STOCK TITAN

Acrivon Therapeutics (ACRV) leaders receive new RSU and stock grants

Filing Impact
(Neutral)
Filing Sentiment
(Neutral)
Form Type
4

Rhea-AI Filing Summary

Acrivon Therapeutics, Inc. reported equity awards to senior leaders in the form of restricted stock units (RSUs) and common stock grants coded as acquisitions. One award covers 72,706 RSUs at a grant price of $0.00 per share, and another covers 180,095 shares of Common Stock at $0.00 per share.

Each RSU represents a contingent right to receive one share of Common Stock. Of the RSUs, 16.67% are scheduled to vest on November 18, 2026, with the remaining units vesting in 10 substantially equal quarterly installments, subject to the executive’s continuous service. After these grants, one indirect holding totals 386,343 shares and one direct holding totals 2,259,046 shares, with certain shares held by each executive’s spouse and the non-holding spouse disclaiming beneficial ownership except for any pecuniary interest.

Positive

  • None.

Negative

  • None.
Insider Blume-Jensen Peter, Masson Kristina
Role President and CEO | EVP - Business Operations
Type Security Shares Price Value
Grant/Award Common Stock 180,095 $0.00 --
Grant/Award Common Stock 72,706 $0.00 --
Holdings After Transaction: Common Stock — 2,259,046 shares (Direct, null); Common Stock — 386,343 shares (Indirect, See Footnote)
Footnotes (1)
  1. These shares represent restricted stock units ("RSUs"). Each RSU represents a contingent right to receive one share of the Issuer's Common Stock. Of these RSUs, 16.67% of the RSUs shall vest on November 18, 2026, and the remaining RSUs shall vest in 10 substantially equal quarterly installments thereafter, in each case subject to the Reporting Person's continuous service through each such vesting date. These securities are held by President and CEO, Dr. Peter Blume-Jensen, who is also Dr. Kristina Masson's spouse. Dr. Masson disclaims beneficial ownership of such securities except to the extent of her pecuniary interest therein. These securities are held by co-founder and EVP, Dr. Kristina Masson, who is also Dr. Blume-Jensen's spouse. Dr. Blume-Jensen disclaims beneficial ownership of such securities except to the extent of his pecuniary interest therein.
RSUs granted 72,706 units Restricted stock units granted on May 18, 2026
Common shares granted 180,095 shares Common Stock grant on May 18, 2026
RSU vesting tranche 16.67% Initial RSU vesting on November 18, 2026
Remaining RSU vesting schedule 10 quarterly installments RSUs vest in substantially equal installments after initial vest
Indirect holdings after grant 386,343 shares Total indirect Common Stock position following transaction
Direct holdings after grant 2,259,046 shares Total direct Common Stock position following transaction
Grant price per share $0.00/share Price for both RSU and stock grants
restricted stock units ("RSUs") financial
"These shares represent restricted stock units ("RSUs"). Each RSU represents a contingent right to receive one share..."
Restricted stock units (RSUs) are a company promise to give an employee shares of stock (or cash equivalent) in the future, but only after certain conditions—usually staying with the company for a set time or hitting performance goals—are met. Investors watch RSUs because when they vest they increase the number of shares outstanding and can lead insiders to sell shares, affecting share price, company dilution and the true cost of employee pay.
contingent right financial
"Each RSU represents a contingent right to receive one share of the Issuer's Common Stock."
pecuniary interest financial
"Dr. Masson disclaims beneficial ownership of such securities except to the extent of her pecuniary interest therein."
continuous service financial
"in each case subject to the Reporting Person's continuous service through each such vesting date."
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*
Blume-Jensen Peter

(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)
XDirector10% Owner
XOfficer (give title below)Other (specify below)
President and CEO
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
05/18/2026
6. Individual or Joint/Group Filing (Check Applicable Line)
Form filed by One Reporting Person
XForm 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
Common Stock05/18/2026A(1)180,095A$02,259,046D(2)
Common Stock05/18/2026A(1)72,706A$0386,343ISee Footnote(3)
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
1. Name and Address of Reporting Person*
Blume-Jensen Peter

(Last)(First)(Middle)
C/O ACRIVON THERAPEUTICS, INC.
480 ARSENAL WAY, SUITE 100

(Street)
WATERTOWN MASSACHUSETTS 02472

(City)(State)(Zip)

UNITED STATES

(Country)

Relationship of Reporting Person(s) to Issuer
XDirector10% Owner
XOfficer (give title below)Other (specify below)
President and CEO
1. Name and Address of Reporting Person*
Masson Kristina

(Last)(First)(Middle)
C/O ACRIVON THERAPEUTICS, INC.
480 ARSENAL WAY, SUITE 100

(Street)
WATERTOWN MASSACHUSETTS 02472

(City)(State)(Zip)

UNITED STATES

(Country)

Relationship of Reporting Person(s) to Issuer
XDirector10% Owner
XOfficer (give title below)Other (specify below)
EVP - Business Operations
Explanation of Responses:
1. These shares represent restricted stock units ("RSUs"). Each RSU represents a contingent right to receive one share of the Issuer's Common Stock. Of these RSUs, 16.67% of the RSUs shall vest on November 18, 2026, and the remaining RSUs shall vest in 10 substantially equal quarterly installments thereafter, in each case subject to the Reporting Person's continuous service through each such vesting date.
2. These securities are held by President and CEO, Dr. Peter Blume-Jensen, who is also Dr. Kristina Masson's spouse. Dr. Masson disclaims beneficial ownership of such securities except to the extent of her pecuniary interest therein.
3. These securities are held by co-founder and EVP, Dr. Kristina Masson, who is also Dr. Blume-Jensen's spouse. Dr. Blume-Jensen disclaims beneficial ownership of such securities except to the extent of his pecuniary interest therein.
/s/ Adam D. Levy, Attorney-in-Fact for Peter Blume-Jensen05/20/2026
/s/ Adam D. Levy, Attorney-in-Fact for Kristina Masson05/20/2026
** 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)

FAQ

What insider transactions did Acrivon Therapeutics (ACRV) report on this Form 4?

The Form 4 reports two equity grant transactions classified as acquisitions. One is a 72,706-unit restricted stock unit (RSU) award and the other is a 180,095-share Common Stock grant, both at a grant price of $0.00 per share to senior executives.

How many Acrivon Therapeutics (ACRV) RSUs were granted and how do they vest?

A total of 72,706 restricted stock units were granted to an executive. Each RSU equals one Acrivon common share. About 16.67% vest on November 18, 2026, with the remaining RSUs vesting in 10 substantially equal quarterly installments, subject to continuous service.

What are the post-grant share holdings reported in this ACRV Form 4 filing?

After the reported grants, one indirect holding totals 386,343 Acrivon common shares, while one direct holding totals 2,259,046 shares. These figures reflect the positions immediately following the award transactions described in the Form 4 filing for the two reporting executives.

Do the ACRV executives have any conditions tied to these RSU awards?

Yes. The RSUs vest only if the reporting executive maintains continuous service through each vesting date. Initial vesting of 16.67% occurs on November 18, 2026, and the remaining units vest over 10 subsequent quarterly installments under the same service condition.

How is spousal ownership treated in this Acrivon Therapeutics (ACRV) Form 4?

Some securities are held by one spouse who is also an executive, while the other spouse is a reporting person. Each non-holding spouse disclaims beneficial ownership of the securities held by their partner, except to the extent of any pecuniary interest in those shares.