[Form 4] LAVA Therapeutics NV Insider Trading Activity

Rhea-AI Filing Summary

A director of LAVA Therapeutics N.V. (LVTX) reported a change in holdings on Form 4. On 11/13/2025, a stock option covering 33,390 common shares with a per share exercise price of $0.93 was cancelled. The option was cancelled under a Purchase Agreement between the issuer and XOMA Royalty Corporation. In exchange, the holder became entitled to cash and contingent value rights, calculated as the excess of $1.04 over the option’s exercise price multiplied by the number of underlying shares, plus one CVR for each in-the-money underlying share.

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

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X

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^*

Backstrom Jay T.

(Last) (First) (Middle)

C/O LAVA THERAPEUTICS N.V.

YALELAAN 62

(Street)

UTRECHT P7 3584 CM

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
LAVA Therapeutics NV [ LVTX ]

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

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

3. Date of Earliest Transaction (Month/Day/Year)
11/13/2025

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

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
Share Options (Right to Buy)	$0.93	11/13/2025		D			33,390	(1)	02/12/2035	Common Shares	33,390	$0	0	D

Explanation of Responses:

1. This option was cancelled pursuant to that certain Purchase Agreement, dated August 3, 2025, by and between the Issuer and XOMA Royalty Corporation (as amended, the "Purchase Agreement") in exchange for cash and contingent value rights ("CVRs") (without interest and net of applicable withholding tax and other applicable deductions) in an amount equal to (i) the excess of $1.04 over the per share exercise price of such option multiplied by the total number of shares underlying such in option and (ii) one CVR per share underlying such in-the-money option.

	/s/ Amy Garabedian, Attorney-in-Fact	11/17/2025
	** 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.

FAQ

What insider transaction did LAVA Therapeutics (LVTX) report on this Form 4?

A director of LAVA Therapeutics N.V. reported the cancellation of a stock option on 11/13/2025 and the related consideration received.

How many LAVA Therapeutics (LVTX) options were cancelled and at what exercise price?

The cancelled option covered 33,390 common shares of LAVA Therapeutics N.V. with a per share exercise price of $0.93.

What agreement governed the LVTX option cancellation reported on Form 4?

The option was cancelled under a Purchase Agreement dated August 3, 2025 between LAVA Therapeutics N.V. and XOMA Royalty Corporation.

What did the LAVA Therapeutics insider receive for the cancelled options?

The insider received cash and contingent value rights (CVRs), net of applicable taxes and deductions, as consideration for the cancelled option.

How was the cash consideration for the cancelled LVTX option calculated?

Cash was calculated as the excess of $1.04 over the per share exercise price of $0.93, multiplied by the total number of shares underlying the option.

How many CVRs are tied to the cancelled LAVA Therapeutics options?

The holder is entitled to one contingent value right (CVR) per share underlying each in-the-money option that was cancelled.