Mark L. Reisenauer - 16 Jun 2026 Form 4 Insider Report for Assertio Holdings, Inc. (ASRT)

Reporting relationship: CEO, Director
Issuer ticker: ASRT
Reported as of: 16 Jun 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 16 Jun 2026, 18:28:44 UTC
Prior SEC filing: 03 Mar 2026
Source filing: View source filing
Reporting owner signature: /s/ Sam Schlessinger, Attorney-in-fact for Mark L. Reisenauer

Key filing fact

Mark L. Reisenauer filed Form 4 for Assertio Holdings, Inc. (ASRT) on 16 Jun 2026.

Key facts

This page summarizes Mark L. Reisenauer's Form 4 filing for Assertio Holdings, Inc. (ASRT).
5 reported transactions and 4 derivative rows are listed below.
Accepted by SEC: 16 Jun 2026, 18:28.

Change

Previous filing in this sequence was filed on 03 Mar 2026.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001413481 Primary reporting owner

Reisenauer Mark L

Relationship: CEO, Director
Address: ASSERTIO HOLDINGS, INC., 100 SOUTH SAUNDERS ROAD, SUITE 300, LAKE FOREST
Signature: /s/ Sam Schlessinger, Attorney-in-fact for Mark L. Reisenauer
Signature date: 16 Jun 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

ASRT transaction

Common Stock

Disposition pursuant to a tender of shares in a change of control transaction

Transaction value
Shares: -3,583
Change %: -100%
Price: $0.000000^*
Shares after: 0
Date: 16 Jun 2026
Ownership: Direct
Footnotes: F1, F2, F3, F4

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

ASRT transaction Derivative

Restricted Stock Units

Disposed to Issuer

Transaction value
Shares: -33,333
Change %: -100%
Price: $0.000000^*
Shares after: 0
Date: 16 Jun 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 33,333
Exercise price: $0.000000
Footnotes: F4

ASRT transaction Derivative

Stock Option (Right to Buy)

Disposed to Issuer

Transaction value
Shares: -5,415
Change %: -100%
Price
Shares after: 0
Date: 16 Jun 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 5,415
Exercise price: $12.75
Footnotes: F1, F5

ASRT transaction Derivative

Stock Option (Right to Buy)

Disposed to Issuer

Transaction value
Shares: -66,666
Change %: -100%
Price
Shares after: 0
Date: 16 Jun 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 66,666
Exercise price: $12.37
Footnotes: F5

ASRT transaction Derivative

Stock Option (Right to Buy)

Disposed to Issuer

Transaction value
Shares: -26,667
Change %: -100%
Price
Shares after: 0
Date: 16 Jun 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 26,667
Exercise price: $11.77
Footnotes: F5

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Section 16 status

Mark L. Reisenauer is no longer subject to Section 16 filing requirements. Form 4 or Form 5 obligations may still apply in specific circumstances.

Explanation of responses 5 footnotes

Footnote F1

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.

Footnote F2

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]

Footnote F3

[continues from Footnote 2] to receive the Offer Price, less any applicable withholding taxes.

Footnote F4

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.

Footnote F5

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.