[Form 4] HOOKIPA Pharma Inc. Insider Trading Activity

Rhea-AI Filing Summary

HOOKIPA Pharma (HOOK) Form 4: On 22 Jul 2025, Chief Executive Officer and Director Malte Peters sold 29,176 common shares at $0.92 per share (≈ $26.8k proceeds). The sale was executed under a pre-arranged “sell-to-cover” program to satisfy tax-withholding obligations triggered by the vesting of RSUs granted on 22 Jul 2024; therefore it was not a discretionary trade. After the transaction, Peters holds 79,519 shares, all owned directly.

No derivative securities were bought or sold, and no additional corporate developments were disclosed. The filing is routine insider-ownership maintenance rather than a signal of changed outlook, but investors may note the reduced float at the margin.

Insights

Securities Analyst

TL;DR: Routine tax-related insider sale; neutral impact on HOOK valuation.

The Form 4 reveals a small (< $30k) “sell-to-cover” transaction by the CEO, a standard mechanism to fund payroll taxes upon RSU vesting. The remaining 79.5k-share stake demonstrates continued alignment of management with shareholders. Because the sale was not discretionary and represents less than one trading day of HOOK’s average volume, price impact should be negligible. No new information on operations, guidance, or liquidity emerged, so the filing is best viewed as housekeeping rather than a directional signal.

Corporate Governance Expert

TL;DR: Compliance filing confirms proper use of sell-to-cover; governance posture intact.

The company followed best practices by executing withholding via open-market sale and promptly disclosing under Section 16(a). The CEO’s retention of the majority of vested stock mitigates concerns about commitment. From a governance lens, there is no red flag: timing aligns with vesting, price matches market, and no pattern of large discretionary disposals exists. Impact on shareholder perception is neutral.

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

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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

1. Name and Address of Reporting Person^*

Peters Malte

(Last) (First) (Middle)

C/O HOOKIPA PHARMA INC.

350 FIFTH AVENUE, 72ND FLOOR, SUITE 7240

(Street)

NEW YORK NY 10118

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
HOOKIPA Pharma Inc. [ HOOK ]

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

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

3. Date of Earliest Transaction (Month/Day/Year)
07/22/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

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

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

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)
			Code	V	Amount	(A) or (D)	Price
Common Stock	07/22/2025		S(1)		29,176	D	$0.92	79,519	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)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. This sale was affected pursuant to a "sell to cover" arrangement adopted by the Issuer to satisfy the tax withholding obligations triggered by the vesting of restricted stock units granted on July 22, 2024 and does not represent a discretionary trade by the Reporting Person. Each restricted stock unit represents a contingent right to receive one share of common stock of the Issuer.

	/s/ Malte Peters	07/23/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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