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Form 4 Assertio Holdings, Inc. For: Jun 16 Filed by: MCKEE WILLIAM

June 16, 2026 6:38 PM
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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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 *
MCKEE WILLIAM

(Last) (First) (Middle)
ASSERTIO HOLDINGS, INC.
100 SOUTH SAUNDERS ROAD, SUITE 300

(Street)
LAKE FOREST IL 60045

(City) (State) (Zip)
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
Officer (give title below) Other (specify below)
3. Date of Earliest Transaction (Month/Day/Year)
06/16/2026
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 06/16/2026 U 27,936 (1) (2) (3) D $ 0 0 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
Stock Option (Right to Buy) $ 15.15 06/16/2026 D 5,415 (4) (4) Common Stock 5,415 (4) 0 D
Stock Option (Right to Buy) $ 9.2565 06/16/2026 D 5,415 (4) (4) Common Stock 5,415 (4) 0 D
Explanation of Responses:
1. 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 2]
2. [continues from Footnote 1] to receive the Offer Price, less any applicable withholding taxes.
3. 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.
4. 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.
/s/ Sam Schlessinger, Attorney-in-fact for William T. McKee 06/16/2026
** 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.
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