Sec Form 4 Filing - Davis Hugh M. @ Aclaris Therapeutics, Inc. - 2024-12-02

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 Davis Hugh M. 2. Issuer Name and Ticker or Trading Symbol Aclaris Therapeutics, Inc. [ ACRS] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X __ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) President and COO (Last) (First) (Middle) C/O ACLARIS THERAPEUTICS, INC., 701 LEE ROAD, SUITE 103 3. Date of Earliest Transaction (MM/DD/YY) 12/02/2024 (Street) WAYNE, PA19087 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

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 Employee Stock Option (Right to Buy) $ 3.96 12/02/2024 A 375,000 ( 1 ) ( 2 ) 12/01/2034 Common Stock 375,000 $ 0 375,000 D Restricted Stock Units ( 3 ) 12/02/2024 A 107,000 ( 1 ) ( 4 ) 12/01/2034 Common Stock 107,000 $ 0 107,000 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Davis Hugh M. C/O ACLARIS THERAPEUTICS, INC. 701 LEE ROAD, SUITE 103 WAYNE, PA19087 X President and COO Signatures /s/ Matthew Rothman, Attorney-in-Fact 12/03/2024 Signature of Reporting Person Date

Explanation of Responses:

( 1 )The securities were granted pursuant to the Issuer's 2024 Inducement Plan (the "Plan") as a material inducement to the Reporting Person's acceptance of employment with the Issuer in accordance with Nasdaq Listing Rule 5635(c)(4). ( 2 )Exercisable with respect to 25% of the shares subject to the option vesting on each of the first, second, third and fourth anniversaries of December 2, 2024 (in each case rounded down to the nearest whole share, except for the last vesting installment), subject to recipient's Continuous Service (as defined in the Plan) through each such date. ( 3 )Each restricted stock unit represents a contingent right to receive one share of common stock of the Issuer. ( 4 )Four year vesting with 25% of the shares subject to the restricted stock units vesting on each of the first, second, third and fourth anniversaries of December 2, 2024 (in each case rounded down to the nearest whole share, except for the last vesting installment), subject to recipient's Continuous Service through each 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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