuant to Section 15 of the Securities Exchange Act of 1934.                                                                                                                                                                                                                                                                                                      
|  | 
| ̈ |  | A private business development company as defined in the Investment Advisers Act of 1940.                                                                                                                                                                                                                                                                                                    
|  | 
| ̈ |  | An investment company registered under, or a business development company as defined in, the Investment Company Act of 1940.                                                                                                                                                                                                                                                                 
|  | 
| ̈ |  | A Small Business Investment Company licensed by the U.S. Small Business Administration under the Small Business Investment Act of 1958.                                                                                                                                                                                                                                                        
|  | 
| ̈ |  | A plan established and maintained by a state, its political subdivisions, or any agency or instrumentality of a state or its political subdivisions, for the benefit of its employees and
having total assets in excess of $5,000,000.                                                                                                                                                         
|  | 
| ̈ |  | Any organization described in Section 501(c)(3) of the Internal Revenue Code, corporation, Massachusetts or similar business Trust, or Company, not formed for the specific purpose of
investing in the Interest and having total assets in excess of $5,000,000.                                                                                                                              
|  | 
| ̈ |  | Any entity in which all of the equity owners are accredited investors.