Sec Form 4 Filing - KIMBALL RICK @ Rapid7, Inc. - 2019-02-22

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 KIMBALL RICK 2. Issuer Name and Ticker or Trading Symbol Rapid7, Inc. [ RPD] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X __ Director _____ 10% Owner _____ Officer (give title below) X __ Other (specify below) Director by Deputization (Last) (First) (Middle) C/O TECHNOLOGY CROSSOVER VENTURES, 250 MIDDLEFIELD ROAD 3. Date of Earliest Transaction (MM/DD/YY) 02/22/2019 (Street) MENLO PARK, CA94025 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 Common Stock 02/22/2019 S 33,567 D $ 46.0132 ( 1 ) 0 I Goose Rocks Beach Partners, L.P. ( 2 ) Common Stock 02/22/2019 S 10,600 D $ 45.9992 ( 3 ) 0 I Yuan Family Trust dated 9/22/2006 ( 4 ) Common Stock 5,299 I TCV VII Management, L.L.C. ( 5 )

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

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other KIMBALL RICK C/O TECHNOLOGY CROSSOVER VENTURES 250 MIDDLEFIELD ROAD MENLO PARK, CA94025 X Director by Deputization Yuan David C/O TECHNOLOGY CROSSOVER VENTURES 250 MIDDLEFIELD ROAD MENLO PARK, CA94025 X Director by Deputization Signatures Frederic D. Fenton, Authorized Signatory for Richard H. Kimball 02/26/2019 Signature of Reporting Person Date Frederic D. Fenton, Authorized Signatory for David Yuan 02/26/2019 Signature of Reporting Person Date

Explanation of Responses:

( 1 )This number represents a weighted average sales price. The shares were sold at prices ranging from $45.87 to $46.23. The Reporting Person hereby undertakes to provide upon request by the Staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each price. ( 2 )Richard H. Kimball is the General Partner of Goose Rocks Beach Partners, L.P. Mr. Kimball disclaims beneficial ownership of such shares except to the extent of his pecuniary interest therein. ( 3 )This number represents a weighted average sales price. The shares were sold at prices ranging from $45.80 to $46.10. The Reporting Person hereby undertakes to provide upon request by the Staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each price. ( 4 )David L. Yuan is a Trustee of the Yuan Family Trust dated 9/22/2006. Mr. Yuan disclaims beneficial ownership of such shares except to the extent of his pecuniary interest therein. ( 5 )Represents restricted stock units ("RSUs") held of record by Timothy P. McAdam, for the benefit of TCV VII Management, L.L.C. ("TCV VII Management"). Each RSU represents a contingent right to receive one share of common stock the issuer. The RSUs vest in full on the earlier of (i) the date of the issuer's next annual meeting of stockholders held after the date of the grant or (ii) the first anniversary of the date of grant, in each case subject to Mr. McAdam's continued service with the issuer through the applicable vesting date. Mr. Kimball and five other people (the "TCM Members") are members of TCV VII Management. The TCM Members each disclaim beneficial ownership of such RSUs and the underlying shares of the issuer's common stock except to the extent of their respective pecuniary interest therein.

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

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