Sec Form 4 Filing - BAIN CAPITAL VENTURE INVESTORS, LLC @ Flywire Corp - 2021-06-21

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person BAIN CAPITAL VENTURE INVESTORS, LLC 2. Issuer Name and Ticker or Trading Symbol Flywire Corp [ FLYW] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director X __ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) 200 CLARENDON STREET, 3. Date of Earliest Transaction (MM/DD/YY) 06/21/2021 (Street) BOSTON, MA02116 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) _____ Form filed by One Reporting Person __ X __ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Voting Common Stock 06/21/2021 X( 1 ) 75,000 A $ 0.17 16,349,364 I See footnotes ( 3 ) ( 4 ) ( 5 ) ( 6 ) Voting Common Stock 06/21/2021 X( 2 ) 190,500 A $ 1.48 16,539,864 I See footnotes ( 3 ) ( 4 ) ( 5 ) ( 6 )

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities) 1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5) 6. Date Exercisable and Expiration Date (MM/DD/YY) 7. Title and Amount of Underlying Securities (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares Warrants (Right to Buy) $ 0.17 06/21/2021 X( 1 ) 75,000 ( 1 ) ( 1 ) Voting Common Stock 75,000 $ 0 0 I See footnotes ( 3 ) ( 4 ) ( 5 ) ( 6 ) Warrants (Right to Buy) $ 1.48 06/21/2021 X( 2 ) 190,500 ( 2 ) ( 2 ) Voting Common Stock 190,500 $ 0 0 I See footnotes ( 3 ) ( 4 ) ( 5 ) ( 6 )

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other BAIN CAPITAL VENTURE INVESTORS, LLC 200 CLARENDON STREET BOSTON, MA02116 X BCIP Venture Associates II, L.P. 200 CLARENDON STREET BOSTON, MA02116 X BCIP Venture Associates II-B, LP 200 CLARENDON STREET BOSTON, MA02116 X Salem Enrique T C/O BAIN CAPITAL VENTURE INVESTORS 200 CLARENDON STREET BOSTON, MA02116 X Agarwal Ajay C/O BAIN CAPITAL VENTURE INVESTORS 200 CLARENDON STREET BOSTON, MA02116 X Signatures Bain Capital Venture Investors, LLC, By: /s/ Matthew C. Harris, Title: Managing Director 08/18/2021 Signature of Reporting Person Date BCIP Venture Associates II, LP, By: Boylston Coinvestors, LLC, its general partner, By: /s/ Matthew C. Harris, Title: Authorized Signatory 08/18/2021 Signature of Reporting Person Date BCIP Venture Associates II-B, LP, By: Boylston Coinvestors, LLC, its general partner, By: /s/ Matthew C. Harris, Title: Authorized Signatory 08/18/2021 Signature of Reporting Person Date /s/ Enrique T. Salem 08/18/2021 Signature of Reporting Person Date /s/ Ajay Agarwal 08/18/2021 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Each warrant was exercisable by the holder in whole or in part at any time and from time to time on or before August 22, 2022. On June 21, 2021, each of Bain Capital Venture Fund 2016, L.P. ("Venture Fund 2016"), BCIP Venture Associates II, LP ("BCIP Venture II") and BCIP Venture Associates II-B, LP ("BCIP Venture II-B") exercised warrants to purchase 67,668, 6,768 and 564 shares of the Issuer's Voting Common Stock, respectively. ( 2 )Each warrant was exercisable by the holder in whole or in part at any time and from time to time on or before January 15, 2025. On June 21, 2021, each of Venture Fund 2016, BCIP Venture II and BCIP Venture II-B exercised warrants to purchase 171,882, 17,187 and 1,431 shares of the Issuer's Voting Common Stock, respectively (together with the transaction described in footnote 1 above, the "Warrant Exercises"). ( 3 )Includes 13,573,035 shares of the Issuer's Voting Common Stock held directly by Bain Capital Venture Fund 2014, L.P. ("Venture Fund 2014"), 904,821 shares of the Issuer's Voting Common Stock held directly by Venture Fund 2016, 1,383,753 shares of the Issuer's Voting Common Stock held directly by BCIP Venture Associates ("BCIP Venture"), 93,096 shares of the Issuer's Voting Common Stock held directly by BCIP Venture Associates-B ("BCIP Venture-B"), 134,475 shares of the Issuer's Voting Common Stock held directly by BCIP Venture II, 10,140 shares of the Issuer's Voting Common Stock held directly by BCIP Venture II-B, 423,600 shares of the Issuer's Voting Common Stock held directly by Bain Capital Venture Coinvestment Fund II, L.P. ("Venture Coinvestment Fund II") and 16,944 shares of the Issuer's Voting Common Stock held directly by BCV 2019-MD Coinvestment II, L.P. ("2019-MD Coinvestment II" and, ( 4 )(Continued from footnote 3) together with Venture Fund 2014, Venture Fund 2016, BCIP Venture, BCIP Venture-B, BCIP Venture II, BCIP Venture II-B and Venture Coinvestment Fund II, the "Bain Capital Venture Entities"), in each case, after giving effect to the Warrant Exercises. ( 5 )Bain Capital Venture Investors, LLC ("BCVI") is (i) the general partner of Bain Capital Venture Partners 2014, L.P. ("Venture Partners 2014"), which is the general partner of Venture Fund 2014, (ii) the general partner of Bain Capital Venture Partners 2016, L.P. ("Venture Partners 2016"), which is the general partner of Venture Fund 2016 and (iii) the manager of Bain Capital Venture Coinvestment II Investors, LLC ("Venture Coinvestment II Investors"), which is the general partner of each of Venture Coinvestment Fund II and 2019-MD Coinvestment II. Boylston Coinvestors, LLC is (i) the managing partner of each of BCIP Venture and BCIP Venture-B and (ii) the general partner of each of BCIP Venture II and BCIP Venture II-B. The governance, investment strategy and decision-making process with respect to the investments held by the Bain Capital Venture Entities is directed by the Executive Committee of BCVI, which consists of Enrique Salem and Ajay Agarwal. ( 6 )(Continued From Footnote 5) As a result, each of BCVI, Venture Partners 2014, Venture Partners 2016, Venture Coinvestment II Investors and Messrs. Salem and Agarwal may be deemed to share voting and dispositive power with respect to all of the securities held by the Bain Capital Venture Entities. Each of BCVI, Venture Partners 2014, Venture Partners 2016, Venture Coinvestment II Investors and Messrs. Salem and Agarwal disclaims beneficial ownership of such securities except to the extent of its or his pecuniary interest therein.

Remarks: Form 2 of 2.

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