Statement of Changes in Beneficial Ownership (Form 4)

FORM 4 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 that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES 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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(Print or Type Responses)

1. Name and Address of Reporting Person * Reisenauer Mark L 2. Issuer Name and Ticker or Trading Symbol Assertio Holdings, Inc. [ASRT] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) __X__ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) CEO (Last) (First) (Middle) ASSERTIO HOLDINGS, INC., 100 SOUTH SAUNDERS ROAD, SUITE 300 3. Date of Earliest Transaction (Month/Day/Year) 06/16/2026 (Street) LAKE FOREST, IL 60045 4. If Amendment, Date 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 (City) (State) (Zip) 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 06/16/2026 U 3,583(1)(2)(3)(4) D $ 0 0 D

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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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 Underlying Securities (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 of Derivative Security: 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
Restricted Stock Units	$ 0	06/16/2026		D			33,333	(4)	(4)	Common Stock	33,333	$ 0	0	D
Stock Option (Right to Buy)	$12.7515	06/16/2026		D			5,415(1)	(5)	(5)	Common Stock	5,415(1)	(5)	0	D
Stock Option (Right to Buy)	$12.372	06/16/2026		D			66,666	(5)	(5)	Common Stock	66,666	(5)	0	D
Stock Option (Right to Buy)	$11.77	06/16/2026		D			26,667	(5)	(5)	Common Stock	26,667	(5)	0	D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Reisenauer Mark L ASSERTIO HOLDINGS, INC. 100 SOUTH SAUNDERS ROAD, SUITE 300 LAKE FOREST, IL 60045	X		CEO

Signatures

/s/ Sam Schlessinger, Attorney-in-fact for Mark L. Reisenauer		06/16/2026
**Signature of Reporting Person		Date

Explanation of Responses:

*	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).
(1)	On December 26, 2025, the Issuer effected a 1-for-15 reverse stock split (the "Reverse Stock Split"). The number of securities reported on this Form 4 have been adjusted to reflect the Reverse Stock Split.
(2)	This Form 4 reports securities disposed of pursuant to the Agreement and Plan of Merger (the "Merger Agreement"), dated as of May 13, 2026, by and among Assertio Holdings, Inc. (the "Issuer"), Zydus Worldwide DMCC ("Parent"), Zara Merger Sub Inc., a wholly owned subsidiary of Parent ("Purchaser") and Zydus Pharmaceuticals (USA) Inc., pursuant to which Purchaser completed a tender offer (the "Offer") for all outstanding shares of common stock of the Issuer ("Company Common Stock") at a price of $23.50 per share in cash, without interest (the "Offer Price"), and thereafter merged with and into the Issuer, with the Issuer continuing as the surviving corporation and a wholly owned subsidiary of Parent (the "Merger"), effective as of June 16, 2026 (the "Effective Time"). At the Effective Time, each issued and outstanding share of Company Common Stock was cancelled and converted into the right [continues to Footnote 3]
(3)	[continues from Footnote 2] to receive the Offer Price, less any applicable withholding taxes.
(4)	Pursuant to the Merger Agreement, each restricted stock unit of the Issuer (each, a "Company RSU") that was outstanding but unvested immediately prior to the Effective Time became fully vested as of immediately prior to the Effective Time and, at the Effective Time, each outstanding Company RSU was cancelled and converted into the right to receive a cash payment, less any applicable withholding taxes, equal to the Offer Price.
(5)	Pursuant to the Merger Agreement, each option to purchase shares of Company Common Stock (each, a "Company Stock Option") that was outstanding immediately prior to the Effective Time, whether vested or unvested, with an exercise price per share less than the Offer Price, was cancelled at the Effective Time and converted into the right to receive a cash payment, less any applicable withholding taxes, equal to the product of (A) the excess of the Offer Price over the exercise price payable per share of Company Common Stock under such Company Stock Option, multiplied by (B) the total number of shares of Company Common Stock subject to such Company Stock Option. Each Company Stock Option with an exercise price per share equal to or greater than the Offer Price was cancelled at the Effective Time without any cash payment in respect thereof.

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