Sec Form 3 Filing - Desmond Laura @ DoubleVerify Holdings, Inc. - 2021-04-20

FORM 3 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

OMB APPROVAL OMB Number: 3235-0287 Expires: November 30, 2011 Estimated average burden hours per response... 0.5

1. Name and Address of Reporting Person Desmond Laura 2. Issuer Name and Ticker or Trading Symbol DoubleVerify Holdings, Inc. [ DV] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X __ Director _____ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) C/O DOUBLEVERIFY HOLDINGS, INC., 233 SPRING STREET 3. Date of Earliest Transaction (MM/DD/YY) 04/20/2021 (Street) NEW YORK, NY10013 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) __ X __ Form filed by One Reporting Person _____ 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 190,393 I By Trust ( 1 )

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 Options (Rights to Buy) $ 2.01 ( 2 ) 09/20/2027 Common Stock 721,694 I By Trust ( 1 ) Options (Rights to Buy) $ 2.01 ( 3 ) 09/20/2027 Common Stock 721,694 I By Trust ( 1 ) Restricted Stock Units ( 5 ) ( 4 ) ( 4 ) Common Stock 18,519 I By Trust ( 1 ) Restricted Stock Units ( 5 ) ( 6 ) ( 6 ) Common Stock 54,264 I By Trust ( 1 ) Restricted Stock Units ( 5 ) 04/27/2021( 7 ) ( 7 ) Common Stock 31,008 I By Trust ( 1 )

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Desmond Laura C/O DOUBLEVERIFY HOLDINGS, INC. 233 SPRING STREET NEW YORK, NY10013 X Signatures /s/ Andrew E. Grimmig, as Attorney-in-Fact for Laura B. Desmond 04/20/2021 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Represents shares, options and restricted stock units held by the Laura B. Desmond Revocable Trust for which Ms. Desmond is trustee. ( 2 )Represents non-qualified stock options granted on September 20, 2017, 25% of which vested on September 20, 2018 and the remainder of which have continued, and will continue, to vest at a rate of 6.25% per quarter thereafter, subject to Ms. Desmond's continued service. ( 3 )Represents non-qualified stock options granted on September 20, 2017 that vest upon the date that Providence VII U.S. Holdings L.P. receives cumulative cash proceeds in respect of its investment in DoubleVerify Holdings, Inc. (the "Company") equal to two times its aggregate cash investment in the Company, subject to Ms. Desmond's continued service. ( 4 )Represents time vesting restricted stock units granted on September 20, 2019 that vested/vest in two equal installments on September 20, 2020 and September 20, 2021, subject to Ms. Desmond's continued service (unless Ms. Desmond's service is terminated by the Company without cause, or by reason of Ms. Desmond's death or disability, in which case all of the unvested restricted stock units will accelerate and fully vest). ( 5 )Restricted stock units convert into common stock on a one-for-one basis. ( 6 )Represents time vesting restricted stock units granted on April 27, 2020 that vest in two equal installments on April 27, 2021 and April 27, 2022, subject to Ms. Desmond's continued service. ( 7 )Represents time vesting restricted stock units granted on April 27, 2020 that vest on April 27, 2021, subject to Ms. Desmond's continued service (unless Ms. Desmond's service is terminated by the Company without cause, or by reason of Ms. Desmond's death or disability, in which case all of the unvested restricted stock units will accelerate and fully vest).

Remarks: Exhibit List:Ex.24 - Power of Attorney

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).

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.