Sec Form 4 Filing - O'Connor Courtenay @ Squarespace, Inc. - 2024-02-20

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

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 O'Connor Courtenay 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) General Counsel and Secretary (Last) (First) (Middle) C/O SQUARESPACE, INC.,225 VARICK ST,, 12TH FLOOR 3. Date of Earliest Transaction (MM/DD/YY) 02/20/2024 (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 02/20/2024 M 7,889 A $ 0 46,273 D Class A Common Stock 02/20/2024 M 6,444 A $ 0 52,717 D Class A Common Stock 02/20/2024 M 3,504 A $ 0 56,221 D Class A Common Stock 02/20/2024 M 17,931 A $ 0 74,152 D Class A Common Stock 02/20/2024 F( 1 ) 15,146 D $ 31.25 59,006 D Class A Common Stock 02/21/2024 M 12,987 A $ 0 71,993 D Class A Common Stock 02/21/2024 F( 1 ) 7,182 D $ 30.94 64,811 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 02/20/2024 M 7,889 ( 2 ) ( 2 ) Class A Common Stock 7,889 $ 0 0 D Restricted Stock Units $ 0 02/20/2024 M 6,444 ( 3 ) ( 3 ) Class A Common Stock 6,444 $ 0 6,447 D Restricted Stock Units $ 0 02/20/2024 M 3,504 ( 4 ) ( 4 ) Class A Common Stock 3,504 $ 0 28,038 D Restricted Stock Units $ 0 02/20/2024 M 17,931 ( 5 ) ( 5 ) Class A Common Stock 17,931 $ 0 53,796 D Performance Restricted Stock Units $ 0 02/21/2024 A 38,963 ( 6 ) ( 6 ) Class A Common Stock 38,963 $ 0 38,963 D Performance Restricted Stock Units $ 0 02/21/2024 M 12,987 ( 6 ) ( 6 ) Class A Common Stock 12,987 $ 0 25,976 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other O'Connor Courtenay C/O SQUARESPACE, INC.,225 VARICK ST, 12TH FLOOR NEW YORK, NY10014 General Counsel and Secretary Signatures /s/ Allyson Wilkinson, as Attorney-in-Fact 02/22/2024 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 )The restricted stock units vested on February 20, 2024. ( 3 )On January 20, 2021, the reporting person received a grant of 25,779 restricted stock units, which vests as follows: (a) 25% on February 20, 2022, (b) 25% on February 20, 2023, (c) 25% on February 20, 2024 and (d) 25% on February 20, 2025, subject to continued employment through the applicable vesting date, provided, that if such date falls on a weekend or holiday, the vesting date shall be the first business day after such date. ( < /a>4 )On February 22, 2022, the reporting person received a grant of 56,072 restricted stock units, which vests as follows: (a) 25% on February 20, 2023 and (b) 6.25% quarterly thereafter, subject to continued employment through the applicable vesting date, provided, that if such date falls on a weekend or holiday, the vesting date shall be the first business day after such date. ( 5 )On March 3, 2023, the reporting person received a grant of 71,727 restricted stock units, which vests as follows: (a) 25% on February 20, 2024 and (b) 6.25% quarterly thereafter, subject to continued employment through the applicable vesting date, provided, that if such date falls on a weekend or holiday, the vesting date shall be the first business day after such date. ( 6 )On March 3, 2023, the reporting person received a grant of restricted stock units, eligible to vest subject to the achievement of certain performance criteria and the satisfaction of service conditions. On February 21, 2024, the Compensation Committee determined that the performance criteria was met, resulting in the reporting person earning 38,963 restricted stock units that shall vest upon satisfaction of the following service conditions: (a) one-third immediately vested upon certification by the Compensation Committee on February 21, 2024, (b) one-third on February 20, 2025 and (c) one-third on February 20, 2026, subject to continued employment through the applicable vesting date, provided, that if such date falls on 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).

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.