Adicet Bio, Inc. — Director's Dealing 2023

Jun 2, 2023

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Adicet Bio, Inc. (ACET)
CIK: 0001720580
Period of Report: 2023-06-01

Reporting Person: Sinclair Andrew (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2023-06-01	Common Stock	A	5900	$0.00	Acquired	5900	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2023-06-01	Stock Option (Right to Buy)	$5.195	A	26400	Acquired	2033-05-31	Common Stock (26400)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	2115385	Indirect

Footnotes

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.