Sec Form 4 Filing - Martin Marcela @ Squarespace, Inc. - 2021-11-22

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 Martin Marcela 2. Issuer Name and Ticker or Trading Symbol Squarespace, Inc. [ SQSP] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) Chief Financial Officer (Last) (First) (Middle) C/O SQUARESPACE, INC.,, 225 VARICK STREET, 12TH FLOOR 3. Date of Earliest Transaction (MM/DD/YY) 11/22/2021 (Street) NEW YORK, NY10014 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 Class A Common Stock 11/22/2021 M 9,222 A $ 0 9,222 D Class A Common Stock 11/22/2021 F( 1 ) 3,367( 2 ) D $ 33.2 5,855 D

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 Restricted Stock Units $ 0 11/22/2021 M 9,222 ( 3 ) ( 3 ) Class A Common Stock 9,222 $ 0 52,258 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Martin Marcela C/O SQUARESPACE, INC., 225 VARICK STREET, 12TH FLOOR NEW YORK, NY10014 Chief Financial Officer Signatures /s/ Allyson Wilkinson, as Attorney-in-Fact 11/24/2021 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Shares withheld by Issuer to satisfy applicable withholding tax upon vesting of restricted stock units. ( 2 )This number represents an estimate of the number of shares of stock withheld to satisfy the reporting person's tax liability obligations in connection with the vesting of the restricted stock units and is subject to change as a result of the final calculation. The reporting person undertakes to amend this Form 4, if necessary, following the final calculation. ( 3 )On November 25, 2020, the reporting person received a grant of 61,480 restricted stock units, which vests as follows: (a) 15% on November 20, 2021, (b) 25% on November 20, 2022, (c) 30% on November 20, 2023 and (d) 30% on November 20, 2024, subject to continued employment through the applicable vesting date, provided, that if such date fallson a weekend or holiday, the vesting date shall be the first business day after such date.

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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