STOCK TITAN

Adicet Bio, Inc. (ACET) grants 18,300 stock options to Chief Medical Officer

(Neutral)
(Neutral)
Form Type
4

Rhea-AI Filing Summary

Adicet Bio, Inc. reported that its Chief Medical Officer, Klickstein Lloyd, received a grant of stock options covering 18,300 shares of common stock at an exercise price of $9.16 per share. According to the award terms, 1/6th of the options vest on each of the next six monthly anniversaries of August 5, 2026, subject to continued service, and the options expire on August 4, 2036.

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Insider Klickstein Lloyd
Role Chief Medical Officer
Type Security Shares Price Value
Grant/Award Stock Option (Right to Buy) F1 18,300 $0.00 $0.00
Holdings After Transaction: Stock Option (Right to Buy) — 18,300 shares (Direct)
Footnotes (1)
  1. F1. 1/6th of the shares subject to this option shall vest and become exercisable on each of the next six (6) monthly anniversaries of August 5, 2026, subject to the Reporting Person's continued service with the Issuer as of the applicable vesting dates.
Stock options granted 18,300 shares Stock Option (Right to Buy) granted to Klickstein Lloyd on August 5, 2026
Exercise price $9.16 per share Exercise price for the 18,300 stock options granted
Expiration date August 4, 2036 Expiration of the stock options granted to Klickstein Lloyd
Vesting schedule 1/6th monthly over six months 1/6th vests on each of the next six monthly anniversaries of August 5, 2026
Stock Option (Right to Buy) financial
"security_title: "Stock Option (Right to Buy)" for the reported grant"
exercise price financial
"conversion_or_exercise_price: "9.1600" indicating the exercise price per share"
The exercise price is the fixed amount at which you can buy or sell an asset, like a stock, when using an options contract. It matters because it helps determine whether exercising the option will be profitable or not, depending on the current market price. Think of it as the set price you agree on today to buy or sell later.
vesting financial
"shares subject to this option shall vest and become exercisable on each of the next six"
Vesting is the process by which you earn full ownership of something, like company stock or a retirement benefit, over time. It’s like earning the right to keep a gift piece by piece the longer you stay with a company, making sure employees stay committed before they receive all the benefits.
expiration date financial
"expiration_date: "2036-08-04" specifying the option’s expiration date"
The expiration date is the deadline after which a financial contract, such as an option or a futures agreement, is no longer valid or can be exercised. It matters to investors because it determines the timeframe during which they can take action or benefit from the contract, similar to how a coupon or a food item has a limited period of usefulness. Once the expiration date passes, the contract loses its value or ability to be used.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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FAQ

What stock option grant did ACET’s Chief Medical Officer receive?

Klickstein Lloyd received a grant of 18,300 stock options, each for one share of Adicet Bio common stock, with an exercise price of $9.16 per share. The options are classified as a “Stock Option (Right to Buy)” and were granted on August 5, 2026.

When do Klickstein Lloyd’s new ACET stock options vest?

The options vest in six equal installments, with 1/6th of the shares vesting on each of the next six monthly anniversaries of August 5, 2026. Vesting is explicitly conditioned on the reporting person’s continued service with Adicet Bio on each applicable vesting date.

What is the exercise price and term of the new ACET options?

The stock options have an exercise price of $9.16 per share and an expiration date of August 4, 2036. This gives the holder the right to buy Adicet Bio common stock at $9.16 per share until that expiration date, subject to vesting.

How many Adicet Bio (ACET) shares are covered by the option grant?

The grant covers 18,300 underlying shares of Adicet Bio common stock. Each option represents the right to purchase one share, so the total potential share acquisition from this award equals 18,300 shares, assuming all options vest and are exercised.

Is the new ACET option grant a direct holding for Klickstein Lloyd?

Yes. The filing identifies the ownership of these 18,300 stock options as direct. Following this grant, total stock options held in this award are 18,300, reflecting the full amount of the newly granted, unexercised options reported for Klickstein Lloyd.
SEC Form 4
FORM 4UNITED 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
or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number:3235-0287
Estimated average burden
hours per response:0.5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.
1. Name and Address of Reporting Person*
Klickstein Lloyd

(Last)(First)(Middle)
C/O ADICET BIO, INC.
131 DARTMOUTH STREET, FLOOR 3

(Street)
BOSTON MASSACHUSETTS 02116

(City)(State)(Zip)

UNITED STATES

(Country)
2. Issuer Name and Ticker or Trading Symbol
Adicet Bio, Inc. [ ACET ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
XDirector10% Owner
XOfficer (give title below)Other (specify below)
Chief Medical Officer
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
08/05/2026
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form filed by More than One Reporting Person
4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year)2A. Deemed Execution Date, if any (Month/Day/Year)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)
CodeVAmount(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 (Month/Day/Year)3A. Deemed Execution Date, if any (Month/Day/Year)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 (Month/Day/Year)7. Title and Amount of Securities Underlying Derivative Security (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: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Stock Option (Right to Buy)$9.1608/05/2026A18,300 (1)08/04/2036Common Stock18,300$0.0018,300D
Explanation of Responses:
1. 1/6th of the shares subject to this option shall vest and become exercisable on each of the next six (6) monthly anniversaries of August 5, 2026, subject to the Reporting Person's continued service with the Issuer as of the applicable vesting dates.
/s/ Nick Harvey, Attorney-in-Fact08/07/2026
** Signature of Reporting PersonDate
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.
* Form 4: SEC 1474 (03-26)