Andrew Sinclair - 11 Jun 2025 Form 4 Insider Report for Adicet Bio, Inc. (ACET)

Role: Director
Signature: /s/ Nick Harvey, Attorney-in-Fact
Issuer symbol: ACET
Transactions as of: 11 Jun 2025
Net transactions value: $0
Form type: 4
Filing time: 13 Jun 2025, 16:04:26 UTC
Previous filing: 09 Jun 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Sinclair Andrew	Director	C/O ADICET BIO, INC., 131 DARTMOUTH STREET, FLOOR 3, BOSTON	/s/ Nick Harvey, Attorney-in-Fact	13 Jun 2025	0001762451

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	ACET	Common Stock	Award	$0	+5,900	+50%	$0.000000	17,700	11 Jun 2025	Direct	F1

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	ACET	Stock Option (Right to Buy)	Award	$0	+26,400		$0.000000	26,400	11 Jun 2025	Common Stock	26,400	$0.7800	Direct	F2

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	The Reporting Person was issued Restricted Stock Units ("RSUs"). Each RSU represents a contingent right to receive one share of Common Stock. The RSUs shall vest in full on the earlier to occur of (i) the first anniversary of the grant date or (ii) the date of the next annual meeting of stockholders following the grant date, subject to the Reporting Person's continued service on the Issuer's board of directors. The RSUs may be settled only by delivering shares of Common Stock, and thus, the grant is being reported in Table I as allowed per SEC guidance.
F2	These shares shall vest in full on the earlier to occur of (i) the first anniversary of the grant date or (ii) the date of the next annual meeting of stockholders following the grant date, subject to the Reporting Person's continued service on the Issuer's board of directors.

Content

The Reporting Person was issued Restricted Stock Units ("RSUs"). Each RSU represents a contingent right to receive one share of Common Stock. The RSUs shall vest in full on the earlier to occur of (i) the first anniversary of the grant date or (ii) the date of the next annual meeting of stockholders following the grant date, subject to the Reporting Person's continued service on the Issuer's board of directors. The RSUs may be settled only by delivering shares of Common Stock, and thus, the grant is being reported in Table I as allowed per SEC guidance.

These shares shall vest in full on the earlier to occur of (i) the first anniversary of the grant date or (ii) the date of the next annual meeting of stockholders following the grant date, subject to the Reporting Person's continued service on the Issuer's board of directors.