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  4. [Form 4] Acrivon Therapeutics, Inc. Insider Trading Activity

RA Capital funds add 3,888,888 Acrivon (ACRV) shares at $1.80

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

Rhea-AI Filing Summary

Acrivon Therapeutics, Inc. reported that investment entities affiliated with RA Capital acquired additional common stock through a grant or similar award. On the reported date, these entities indirectly obtained 3,888,888 shares of common stock at $1.80 per share, bringing one aggregated indirect position to 11,803,094 shares following the transaction. Another indirect holding line shows 426,302 shares after the same date. The filing notes that RA Capital Management, L.P., its general partner, and individuals Peter Kolchinsky and Rajeev Shah disclaim beneficial ownership of the reported securities except to the extent of their pecuniary interest.

Positive

  • None.

Negative

  • None.
Insider RA CAPITAL MANAGEMENT, L.P., RA Capital Healthcare Fund LP, RA Capital Nexus Fund II, L.P., Kolchinsky Peter, Shah Rajeev M.
Role null | null | null | null | null
Type Security Shares Price Value
Grant/Award Common Stock 3,888,888 $1.80 $7.00M
holding Common Stock -- -- --
Holdings After Transaction: Common Stock — 11,803,094 shares (Indirect, See footnotes)
Footnotes (1)
  1. Held directly by RA Capital Healthcare Fund, L.P. (the "Fund"). RA Capital Management, L.P. (the "Adviser") is the investment manager for the Fund and RA Capital Nexus Fund II, L.P. (the "Nexus Fund II"). The general partner of the Adviser is RA Capital Management GP, LLC (the "Adviser GP"), of which Dr. Peter Kolchinsky and Mr. Rajeev Shah are the managing members. The Adviser, the Adviser GP, Dr. Kolchinsky, and Mr. Shah disclaim beneficial ownership of any of the reported securities, except to the extent of their pecuniary interest therein. Held directly by Nexus Fund II.
Grant/award shares acquired 3,888,888 shares Common Stock grant or other acquisition on 2026-04-22
Acquisition price per share $1.80 per share Price for 3,888,888 Common Stock shares acquired
Indirect holdings after grant 11,803,094 shares Total indirect Common Stock position following acquisition
Additional indirect holding line 426,302 shares Separate indirect Common Stock position as of 2026-04-22
Grant, award, or other acquisition financial
"transaction_code_description: Grant, award, or other acquisition"
indirect financial
"ownership_type: indirect; direct_or_indirect: I"
beneficial ownership financial
"disclaim beneficial ownership of any of the reported securities"
Beneficial ownership means the person or entity that actually enjoys the benefits of owning shares or other assets — such as receiving dividends, voting rights, or price gains — even if the legal title is held in another name. For investors it matters because knowing who truly controls and profits from a company reveals who can influence decisions, exposes potential conflicts of interest or hidden concentration of power, and affects transparency and risk in the stock.
pecuniary interest financial
"except to the extent of their pecuniary interest therein"
investment manager financial
"RA Capital Management, L.P. is the investment manager for the Fund"
Form 4 Insider Transactions: What Each Field Means →
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*
RA CAPITAL MANAGEMENT, L.P.
(Last)(First)(Middle)
200 BERKELEY STREET, 18TH FLOOR
(Street)
BOSTON MASSACHUSETTS 02116
(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)
XDirectorX10% Owner
Officer (give title below)Other (specify below)
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
04/22/2026		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 Stock04/22/2026A3,888,888A$1.811,803,094ISee footnotes(1)(2)
Common Stock426,302ISee footnotes(2)(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*
RA CAPITAL MANAGEMENT, L.P.
(Last)(First)(Middle)
200 BERKELEY STREET, 18TH FLOOR
(Street)
BOSTON MASSACHUSETTS 02116
(City)(State)(Zip)
UNITED STATES
(Country)
Relationship of Reporting Person(s) to Issuer
XDirectorX10% Owner
Officer (give title below)Other (specify below)
1. Name and Address of Reporting Person*
RA Capital Healthcare Fund LP
(Last)(First)(Middle)
200 BERKELEY STREET, 18TH FLOOR
(Street)
BOSTON MASSACHUSETTS 02116
(City)(State)(Zip)
UNITED STATES
(Country)
Relationship of Reporting Person(s) to Issuer
XDirectorX10% Owner
Officer (give title below)Other (specify below)
1. Name and Address of Reporting Person*
RA Capital Nexus Fund II, L.P.
(Last)(First)(Middle)
200 BERKELEY STREET, 18TH FLOOR
(Street)
BOSTON MASSACHUSETTS 02116
(City)(State)(Zip)
UNITED STATES
(Country)
Relationship of Reporting Person(s) to Issuer
XDirector10% Owner
Officer (give title below)Other (specify below)
1. Name and Address of Reporting Person*
Kolchinsky Peter
(Last)(First)(Middle)
C/O RA CAPITAL MANAGEMENT, L.P.
200 BERKELEY STREET, 18TH FLOOR
(Street)
BOSTON MASSACHUSETTS 02116
(City)(State)(Zip)
UNITED STATES
(Country)
Relationship of Reporting Person(s) to Issuer
XDirectorX10% Owner
Officer (give title below)Other (specify below)
1. Name and Address of Reporting Person*
Shah Rajeev M.
(Last)(First)(Middle)
C/O RA CAPITAL MANAGEMENT, L.P.
200 BERKELEY STREET, 18TH FLOOR
(Street)
BOSTON MASSACHUSETTS 02116
(City)(State)(Zip)
UNITED STATES
(Country)
Relationship of Reporting Person(s) to Issuer
XDirectorX10% Owner
Officer (give title below)Other (specify below)
Explanation of Responses:
1. Held directly by RA Capital Healthcare Fund, L.P. (the "Fund").
2. RA Capital Management, L.P. (the "Adviser") is the investment manager for the Fund and RA Capital Nexus Fund II, L.P. (the "Nexus Fund II"). The general partner of the Adviser is RA Capital Management GP, LLC (the "Adviser GP"), of which Dr. Peter Kolchinsky and Mr. Rajeev Shah are the managing members. The Adviser, the Adviser GP, Dr. Kolchinsky, and Mr. Shah disclaim beneficial ownership of any of the reported securities, except to the extent of their pecuniary interest therein.
3. Held directly by Nexus Fund II.
Remarks:
Dr. Derek DiRocco, a Partner of the Adviser, serves on the Issuer's board of directors.
/s/ Peter Kolchinsky, Manager of RA Capital Management, L.P.04/23/2026
/s/ Peter Kolchinsky, Manager of RA Capital Healthcare Fund GP, LLC the General Partner of RA Capital Healthcare Fund, L.P.04/23/2026
/s/ Peter Kolchinsky, Manager of RA Capital Nexus Fund II GP, LLC the General Partner of RA Capital Nexus Fund II, L.P.04/23/2026
/s/ Peter Kolchinsky, individually04/23/2026
/s/ Rajeev Shah, individually04/23/2026
** 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)

Source: View Original Filing on SEC EDGAR

FAQ

What insider transaction did Acrivon Therapeutics (ACRV) report from RA Capital?

Acrivon Therapeutics reported that RA Capital–affiliated entities indirectly acquired 3,888,888 shares of common stock. The acquisition was coded as a grant, award, or other acquisition at $1.80 per share, rather than an open‑market purchase, and increased their reported indirect holdings.

At what price were the new Acrivon Therapeutics (ACRV) shares acquired?

The newly reported Acrivon Therapeutics shares were acquired at $1.80 per share. The Form 4 classifies this as a grant, award, or other acquisition, indicating a compensation or transaction-related issuance rather than a standard open‑market buy on a stock exchange.

How many Acrivon Therapeutics (ACRV) shares do RA Capital entities hold after this filing?

After the reported grant, one RA Capital–associated indirect holding shows 11,803,094 shares of Acrivon common stock. A separate holding line reflects 426,302 shares indirectly held. These positions are reported together, giving investors a clearer view of RA Capital–related ownership levels.

Who is identified in the Acrivon Therapeutics (ACRV) Form 4 and how are shares held?

The Form 4 lists RA Capital Management, L.P., RA Capital Healthcare Fund LP, RA Capital Nexus Fund II, L.P., Peter Kolchinsky, and Rajeev Shah as reporting persons. The shares are held indirectly through funds, with certain parties disclaiming beneficial ownership beyond their pecuniary interest.

Is the RA Capital transaction in Acrivon Therapeutics (ACRV) an open-market purchase?

The transaction is not classified as an open‑market purchase. It is coded as a grant, award, or other acquisition of 3,888,888 common shares at $1.80, indicating issuance or award terms rather than buying shares directly on the open market through typical trading activity.