Andrew Sinclair - Jun 1, 2023 Form 4 Insider Report for Adicet Bio, Inc. (ACET)

Role: Director
Signature: /s/ Nick Harvey, Attorney-in-Fact
Stock symbol: ACET
Transactions as of: Jun 1, 2023
Transactions value $: $0
Form type: 4
Date filed: 6/2/2023, 05:46 PM
Previous filing: May 26, 2023
Next filing: Aug 16, 2023

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	ACET	Common Stock	Award	$0	+5.9K		$0.00	5.9K	Jun 1, 2023	Direct	F1
holding	ACET	Common Stock						2.12M	Jun 1, 2023	See Footnote	F2, F3

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	+26.4K		$0.00	26.4K	Jun 1, 2023	Common Stock	26.4K	$5.20	Direct	F4

* 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 (a) the first anniversary of the grant date or (b) 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 are held by Abingworth Bioventures 8 LP ("ABV 8"). Abingworth Bioventures 8 GP LP ("Abingworth GP") serves as the general partner of ABV 8. Abingworth General Partner 8 LLP ("Abingworth GP 8"), serves as the general partner of Abingworth GP. ABV 8 (acting by its general partner Abingworth GP, acting by its general partner Abingworth GP 8) has delegated to Abingworth LLP, all investment and dispositive power over the securities held by ABV 8. The Reporting Person is a Partner and Portfolio Manager of Abingworth LLP.
F3	An investment committee approves investment and voting decisions by a majority vote, and no individual member has the sole control or voting power over the shares held by ABV 8. The Reporting Person is a member of the investment committee of ABV 8. From time to time, the investment committee may delegate investment and voting authority over certain securities held by ABV 8 to employees of Abingworth LLP, subject to the supervision and oversight of the investment committee, including any limits on such authority imposed by the investment committee in its discretion and the right of the investment committee to revoke such authority at any time. The Reporting Person disclaims beneficial ownership of such shares, except to the extent of his pecuniary interest therein, if any.
F4	These shares shall vest in full on the earlier to occur of (a) the first anniversary of the grant date or (b) 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.