Acrivon Therapeutics legal chief sells 294 shares

Q: How many ACRV shares did Chief Legal Officer Mary Miller sell?

Mary Miller reported the sale of 294 shares of common stock on October 5, 2026, at a weighted average price of $1.99 per share. She directly held 81,715 shares following the transaction.

A broker sold 337 shares for a group of employees, including Miller, and allocated proceeds pro rata.

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Form Type

Rhea-AI Filing Summary

Acrivon Therapeutics, Inc. (ACRV) Chief Legal Officer Mary Miller reported the sale of 294 shares of common stock on October 5, 2026, at a weighted average price of $1.99 per share. The shares were sold automatically to satisfy mandatory tax withholding upon vesting of restricted stock units. Miller directly held 81,715 shares following the transaction.

Insider Trade Summary

Net Seller: 294 shares

Net Sell 1 txn

Insider Miller Mary

Role Chief Legal Officer

Sold 294 shs ($585.06)

Type	Security	Shares	Price	Value
Sale	Common Stock ^{F1, F2}	294	$1.99	$585.06

Holdings After Transaction: Common Stock — 81,715 shares (Direct)

Footnotes (2)

F1. Shares sold automatically to satisfy the mandatory tax withholding requirement upon vesting of restricted stock units.
F2. The price reported in Column 4 above reflects the weighted average price of 337 shares sold by a broker on October 5, 2026, to satisfy the payment of withholding tax liability of a group of employees of the Issuer, including the reporting person. The proceeds of all such sales were allocated to the employees, including the reporting person, on a pro rata basis.

Key Figures

Shares sold: 294 shares Weighted average price: $1.99 per share Shares held following transaction: 81,715 shares +1 more

4 metrics

Shares sold 294 shares Mary Miller's transaction on October 5, 2026

Weighted average price $1.99 per share Price reported for shares sold on October 5, 2026

Shares held following transaction 81,715 shares Mary Miller's direct holdings

Group shares sold by broker 337 shares Shares sold for a group of employees on October 5, 2026

Key Terms

restricted stock units, weighted average price, mandatory tax withholding requirement, pro rata basis

4 terms

restricted stock units technical

"upon vesting of restricted stock units"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

weighted average price financial

"reflects the weighted average price of 337 shares"

Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.

mandatory tax withholding requirement financial

"satisfy the mandatory tax withholding requirement"

pro rata basis financial

"allocated to the employees ... on a pro rata basis"

A "pro rata basis" means dividing or distributing something proportionally according to each person's share or interest. For example, if a group shares costs or profits, each person receives or pays a portion that reflects their contribution or ownership percentage. This method ensures fairness by allocating resources in line with individual stakes, which is important for investors to understand how gains, losses, or costs are fairly shared.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

How many ACRV shares did Chief Legal Officer Mary Miller sell?

Mary Miller reported the sale of 294 shares of common stock on October 5, 2026, at a weighted average price of $1.99 per share. She directly held 81,715 shares following the transaction.

Why were Mary Miller's ACRV shares sold?

The shares were sold automatically to satisfy the mandatory tax withholding requirement upon vesting of restricted stock units. A broker sold 337 shares for a group of employees, including Miller, and the proceeds were allocated to the employees on a pro rata basis.

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

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Available on EDGAR 10/07/2026 - 05:02 PM Accepted by SEC EDGAR 10/07/2026 - 05:02 PM

SEC Form 4

FORM 4

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
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^*

Miller Mary

(Last)

(First)

(Middle)

C/O ACRIVON THERAPEUTICS, INC.

480 ARSENAL WAY, SUITE 100

(Street)

WATERTOWN

MASSACHUSETTS

02472

(City)

(State)

(Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
Acrivon Therapeutics, Inc. [ ACRV ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director	10% Owner
X	Officer (give title below)	Other (specify below)
	Chief Legal Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
10/05/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form 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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	10/05/2026		S⁽¹⁾		294	D	$1.99⁽²⁾	81,715	D

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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)

Explanation of Responses:

1. Shares sold automatically to satisfy the mandatory tax withholding requirement upon vesting of restricted stock units.

2. The price reported in Column 4 above reflects the weighted average price of 337 shares sold by a broker on October 5, 2026, to satisfy the payment of withholding tax liability of a group of employees of the Issuer, including the reporting person. The proceeds of all such sales were allocated to the employees, including the reporting person, on a pro rata basis.

	/s/ Adam D. Levy, Attorney-in-Fact	10/07/2026
	** Signature of Reporting Person	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).
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)

Source: View Original Filing on SEC EDGAR