EX-10.1





 Exhibit 10.1 

LOAN AND SECURITY AGREEMENT 

THIS LOAN AND SECURITY AGREEMENT is made and dated as of October 29, 2019 and is entered into by and among SERES THERAPEUTICS, INC., a
Delaware corporation, each of its Subsidiaries from time to time party hereto as borrower (individually or collectively, as the context may require, “Borrower”), and the several banks and other financial institutions or entities
from time to time parties to this Agreement (each, a “Lender”, and collectively “Lenders”) and HERCULES CAPITAL, INC., a Maryland corporation, in its capacity as administrative agent and collateral agent for Lenders
(in such capacity, “Agent”). 
 RECITALS 

A. Borrower has requested Lenders to make available to Borrower one or more Advances in
an aggregate principal amount of up to $50,000,000; and 
 B. Lenders are willing to make such Advances on the terms and conditions set
forth in this Agreement. 
 AGREEMENT 

NOW, THEREFORE, Borrower, Agent and Lenders agree as follows: 

SECTION 1 

DEFINITIONS AND RULES OF CONSTRUCTION 

1.1 Unless otherwise defined herein, the following capitalized terms shall have the following meanings: 

“Account Control Agreement(s)” means any agreement entered into by and among Agent, Borrower and a third party bank or other
institution (including a Securities Intermediary) in which Borrower maintains a Deposit Account or an account holding Investment Property and which perfects Agent’s first priority security interest in the subject account or accounts. 

“ACH Authorization” means the ACH Debit Authorization Agreement in substantially the form of
Exhibit G, provided that account numbers shall be redacted for security purposes if and when filed publicly by Borrower. 

“Advance” means a Term Loan Advance. 

“Advance Date” means the funding date of any Advance. 

“Advance Request” means a request for an Advance submitted by Borrower to Agent in substantially the form of
Exhibit A, provided that account numbers shall be redacted for security purposes if and when filed publicly by Borrower. 

“Affiliate” means (a) any Person that directly or indirectly controls, is controlled by, or is under common control with
the Person in question, (b) any Person directly or indirectly owning, controlling or holding with power to vote twenty percent (20%) or more of the outstanding voting securities of another Person, or (c) any Person twenty percent (20%) or
more of whose outstanding voting securities are directly or indirectly owned, controlled or held by another Person with power to vote such securities. As used in the definition of “Affiliate,” the term “control” means the
possession, directly or indirectly, of the power to direct or cause the direction of the management and policies of a Person, whether through ownership of voting securities, by contract or otherwise. 

“Agreement” means this Loan and Security Agreement, as amended, restated, supplemented or otherwise modified from time to
time. 












 “Amortization Date” means December 1, 2021, provided however, if the
Interest Only Extension Condition is satisfied, then June 1, 2022. 
 “Anti-Corruption Laws” means all laws, rules,
and regulations of any jurisdiction applicable to Borrower or any of their respective Affiliates from time to time concerning or relating to bribery or corruption, including without limitation the United States Foreign Corrupt Practices Act of 1977,
as amended, the UK Bribery Act 2010 and other similar legislation in any other jurisdictions. 
 “Anti-Terrorism Laws” means any laws, rules, regulations or orders relating to terrorism or money laundering, including without limitation Executive Order No. 13224 (effective September 24, 2001), the
USA PATRIOT Act, the laws comprising or implementing the Bank Secrecy Act, and the laws administered by OFAC. 
 “Biologics License
Application” means an application for licensure of a biological product submitted to the FDA under 42 U.S.C. § 262 and 21 C.F.R. § 601.2 for permission to introduce, or deliver for introduction, a biologic product into interstate
commerce. 
 “Blocked Person” means any Person: (a) listed in the annex to, or is otherwise subject to the provisions
of, Executive Order No. 13224, (b) a Person owned or controlled by, or acting for or on behalf of, any Person that is listed in the annex to, or is otherwise subject to the provisions of, Executive Order No. 13224, (c) a Person
with which any Lender is prohibited from dealing or otherwise engaging in any transaction by any Anti-Terrorism Law, (d) a Person that commits, threatens or conspires to commit or supports “terrorism” as defined in Executive Order
No. 13224, or (e) a Person that is named a “specially designated national” or “blocked person” on the most current list published by OFAC or other similar list. 

“Board” means, with respect to any Person that is a corporation, its board of directors, with respect to any Person that is a
limited liability company, its board of managers, board of members or similar governing body, and with respect to any other Person that is a legal entity, such Person’s governing body in accordance with its Organizational Documents. 

“Business Day” means any day other than Saturday, Sunday and any other day on which banking institutions in the State of
California are closed for business. 
 “Cash” means all cash, cash equivalents and liquid funds. 

“CFC” means a controlled foreign corporation within the meaning of Section 957(a) of the Code. 

“Change in Control” means any reorganization, recapitalization, consolidation or merger (or similar transaction or series of
related transactions) of Borrower, sale or exchange of outstanding shares (or similar transaction or series of related transactions) of Borrower in which the holders of Borrower’s outstanding shares immediately before consummation of such
transaction or series of related transactions do not, immediately after consummation of such transaction or series of related transactions, retain shares representing more than fifty percent (50%) of the voting power of the surviving entity of such
transaction or series of related transactions (or the parent of such surviving entity if such surviving entity is wholly owned by such parent), in each case without regard to whether Borrower is the surviving entity. 

“Charter” means, with respect to any Person, such Person’s incorporation, formation or equivalent documents, as in
effect from time to time. 
 “Closing Date” means the date of this Agreement. 

“Code” means the Internal Revenue Code of 1986, as amended. 

“Compliance Certificate” means a certificate in the form attached hereto as Exhibit D 

  
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 “Contingent Obligation” means, as applied to any Person, any direct or
indirect liability, contingent or otherwise, of that Person with respect to (i) any Indebtedness, lease, dividend, letter of credit or other obligation of another, including any such obligation directly or indirectly guaranteed, endorsed, co-made or discounted or sold with recourse by that Person, or in respect of which that Person is otherwise directly or indirectly liable; (ii) any obligations with respect to undrawn letters of credit,
corporate credit cards or merchant services issued for the account of that Person; and (iii) all obligations arising under any interest rate, currency or commodity swap agreement, interest rate cap agreement, interest rate collar agreement, or
other agreement or arrangement designated to protect a Person against fluctuation in interest rates, currency exchange rates or commodity prices; provided, however, that the term “Contingent Obligation” shall not include endorsements for
collection or deposit in the ordinary course of business. The amount of any Contingent Obligation shall be deemed, without duplication of the primary obligation, to be an amount equal to the stated or determined amount of the primary obligation in
respect of which such Contingent Obligation is made or, if not stated or determinable, the maximum reasonably anticipated liability in respect thereof as determined by such Person in good faith; provided, however, that such amount shall not in any
event exceed the maximum amount of the obligations under the guarantee or other support arrangement. For the avoidance of doubt, no Permitted Bond Hedge Transaction or Permitted Warrant Transaction will be considered a Contingent Obligation of
Borrower. 
 “Copyright License” means any written agreement granting any right to use any Copyright or Copyright
registration, now owned or hereafter acquired by Borrower or in which Borrower now holds or hereafter acquires any interest. 

“Copyrights” means all copyrights, whether registered or unregistered, held pursuant to the laws of the United States of
America, any State thereof, or of any other country. 
 “Deposit Accounts” means any “deposit accounts,” as such
term is defined in the UCC, and includes any checking account, savings account, or certificate of deposit. 
 “Domestic
Subsidiary” means any Subsidiary organized under the laws of the United States of America, any State thereof, the District of Columbia, or any other jurisdiction within the United States of America. 

“Due Diligence Fee” means $25,000, which fee has been paid to Agent prior to the Closing Date, and shall be deemed fully
earned on such date regardless of the early termination of this Agreement. 
 “Equity Interests” means, with respect to any
Person, the capital stock, partnership or limited liability company interest, or other equity securities or equity ownership interests of such Person. 

“ERISA” means the Employee Retirement Income Security Act of 1974, as amended, and the regulations promulgated thereunder.

 “Excluded Account” means any of the following accounts which are designated as such in writing to Agent as
of the Closing Date or, with respect to any account opened after the Closing Date, in the next Compliance Certificate delivered after such account is opened: (i) accounts held by the MSC Subsidiary, (ii) accounts used exclusively to
maintain cash collateral subject to a Permitted Lien, (iii) any payroll or benefits account, provided that the aggregate balance of all such accounts shall not exceed the amount of all payroll or related benefit payments required to be made in
the two next payroll periods, and (iv) any zero balance account. 
 “Excluded Subsidiaries” means all Foreign
Subsidiaries, Foreign Subsidiary Holding Companies and the MSC Subsidiary. 
 “FDA” means the U.S. Food and Drug
Administration or any successor thereto or any other comparable governmental authority. 
 “Foreign Subsidiary” means a
Subsidiary other than a Domestic Subsidiary. 

  
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 “Foreign Subsidiary Holding Company” means any Domestic Subsidiary that
owns (directly or indirectly) no material assets other than Equity Interests (or Equity Interests and debt interests) of one or more (a) CFCs or (b) other Foreign Subsidiary Holding Companies. 

“GAAP” means generally accepted accounting principles in the United States of America, as in effect from time to time. 

“Guarantor” means any subsidiary of Borrower that enters into a Guaranty. 

“Guaranty” means a guaranty with respect to the Secured Obligations, in form and substance satisfactory to Agent. 

“Indebtedness” means indebtedness of any kind, including (a) all indebtedness for borrowed money or the deferred
purchase price of property or services (excluding trade credit entered into in the ordinary course of business ), including reimbursement and other obligations with respect to surety bonds and letters of credit, (b) all obligations evidenced by
notes, bonds, debentures or similar instruments, (c) all capital lease obligations, (d) equity securities of any Person subject to repurchase or redemption other than at the sole option of such Person, (e) “earnouts”, purchase price
adjustments, profit sharing arrangements, deferred purchase money amounts and similar payment obligations or continuing obligations of any nature arising out of purchase and sale contracts, (f) non-contingent obligations to reimburse any
bank or Person in respect of amounts paid under a letter of credit, banker’s acceptance or similar instrument, and (g) all Contingent Obligations. 

“Initial Facility Charge” means a charge of $375,000. 

“Intellectual Property” means all of Borrower’s Copyrights; Trademarks; Patents; Licenses; trade secrets and inventions;
mask works; Borrower’s applications therefor and reissues, extensions, or renewals thereof; and Borrower’s goodwill associated with any of the foregoing, together with Borrower’s rights to sue for past, present and future infringement
of Intellectual Property and the goodwill associated therewith. 
 “Interest Only Extension Condition” means satisfaction
of each of the following events: (a) no default or Event of Default shall have occurred and be continuing and (b) Performance Milestone I and Performance Milestone II shall have been met. 

“Investment” means any beneficial ownership (including stock, partnership interests, limited liability company interests or
other securities) of or in any Person, or any loan, advance or capital contribution to any Person or the acquisition of any capital asset of another Person not in the ordinary course of Borrower’s business. 

“IRS” means the United States Internal Revenue Service. 

“Joinder Agreements” means for each Subsidiary (other than Excluded Subsidiaries and the MSC Subsidiary), a completed and
executed Joinder Agreement in substantially the form attached hereto as Exhibit G. 
 “License”
means any Copyright License, Patent License, Trademark License or other Intellectual Property license of rights or interests. 

“Lien” means any mortgage, deed of trust, pledge, hypothecation, assignment for security, security interest, encumbrance,
levy, lien or charge of any kind, whether voluntarily incurred or arising by operation of law or otherwise, against any property, any conditional sale or other title retention agreement, and any lease in the nature of a security interest. 

“Loan” means the Advances made under this Agreement. 

“Loan Documents” means this Agreement, the promissory notes (if any), the ACH Authorization, the Account Control Agreements,
any Joinder Agreements, all UCC Financing Statements, the Guaranty (if any) and any other documents executed in connection with the Secured Obligations or the transactions contemplated hereby, as the same may from time to time be amended, modified,
supplemented or restated. 

  
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 “Loan Party” means Borrower or any Guarantor. 

“Market Capitalization” means, for any given date of determination, an amount equal to (a) the average of the daily
volume weighted average price of Borrower’s common stock as reported for each of the five (5) trading days preceding such date of determination (it being understood that a “trading day” shall mean a day on which shares of
Borrower’s common stock trade on the NASDAQ (or, if the primary listing of such common stock is on another exchange, on such other exchange) in an ordinary trading session) multiplied by (b) the total number of issued
and outstanding shares of Borrower’s common stock that are issued and outstanding on the date of the determination and listed on the NASDAQ (or, if the primary listing of such common stock is on another exchange, on such other exchange),
subject to appropriate adjustment for any stock dividend, stock split, stock combination, reclassification or other similar transaction during the applicable calculation period. 

“Material Adverse Effect” means a material adverse effect upon: (i) the business, operations, properties, assets or
financial condition of Borrower and its Subsidiaries taken as a whole; or (ii) the ability of Borrower to perform or pay the Secured Obligations in accordance with the terms of the Loan Documents, or the ability of Agent or Lenders to enforce
any of its rights or remedies with respect to the Secured Obligations; or (iii) the Collateral or Agent’s Liens on the Collateral or the priority of such Liens. 

“Material Intellectual Property” means all Intellectual Property the loss of which could reasonably be expected to have a
Material Adverse Effect, provided that, for the avoidance of doubt, Intellectual Property related to SER109, 287, 301, and 401, including any indication that Borrower is pursuing as of the Closing Date. 

“Maximum Term Loan Amount” means Fifty Million Dollars ($50,000,000.00). 

“MSC Investment Conditions” means that Borrower maintains Unrestricted Cash in an amount equal to or greater than 110% of the
aggregate outstanding Secured Obligations (inclusive of any Prepayment Charge and End of Term Charge that would be due and owing if the outstanding Loans were prepaid at the time of measurement). 

“MSC Subsidiary” means Seres Therapeutics Securities Corporation, a wholly-owned Subsidiary incorporated in the Commonwealth
of Massachusetts or the State of Delaware for the purpose of holding Investments as a Massachusetts security corporation under 830 CMR 63.38B.1 of the Massachusetts tax code and applicable regulations (as the same may be amended, modified or
replaced from time to time). 
 “Non-Disclosure Agreement” means that certain Non-Disclosure Agreement/Confidentiality Agreement by and between Borrower and Agent dated as of August 14, 2019. 

“OFAC” means the U.S. Department of Treasury Office of Foreign Assets Control. 

“OFAC Lists” means, collectively, the Specially Designated Nationals and Blocked Persons List maintained by OFAC pursuant to
Executive Order No. 13224, 66 Fed. Reg. 49079 (Sept. 25, 2001) and/or any other list of terrorists or other restricted Persons maintained pursuant to any of the rules and regulations of OFAC or pursuant to any other applicable Executive Orders.

 “Organizational Documents” means with respect to any Person, such Person’s Charter, and (a) if such Person is
a corporation, its bylaws, (b) if such Person is a limited liability company, its limited liability company agreement (or similar agreement), and (c) if such Person is a partnership, its partnership agreement (or similar agreement), each
of the foregoing with all current amendments or modifications thereto. 
 “Patent License” means any written agreement
granting any right with respect to any invention on which a Patent is in existence or a Patent application is pending, in which agreement Borrower now holds or hereafter acquires any interest. 

  
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 “Patents” means all letters patent of, or rights corresponding thereto, in
the United States of America or in any other country, all registrations and recordings thereof, and all applications for letters patent of, or rights corresponding thereto, in the United States of America or any other country. 

“Performance Milestone I” means no later than June 30, 2020, Borrower shall have announced that Borrower’s Phase 3
ECOSPOR III trial has achieved the protocol-specified primary efficacy endpoint of statistically significant improvement in recurrence of C. difficile infection up to 8 weeks after treatment, which supports the filing of a Biologics License
Application with the FDA seeking regulatory approval of a Product for the treatment of C. difficile infection as the next clinical step. 

“Performance Milestone II” means no later than October 31, 2020 (or, if (i) Performance Milestone I has been
achieved or (ii) Borrower maintains Unrestricted Cash in an amount not less than $20,000,000 at all times from October 31, 2020 until the earlier of (x) December 31, 2020 or (y) the date this Performance Milestone II is met,
no later than December 31, 2020), Borrower shall have announced that Borrower’s Phase 2b ECORESET trial has achieved the protocol-specified primary efficacy endpoint of a statistically significant improvement in clinical remission after 10
weeks of induction dosing and demonstrates an approvable safety profile, which together shall be sufficient to qualify as “pivotal” data for one of two pivotal studies necessary for the filing of the Biologics License Application to the
FDA seeking regulatory approval of a Product for the treatment of mild-to-moderate ulcerative colitis. 

“Permitted Acquisition” means any acquisition (including without limitation by way of merger or in-licensing arrangement by Borrower of all or substantially all of the assets of another Person, or of a division or line of business of another Person, or capital stock of another Person, which is conducted in
accordance with the following requirements: 
 (a) such acquisition is of a business or Person engaged in a line of business substantially
related to that of Borrower or its Subsidiaries; 
 (b) if such acquisition is structured as a stock acquisition, then the Person so
acquired shall either (i) become a wholly-owned Subsidiary of Borrower or of a Subsidiary and Borrower shall comply, or cause such Subsidiary to comply, with Section 7.13 hereof or (ii) such Person shall be merged
with and into Borrower (with Borrower being the surviving entity); 
 (c) if such acquisition is structured as the acquisition of assets,
such assets shall be acquired by Borrower, and shall be free and clear of Liens other than Permitted Liens; 
 (d) Borrower shall have
delivered to Lenders not less than seven (7) nor more than twenty (20) days prior to the date of such acquisition, notice of such acquisition together with pro forma projected financial information, copies of all material documents
relating to such acquisition, and historical financial statements for such acquired entity, division or line of business (to the extent applicable), in each case in form reasonably satisfactory to Lenders and demonstrating compliance with the
covenants set forth in Section 7.19 hereof on a pro forma basis as if the acquisition occurred on the first day of the most recent measurement period; 

(e) both immediately before and after such acquisition no default or Event of Default shall have occurred and be continuing; and 

(f) the sum of the purchase price of such proposed new acquisition, computed on the basis of total acquisition consideration paid or incurred,
or to be paid or incurred, by Borrower with respect thereto, including any contingent or deferred acquisition consideration, and including the amount of Permitted Indebtedness assumed or to which such assets, businesses or business or ownership
interest or shares, or any Person so acquired, is subject, shall not be greater than (i) $2,500,000 in cash for any single acquisition or group of related acquisitions or (ii) $5,000,000 in for all such acquisitions during the term of this
Agreement; provided that acquisition consideration funded by proceeds from the sale and issuance of Borrower’s Equity Interests in a transaction not resulting in a Change in Control, which sale and issuance has a primary purpose to fund such
acquisition, and which sale and issuance is consummated substantially contemporaneously with (and in any event, prior to, but no more fifteen (15) days prior to) the consummation of such acquisition, shall be disregarded in determining
compliance with this clause (f), provided further, that for any acquisition in which the consideration consists solely of Equity Interests of Borrower, the value of such Equity Interests shall be disregarded in determining compliance with
this clause (f). 

  
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 “Permitted Bond Hedge Transaction” means any call or capped call option (or
substantively equivalent derivative transaction) relating to Borrower’s common stock (or other securities or property following a merger event or other change of the common stock of Borrower) purchased by Borrower in connection with the
issuance of any Permitted Convertible Debt. 
 “Permitted Convertible Debt” means Indebtedness that is convertible into a
fixed number (subject to customary anti-dilution adjustments, “make-whole” increases and other customary changes thereto) of shares of common stock of Borrower (or other securities or property following a merger event or other change of
the common stock of Borrower), cash or any combination thereof (with the amount of such cash or such combination determined by reference to the market price of such common stock or such other securities); provided that such Indebtedness shall
(a) not require any scheduled amortization or otherwise required payment of principal prior to, or have a scheduled maturity date, earlier than, one hundred eighty (180) days after the Term Loan Maturity Date, (b) be unsecured,
(c) not be guaranteed by any Subsidiary of Borrower that is not also a Loan Party, and (d) shall be Indebtedness of Seres Therapeutics, Inc. and not any Subsidiary thereof.  

“Permitted Indebtedness” means: 

(a) Indebtedness of Borrower in favor of any Lender or Agent arising under this Agreement or any other Loan Document; 

(b) Indebtedness existing on the Closing Date which is disclosed in Schedule 1A; 

(c) Indebtedness of up to $500,000 outstanding at any time secured by a Lien described in clause (g) of the
defined term “Permitted Liens”, provided such Indebtedness does not exceed the cost of the Equipment or software or other intellectual property financed with such Indebtedness; 

(d) (i) Indebtedness to trade creditors incurred in the ordinary course of business and (ii) Indebtedness incurred in the ordinary course
of business with corporate credit cards in an aggregate amount not to exceed $500,000 outstanding at any time; 
 (e) Indebtedness that also
constitutes a Permitted Investment or is secured by a Permitted Lien; 
 (f) Subordinated Indebtedness; 

(g) reimbursement obligations in connection with letters of credit that are secured by Cash and issued on behalf of Borrower or a Subsidiary
in an amount not to exceed $3,000,000 at any time outstanding; 
 (h) intercompany Indebtedness as long as each of the Subsidiary obligor
and the Subsidiary obligee under such Indebtedness is a Subsidiary that has executed a Joinder Agreement, or other intercompany Indebtedness resulting from a Permitted Investment in accordance with clause (j) of the defined term
“Permitted Investments”; 
 (i) Permitted Convertible Debt in an aggregate principal amount not to exceed $150,000,000 at any one
time outstanding; 
 (j) other unsecured Indebtedness in an amount not to exceed $1,000,000 at any time outstanding; and 

(k) extensions, refinancings and renewals of any items of Permitted Indebtedness, provided that the principal amount is not increased or the
terms modified to impose materially more burdensome terms upon Borrower or the applicable Subsidiary, as the case may be, and subject to any limitations on aggregate amount of such Indebtedness. 

  
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 “Permitted Investment” means: 

(a) Investments existing on the Closing Date which are disclosed in Schedule 1B; 

(b) (i) marketable direct obligations issued or unconditionally guaranteed by the United States of America or any agency or any State
thereof maturing within one year from the date of acquisition thereof currently having a rating of at least A-2 or P-2 from either Standard & Poor’s
Corporation or Moody’s Investors Services, (ii) commercial paper maturing no more than one year from the date of creation thereof and currently having a rating of at least A-2 or P-2 from either Standard & Poor’s Corporation or Moody’s Investors Services, (iii) certificates of deposit issued by any bank with assets of at least $500,000,000 maturing no more than one
year from the date of investment therein, (iv) money market accounts, and (v) Investments pursuant to the investment policy that has been provided to the Agent prior to the Closing Date or any investment policy that has been approved by
the Agent; 
 (c) repurchases of stock of Borrower from former employees, directors, or consultants of Borrower under the terms of
applicable repurchase agreements at the original issuance price of such securities in an aggregate amount not to exceed $500,000 in any fiscal year, provided that no Event of Default has occurred, is continuing or could exist after giving effect to
the repurchases; 
 (d) Investments accepted in connection with Permitted Transfers; 

(e) Investments (including debt obligations) received in connection with the bankruptcy or reorganization of customers or suppliers and in
settlement of delinquent obligations of, and other disputes with, customers or suppliers arising in the ordinary course of business; 
 (f)
Investments consisting of notes receivable of, or prepaid royalties and other credit extensions, to customers and suppliers who are not Affiliates, in the ordinary course of business, provided that this clause (f) shall not
apply to Investments of any Loan Party in any Subsidiary of a Loan Party; 
 (g) Investments consisting of loans not involving the net
transfer on a substantially contemporaneous basis of cash proceeds to employees, officers or directors relating to the purchase of capital stock of Borrower pursuant to employee stock purchase plans or other similar agreements approved by
Borrower’s Board; 
 (h) Investments consisting of travel advances in the ordinary course of business; 

(i) Investments in newly-formed Domestic Subsidiaries, provided that each such Domestic Subsidiary enters into a Joinder Agreement promptly
after its formation and executes such other documents as shall be reasonably requested by Agent; 
 (j) Investments in Foreign Subsidiaries
not to exceed $500,000 per fiscal year; 
 (k) joint ventures or strategic alliances in the ordinary course of business consisting of the
licensing of technology, the development of technology or the providing of technical support as permitted hereunder, provided that cash Investments (if any) by Borrower or the applicable Subsidiary do not exceed $500,000 in the aggregate in any
fiscal year; 
 (l) Investments in the MSC Subsidiary, so long as an Event of Default does not exist at the time of such Investment and
would not exist after giving effect to such Investment and provided that Borrower is, at all times, in compliance with the MSC Investment Conditions; 

(m) Investments constituting Permitted Acquisitions; 

(n) Borrower’s entry into (including payments of premiums in connection therewith), and the performance of obligations under, any
Permitted Bond Hedge Transactions and Permitted Warrant Transactions in accordance with their terms; and 
 (o) additional Investments that
do not exceed $1,000,000 in the aggregate. 

  
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 “Permitted Liens” means: 

(a) Liens in favor of Agent; 

(b) Liens existing on the Closing Date which are disclosed in Schedule 1C; 

(c) Liens for taxes, fees, assessments or other governmental charges or levies, either not yet delinquent or being contested in good faith by
appropriate proceedings; provided, that Borrower maintains adequate reserves therefor in accordance with GAAP; 
 (d) Liens securing claims
or demands of materialmen, artisans, mechanics, carriers, warehousemen, landlords and other like Persons arising in the ordinary course of business and imposed without action of such parties; provided, that the payment thereof is not yet required;

 (e) Liens arising from judgments, decrees or attachments in circumstances which do not constitute an Event of Default hereunder; 

(f) the following deposits, to the extent made in the ordinary course of business: deposits under worker’s compensation, unemployment
insurance, social security and other similar laws, or to secure the performance of bids, tenders or contracts (other than for the repayment of borrowed money) or to secure indemnity, performance or other similar bonds for the performance of bids,
tenders or contracts (other than for the repayment of borrowed money) or to secure statutory obligations (other than Liens arising under ERISA or environmental Liens) or surety or appeal bonds, or to secure indemnity, performance or other similar
bonds; 
 (g) Liens on Equipment or software or other intellectual property constituting purchase money Liens and Liens in connection with
capital leases securing Indebtedness permitted in clause (c) of “Permitted Indebtedness”; 
 (h)
Liens incurred in connection with Subordinated Indebtedness; 
 (i) leasehold interests in leases or subleases and licenses (other than with
respect to Intellectual Property) granted in the ordinary course of business and not interfering in any material respect with the business of the licensor; 

(j) Liens in favor of customs and revenue authorities arising as a matter of law to secure payment of custom duties that are promptly paid on
or before the date they become due; 
 (k) Liens on insurance proceeds securing the payment of financed insurance premiums that are promptly
paid on or before the date they become due (provided that such Liens extend only to such insurance proceeds and not to any other property or assets); 

(l) statutory and common law rights of set-off and other similar rights as to deposits of cash and
securities in favor of banks, other depository institutions and brokerage firms or securities intermediaries to cover fees, similar expenses and charges; 

(m) easements, servitudes, zoning restrictions, rights-of-way
and similar encumbrances on real property imposed by law or arising in the ordinary course of business so long as they do not materially impair the value or marketability of the related property; 

(n) licenses and other arrangements for the use of Intellectual Property permitted hereunder; 

(o) (i) Liens on Cash securing obligations permitted under clause (g) of the definition of Permitted
Indebtedness and (ii) security deposits in connection with real property leases, the combination of (i) and (ii) in an aggregate amount not to exceed $3,000,000 at any time; and 

  
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 (p) Liens incurred in connection with the extension, renewal or refinancing of the
Indebtedness secured by Liens of the type described in clause (b) above; provided, that any extension, renewal or replacement Lien shall be limited to the property encumbered by the existing Lien and the principal
amount of the Indebtedness being extended, renewed or refinanced (as may have been reduced by any payment thereon) does not increase. 

“Permitted Transfers” means: 

(a) sales of Inventory in the ordinary course of business; 

(b) (i) licenses, obligations and other rights and arrangements pursuant to the Collaboration and License Agreement, dated January 9,
2016, by and between Nestec Ltd. and Borrower, as amended, restated or modified from time to time, (ii) licenses, obligations and other rights and arrangements granted pursuant to the Research and Collaboration and Option Agreement, dated
March 11, 2019, by and between MedImmune, LLC and Borrower, as amended, restated or modified form time to time, (iii) non-exclusive licenses and similar arrangements for the use of Intellectual
Property in the ordinary course of business, and (iv) exclusive licenses, entered into on an arms’ length basis, and which do not result in legal transfer of the licensed property, provided that such licenses are either (A) licenses
of Intellectual Property which are exclusive with respect to geography only as to specific geographic territories or countries outside of the United States, or (B) a license of Intellectual Property which may be exclusive with respect to
geography worldwide, including the United States, or just the United States, provided further that any exclusive license on the terms set forth in clause (B) shall be a “Permitted Transfer” only if following the
entry into such license Borrower maintains Unrestricted Cash in an amount of at least 105% of the Secured Obligations at all times; 
 (c)
dispositions of worn-out, obsolete or surplus Equipment at fair market value in the ordinary course of business; 

(d) use of Cash in the ordinary course of business or as otherwise permitted herein; 

(e) sale of stock or other shares in the ordinary course of business; 

(f) transfers constituting the making of Permitted Investments, or the granting of Permitted Liens; and 

(g) other transfers of assets having a fair market value of not more than $500,000 in the aggregate in any fiscal year. 

“Permitted Warrant Transaction” means any call option, warrant or right to purchase (or substantively equivalent derivative
transaction) relating to Borrower’s common stock (or other securities or property following a merger event or other change of the common stock of Borrower) and/or cash (in an amount determined by reference to the price of such common stock)
sold by Borrower substantially concurrently with any purchase by Borrower of a related Permitted Bond Hedge Transaction. 

“Person” means any individual, sole proprietorship, partnership, joint venture, trust, unincorporated organization,
association, corporation, limited liability company, institution, other entity or government. 
 “Pledge Agreement” means
the Pledge Agreement dated as of the Closing Date between Borrower and Agent, as the same may from time to time be amended, restated, modified or otherwise supplemented. 

“Products” means all products, software, service offerings, technical data or technology currently being designed,
manufactured or sold by Borrower or any of its Subsidiaries or which Borrower or any of its Subsidiaries intends to sell, license, or distribute in the future including any products or service offerings under development, collectively, together with
all products, software, service offerings, technical data or technology that have been sold, licensed or distributed by Borrower since formation. 

  
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 “Receivables” means (i) all of Borrower’s Accounts, Instruments,
Documents, Chattel Paper, Supporting Obligations, letters of credit, proceeds of any letter of credit, and Letter of Credit Rights, and (ii) all customer lists, software, and business records related thereto. 

“Redemption Conditions” means, with respect to any redemption by Borrower of any Permitted Convertible Debt, satisfaction of
each of the following events: (a) no Default or Event of Default shall exist or result therefrom, and (b) both immediately before and at all times after such redemption, Borrower’s Unrestricted Cash shall be no less than 150% of the
outstanding Secured Obligations. 
 “Required Lenders” means at any time, the holders of more than 50% of the sum of the
aggregate unpaid principal amount of the Term Loan Advances then outstanding. 
 “Sanctioned Country” means, at any time, a
country or territory which is the subject or target of any Sanctions. 
 “Sanctioned Person” means, at any time,
(a) any Person listed in any Sanctions-related list of designated Persons maintained by the Office of Foreign Assets Control of the U.S. Department of the Treasury or the U.S. Department of State, or by the United Nations Security Council, the
European Union or any EU member state, (b) any Person operating, organized or resident in a Sanctioned Country or (c) any Person controlled by any such Person. 

“Sanctions” means economic or financial sanctions or trade embargoes imposed, administered or enforced from time to time by
(a) the U.S. government, including those administered by the Office of Foreign Assets Control of the U.S. Department of the Treasury or the U.S. Department of State, or (b) the United Nations Security Council, the European Union or Her
Majesty’s Treasury of the United Kingdom. 
 “SBA Funding Date” means each date on which a Lender which is an SBIC
funds any portion of the Loan, which such date can only occur upon the confirmation by Borrower in its sole discretion that on such date it meets the requirements under Addendum 2. 

“Secured Obligations” means each Borrower’s obligations under this Agreement and any Loan Document, including any
obligation to pay any amount now owing or later arising. 
 “Subordinated Indebtedness” means Indebtedness subordinated to
the Secured Obligations in amounts and on terms and conditions satisfactory to Agent in its reasonable discretion and subject to a subordination agreement in form and substance satisfactory to Agent in its reasonable discretion. 

“Subsidiary” means an entity, whether a corporation, partnership, limited liability company, joint venture or otherwise, in
which Borrower owns or controls 50% or more of the outstanding voting securities, directly or indirectly. If not otherwise specified, a Subsidiary shall mean a direct or indirect Subsidiary of Borrower, including each entity listed on Schedule
5.14 hereto. 
 “Taxes” means all present or future taxes, levies, imposts, duties, deductions, withholdings (including
backup withholding), assessments, fees or other charges imposed by any governmental authority, including any interest, additions to tax or penalties applicable thereto. 

“Term Commitment” means as to any Lender, the obligation of such Lender, if any, to make a Term Loan Advance to Borrower in a
principal amount not to exceed the amount set forth under the heading “Term Commitment” opposite such Lender’s name on Schedule 1.1. 

“Term Loan Advance” means an Advance pursuant to Section 2.1(a) 

“Term Loan Interest Rate” means, for any day, a per annum rate of interest equal to the greater of (i) the prime rate as
reported in The Wall Street Journal, plus 4.40%, and (ii) 9.65%. 
 “Term Loan Maturity Date” means November 1, 2023;
provided that if such day is not a Business Day, the Term Loan Maturity Date shall be the immediately preceding Business Day. 

  
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 “Trademark License” means any written agreement granting any right to use
any Trademark or Trademark registration, now owned or hereafter acquired by Borrower or in which Borrower now holds or hereafter acquires any interest. 

“Trademarks” means all trademarks (registered, common law or otherwise) and any applications in connection therewith,
including registrations, recordings and applications in the United States Patent and Trademark Office or in any similar office or agency of the United States of America, any State thereof or any other country or any political subdivision thereof.

 “Tranche III” means the advances pursuant to Section 2.1(a)(iii). 

“Tranche III Facility Charge” means one percent (1.0%) of the principal amount of any Advance pursuant to Tranche III, which
is payable to Lenders in accordance with Section 4.2(d). 
 “UCC” means the Uniform Commercial
Code as the same is, from time to time, in effect in the State of California; provided, that in the event that, by reason of mandatory provisions of law, any or all of the attachment, perfection or priority of, or remedies with respect to,
Agent’s Lien on any Collateral is governed by the Uniform Commercial Code as the same is, from time to time, in effect in a jurisdiction other than the State of California, then the term “UCC” shall mean the Uniform Commercial Code as
in effect, from time to time, in such other jurisdiction solely for purposes of the provisions thereof relating to such attachment, perfection, priority or remedies and for purposes of definitions related to such provisions. 

“Unrestricted Cash” means unrestricted Cash of Borrower maintained in Deposit Accounts or other accounts in Borrower’s
name subject to an Account Control Agreement in favor of Agent, subject to any post-closing period provided under this Agreement to deliver Account Control Agreements. 

“U.S. Person” means any Person that is a “United States person” as defined in Section 7701(a)(30) of the Code.

 1.1 Certain Additional Defined Terms. The following terms are defined in the Sections or subsections referenced opposite such
terms: 
  

			
	 Defined Term
	  	 Section

	 “Agent”
	  	Preamble
	 “Assignee”
	  	11.13
	 “Borrower”
	  	Preamble
	 “Claims”
	  	11.10
	 “Collateral”
	  	3.1
	 “Confidential Information”
	  	11.12
	 “End of Term Charge”
	  	2.5
	 “Event of Default”
	  	9
	 “Financial Statements”
	  	7.1
	 “Lender”
	  	Preamble
	 “Maximum Rate”
	  	2.2
	 “Prepayment Charge”
	  	2.4
	 “Publicity Materials”
	  	11.18
	 “Register”
	  	11.7
	 “Rights to Payment”
	  	1.1
	 “SBA”
	  	7.16
	 “SBIC”
	  	7.16
	 “SBIC Act”
	  	7.16


  
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 Unless otherwise specified, all references in this Agreement or any Annex or Schedule hereto
to a “Section,” “subsection,” “Exhibit,” “Annex,” or “Schedule” shall refer to the corresponding Section, subsection, Exhibit, Annex, or Schedule in or to this Agreement. Unless otherwise
specifically provided herein, any accounting term used in this Agreement or the other Loan Documents shall have the meaning customarily given such term in accordance with GAAP, and all financial computations hereunder shall be computed in accordance
with GAAP, consistently applied. Unless otherwise defined herein or in the other Loan Documents, terms that are used herein or in the other Loan Documents and defined in the UCC shall have the meanings given to them in the UCC. For all purposes
under the Loan Documents, in connection with any division or plan of division under Delaware law (or any comparable event under a different jurisdiction’s laws): (a) if any asset, right, obligation or liability of any Person becomes the asset,
right, obligation or liability of a different Person, then it shall be deemed to have been transferred from the original Person to the subsequent Person and (b) if any new Person comes into existence, such new Person shall be deemed to have
been organized on the first date of its existence by the holders of its Equity Interests at such time. 
 Notwithstanding anything to the
contrary in this Agreement or any other Loan Document, all terms of an accounting or financial nature used herein shall be construed, and all computations of amounts and ratios referred to herein shall be made without giving effect to any treatment
of Indebtedness in respect of convertible debt instruments under Accounting Standards Codification 470-20 (or any other Accounting Standards Codification or Financial Accounting Standard having a similar
result or effect) to value any such Indebtedness in a reduced or bifurcated manner as described therein, and such Indebtedness shall at all times be valued at the full stated principal amount thereof. For the avoidance of doubt, and without
limitation of the foregoing, Permitted Convertible Debt shall at all times be valued at the full stated principal amount thereof and shall not include any reduction or appreciation in value of the shares deliverable upon conversion thereof. 

SECTION 2 
 THE LOAN

 2.1 Term Loan Advances. 

(a) Term Commitment. 

(i) Tranche I. Subject to the terms and conditions of this Agreement, (A) on the Closing Date, Lenders shall
severally (and not jointly) make, and Borrower agrees to draw, a Term Loan Advance of $15,000,000, and (B) at any time prior to March 15, 2020, Borrower may request and Lenders shall severally (and not jointly) make, additional Term Loan
Advances, in minimum increments of $5,000,000 (or if less than $5,000,000 the remaining amount of Term Loan Advances available to be drawn pursuant to this Section 2.1(a)(i)), provided that the aggregate principal amount of
the Term Loan Advances made pursuant to this Section 2.1(a)(i) shall not exceed $25,000,000. 

  
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 (ii) Tranche II. Subject to the terms and conditions of this
Agreement and satisfaction of Performance Milestone II, on or prior to March 15, 2021, Borrower may request, and Lenders shall severally (and not jointly) make, an additional Term Loan Advance of $12,500,000. 

(iii) Tranche III. Subject to the terms and conditions of this Agreement and future approval by Lenders’ investment
committee to support the in-licensing or acquisition of assets by Borrower or other strategic initiatives of Borrower, on or prior to June 30, 2021, Borrower may request, and Lenders shall severally (and
not jointly) make, one or more additional Term Loan Advances in minimum increments of $5,000,000 (or if less than $5,000,000 the remaining amount of Term Loan Advances available to be drawn pursuant to this
Section 2.1(a)(i)) in an aggregate principal amount up to $12,500,000. 
 The aggregate outstanding Term Loan
Advances shall not exceed the Maximum Term Loan Amount. Each Term Loan Advance of each Lender shall not exceed its respective Term Commitment. 

(b) Advance Request. To obtain a Term Loan Advance, Borrower shall complete, sign and deliver an Advance Request to
Agent at least three (3) Business Days before the Advance Date, other than the Term Loan Advance to be made on the Closing Date, which shall be at least one (1) Business Day before the Advance Date. Lenders shall fund the Term Loan Advance
in the manner requested by the Advance Request provided that each of the conditions precedent to such Term Loan Advance is satisfied as of the requested Advance Date. 

(c) Interest. The principal balance of each Term Loan Advance shall bear interest thereon from such Advance Date at the
Term Loan Interest Rate based on a year consisting of 360 days, with interest computed daily based on the actual number of days elapsed. The Term Loan Interest Rate will float and change on the day the “prime rate” as reported in the Wall
Street Journal changes from time to time. 
 (d) Payment. Borrower shall pay interest on each Term Loan Advance on the
first Business Day of each month, beginning the month after the Advance Date continuing until the Amortization Date. Borrower shall repay the aggregate principal balance of the Term Loan Advances that is outstanding on the day immediately preceding
the Amortization Date, in equal monthly installments of principal and interest (mortgage style) beginning on the Amortization Date and continuing on the first Business Day of each month thereafter until the Secured Obligations (other than inchoate
indemnity obligations) are repaid, provided that if the Term Loan Interest Rate is adjusted in accordance with its terms, or the Amortization Date is extended, the amount of each subsequent monthly installment shall be recalculated. The entire
principal balance of the Term Loan Advances and all accrued but unpaid interest hereunder, shall be due and payable on the Term Loan Maturity Date. Borrower shall make all payments under this Agreement without setoff, recoupment or deduction and
regardless of any counterclaim or defense. If a payment hereunder becomes due and payable on a day that is not a Business Day, the due date thereof shall be the immediately preceding Business Day. Agent, for the benefit of Lenders, shall initiate
debit entries to Borrower’s account as authorized on the ACH Authorization (i) on each payment date of all periodic obligations payable to Lenders under each Term Loan Advance and (ii) out-of-pocket legal fees and costs incurred by Agent or Lenders in connection with Section 11.11 of this Agreement; provided that, with respect to
clause (i) above, in the event that Agent informs Borrower that Agent shall not initiate a debit entry to Borrower’s account for a certain amount of the periodic obligations due on a specific payment date,
Borrower shall pay to Agent, for the benefit of Lenders, such amount of periodic obligations in full in immediately available funds on such payment date; provided, further, that, with respect to clause (i) above, if
Agent informs Borrower that Agent shall not initiate a debit entry as described above later than the date that is three (3) Business Days prior to such payment date, Borrower shall pay to Agent, for the ratable benefit of Lenders, such amount
of periodic obligations in full in immediately available funds on the date that is three (3) Business Days after the date on which Agent notifies Borrower thereof; provided, further, that, with respect to
clause (ii) above, in the event that Agent informs Borrower that Agent shall not initiate a debit entry to Borrower’s account for specified
out-of-pocket legal fees and costs incurred by Agent or Lenders, Borrower shall pay to Agent such amount in full in immediately available funds within three
(3) Business Days. 

  
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 2.2 Maximum Interest. Notwithstanding any provision in this Agreement or any other
Loan Document, it is the parties’ intent not to contract for, charge or receive interest at a rate that is greater than the maximum rate permissible by law that a court of competent jurisdiction shall deem applicable hereto (which under the
laws of the State of California shall be deemed to be the laws relating to permissible rates of interest on commercial loans) (the “Maximum Rate”). If a court of competent jurisdiction shall finally determine that Borrower has actually
paid to Lenders an amount of interest in excess of the amount that would have been payable if all of the Secured Obligations had at all times borne interest at the Maximum Rate, then such excess interest actually paid by Borrower shall be applied as
follows: first, to the payment of the Secured Obligations consisting of the outstanding principal; second, after all principal is repaid, to the payment of Lenders’ accrued interest, costs, expenses, professional fees and any other Secured
Obligations; and third, after all Secured Obligations are repaid, the excess (if any) shall be refunded to Borrower. 
 2.3 Default
Interest. In the event any payment is not paid on the scheduled payment date, other than due to a failure of any ACH debit due solely to an administrative or operational error of Agent or Lender or Borrower’s bank if Borrower had the funds
to make the payment when due and makes the payment within three (3) Business Days following Borrower’s knowledge of such failure to pay, an amount equal to four percent (4%) of the past due amount shall be payable on demand. In addition,
upon the occurrence and during the continuation of an Event of Default hereunder, all Secured Obligations, including principal, interest, compounded interest, and professional fees, shall bear interest at a rate per annum equal to the rate set forth
in Section 2.1(c), plus four percent (4%) per annum. In the event any interest is not paid when due hereunder, delinquent interest shall be added to principal and shall bear interest on interest, compounded at the rate set forth in
Section 2.1(c) or this Section 2.3, as applicable. 
 2.4 Prepayment. At its option, Borrower may at
any time prepay all or a portion of the outstanding Advances by paying the entire principal balance (or such portion thereof), all accrued and unpaid interest thereon, together with a prepayment charge equal to the following percentage of the
principal amount of the Advance being prepaid: for any prepayment of an Advance on or prior to the one year anniversary of the Closing Date, 3.0%; after the one-year anniversary of the Closing Date, through the
two-year anniversary of the Closing Date, 2.0%; and after the two-year anniversary of the Closing Date, 1.0% (each, a “Prepayment Charge”). Borrower agrees
that the Prepayment Charge is a reasonable calculation of Lenders’ lost profits in view of the difficulties and impracticality of determining actual damages resulting from an early repayment of the Advances. Borrower shall prepay the
outstanding amount of all principal and accrued interest through the prepayment date and the Prepayment Charge upon the occurrence of a Change in Control. Notwithstanding the foregoing, Agent and Lenders agree to waive the Prepayment Charge if Agent
and Lenders or their respective Affiliates (in their sole and absolute discretion) agree in writing to refinance the Advances prior to the Term Loan Maturity Date. Any amounts paid under this Section shall be applied by Agent to the then unpaid
amount of any Secured Obligations (including principal and interest) pro rata to all scheduled amounts owed. For the avoidance of doubt, if a payment hereunder becomes due and payable on a day that is not a Business Day, the due date thereof shall
be the immediately preceding Business Day. 
 2.5 End of Term Charge. On the earliest to occur of (i) the Term Loan
Maturity Date, (ii) the date that Borrower prepays the outstanding Secured Obligations (other than any inchoate indemnity obligations and any other obligations which, by their terms, are to survive the termination of this Agreement) in full, or
(iii) the date that the Secured Obligations become due and payable in full pursuant to the terms of this Agreement, Borrower shall pay Lenders a charge of 4.85% of the aggregate original principal amount of the Term Loan Advances made hereunder (the
“End of Term Charge”). Notwithstanding the required payment date of such End of Term Charge, the applicable pro rata portion of the End of Term Charge shall be deemed earned by Lenders on the date the applicable Term Loan Advance is made.
For the avoidance of doubt, if a payment hereunder becomes due and payable on a day that is not a Business Day, the due date thereof shall be the immediately preceding Business Day. 

  
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 2.6 Pro Rata Treatment. Each payment (including prepayment) on account of any fee and
any reduction of the Term Loan Advances shall be made pro rata according to the Term Commitments of the relevant Lenders. 
 2.7 Taxes;
Increased Costs. Borrower, Agent and Lenders each hereby agree to the terms and conditions set forth on Addendum 1 attached hereto. 

2.8 Treatment of Prepayment Charge and End of Term Charge. Borrower agrees that any Prepayment Charge and any End of Term Charge
payable shall be presumed to be the liquidated damages sustained by each Lender as the result of the early termination, and Borrower agrees that it is reasonable under the circumstances currently existing and existing as of the Closing Date. The
Prepayment Charge and the End of Term Charge shall also be payable in the event the Secured Obligations (and/or this Agreement) are satisfied or released by foreclosure (whether by power of judicial proceeding), deed in lieu of foreclosure, or by
any other means. Each Loan Party expressly waives (to the fullest extent it may lawfully do so) the provisions of any present or future statute or law that prohibits or may prohibit the collection of the foregoing Prepayment Charge and End of Term
Charge in connection with any such acceleration. Borrower agrees (to the fullest extent that each may lawfully do so): (a) each of the Prepayment Charge and the End of Term Charge is reasonable and is the product of an arm’s length transaction
between sophisticated business people, ably represented by counsel; (b) each of the Prepayment Charge and the End of Term Charge shall be payable notwithstanding the then prevailing market rates at the time payment is made;
(c) there has been a course of conduct between Lenders and Borrower giving specific consideration in this transaction for such agreement to pay the Prepayment Charge and the End of Term Charge as a charge (and not interest) in the event
of prepayment or acceleration; and (d) Borrower shall be estopped from claiming differently than as agreed to in this paragraph. Borrower expressly acknowledges that its agreement to pay each of the Prepayment Charge and the End of Term
Charge to Lenders as herein described was on the Closing Date and continues to be a material inducement to Lenders to provide the Term Loan Advances. 

SECTION 3 
 SECURITY
INTEREST 
 3.1 Grant of Security Interest. As security for the prompt and complete payment when due (whether on the payment
dates or otherwise) of all the Secured Obligations, Borrower grants to Agent a security interest in all of Borrower’s right, title, and interest in, to and under all of Borrower’s personal property and other assets including without
limitation the following (except as set forth herein) whether now owned or hereafter acquired (collectively, the “Collateral”): (a) Receivables; (b) Equipment; (c) Fixtures; (d) General Intangibles,
(e) Inventory; (f) Investment Property; (g) Deposit Accounts; (h) Cash; (i) Goods; and all other tangible and intangible personal property of Borrower whether now or hereafter owned or
existing, leased, consigned by or to, or acquired by, Borrower and wherever located, and any of Borrower’s property in the possession or under the control of Agent; and, to the extent not otherwise included, all Proceeds of each of the
foregoing and all accessions to, substitutions and replacements for, and rents, profits and products of each of the foregoing; provided, however, that the Collateral shall include all Accounts and General Intangibles that consist of rights to
payment and proceeds from the sale, licensing or disposition of all or any part, or rights in, the Intellectual Property (the “Rights to Payment”). Notwithstanding the foregoing, if a judicial authority (including a U.S. Bankruptcy
Court) holds that a security interest in the underlying Intellectual Property is necessary to have a security interest in the Rights to Payment, then the Collateral shall automatically, and effective as of the date of this Agreement, include the
Intellectual Property to the extent necessary to permit perfection of Agent’s security interest in the Rights to Payment. 
 3.2
Excluded Collateral. Notwithstanding the broad grant of the security interest set forth in Section 3.1, above, the Collateral shall not include (a) any Intellectual Property, (b) more than 65% of the presently existing
and hereafter arising issued and outstanding Equity Interests owned by Borrower of any Foreign Subsidiary or Foreign Subsidiary Holding Company which Equity Interests entitle the holder thereof to vote for directors or any other matter, (c)
nonassignable licenses or contracts, including without limitation any licenses described in clause (b) of the defined term “Permitted Transfers”, which by their terms require the consent of the licensor thereof or
another party (but only to the extent such prohibition on transfer is enforceable under applicable law, including, without limitation, Sections 9406, 9407 and 9408 of the UCC), provided further, that upon the termination of such
prohibition or such consent being provided with respect to any license or contract, such license or contract shall automatically be included in the Collateral, (d) property for which the granting of a security interest therein is


  
 16 













 
contrary to applicable law, provided that upon the cessation of any such restriction or prohibition, such property shall automatically be included in the Collateral; (e) any Excluded
Accounts; and (f) any cash collateral deposit subject to a Permitted Lien hereunder, if the grant of a security interest with respect to such property pursuant to this Agreement would be prohibited by the agreement creating such
Permitted Lien or would otherwise constitute a default thereunder or create a right of termination a party thereto (other than Borrower), provided that upon the termination and release of such cash collateral, such property shall automatically be
included in the Collateral. 
 SECTION 4 

CONDITIONS PRECEDENT TO LOAN 

The obligations of Lenders to make the Loan hereunder are subject to the satisfaction by Borrower of the following conditions: 

4.1 Initial Advance. On or prior to the Closing Date, Borrower shall have delivered to Agent the following: 

(a) duly executed copies of the Loan Documents, (except to the extent permitted to be delivered post-closing in accordance with
Section 4.4) Account Control Agreements, and all other documents and instruments reasonably required by Agent to effectuate the transactions contemplated hereby or to create and perfect the Liens of Agent with respect to
all Collateral., in all cases in form and substance reasonably acceptable to Agent; 
 (b) a legal opinion of Borrower’s
counsel in form and substance reasonably acceptable to Agent; 
 (c) a copy of resolutions of Borrower’s Board
evidencing approval of the Loan and other transactions evidenced by the Loan Documents, certified by an officer of Borrower; 

(d) copies of the Charter of Borrower, certified by the Secretary of State of the applicable jurisdiction of organization and
the other Organizational Documents, as amended through the Closing Date, of Borrower certified by an officer of Borrower; 

(e) certificates of good standing for Borrower from the applicable jurisdiction of organization and similar certificates from
all other jurisdiction in which Borrower does business and where the failure to be qualified could have a Material Adverse Effect; 

(f) payment of the Due Diligence Fee, Initial Facility Charge and reimbursement of Agent’s and Lenders’ current
expenses reimbursable pursuant to this Agreement, which amounts may be deducted from the initial Advance; 
 (g) all
certificates of insurance, endorsements, and copies of each insurance policy required pursuant to Section 6.2; and 

(h) such other documents as Agent may reasonably request. 

4.2 All Advances. On each Advance Date: 

(a) Agent shall have received (i) an Advance Request for the relevant Advance as required by
Section 2.1(b), duly executed by Borrower’s Chief Executive Officer or Chief Financial Officer, and (ii) any other documents Agent may reasonably request. 

(b) The representations and warranties set forth in this Agreement shall be true and correct in all material respects on and as
of the Advance Date with the same effect as though made on and as of such date, except to the extent such representations and warranties expressly relate to an earlier date. 

  
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 (c) Borrower shall be in compliance with all the terms and provisions set
forth herein and in each other Loan Document on its part to be observed or performed, and at the time of and immediately after such Advance no Event of Default shall have occurred and be continuing. 

(d) With respect to any Advance pursuant to Tranche III, Borrower shall have paid the Tranche III Facility Charge. 

(e) With respect to any Advance pursuant to Tranche III, Lenders’ investment committee shall have approved the requested
Advances, as contemplated by Section 2.1(a)(iii). 
 Each Advance Request shall be deemed to
constitute a representation and warranty by Borrower on the relevant Advance Date as to the matters specified in subsections (b) and (c) of this Section 4.2 and as to the
matters set forth in the Advance Request. 
 4.3 No Default. As of the Closing Date and each Advance Date, (i) no fact or
condition exists that could (or could, with the passage of time, the giving of notice, or both) constitute an Event of Default and (ii) no event that has had or could reasonably be expected to have a Material Adverse Effect has occurred
and is continuing. 
 4.4 Post-Closing Deliveries. Borrower shall: 

(a) deliver to Agent, in form and substance satisfactory to Agent, an Account Control Agreement with respect to Borrower’s
Deposit Accounts maintained with Bank of America within thirty (30) days of the Closing Date (or such longer period as the Agent may agree in its sole discretion); and 

(b) use its commercially reasonable efforts to deliver to Agent, in form and substance satisfactory to Agent, a landlord
waivers with respect to Borrower’s leased location at 200 Sidney Street, Cambridge, MA 02139. 
 SECTION 5 

REPRESENTATIONS AND WARRANTIES 

Borrower represents and warrants that: 

5.1 Organizational Status. Borrower is duly organized, legally existing and in good standing under the laws of its jurisdiction of
organization, and is duly qualified as a foreign corporation, limited liability company or partnership, as the case may be, in all jurisdictions in which the nature of its business or location of its properties require such qualifications and where
the failure to be qualified could reasonably be expected to have a Material Adverse Effect. Borrower’s present name, former names (if any), locations, place of formation, tax identification number, organizational identification number and other
information are correctly set forth in Exhibit B, as may be updated by Borrower in a written notice (including any Compliance Certificate) provided to Agent after the Closing Date in accordance with this Agreement (including in any
Compliance Certificate). 
 5.2 Collateral. Borrower owns the Collateral and the Intellectual Property free of all Liens, except for
Permitted Liens. Borrower has the power and authority to grant to Agent a Lien in the Collateral as security for the Secured Obligations. 

5.3 Consents. Borrower’s execution, delivery and performance of this Agreement and all other Loan Documents to which it is a
party, (i) have been duly authorized by all necessary action in accordance with Borrower’s Organizational Documents and applicable law, (ii) will not result in the creation or imposition of any Lien upon the Collateral, other
than Permitted Liens, (iii) do not violate (A) any provisions of Borrower’s Organizational Documents, or (B) any, law, regulation, order, injunction, judgment, decree or writ to which Borrower is subject in
any material respect, and (iv) do not violate any material contract or agreement or require the consent or approval of any other Person which has not already been obtained. The individual or individuals executing the Loan Documents on
behalf of Borrower are duly authorized to do so. 

  
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 5.4 Material Adverse Effect. No Material Adverse Effect has occurred and is
continuing, and Borrower is not aware of any event or circumstance that is likely to occur that is reasonably expected to result in a Material Adverse Effect. 

5.5 Actions Before Governmental Authorities. There are no actions, suits or proceedings at law or in equity or by or before any
governmental authority now pending or, to the knowledge of Borrower, threatened against or affecting Borrower or its property, that is reasonably expected to result in a Material Adverse Effect. 

5.6 Laws. 

(a) Neither Borrower nor any of its Subsidiaries is in violation of any law, rule or regulation, or in default with respect to
any judgment, writ, injunction or decree of any governmental authority, where such violation or default is reasonably expected to result in a Material Adverse Effect. Borrower is not in default under (i) any provision of any agreement or
instrument evidencing material Indebtedness in any material respect, or (ii) any other agreement to which it is a party or by which it is bound that is reasonably expected to result in a Material Adverse Effect 

(b) Neither Borrower nor any of its Subsidiaries is an “investment company” or a company “controlled” by an
“investment company” under the Investment Company Act of 1940, as amended. Neither Borrower nor any of its Subsidiaries is engaged as one of its important activities in extending credit for margin stock (under Regulations X, T and U of the
Federal Reserve Board of Governors). Borrower and each of its Subsidiaries has complied in all material respects with the Federal Fair Labor Standards Act. Neither Borrower nor any of its Subsidiaries is a “holding company” or an
“affiliate” of a “holding company” or a “subsidiary company” of a “holding company” as each term is defined and used in the Public Utility Holding Company Act of 2005. Neither Borrower’s nor any of its
Subsidiaries’ properties or assets has been used by Borrower or such Subsidiary or, to Borrower’s knowledge, by previous Persons, in disposing, producing, storing, treating, or transporting any hazardous substance other than in material
compliance with applicable laws. Borrower and each of its Subsidiaries has obtained all consents, approvals and authorizations of, made all declarations or filings with, and given all notices to, all governmental authorities that are necessary to
continue their respective businesses as currently conducted. 
 (c) None of Borrower, any of its Subsidiaries, or, to the
knowledge of Borrower, any of Borrower’s or its Subsidiaries’ Affiliates or any of their respective agents acting or benefiting in any capacity in connection with the transactions contemplated by this Agreement is (i) in violation of
any Anti-Terrorism Law, (ii) engaging in or conspiring to engage in any transaction that evades or avoids, or has the purpose of evading or avoiding or attempts to violate, any of the prohibitions set forth in any Anti-Terrorism Law, or
(iii) is a Blocked Person. None of Borrower, any of its Subsidiaries, or to the knowledge of Borrower, any of their Affiliates or agents, acting or benefiting in any capacity in connection with the transactions contemplated by this Agreement,
(x) conducts any business or engages in making or receiving any contribution of funds, goods or services to or for the benefit of any Blocked Person, or (y) deals in, or otherwise engages in any transaction relating to, any property or
interest in property blocked pursuant to Executive Order No. 13224, any similar executive order or other Anti-Terrorism Law. None of the funds to be provided under this Agreement shall be used, directly or indirectly, (a) for any
activities in violation of any applicable anti-money laundering, economic sanctions and anti-bribery laws and regulations laws and regulations or (b) for any payment to any governmental official or employee, political party, official of a
political party, candidate for political office, or anyone else acting in an official capacity, in order to obtain, retain or direct business or obtain any improper advantage, in violation of the United States Foreign Corrupt Practices Act of 1977,
as amended. 
 5.7 Information Correct and Current. No information, report, Advance Request, financial statement, exhibit or schedule
furnished, by or on behalf of Borrower to Agent in connection with any Loan Document or included therein or delivered pursuant thereto contained, or, when taken as a whole, contains, or shall contain, any material misstatement of fact or, when taken
together with all other such information or documents, omitted, omits or shall omit to state any material fact necessary to make the statements therein, in the light of the circumstances under which they were, are or shall be made, not materially
misleading at the time such statement was made or deemed made. Additionally, any and all financial or business projections provided by a Borrower to Agent, whether 

  
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prior to or after the Closing Date, shall be (i) provided in good faith and based on the most current data and information available to Borrower, and (ii) the most current of
such projections provided to Borrower’s Board (it being understood that the projections and forecasts provided by Borrower in good faith and based upon reasonable assumptions are not viewed as facts, that such projections are subject to
significant uncertainties and contingencies, many of which are beyond the control of Borrower, that no assurance is given that any particular projections will be realized, and that actual results during the period or periods covered by such
projections and forecasts may differ from the projected or forecasted results). 
 5.8 Tax Matters. Except as set forth on
Schedule 5.8, (a) Borrower and its Subsidiaries have filed all federal and state income Tax returns and other material Tax returns that they are required to file, (b) Borrower and its Subsidiaries have duly paid all federal and state
income Taxes and other material Taxes or installments thereof that they are required to pay, except Taxes being contested in good faith by appropriate proceedings and for which Borrower and its Subsidiaries maintain adequate reserves in accordance
with GAAP, and (c) to the best of Borrower’s knowledge, no proposed or pending Tax assessments, deficiencies, audits or other proceedings with respect to Borrower or any Subsidiary have had, or could reasonably be expected to have,
individually or in the aggregate, a Material Adverse Effect. 
 5.9 Intellectual Property Claims. Except for Permitted Liens,
Borrower is the sole owner of, or otherwise has the right to use, the Intellectual Property material to Borrower’s business. Except as described on Schedule 5.11, each of the material Copyrights, Trademarks and Patents is valid and
enforceable, no material part of the Intellectual Property has been judged invalid or unenforceable, in whole or in part, and, to Borrower’s knowledge, no claim has been made to Borrower that any material part of the Intellectual Property
violates the rights of any third party. Exhibit C is a true, correct and complete list of each of Borrower’s Patents, registered Trademarks, registered Copyrights, and material agreements under which Borrower licenses Intellectual
Property from third parties (other than shrink-wrap software licenses), together with application or registration numbers, as applicable, owned by Borrower or any Subsidiary, in each case as of the Closing Date. Borrower is not in breach of, nor has
Borrower failed to perform any obligations under, any of the foregoing contracts, licenses or agreements, except as could not reasonably be expected to result, individually or in the aggregate, in a Material Adverse Effect and, to Borrower’s
knowledge, no third party to any such contract, license or agreement is in breach thereof or has failed to perform any obligations thereunder, except as could not reasonably be expected to result, individually or in the aggregate, in a Material
Adverse Effect. 
 5.10 Intellectual Property. 

(a) Borrower has all material rights with respect to Intellectual Property necessary or material in the operation or conduct of
Borrower’s business as currently conducted and proposed to be conducted by Borrower. Without limiting the generality of the foregoing, and in the case of Licenses, except for restrictions that are unenforceable under Division 9 of the UCC or
restrictions that are permitted hereunder, Borrower has the right, to the extent required to operate Borrower’s business, to freely transfer, license or assign Intellectual Property owned by Borrower and necessary or material in the operation
or conduct of Borrower’s business as currently conducted and proposed to be conducted by Borrower, without condition, restriction or payment of any kind (other than license payments in the ordinary course of business) to any third party.
Borrower owns or has the right to use, pursuant to valid licenses, all software development tools, library functions, compilers and all other third-party software and other items that are material to Borrower’s business and used in the design,
development, promotion, sale, license, manufacture, import, export, use or distribution of Products except customary covenants in license agreements, joint venture or strategic alliances (to the extent such joint ventures or strategic alliances are
Permitted Investments) and equipment leases where Borrower is the licensee or lessee. 
 (b) No material software or other
material materials used by Borrower or any of its Subsidiaries (or used in any Products or any Subsidiaries’ products) are subject to an open-source or similar license (including but not limited to the General Public License, Lesser General
Public License, Mozilla Public License, or Affero License) in a manner that would cause such software or other materials to have to be (i) distributed to third parties at no charge or a minimal charge (royalty-free basis); (ii) licensed to
third parties to modify, make derivative works based on, decompile, disassemble, or reverse engineer; or (iii) used in a manner that does could require disclosure or distribution in source code form. 

  
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 5.11 Products. Except as set forth on Schedule 5.11, no material Intellectual
Property owned by Borrower or Product has been or is subject to any actual or, to the knowledge of Borrower, threatened litigation, proceeding (including any proceeding in the United States Patent and Trademark Office or any corresponding foreign
office or agency) or outstanding decree, order, judgment, settlement agreement or stipulation that restricts in any manner Borrower’s use, transfer or licensing thereof or that may affect the validity, use or enforceability thereof. There is no
decree, order, judgment, agreement, stipulation, arbitral award or other provision entered into in connection with any litigation or proceeding that obligates Borrower to grant licenses or ownership interest in any future Intellectual Property
related to the operation or conduct of the business of Borrower or Products. Borrower has not received any written notice or claim, or, to the knowledge of Borrower, oral notice or claim, challenging or questioning Borrower’s ownership in any
material Intellectual Property (or written notice of any claim challenging or questioning the ownership in any licensed Intellectual Property of the owner thereof) or suggesting that any third party has any claim of legal or beneficial ownership
with respect thereto nor, to Borrower’s knowledge, is there a reasonable basis for any such claim. To Borrower’s knowledge, neither Borrower’s use of its material Intellectual Property nor the production and sale of Products
materially infringes the Intellectual Property or other rights of others.  
 5.12 Financial Accounts. Exhibit D,
as may be updated by Borrower in a written notice provided to Agent after the Closing Date, is a true, correct and complete list of (a) all banks and other financial institutions at which Borrower or any Subsidiary maintains Deposit Accounts
and (b) all institutions at which Borrower or any Subsidiary maintains an account holding Investment Property, and such exhibit correctly identifies the name, address and telephone number of each bank or other institution, the name in
which the account is held, a description of the purpose of the account, and the complete account number therefor. 
 5.13 Employee
Loans. Other than loans constituting Permitted Investments, Borrower has no outstanding loans to any employee, officer or director of Borrower nor has Borrower guaranteed the payment of any loan made to an employee, officer or director of
Borrower by a third party. 
 5.14 Subsidiaries. Borrower does not own any stock, partnership interest or other securities of any
Person, except for Permitted Investments. Attached as Schedule 5.14, as may be updated by Borrower in a written notice provided after the Closing Date, is a true, correct and complete list of each Subsidiary. 

SECTION 6 
 INSURANCE;
INDEMNIFICATION 
 6.1 Coverage. Borrower shall cause to be carried and maintained commercial general liability insurance
covering Borrower and each of its Subsidiaries, on an occurrence form, against risks customarily insured against in Borrower’s line of business. Such risks shall include the risks of bodily injury, including death, property damage, personal
injury, advertising injury, and contractual liability per the terms of the indemnification agreement found in Section 6.3. Borrower shall maintain a minimum of $2,000,000 of commercial general liability insurance for each occurrence.
Borrower maintains and shall continue to maintain a minimum of $2,000,000 of directors’ and officers’ insurance for each occurrence and $5,000,000 in the aggregate. So long as there any Secured Obligations outstanding, Borrower shall
maintain insurance upon the business and assets of Borrower and its Subsidiaries, insuring against all risks of physical loss or damage howsoever caused, in an amount not less than the full replacement cost of the Collateral, provided that such
insurance may be subject to standard exceptions and deductibles. . If Borrower fails to obtain the insurance called for by this Section 6.1 or fails to pay any premium thereon or fails to pay any other amount which Borrower is obligated
to pay under this Agreement or any other Loan Document or which may be required to preserve the Collateral, Agent may obtain such insurance or make such payment, and all amounts so paid by Agent are immediately due and payable, bearing interest at
the then highest rate applicable to the Secured Obligations, and secured by the Collateral. Agent will make reasonable efforts to provide Borrower with notice of Agent obtaining such insurance at the time it is obtained or within a reasonable time
thereafter. No payments by Agent are deemed an agreement to make similar payments in the future or Agent’s waiver of any Event of Default. 

  
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 6.2 Certificates. Borrower shall deliver to Agent certificates of insurance that
evidence compliance with its insurance obligations in Section 6.1 and the obligations contained in this Section 6.2. Borrower’s insurance certificate shall reflect Agent (shown as “Hercules Capital, Inc., as Agent,
and its successors and/or assigns”) as an additional insured for commercial general liability, and a lenders loss payable for property insurance and additional insured for liability insurance for any future insurance that Borrower may acquire
from such insurer. Attached to the certificates of insurance will be additional insured endorsements for liability and lender’s loss payable endorsements for all risk property damage insurance. All certificates of insurance shall provide for a
minimum of thirty (30) days’ advance written notice to Agent of cancellation (other than cancellation for non-payment of premiums, for which ten (10) days’ advance written notice
shall be sufficient) or any other change adverse to Agent’s interests. Any failure of Agent to scrutinize such insurance certificates for compliance is not a waiver of any of Agent’s rights, all of which are reserved. Upon Agent’s
reasonable request, Borrower shall provide Agent with copies of each insurance policy, and upon entering or amending any insurance policy required hereunder, Borrower shall provide Agent with copies of such policies and shall promptly deliver to
Agent updated insurance certificates with respect to such policies. 
 6.3 Indemnity. Borrower agrees to indemnify and hold Agent,
Lenders and their officers, directors, employees, agents, in-house attorneys, representatives and shareholders (each, an “Indemnified Person”) harmless from and against any and all claims, costs,
expenses, damages and liabilities (including such claims, costs, expenses, damages and liabilities based on liability in tort, including strict liability in tort), including reasonable attorneys’ fees and disbursements and other costs of
investigation or defense (including those incurred upon any appeal) (collectively, “Liabilities”), that may be instituted or asserted against or incurred by such Indemnified Person as the result of credit having been extended, suspended or
terminated under this Agreement and the other Loan Documents or the administration of such credit, or in connection with or arising out of the transactions contemplated hereunder and thereunder, or any actions or failures to act in connection
therewith, or arising out of the disposition or utilization of the Collateral, excluding in all cases Liabilities to the extent resulting solely from any Indemnified Person’s gross negligence or willful misconduct. This Section 6.3
shall not apply with respect to Taxes other than any Taxes that represent losses, claims, damages, etc. arising from any non-Tax claim. In no event shall any Indemnified Person be liable on any theory of liability for any special, indirect,
consequential or punitive damages (including any loss of profits, business or anticipated savings). This Section 6.3 shall survive the repayment of indebtedness under, and otherwise shall survive the expiration or other termination of,
the Loan Agreement, in each case subject to the applicable statute of limitations. 
 SECTION 7 

COVENANTS 
 Borrower
agrees as follows: 
 7.1 Financial Reports. Borrower shall furnish to Agent the financial statements and reports listed hereinafter
(the “Financial Statements”): 
 (a) as soon as practicable (and in any event within 30 days) after the end of each
month, unaudited interim and year-to-date financial statements as of the end of such month (prepared on a consolidated basis), including balance sheet and related
statement of income accompanied by a report detailing any material contingencies (including the commencement of any material litigation by or against Borrower) or any other occurrence that could reasonably be expected to have a Material Adverse
Effect, all certified by Borrower’s Chief Executive Officer or Chief Financial Officer to the effect that they have been prepared in accordance with GAAP, (i) except for the absence of footnotes, (ii) subject to normal year-end adjustments, and (iii) except for certain non-cash items that are customarily included in quarterly and annual financial statements; 

(b) as soon as practicable (and in any event within 45 days) after the end of each calendar quarter, unaudited interim and year-to-date financial statements as of the end of such calendar quarter (prepared on a consolidated basis, if applicable), including balance sheet and related statements of
income and cash flows accompanied by a report detailing any material contingencies (including the commencement of any material litigation by or against Borrower) or any other occurrence that could reasonably be expected to have a Material Adverse
Effect, certified by Borrower’s Chief Executive Officer or Chief Financial Officer or another authorized executive of Borrower to the effect that they have been prepared in accordance with GAAP, (i) except for the absence of footnotes, and
(ii) subject to normal year-end adjustments; 

  
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 (c) as soon as practicable (and in any event within 90 days) after the end
of each fiscal year, unqualified (other than as to going concern qualification) audited financial statements as of the end of such year (prepared on a consolidated and consolidating basis, if applicable), including balance sheet and related
statements of income and cash flows, and setting forth in comparative form the corresponding figures for the preceding fiscal year, certified by a firm of independent certified public accountants selected by Borrower and reasonably acceptable to
Agent, accompanied by any management report from such accountants; 
 (d) as soon as practicable (and in any event within 30
days) after the end of each month, a Compliance Certificate in the form of Exhibit E; 
 (e) as
soon as practicable (and in any event within 30 days) after the end of each month, a report showing agings of accounts receivable and accounts payable; 

(f) promptly after the sending or filing thereof, as the case may be, copies of any proxy statements, financial statements or
reports that Borrower has made available to holders of its preferred stock, and copies of any regular, periodic and special reports or registration statements that Borrower files with the Securities and Exchange Commission or any governmental
authority that may be substituted therefor, or any national securities exchange; 
 (g) promptly following each meeting of
the Board, copies of all presentation materials that Borrower provides to its directors in connection with meetings of the board of directors, provided that in all cases Borrower may exclude any information or materials related to executive
compensation, confidential information, any attorney-client privileged information and any information that would raise a conflict of interest with Agent or Lenders; 

(h) financial and business projections promptly following their approval by Borrower’s Board, and in any event, 60 days
after the end of Borrower’s fiscal year, as well as budgets, operating plans and other financial information reasonably requested by Agent; 

(i) insurance renewal statements, annually or otherwise upon promptly upon renewal of insurance policies required to be
maintained in accordance with Section 6.1, and 
 (j) prompt (but in any event no more than 3
Business Days) notice if Borrower or any Subsidiary has knowledge that Borrower, or any Subsidiary or controlled Affiliate of Borrower, is listed on the OFAC Lists or (a) is convicted on, (b) pleads nolo contendere to, (c) is
indicted on, or (d) is arraigned and held over on charges involving money laundering or predicate crimes to money laundering. 

Borrower shall not make any change in its (a) accounting policies or reporting practices (other than as permitted under GAAP or pursuant
to applicable securities laws or regulations of the SEC), or (b) fiscal years or fiscal quarters. The fiscal year of Borrower shall end on December 31. 

The executed Compliance Certificate, all Financial Statements required to be delivered pursuant to clauses (a),
(b) and (c) above shall be sent via e-mail to financialstatements@htgc.com with a copy to legal@htgc.com and kkosofsky@htgc.com, provided, that if e-mail is not
available or sending such Financial Statements via e-mail is not possible, they shall be faxed to Agent at: (650) 473-9194, attention Account Manager: Seres
Therapeutics, Inc. 
 Notwithstanding the foregoing, documents required to be delivered hereunder (to the extent any such
documents are included in materials otherwise filed with the SEC) may be delivered electronically and if so delivered, shall be deemed to have been delivered on the date on which Borrower makes such documents or materials publically available. 

  
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 7.2 Management Rights. Borrower shall permit any representative that Agent or Lenders
authorizes, including its attorneys and accountants, to inspect the Collateral and examine and make copies and abstracts of the books of account and records of Borrower at reasonable times and upon reasonable notice during normal business hours;
provided, however, that so long as no Event of Default has occurred and is continuing, such examinations shall be limited to no more often than once per fiscal year. In addition, any such representative shall have the right to meet with management
and officers of Borrower to discuss such books of account and records at reasonable times and upon reasonable notice. In addition, Agent or Lenders shall be entitled at reasonable times and intervals to consult with and advise the management and
officers of Borrower concerning significant business issues affecting Borrower. Such consultations shall not unreasonably interfere with Borrower’s business operations. The parties intend that the rights granted Agent and Lenders shall
constitute “management rights” within the meaning of 29 C.F.R. Section 2510.3-101(d)(3)(ii), but that any advice, recommendations or participation by Agent or Lenders with respect to any business issues shall not be deemed to give
Agent or any Lender, nor be deemed an exercise by Agent or any Lender of, control over Borrower’s management or policies. 
 7.3
Further Assurances. Borrower shall, and shall cause each other Loan Party to, from time to time execute, deliver and file, alone or with Agent, any financing statements, security agreements, collateral assignments, notices, control
agreements, promissory notes or other documents to perfect or give the highest priority to Agent’s Lien on the Collateral or otherwise evidence Agent’s rights herein, in each case as reasonably requested by Agent. Borrower shall, from time
to time procure any instruments or documents as may be reasonably requested by Agent, and take all further action that may be necessary, or that Agent may reasonably request, to perfect and protect the Liens granted hereby or pursuant to applicable
Loan Documents. In addition, and for such purposes only, Borrower hereby authorizes Agent to execute and deliver on behalf of Borrower and to file such financing statements (including an indication that the financing statement covers “all
assets or all personal property” of Borrower in accordance with Section 9-504 of the UCC), without the signature of Borrower, either in Agent’s name or in the name of Agent as agent and attorney-in-fact for Borrower. Borrower shall in good faith and in its reasonable commercial discretion, in each case subject to the terms of this Agreement, protect and defend its title to the Collateral and
Agent’s Lien thereon against all Persons claiming any interest adverse to Borrower or Agent other than Permitted Liens. 
 7.4
Indebtedness. Borrower shall not create, incur, assume, guarantee or be or remain liable with respect to any Indebtedness, and shall not permit any Subsidiary to do so, other than Permitted Indebtedness, or prepay any Indebtedness or take any
actions which impose on Borrower an obligation to prepay any Indebtedness, except (a) for the conversion of Indebtedness into equity securities and the payment of cash in lieu of fractional shares in connection with such conversion,
(b) for purchase money Indebtedness pursuant to its then applicable payment schedule or with other purchase money Indebtedness permitted hereunder, (c) for prepayment (i) by any Loan Party or Subsidiary of
intercompany Indebtedness owed to Borrower, or (ii) by any Subsidiary that is not a Loan Party of intercompany Indebtedness owed by such Subsidiary to another Subsidiary that is not a Loan Party, or (d) as may be permitted
under any Subordination Agreement, (e) as otherwise permitted hereunder or approved in writing by Agent, and (f) Permitted Indebtedness with the proceeds of other Permitted Indebtedness. 

Notwithstanding anything to the contrary in the foregoing, the issuance of, performance of obligations under (including any payments of
interest), and conversion, exercise, repurchase, redemption (including, for the avoidance of doubt, a required repurchase in connection with the redemption of Permitted Convertible Debt upon satisfaction of a condition related to the stock price of
Borrower’s common stock), settlement or early termination or cancellation of (whether in whole or in part and including by netting or set-off) (in each case, whether in cash, common stock of Borrower or,
following a merger event or other change of the common stock of Borrower, other securities or property), or the satisfaction of any condition that would permit or require any of the foregoing, any Permitted Convertible Debt shall not constitute a
prepayment of Indebtedness by Borrower for the purposes of this Section 7.4 provided that principal payments in cash (other than cash in lieu of fractional shares) shall only be allowed with respect to any repurchase in
connection with the redemption of Permitted Convertible Debt upon satisfaction of a condition related to the stock price of Borrower’s common stock if the Redemption Conditions are satisfied in respect of such redemption and at all times after
such redemption. 
 7.5 Collateral. Borrower shall at all times keep the Collateral, the Intellectual Property and all other property
and assets used in Borrower’s business or in which Borrower now or hereafter holds any interest free and clear from Liens whatsoever (except for Permitted Liens), and shall give Agent prompt written notice of any legal process that is
reasonably likely to result in damages, expenses or liabilities in excess of $500,000 affecting the Collateral, the Intellectual Property, such other property or assets, or any Liens thereon, provided however, that the


  
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Collateral and such other property and assets may be subject to Permitted Liens except that there shall be no Liens whatsoever on Intellectual Property. Borrower shall not agree with any Person
other than Agent or Lenders not to encumber its property other than in connection with Permitted Liens. Borrower shall not enter into or suffer to exist or become effective any agreement that prohibits or limits the ability of Borrower to create,
incur, assume or suffer to exist any Lien upon any of its property (including Intellectual Property), whether now owned or hereafter acquired, to secure its obligations under the Loan Documents to which it is a party other than (a) this
Agreement and the other Loan Documents, (b) any agreements governing any purchase money Liens or capital lease obligations otherwise permitted hereby (in which case, any prohibition or limitation shall only be effective against the
assets financed thereby) and (c) customary restrictions on the assignment of leases, licenses and other agreements. Borrower shall cause each of its Subsidiaries to protect and defend such Subsidiary’s title to its assets from and
against all Persons claiming any interest adverse to such Subsidiary, and Borrower shall cause each of its Subsidiaries at all times to keep such Subsidiary’s property and assets free and clear from Liens whatsoever (except for Permitted
Liens), and shall give Agent prompt written notice of any legal process that is reasonably likely to result in damages, expenses or liabilities in excess of $500,000.  

7.6 Investments. Borrower shall not, directly or indirectly acquire or own, or make any Investment in or to any Person, nor permit any
of its Subsidiaries so to do, other than Permitted Investments. 
 Notwithstanding the foregoing, and for the avoidance of doubt, this
Section 7.6 shall not prohibit the conversion by holders of (including any cash payment upon conversion), or required payment of any principal or premium on (including, for the avoidance of doubt, in respect of a required
repurchase in connection with the redemption of Permitted Convertible Debt upon satisfaction of a condition related to the stock price of Borrower’s common stock) or required payment of any interest with respect to, any Permitted Convertible
Debt in each case, in accordance with the terms of the indenture governing such Permitted Convertible Debt, provided that principal payments in cash (other than cash in lieu of fractional shares) shall be allowed with respect to any repurchase in
connection with the redemption of Permitted Convertible Debt upon satisfaction of a condition related to the stock price of Borrower’s common stock only if the Redemption Conditions are satisfied in respect of such redemption and at all times
after such redemption.. 
 Notwithstanding the foregoing, Borrower may repurchase, exchange or induce the conversion of Permitted
Convertible Debt by delivery of shares of Borrower’s common stock and/or a different series of Permitted Convertible Debt and/or by payment of cash (in an amount that does not exceed the proceeds received by Borrower from the substantially
concurrent issuance of shares of Borrower’s common stock and/or Permitted Convertible Debt plus the net cash proceeds, if any, received by Borrower pursuant to the related exercise or early unwind or termination of the related Permitted Bond
Hedge Transactions and Permitted Warrant Transactions, if any, pursuant to the immediately following proviso); provided that, for the avoidance of doubt, substantially concurrently with, or a commercially reasonable period of time before or after,
the related settlement date for the Permitted Convertible Debt that are so repurchased, exchanged or converted, Borrower may exercise or unwind or terminate early (whether in cash, shares or any combination thereof) the portion of the Permitted Bond
Hedge Transactions and Permitted Warrant Transactions, if any, corresponding to such Permitted Convertible Debt that are so repurchased, exchanged or converted. 

7.7 Distributions. Borrower shall not, nor shall it permit any Subsidiary to, (a) repurchase or redeem any class of stock or other
Equity Interest other than repurchases described in clause (c) of the defined term “Permitted Investments”; (b) declare or pay any cash dividend or make a cash distribution on any class of stock or other
Equity Interest, except that a Subsidiary of Borrower may pay dividends or make distributions to Borrower or a Subsidiary of Borrower; (c) lend money to any employees, officers or directors or guarantee the payment of any such loans
granted by a third party in excess of $500,000 in the aggregate; or (d) waive, release or forgive any Indebtedness owed by any employees, officers or directors in excess of $500,000 in the aggregate. 

Notwithstanding the foregoing, and for the avoidance of doubt, this Section 7.7 shall not prohibit (i) the
conversion by holders of (including any cash payment upon conversion), or required payment of any principal or premium on (including, for the avoidance of doubt, in respect of a required repurchase in connection with the redemption of Permitted
Convertible Debt upon satisfaction of a condition related to the stock price of Borrower’s common stock) or required payment of any interest with respect to, any Permitted Convertible Debt in each case, in accordance with the terms of the
indenture governing such Permitted Convertible Debt or (ii) the entry into 

  
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(including the payment of premiums in connection therewith) or any required payment with respect to, or required early unwind or settlement of, any Permitted Bond Hedge Transaction or Permitted
Warrant Transaction, in each case, in accordance with the terms of the agreement governing such Permitted Bond Hedge Transaction or Permitted Warrant Transaction. 

Notwithstanding the foregoing, Borrower may repurchase, exchange or induce the conversion of Permitted Convertible Debt by delivery of shares
of Borrower’s common stock and/or a different series of Permitted Convertible Debt and/or by payment of cash (in an amount that does not exceed the proceeds received by Borrower from the substantially concurrent issuance of shares of
Borrower’s common stock and/or Refinancing Convertible Notes plus the net cash proceeds, if any, received by Borrower pursuant to the related exercise or early unwind or termination of the related Permitted Bond Hedge Transactions and Permitted
Warrant Transactions, if any, pursuant to the immediately following proviso); provided that, for the avoidance of doubt, substantially concurrently with, or a commercially reasonable period of time before or after, the related settlement date for
the Permitted Convertible Debt that are so repurchased, exchanged or converted, Borrower may exercise or unwind or terminate early (whether in cash, shares or any combination thereof) the portion of the Permitted Bond Hedge Transactions and
Permitted Warrant Transactions, if any, corresponding to such Permitted Convertible Debt that are so repurchased, exchanged or converted. 

7.8 Transfers. Except for Permitted Transfers, Borrower shall not, and shall not permit any Subsidiary to, voluntarily or involuntarily
transfer, sell, lease, license, lend or in any other manner convey any equitable, beneficial or legal interest in any material portion of its assets (including Cash). 

7.9 Mergers or Acquisitions. Borrower shall not merge or consolidate, nor permit any of its Subsidiaries to merge or consolidate, with
or into any other business organization, other than mergers or consolidations of (a) a Subsidiary which is not a Loan Party into another Subsidiary or into a Loan Party, or (b) a Loan Party into another Loan Party (provided
that Borrower shall be the surviving entity in any transaction involving Borrower), or acquire, or permit any of its Subsidiaries to acquire, in each case including for the avoidance of doubt through a merger, purchase, in-licensing arrangement or
any similar transaction, all or substantially all of the capital stock or property of another Person, provided however, that Borrower shall be permitted to enter into Permitted Acquisitions. 

7.10 Taxes. Borrower shall, and shall cause each of its Subsidiaries to, pay when due all material Taxes of any nature whatsoever now
or hereafter imposed or assessed against Borrower or such Subsidiary or the Collateral or upon Borrower’s (or such Subsidiary’s) ownership, possession, use, operation or disposition thereof or upon Borrower’s (or such
Subsidiary’s) rents, receipts or earnings arising therefrom. Borrower shall, and shall cause each of its Subsidiaries to accurately file on or before the due date therefor (taking into account proper extensions) all federal and state income Tax
returns and other material Tax returns required to be filed. Notwithstanding the foregoing, Borrower and its Subsidiaries may contest, in good faith and by appropriate proceedings diligently conducted, Taxes for which Borrower and its Subsidiaries
maintain adequate reserves in accordance with GAAP. 
 7.11 Certain Changes. Neither Borrower nor any Subsidiary shall change its
jurisdiction of organization, organizational form or legal name without twenty (20) days’ prior written notice to Agent. Neither Borrower nor any Subsidiary shall suffer a Change in Control. Neither Borrower nor any Subsidiary shall
relocate its chief executive office or its principal place of business unless: (i) it has provided prior written notice to Agent; and (ii) such relocation shall be within the continental United States of America. Neither
Borrower nor any Subsidiary shall relocate any item of Collateral (other than (x) sales of Inventory in the ordinary course of business, (y) relocations of Equipment within the United States having an aggregate value of up to
$1,500,000 in any fiscal year, and (z) relocations of Collateral from a location described on Exhibit B to another location described on Exhibit B) unless (i) it has provided prompt written notice to
Agent, (ii) such relocation is within the continental United States of America and, (iii) if such relocation is to a third party bailee, it has used commercially reasonable efforts to deliver a bailee agreement in form and
substance reasonably acceptable to Agent. 
 7.12 Deposit Accounts. Subject to Section 4.4, other than Excluded Accounts,
neither Borrower nor any Subsidiary (other than an Excluded Subsidiary) shall maintain any Deposit Accounts, or accounts holding Investment Property, except with respect to which Agent has an Account Control Agreement. 

  
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 7.13 Joinder of Subsidiaries; Limitation on Foreign Subsidiaries. Borrower shall
notify Agent of each Subsidiary formed subsequent to the Closing Date and, within 20 days of formation, shall cause any such Domestic Subsidiary (other than an Excluded Subsidiary) to execute and deliver to Agent a Joinder Agreement, or, if
requested by Agent, a Guaranty and appropriate collateral security documents to secure the obligations pursuant to such Guaranty. Borrower shall not permit Foreign Subsidiaries to maintain Cash balances in excess of $500,000 at any time. 

7.14 MSC Investment Conditions. At any time that the MSC Subsidiary holds any Cash, Borrower shall satisfy the MSC Investment
Conditions at all times. 
 7.15 Notification of Event of Default. Borrower shall notify Agent promptly, in any event within three
(3) Business Days, of the occurrence of any Event of Default. 
 7.16 SBA Addendum. One or more affiliates of Agent have
received a license from the U.S. Small Business Administration (“SBA”) to extend loans as a small business investment company (“SBIC”) pursuant to the Small Business Investment Act of 1958, as amended, and the associated
regulations (collectively, the “SBIC Act”). Portions of the Loan to Borrower may be made by a Lender that is an SBIC. Addendum 2 to this Agreement outlines various responsibilities of Agent, each Lender and Borrower associated with
a loan made by an SBIC, and such Addendum 2 is hereby incorporated in this Agreement. 
 7.17 Use of Proceeds. Borrower agrees
that the proceeds of the Loans shall be used solely to pay related fees and expenses in connection with this Agreement and for working capital and general business purposes. The proceeds of the Loans shall not be used in violation of Anti-Corruption
Laws or applicable Sanctions. 
 7.18 Compliance with Laws. 

(a) Borrower shall maintain, and shall cause each of its Subsidiaries to maintain compliance in all material respects with all
applicable laws, rules or regulations, and shall, or cause its Subsidiaries to, obtain and maintain all required governmental authorizations, approvals, licenses, franchises, permits or registrations reasonably necessary in connection with the
conduct of Borrower’s business. Borrower shall not become an “investment company” or a company controlled by an “investment company”, under the Investment Company Act of 1940, as amended, or undertake as one of its important
activities extending credit to purchase or carry margin stock (as defined in Regulation X, T and U of the Federal Reserve Board of Governors). 

(b) Neither Borrower nor any of its Subsidiaries shall, nor shall Borrower or any of its Subsidiaries permit any controlled
Affiliate to, directly or indirectly, knowingly enter into any documents, instruments, agreements or contracts with any Person listed on the OFAC Lists. Neither Borrower nor any of its Subsidiaries shall, nor shall Borrower or any of its
Subsidiaries permit any controlled Affiliate to, directly or indirectly, (i) conduct any business or engage in any transaction or dealing with any Blocked Person, including, without limitation, the making or receiving of any contribution of
funds, goods or services to or for the benefit of any Blocked Person, (ii) deal in, or otherwise engage in any transaction relating to, any property or interests in property blocked pursuant to Executive Order No. 13224 or any similar
executive order or other Anti-Terrorism Law, or (iii) engage in or conspire to engage in any transaction that evades or avoids, or has the purpose of evading or avoiding, or attempts to violate, any of
the prohibitions set forth in Executive Order No. 13224 or other Anti-Terrorism Law. 

(c) Borrower has implemented and shall maintain in effect policies and procedures designed to reasonably ensure compliance by
Borrower and its Subsidiaries and their respective directors, officers, employees and agents with Anti-Corruption Laws and applicable Sanctions, and Borrower and its Subsidiaries and their respective officers and employees and to the knowledge
Borrower, its directors and agents, are in compliance with Anti-Corruption Laws and applicable Sanctions in all material respects 

  
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 (d) Neither Borrower nor its Subsidiaries nor any of their respective
directors, officers or employees, or to the knowledge of Borrower, any agent for Borrower or any of its Subsidiaries that shall act in any capacity in connection with or benefit from the credit facility established hereby, is a Sanctioned Person. No
Loan, use of proceeds or other transaction contemplated by this Agreement shall violate Anti-Corruption Laws or applicable Sanctions. 

7.19 Financial Covenant – Minimum Cash. 

(a) On the earlier of (i) October 31, 2020 (or if Performance Milestone I has been achieved, December 31, 2020)
or (ii) the date of the announcement of Phase 2b ECORESET data and at all times thereafter, Borrower shall maintain Unrestricted Cash in amounts not less than the applicable amount, determined by reference to the schedule below: 

 

					
	 Milestones Achieved
	  	Minimum Cash Required	 
	 Performance Milestone I achieved;

Performance Milestone II achieved
	  	$	0	 
	 Performance Milestone I failed;

Performance Milestone II achieved
	  	$	10,000,000	 
	 Performance Milestone I achieved;

Performance Milestone II failed
	  	$	12,500,000	 
	 Performance Milestone I failed;

Performance Milestone II failed
	  	$	20,000,000	 

 Notwithstanding the foregoing, for so long as Borrower’s Market Capitalization is greater than
$350,000,000, this Section 7.19(a) shall not apply. 
 (b) In the event Borrower makes a redemption
or other cash payment in respect of Permitted Convertible Debt subject to satisfaction of the Redemption Conditions, or enters into a license agreement constituting a Permitted Transfer in accordance with clause (b)(iv)(B) of the defined term
“Permitted Transfer”, Borrower shall maintain Unrestricted Cash at all times in the amount required by the defined term “Redemption Conditions” or clause (b)(iv)(B) of the defined term “Permitted Transfer”, at
all times. 
 7.20 Intellectual Property. Borrower shall (i) protect, defend and maintain the validity and enforceability of its
Intellectual Property in its good faith business judgment; (ii) promptly advise Agent in writing of material infringements of its Material Intellectual Property; and (iii) not allow any Material Intellectual Property material to
Borrower’s business to be abandoned, forfeited or dedicated to the public without Agent’s written consent. 
 7.21 Transactions
with Affiliates. Borrower shall not, and shall not permit any Subsidiary to, directly or indirectly, enter into or permit to exist any transaction of any kind with any Affiliate of Borrower or such Subsidiary on terms that are less favorable to
Borrower or such Subsidiary, as the case may be, than those that might be obtained in an arm’s length transaction from a Person who is not an Affiliate of Borrower or such Subsidiary, other than (a) any equity investments in Borrower by
existing investors of Borrower not constituting a Change of Control, or Subordinated Indebtedness, (b) any compensation, director indemnification or similar arrangements in the ordinary course of business of Borrower and as approved by
Borrower’s Board, (c) any intercompany arrangements entered into in the ordinary course of business and not prohibited hereunder, or (d) any transaction otherwise permitted under this Article 7. 

  
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 SECTION 8 

[RESERVED.] 

SECTION 9 
 EVENTS OF
DEFAULT 
 The occurrence of any one or more of the following events shall be an Event of Default: 

9.1 Payments. A Loan Party fails to (a) pay principal or interest on any Loan on its due date or (b) pay any other
Secured Obligations within three (3) Business Days after the applicable due date; provided, however, that, in each case, an Event of Default shall not occur on account of a failure to pay due solely to an administrative or operational
error of Agent or Lenders or Borrower’s bank if Borrower had the funds to make the payment when due and makes the payment within three (3) Business Days following Borrower’s knowledge of such failure to pay; or 

9.2 Covenants. A Loan Party breaches or defaults in the performance of any covenant or Secured Obligation under this Agreement, or any
of the other Loan Documents or any other agreement among any Loan Party, Agent and Lenders, and (a) with respect to a default under any covenant under this Agreement other than the Sections specifically identified in
clause (b) hereof, any other Loan Document or any other agreement between any Loan Party and Agent or Lenders, and such default continues for more than fifteen (15) Business Days after the earlier of the date on which
(i) Agent or Lenders has given notice of such default to Borrower and (ii) Borrower has actual knowledge of such default (provided that, with respect to a default due to a failure to comply with Section 7.12 with respect
to any new account, Borrower shall be deemed to have knowledge of the default as of the time such account is opened) or (b) with respect to a default under any of Sections 4.4, 6, 7.1, 7.4, 7.5, 7.6, 7.7, 7.8, 7.9, 7.14, 7.15,
7.17, 7.18, 7.19, 7.20 and 7.21, the occurrence of such default; or 
 9.3 Material Adverse Effect. A circumstance has occurred
that could reasonably be expected to have a Material Adverse Effect; provided that the failure to achieve Performance Milestone I or Performance Milestone II shall not in and of itself constitute a Material Adverse Effect under this
Section 9.3; or 
 9.4 Representations. Any representation or warranty made by any Loan Party in any Loan Document, when
taken as a whole, shall have been false or misleading in any material respect when made or when deemed made; or 
 9.5 Insolvency.
Any Loan Party (i) (A) shall make an assignment for the benefit of creditors; or (B) shall be unable to pay its debts as they become due; or (C) shall file a voluntary petition in bankruptcy; or
(D) shall file any petition, answer, or document seeking for itself any reorganization, arrangement, composition, readjustment, liquidation, dissolution or similar relief under any present or future statute, law or regulation pertinent
to such circumstances; or (E) shall seek or consent to or acquiesce in the appointment of any trustee, receiver, or liquidator of any Loan Party or of all or any substantial part (i.e. 33-1/3% or
more) of the assets or property of any Loan Party; or (F) shall cease operations of its business as its business has normally been conducted, or terminate substantially all of its employees; or (G) any Loan Party or its
directors or a majority of the holders of its Equity Interests shall take any action initiating any of the foregoing actions described in clauses (A) through (F); or (ii) either (A) forty-five (45) days shall have expired
after the commencement of an involuntary action against any Loan Party seeking reorganization, arrangement, composition, readjustment, liquidation, dissolution or similar relief under any present or future statute, law or regulation, without such
action being dismissed or all orders or proceedings thereunder affecting the operations or the business of any Loan Party being stayed; or (B) a stay of any such order or proceedings shall thereafter be set aside and the action setting
it aside shall not be timely appealed; or (C) any Loan Party shall file any answer admitting or not contesting the material allegations of a petition filed against such Loan Party in any such proceedings; or (D) the court in
which such proceedings are pending shall enter a decree or order granting the relief sought in any such proceedings; or (E) forty-five (45) days shall have expired after the appointment, without the consent or acquiescence of any
Loan Party, of any trustee, receiver or liquidator of such Loan Party or of all or any part of the properties of such Loan Party without such appointment being vacated; or 

  
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 9.6 Attachments; Judgments. Any portion of any Loan Party’s assets in aggregate
value of $500,000 or more, is attached or seized, or a levy is filed against any such assets, or a judgment or judgments is/are entered for the payment of money (not covered by independent third party insurance as to which liability has not been
rejected by such insurance carrier) individually or in the aggregate, of at least $500,000, or any Loan Party is enjoined or in any way prevented by court order from conducting any part of its business; or 

9.7 Other Obligations. The occurrence of any default under any agreement or obligation of any Loan Party involving any Indebtedness in
excess of $500,000, or any early payment is required or unwinding or termination occurs with respect to any Permitted Bond Hedge Transaction and Permitted Warrant Transaction, or any condition giving rise to the foregoing is met, in each case, with
respect to which Borrower or its Affiliates is the “defaulting party” under the terms of such Permitted Bond Hedge Transaction or Permitted Warrant Transaction. 

SECTION 10 
 REMEDIES

 10.1 General. Upon and during the continuance of any one or more Events of Default, Agent may, and at the direction of the
Required Lenders shall, accelerate and demand payment of all or any part of the Secured Obligations together with a Prepayment Charge and declare them to be immediately due and payable (provided, that upon the occurrence of an Event of Default of
the type described in Section 9.5, all of the Secured Obligations (including, without limitation, the Prepayment Charge and the End of Term Charge) shall automatically be accelerated and made due and payable, in each case without any
further notice or act). Borrower hereby irrevocably appoints Agent as its lawful attorney-in-fact to: exercisable following the occurrence of an Event of
Default, (i) sign Borrower’s name on any invoice or bill of lading for any account or drafts against account debtors; (ii) demand, collect, sue, and give releases to any account debtor for monies due, settle and adjust
disputes and claims about the accounts directly with account debtors, and compromise, prosecute, or defend any action, claim, case, or proceeding about any Collateral (including filing a claim or voting a claim in any bankruptcy case in Agent’s
or Borrower’s name, as Agent may elect); (iii) make, settle, and adjust all claims under Borrower’s insurance policies; (iv) pay, contest or settle any Lien, charge, encumbrance, security interest, or other claim in or to the
Collateral, or any judgment based thereon, or otherwise take any action to terminate or discharge the same; (v) transfer the Collateral into the name of Agent or a third party as the UCC permits; and (vi) receive, open and
dispose of mail addressed to Borrower. Borrower hereby appoints Agent as its lawful attorney-in-fact to sign Borrower’s name on any documents necessary
to perfect or continue the perfection of Agent’s security interest in the Collateral regardless of whether an Event of Default has occurred until all Secured Obligations have been satisfied in full and the Loan Documents have been
terminated. Agent’s foregoing appointment as Borrower’s attorney in fact, and all of Agent’s rights and powers, coupled with an interest, are irrevocable until all Secured Obligations have been fully repaid and performed
and the Loan Documents have been terminated. Agent may, and at the direction of the Required Lenders shall, exercise all rights and remedies with respect to the Collateral under the Loan Documents or otherwise available to it under the UCC and other
applicable law, including the right to release, hold, sell, lease, liquidate, collect, realize upon, or otherwise dispose of all or any part of the Collateral and the right to occupy, utilize, process and commingle the Collateral. All Agent’s
rights and remedies shall be cumulative and not exclusive. 
 10.2 Collection; Foreclosure. Upon the occurrence and during the
continuance of any Event of Default, Agent may, and at the direction of the Required Lenders shall, at any time or from time to time, apply, collect, liquidate, sell in one or more sales, lease or otherwise dispose of, any or all of the Collateral,
in its then condition or following any commercially reasonable preparation or processing, in such order as Agent may elect. Any such sale may be made either at public or private sale at its place of business or elsewhere. Borrower agrees that any
such public or private sale may occur upon ten (10) calendar days’ prior written notice to Borrower. Agent may require Borrower to assemble the Collateral and make it available to Agent at a place designated by Agent that is reasonably
convenient to Agent and Borrower. The proceeds of any sale, disposition or other realization upon all or any part of the Collateral shall be applied by Agent in the following order of priorities: 

First, to Agent and Lenders in an amount sufficient to pay in full Agent’s and Lenders’ reasonable costs and professionals’ and
advisors’ fees and expenses as described in Section 11.11; 

  
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 Second, to Lenders, ratably, in an amount equal to the then unpaid amount of the Secured
Obligations (including principal, interest, subject to increase in accordance with Section 2.3), in such order and priority as Agent may choose in its sole discretion; and 

Finally, after the full and final payment in Cash of all of the Secured Obligations (other than inchoate obligations), to any creditor holding
a junior Lien on the Collateral, or to Borrower or its representatives or as a court of competent jurisdiction may direct. 
 Agent shall be
deemed to have acted reasonably in the custody, preservation and disposition of any of the Collateral if it complies with the obligations of a secured party under the UCC. 

10.3 No Waiver. Agent shall be under no obligation to marshal any of the Collateral for the benefit of Borrower or any other Person,
and Borrower expressly waives all rights, if any, to require Agent to marshal any Collateral. 
 10.4 Waivers. Borrower waives
demand, notice of default or dishonor, notice of payment and nonpayment, notice of any default, nonpayment at maturity, release, compromise, settlement, extension, or renewal of accounts, documents, instruments, chattel paper, and guarantees held by
Agent on which Borrower is liable. 
 10.5 Cumulative Remedies. The rights, powers and remedies of Agent hereunder shall be in
addition to all rights, powers and remedies given by statute or rule of law and are cumulative. The exercise of any one or more of the rights, powers and remedies provided herein shall not be construed as a waiver of or election of remedies with
respect to any other rights, powers and remedies of Agent. 
 SECTION 11 

MISCELLANEOUS 
 11.1
Severability. Whenever possible, each provision of this Agreement shall be interpreted in such manner as to be effective and valid under applicable law, but if any provision of this Agreement shall be prohibited by or invalid under such law,
such provision shall be ineffective only to the extent and duration of such prohibition or invalidity, without invalidating the remainder of such provision or the remaining provisions of this Agreement. 

11.2 Notice. Except as otherwise provided herein, any notice, demand, request, consent, approval, declaration, service of process or
other communication (including the delivery of Financial Statements) that is required, contemplated, or permitted under the Loan Documents or with respect to the subject matter hereof shall be in writing, and shall be deemed to have been validly
served, given, delivered, and received upon the earlier of: (i) the day of transmission by electronic mail or hand delivery or delivery by an overnight express service or overnight mail delivery service; or (ii) the third calendar
day after deposit in the United States of America mails, with proper first class postage prepaid, in each case addressed to the party to be notified as follows: 
  

	 	(a)	 If to Agent: 



HERCULES CAPITAL, INC. 
 Legal
Department 
 Attention: Chief Legal Officer and Kristen Kosofsky 

400 Hamilton Avenue, Suite 310 

Palo Alto, CA 94301 
 email:
legal@htgc.com; kkosofsky@htgc.com 
 Telephone:
650-289-3060 
  

	 	(b)	 If to Lenders: 



HERCULES CAPITAL, INC. 
 Legal
Department 
 Attention: Chief Legal Officer and Kristen Kosofsky 

400 Hamilton Avenue, Suite 310 

Palo Alto, CA 94301 
 email:
legal@htgc.com; kkosofsky@htgc.com 
 Telephone:
650-289-3060 

  
 31 














	 	(c)	 If to Borrower: 



Seres Therapeutics, Inc. 

Attention: Thomas J. DesRosier, Chief Legal Officer 

200 Sidney Street 
 Cambridge,
MA 02139 
 email: tdesrosier@serestherapeutics.com 

Telephone: 617-945-9626 

with a copy to 

Latham & Watkins LLP 

Attention: Haim Zaltzman 
 505
Montgomery Street 
 Suite 2000 

San Francisco, CA 94111-6538 

Email: haim.zaltzman@lw.com 

Telephone: 415-395-8870 

or to such other address as each party may designate for itself by like notice. 

11.3 Entire Agreement; Amendments. 

(a) This Agreement and the other Loan Documents constitute the entire agreement and understanding of the parties hereto in
respect of the subject matter hereof and thereof, and supersede and replace in their entirety any prior proposals, term sheets, non-disclosure or confidentiality agreements, letters, negotiations or other
documents or agreements, whether written or oral, with respect to the subject matter hereof or thereof (including Agent’s proposal letter dated September 19, 2019 and accepted by Borrower on September 25, 2019 and the Non-Disclosure Agreement). 
 (b) Neither this Agreement, any other Loan Document, nor any
terms hereof or thereof may be amended, supplemented or modified except in accordance with the provisions of this Section 11.3(b). The Required Lenders and Loan Parties party to the relevant Loan Document may, or, with the
written consent of the Required Lenders, Agent and Loan Parties party to the relevant Loan Document may, from time to time, (i) enter into written amendments, supplements or modifications hereto and to the other Loan Documents for the purpose
of adding any provisions to this Agreement or the other Loan Documents or changing in any manner the rights of Lenders or of Loan Parties hereunder or thereunder or (ii) waive, on such terms and conditions as the Required Lenders or Agent, as
the case may be, may specify in such instrument, any of the requirements of this Agreement or the other Loan Documents or any default or Event of Default and its consequences; provided, however, that no such waiver and no such amendment, supplement
or modification shall (A) forgive the principal amount or extend the final scheduled date of maturity of any Loan, extend the scheduled date of any amortization payment in respect of any Term Loan Advance, reduce the stated rate of any interest
or fee payable hereunder, or extend the scheduled date of any payment thereof, in each case without the written consent of each Lender directly affected thereby; (B) eliminate or reduce the voting rights of any Lender under this
Section 11.3(b) without the written consent of such Lender; (C) reduce any percentage specified in the definition of Required Lenders, consent to the assignment or transfer by Loan Parties of any of its rights and
obligations under this Agreement and the other Loan Documents, release all or substantially all of the Collateral or release a Loan Party from its 

  
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obligations under the Loan Documents, in each case without the written consent of all Lenders; or (D) amend, modify or waive any provision of Section 11.17 without
the written consent of Agent. Any such waiver and any such amendment, supplement or modification shall apply equally to each Lender and shall be binding upon the applicable Loan Parties, Lenders, Agent and all future holders of the Loans. 

11.4 No Strict Construction. The parties hereto have participated jointly in the negotiation and drafting of this Agreement. In the
event an ambiguity or question of intent or interpretation arises, this Agreement shall be construed as if drafted jointly by the parties hereto and no presumption or burden of proof shall arise favoring or disfavoring any party by virtue of the
authorship of any provisions of this Agreement. 
 11.5 No Waiver. The powers conferred upon Agent and Lenders by this Agreement are
solely to protect their rights hereunder and under the other Loan Documents and their interest in the Collateral and shall not impose any duty upon Agent or Lenders to exercise any such powers. No omission or delay by Agent or Lenders at any time to
enforce any right or remedy reserved to them, or to require performance of any of the terms, covenants or provisions hereof by Borrower at any time designated, shall be a waiver of any such right or remedy to which Agent or Lenders is entitled, nor
shall it in any way affect the right of Agent or Lenders to enforce such provisions thereafter. 
 11.6 Survival. All agreements,
representations and warranties contained in this Agreement and the other Loan Documents or in any document delivered pursuant hereto or thereto shall be for the benefit of Agent, Lenders and Borrower, as applicable, and shall survive the execution
and delivery of this Agreement. Sections 6.3, 11.8, 11.9, 11.10, 11.14, 11.15 and 11.17, shall survive the termination of this Agreement. 

11.7 Successors and Assigns. The provisions of this Agreement and the other Loan Documents shall inure to the benefit of and be binding
on Borrower and its permitted assigns (if any). No Loan Party shall assign its obligations under this Agreement or any of the other Loan Documents without Agent’s express prior written consent, and any such attempted assignment shall be void
and of no effect. Agent and Lenders may assign, transfer, or endorse its rights hereunder and under the other Loan Documents without prior notice to Borrower, and all of such rights shall inure to the benefit of Agent’s and Lenders’
successors and assigns; provided that as long as no Event of Default has occurred and is continuing, neither Agent nor any Lenders may assign, transfer or endorse its rights hereunder or under the Loan Documents to any party that is a direct
competitor of Borrower or a distressed debt or vulture fund (as reasonably determined by Agent), it being acknowledged that in all cases, any transfer to a controlled Affiliate of any Lenders or Agent shall be allowed. Notwithstanding the foregoing,
(x) in connection with any assignment by a Lender as a result of a forced divestiture at the request of any regulatory agency, the restrictions set forth herein shall not apply and Agent and Lenders may assign, transfer or indorse its rights
hereunder and under the other Loan Documents to any Person or party and (y) in connection with a Lender’s own financing or securitization transactions, the restrictions set forth herein shall not apply and Agent and Lenders may
assign, transfer or indorse its rights hereunder and under the other Loan Documents to any Person or party providing such financing or formed to undertake such securitization transaction and any transferee of such Person or party upon the occurrence
of a default, event of default or similar occurrence with respect to such financing or securitization transaction; provided that no such sale, transfer, pledge or assignment under this clause (y) shall release such Lender from any
of its obligations hereunder or substitute any such Person or party for such Lender as a party hereto until Agent shall have received and accepted an effective assignment agreement from such Person or party in form satisfactory to Agent executed,
delivered and fully completed by the applicable parties thereto, and shall have received such other information regarding such assignee as Agent reasonably shall require. Agent, acting solely for this purpose as an agent of Borrower, shall
maintain at one of its offices in the United States a register for the recordation of the names and addresses of Lender(s), Term Commitments of, and principal amounts (and stated interest) of the Loans owing to, each Lender pursuant to the terms
hereof from time to time (the “Register”). The entries in the Register shall be conclusive absent manifest error, and Borrower, Agent and Lender shall treat each Person whose name is recorded in the Register pursuant to the terms hereof as
a Lender hereunder for all purposes of this Agreement. The Register shall be available for inspection by Borrower and any Lender, at any reasonable time and from time to time upon reasonable prior notice. 

11.8 Governing Law. This Agreement and the other Loan Documents have been negotiated and delivered to Agent and Lenders in the State of
California, and shall have been accepted by Agent and Lenders in the State of California. Payment to Agent and Lenders by Borrower of the Secured Obligations is due in the State of California. This Agreement and the other Loan Documents shall be
governed by, and construed and enforced in accordance with, the laws of the State of California, excluding conflict of laws principles that would cause the application of laws of any other jurisdiction. 

  
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 11.9 Consent to Jurisdiction and Venue. All judicial proceedings (to the extent that
the reference requirement of Section 11.10 is not applicable) arising in or under or related to this Agreement or any of the other Loan Documents may be brought in any state or federal court located in the State of California. By
execution and delivery of this Agreement, each party hereto generally and unconditionally: (a) consents to nonexclusive personal jurisdiction in Santa Clara County, State of California; (b) waives any objection as to jurisdiction or venue
in Santa Clara County, State of California; (c) agrees not to assert any defense based on lack of jurisdiction or venue in the aforesaid courts; and (d) irrevocably agrees to be bound by any judgment rendered thereby in connection with
this Agreement or the other Loan Documents. Service of process on any party hereto in any action arising out of or relating to this Agreement shall be effective if given in accordance with the requirements for notice set forth in
Section 11.2, and shall be deemed effective and received as set forth in Section 11.2. Nothing herein shall affect the right to serve process in any other manner permitted by law or shall limit the right of either party to
bring proceedings in the courts of any other jurisdiction. 
 11.10 Mutual Waiver of Jury Trial / Judicial Reference. 

(a) Because disputes arising in connection with complex financial transactions are most quickly and economically resolved by an
experienced and expert Person and the parties wish applicable state and federal laws to apply (rather than arbitration rules), the parties desire that their disputes be resolved by a judge applying such applicable laws. EACH OF BORROWER AGENT AND
LENDERS SPECIFICALLY WAIVES ANY RIGHT IT MAY HAVE TO TRIAL BY JURY OF ANY CAUSE OF ACTION, CLAIM, CROSS-CLAIM, COUNTERCLAIM, THIRD PARTY CLAIM OR ANY OTHER CLAIM (COLLECTIVELY, “CLAIMS”) ASSERTED BY BORROWER AGAINST AGENT, LENDERS
OR THEIR RESPECTIVE ASSIGNEE OR BY AGENT, LENDERS OR THEIR RESPECTIVE ASSIGNEE AGAINST BORROWER. This waiver extends to all such Claims, including Claims that involve Persons other than Agent, Borrower or any Lenders; Claims that arise out of or are
in any way connected to the relationship among Borrower, Agent and Lenders; and any Claims for damages, breach of contract, tort, specific performance, or any equitable or legal relief of any kind, arising out of this Agreement, any other Loan
Document. 
 (b) If the waiver of jury trial set forth in Section 11.10(a) is ineffective or
unenforceable, the parties agree that all Claims shall be resolved by reference to a private judge sitting without a jury, pursuant to Code of Civil Procedure Section 638, before a mutually acceptable referee or, if the parties cannot agree, a
referee selected by the Presiding Judge of the Santa Clara County, California. Such proceeding shall be conducted in Santa Clara County, California, with California rules of evidence and discovery applicable to such proceeding. 

(c) In the event Claims are to be resolved by judicial reference, either party may seek from a court identified in
Section 11.9, any prejudgment order, writ or other relief and have such prejudgment order, writ or other relief enforced to the fullest extent permitted by law notwithstanding that all Claims are otherwise subject to
resolution by judicial reference. 
 11.11 Professional Fees. Borrower promises to pay Agent’s and Lenders’ reasonable fees
and expenses necessary to finalize the loan documentation, including but not limited to reasonable attorneys’ fees, UCC searches, filing costs, and other miscellaneous expenses, provided that the Due Diligence Fee shall be applied in its
entirety to the Lenders’ non-legal transaction costs and due diligence expenses. In addition, Borrower promises to pay any and all reasonable attorneys’ and other professionals’ fees and
expenses incurred by Agent and Lenders after the Closing Date in connection with or related to: (a) the Loan; (b) the administration, collection, or enforcement of the Loan; (c) the amendment or modification of the Loan
Documents; (d) any waiver, consent, release, or termination under the Loan Documents; (e) the protection, preservation, audit, field exam, sale, lease, liquidation, or disposition of Collateral or the exercise of remedies
with respect to the Collateral; (f) any legal, litigation, administrative, arbitration, or out of court proceeding in connection with or related to Borrower or the Collateral, and any appeal or review thereof; and (g) any
bankruptcy, restructuring, reorganization, assignment for the benefit of creditors, workout, foreclosure, or other action related to Borrower, the Collateral, the Loan Documents, including representing Agent or Lenders in any adversary proceeding or
contested matter commenced or continued by or on behalf of Borrower’s estate, and any appeal or review thereof. 

  
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 11.12 Confidentiality. Agent and Lenders acknowledge that certain items of Collateral
and information provided to Agent and Lenders by Borrower are confidential and proprietary information of Borrower, if and to the extent such information either (i) is marked as confidential by Borrower at the time of disclosure, or
(ii) should reasonably be understood to be confidential (the “Confidential Information”). Accordingly, Agent and Lenders agree that any Confidential Information it may obtain in the course of acquiring, administering, or perfecting
Agent’s security interest in the Collateral shall not be disclosed to any other Person or entity in any manner whatsoever, in whole or in part, without the prior written consent of Borrower, except that Agent and Lenders may disclose any such
information: (a) to its Affiliates and its partners, investors, lenders, directors, officers, employees, agents, advisors, accountants, counsel, representative and other professional advisors if Agent or Lenders in their reasonable discretion
determines that any such party should have access to such information in connection with such party’s responsibilities in connection with the Loan or this Agreement and, provided that such recipient of such Confidential Information either
(i) agrees to be bound by the confidentiality provisions of this paragraph or (ii) is otherwise subject to confidentiality restrictions that reasonably protect against the disclosure of Confidential Information pursuant to similar terms;
(b) if such information is generally available to the public or to the extent such information becomes publicly available other than as a result of a breach of this Section or becomes available to Agent or any Lender, or any of their
respective Affiliates on a non-confidential basis from a source other than Borrower and not in violation of any confidentiality obligations known to the Agent or such Lender; (c) if required or
appropriate in any report, statement or testimony submitted to any governmental authority having or claiming to have jurisdiction over Agent or Lenders and any rating agency; (d) if required or appropriate in response to any summons or subpoena
or in connection with any litigation, to the extent permitted or deemed advisable by Agent’s or Lenders’ counsel; (e) to comply with any legal requirement or law applicable to Agent or Lenders or demanded by any governmental
authority; (f) to the extent reasonably necessary in connection with the exercise of, or preparing to exercise, or the enforcement of, or preparing to enforce, any right or remedy under any Loan Document, including Agent’s sale, lease, or
other disposition of Collateral after default, or any action or proceeding relating to any Loan Document; (g) to any participant or assignee of Agent or Lenders or any prospective participant or assignee; provided, that such participant or
assignee or prospective participant or assignee is subject to confidentiality restrictions no less protective than the provisions of this Section 11.12; (h) otherwise to the extent consisting of general portfolio information that does
not identify Borrower; or (i) otherwise with the prior consent of Borrower; provided, that any disclosure made in violation of this Agreement shall not affect the obligations of Borrower or any of its Affiliates or any guarantor under this
Agreement or the other Loan Documents. Agent’s and Lenders’ obligations under this Section 11.12 shall supersede all of their respective obligations under the Non-Disclosure Agreement.

 11.13 Assignment of Rights. Borrower acknowledges and understands that Agent or Lenders may, subject to Section 11.7,
sell and assign all or part of its interest hereunder and under the Loan Documents to any Person or entity (an “Assignee”). After such assignment the term “Agent” or “Lender” as used in the Loan Documents shall mean and
include such Assignee, and such Assignee shall be vested with all rights, powers and remedies of Agent and Lenders hereunder with respect to the interest so assigned; but with respect to any such interest not so transferred, Agent and Lenders shall
retain all rights, powers and remedies hereby given. No such assignment by Agent or Lenders shall relieve Borrower of any of its obligations hereunder. Lenders agree that in the event of any transfer by it of any promissory notes, it shall endorse
thereon a notation as to the portion of the principal of such promissory notes, which shall have been paid at the time of such transfer and as to the date to which interest shall have been last paid thereon. 

11.14 Revival of Secured Obligations; Termination. Other than as set forth in Section 11.6, his Agreement and the other
Loan Documents shall terminate on the payment in full in cash of the Secured Obligations (other than any obligations that specifically survive termination). Notwithstanding the preceding sentence, this Agreement and the Loan Documents shall remain
in full force and effect and continue to be effective if any petition is filed by or against Borrower for liquidation or reorganization, if Borrower becomes insolvent or makes an assignment for the benefit of creditors, if a receiver or trustee is
appointed for all or any significant part of Borrower’s assets, or if any payment or transfer of Collateral is recovered from Agent or Lenders. The Loan Documents and the Secured Obligations and Collateral security shall continue to be
effective, or shall be revived or 

  
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reinstated, as the case may be, if at any time payment and performance of the Secured Obligations or any transfer of Collateral to Agent, or any part thereof is rescinded, avoided or avoidable,
reduced in amount, or must otherwise be restored or returned by, or is recovered from, Agent, Lenders or by any obligee of the Secured Obligations (other than obligations that survive termination), whether as a “voidable preference,”
“fraudulent conveyance,” or otherwise, all as though such payment, performance, or transfer of Collateral had not been made. In the event that any payment, or any part thereof, is rescinded, reduced, avoided, avoidable, restored, returned,
or recovered, the Loan Documents and the Secured Obligations shall be deemed, without any further action or documentation, to have been revived and reinstated except to the extent of the full and final payment to Agent or Lenders in cash. 

11.15 Counterparts. This Agreement and any amendments, waivers, consents or supplements hereto may be executed in any number of
counterparts, and by different parties hereto in separate counterparts, each of which when so delivered shall be deemed an original, but all of which counterparts shall constitute but one and the same instrument. 

11.16 No Third Party Beneficiaries. No provisions of the Loan Documents are intended, nor will be interpreted, to provide or create any
third-party beneficiary rights or any other rights of any kind in any Person other than Agent, Lenders and Borrower unless specifically provided otherwise herein, and, except as otherwise so provided, all provisions of the Loan Documents shall be
personal and solely among Agent, Lenders and the Loan Parties which are a party thereto. 
 11.17 Agency. Agent and each Lender
hereby agree to the terms and conditions set forth on Addendum 3 attached hereto. Borrower acknowledges and agrees to the terms and conditions set forth on Addendum 3 attached hereto. 

11.18 Publicity. None of the parties hereto nor any of its respective member businesses and Affiliates shall, without the other
parties’ prior written consent (which shall not be unreasonably withheld or delayed), publicize or use (a) the other party’s name (including a brief description of the relationship among the parties hereto), logo or hyperlink to such
other parties’ web site, separately or together, in written and oral presentations, advertising, promotional and marketing materials, client lists, public relations materials or on its web site (together, the “Publicity Materials”);
(b) the names of officers of such other parties in the Publicity Materials; and (c) such other parties’ name, trademarks, servicemarks in any news or press release concerning such party; provided however, notwithstanding
anything to the contrary herein, no such consent shall be required (i) to the extent necessary to comply with the requests of any regulators, legal requirements or laws applicable to such party, pursuant to any listing agreement with any
national securities exchange (so long as such party provides prior notice to the other party hereto to the extent reasonably practicable) and (ii) to comply with Section 11.12. 

11.19 Multiple Borrowers. If another party is joined as a Borrower hereunder after the Closing Date, each Borrower hereby agrees to the
terms and conditions set forth on Addendum 4 attached hereto. 
 [REMAINDER OF PAGE INTENTIONALLY LEFT BLANK] 

  
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 [SIGNATURE PAGE TO LOAN AND SECURITY AGREEMENT] 

IN WITNESS WHEREOF, Borrower, Agent and Lenders have duly executed and delivered this Loan and Security Agreement as of the date set forth
above. 
  

			
	BORROWER:
	
	SERES THERAPEUTICS, INC.
		
	Signature:	 	/s/ Eric Shaff
	Print Name:	 	Eric Shaff
	Title:	 	President, CEO














 [SIGNATURE PAGE TO LOAN AND SECURITY AGREEMENT] 

Accepted in Palo Alto, California: 
  

			
	AGENT:
	
	HERCULES CAPITAL, INC.
		
	Signature:	 	/s/ Jennifer Choe
	Print Name:	 	Jennifer Choe
	Title:	 	Assistant General Counsel


  

			
	LENDERS:
	
	HERCULES CAPITAL, INC.
		
	Signature:	 	/s/ Jennifer Choe
	Print Name:	 	Jennifer Choe
	Title:	 	Assistant General Counsel



  
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 Table of Addenda, Exhibits and Schedules 

 

			
	Addendum 1:	  	Taxes; Increased Costs
		
	Addendum 2:	  	SBA Provisions
		
	Addendum 3:	  	Agent and Lender Terms
		
	Addendum 4:	  	Multiple Borrower Terms
		
	Exhibit A:	  	Advance Request
		  	Attachment to Advance Request
		
	Exhibit B:	  	Name, Locations, and Other Information
		
	Exhibit C:	  	Patents, Trademarks, Copyrights and Licenses
		
	Exhibit D:	  	Deposit Accounts and Investment Accounts
		
	Exhibit E:	  	Compliance Certificate
		
	Exhibit F:	  	Joinder Agreement
		
	Exhibit G:	  	ACH Debit Authorization Agreement
		
	Exhibit H—1:	  	Form of U.S. Tax Compliance Certificate (For Foreign Lenders That Are Not Partnerships For U.S. Federal Income Tax Purposes)
		
	Exhibit H—2:	  	Form of U.S. Tax Compliance Certificate (For Foreign Participants That Are Not Partnerships For U.S. Federal Income Tax Purposes)
		
	Exhibit H—3:	  	Form of U.S. Tax Compliance Certificate (For Foreign Participants That Are Partnerships For U.S. Federal Income Tax Purposes)
		
	Exhibit H—4:	  	Form of U.S. Tax Compliance Certificate (For Foreign Lenders That Are Partnerships For U.S. Federal Income Tax Purposes)
		
	Schedule 1.1	  	Commitments
	Schedule 1A	  	Existing Indebtedness
	Schedule 1B	  	Existing Investments
	Schedule 1C	  	Existing Liens
	Schedule 5.8	  	Tax Matters
	Schedule 5.11	  	Product / Intellectual Property Litigation or Proceedings
	Schedule 5.14	  	Subsidiaries