Insider Transactions Reported by 15 Insiders of Assertio Holdings, Inc.

Symbol: ASRT on Nasdaq
Location: Lake Forest, IL

Key facts

ASRT - Assertio Holdings, Inc. has 15 insiders with reported activity on this page.
Net insider value flow over the last year: -$6,806.
Recent transaction rows are available for direct filing-level review.

Change

Buy value: ; sell value: $6,806.
Net share flow: -8,959.

Research use

This page gives a plain-language issuer insider context before you inspect transaction-level evidence.
Use the filing links below to verify timestamps, codes, and ownership impacts directly from SEC forms.

Evidence

Filed on Form 4

Issuer insider activity is sourced from SEC Forms 3, 4, and 5.

See Original Filing

Insider trading overview

Last 12 months

Net insider flow leans to selling over the last 12 months. Net value: -$6,806.

Buys

Shares: 0

Insiders: 0

Sells

$6,806

Shares: 8,959

Insiders: 1

Net

-$6,806

Shares: -8,959

Insiders: -1

Window (months)	Sell shares	Buy $	Sell $	Net $
0-3	0	$0	$0	$0
3-6	0	$0	$0	$0
6-9	8,959	$0	$6,806	-$6,806
9-12	0	$0	$0	$0

Assertio Holdings, Inc. executives and other stock owners filed with the SEC include:

Name	Relationship	Holdings Value	Past Year Net Change	Change %	Valuation	Report Date
Daniel A. Peisert	President & CEO, Director	$965,101			Filing P/S	11 Sep 2023
William T. McKee	Director	$532,460			Median	05 May 2026
Heather L. Mason	Director	$526,245			Median	13 May 2026
Brendan P. O'Grady	CEO, Director	$485,665			Mixed	31 May 2025
Sravan K. Emany	Director	$454,676			Median	05 May 2026
Peter D. Staple	Director	$356,987			Mixed	23 May 2024
Sigurd C. Kirk	Director	$229,044			Median	05 May 2026
David M. Stark	Director	$217,665	-$6,806	-3%	Median	05 May 2026
James L. Tyree	Director	$210,502			Filing P/S	14 Mar 2024
Ajay Patel	EVP and CFO	$202,473			Mixed	02 Mar 2026
Sam Schlessinger	EVP, General Counsel	$188,389			Mixed	02 Mar 2026
Paul Schwichtenberg	President and COO	$179,498			Mixed	02 Mar 2026
Jeff L. Vacirca	Director	$167,786			Filing P/S	11 Jun 2024
Mary E. Pietryga	Svp, Cco				Mixed	05 Feb 2025
Mark L. Reisenauer	CEO, Director				Mixed	02 Mar 2026

Top shareholders of Assertio Holdings, Inc. (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.

Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

Holder	Source	Role / Reporting	Ownership %	Shares	Holdings Value	12M Net Δ	As of	Details
Nantahala Capital Management, LLC	13F 13D/G	Company	11% from 13D/G	692,335	$13,195,905	—	31 Mar 2026	13F 13D/G
VANGUARD CAPITAL MANAGEMENT LLC	13F	Company	— class O/S missing	268,952	$5,126,225	—	31 Mar 2026	13F
Opaleye Management Inc.	13F	Company	— class O/S missing	265,707	$5,064,375	—	31 Mar 2026	13F
RENAISSANCE TECHNOLOGIES LLC	13F	Company	— class O/S missing	228,599	$4,357,097	—	31 Mar 2026	13F
EDGEWOOD MANAGEMENT LLC	13F	Company	— class O/S missing	107,517	$2,049,274	—	31 Mar 2026	13F
BlackRock, Inc.	13F	Company	— class O/S missing	90,035	$1,716,067	—	31 Mar 2026	13F
JANE STREET GROUP, LLC	13F	Company	— class O/S missing	79,436	$1,514,050	—	31 Mar 2026	13F
GEODE CAPITAL MANAGEMENT, LLC	13F	Company	— class O/S missing	76,314	$1,455,028	—	31 Mar 2026	13F
Walleye Capital LLC	13F	Company	— class O/S missing	65,926	$1,256,550	—	31 Mar 2026	13F
SEI INVESTMENTS CO	13F	Company	— class O/S missing	54,940	$1,047,156	—	31 Mar 2026	13F
Huntleigh Advisors, Inc.	13F	Company	— class O/S missing	52,603	$1,002,614	—	31 Mar 2026	13F
CITADEL ADVISORS LLC	13F	Company	— class O/S missing	51,286	$977,512	—	31 Mar 2026	13F
Daniel A. Peisert	3/4/5	President & CEO, Director	— class O/S missing	324,939	$965,101	—	11 Sep 2023	3/4/5
Informed Momentum Co LLC	13F	Company	— class O/S missing	45,145	$860,464	—	31 Mar 2026	13F
MARSHALL WACE, LLP	13F	Company	— class O/S missing	40,772	$777,115	—	31 Mar 2026	13F
CM Management, LLC	13F	Company	— class O/S missing	35,000	$667,100	—	31 Mar 2026	13F
VANGUARD FIDUCIARY TRUST CO	13F	Company	— class O/S missing	34,388	$655,435	—	31 Mar 2026	13F
TWO SIGMA INVESTMENTS, LP	13F	Company	— class O/S missing	33,577	$639,978	—	31 Mar 2026	13F
William T. McKee	3/4/5	Director	— mixed-class rows	109,161 mixed-class rows	$532,460	—	05 May 2026	3/4/5
STATE STREET CORP	13F	Company	— class O/S missing	27,772	$529,334	—	31 Mar 2026	13F
Heather L. Mason	3/4/5	Director	— mixed-class rows	108,835 mixed-class rows	$526,245	—	13 May 2026	3/4/5
CORSAIR CAPITAL MANAGEMENT, L.P.	13F	Company	— class O/S missing	25,549	$486,964	—	31 Mar 2026	13F
Brendan P. O'Grady	3/4/5	CEO, Director	— mixed-class rows	1,217,815 mixed-class rows	$485,665	—	31 May 2025	3/4/5
BANK OF AMERICA CORP /DE/	13F	Company	— class O/S missing	25,033	$477,129	—	31 Mar 2026	13F
Sravan K. Emany	3/4/5	Director	— mixed-class rows	105,080 mixed-class rows	$454,676	—	05 May 2026	3/4/5
MORGAN STANLEY	13F	Company	— class O/S missing	21,030	$400,832	—	31 Mar 2026	13F
Peter D. Staple	3/4/5	Director	— mixed-class rows	453,086 mixed-class rows	$356,987	—	23 May 2024	3/4/5
Quadrature Capital Ltd	13F	Company	— class O/S missing	18,687	$356,174	—	31 Mar 2026	13F
Squarepoint Ops LLC	13F	Company	— class O/S missing	17,892	$341,022	—	31 Mar 2026	13F
MILLENNIUM MANAGEMENT LLC	13F	Company	— class O/S missing	16,425	$313,060	—	31 Mar 2026	13F
BRIDGEWAY CAPITAL MANAGEMENT, LLC	13F	Company	— class O/S missing	16,014	$305,227	—	31 Mar 2026	13F
Empowered Funds, LLC	13F	Company	— class O/S missing	16,014	$305,227	—	31 Mar 2026	13F
Verdad Advisers, LP	13F	Company	— class O/S missing	15,541	$296,211	—	31 Mar 2026	13F
NORTHERN TRUST CORP	13F	Company	— class O/S missing	14,570	$277,704	—	31 Mar 2026	13F
DIMENSIONAL FUND ADVISORS LP	13F	Company	— class O/S missing	14,135	$269,373	—	31 Mar 2026	13F
Sigurd C. Kirk	3/4/5	Director	— mixed-class rows	93,242 mixed-class rows	$229,044	—	05 May 2026	3/4/5
David M. Stark	3/4/5	Director	— mixed-class rows	92,645 mixed-class rows	$217,665	-$6,806	05 May 2026	3/4/5
James L. Tyree	3/4/5	Director	— mixed-class rows	192,072 mixed-class rows	$210,502	—	14 Mar 2024	3/4/5
Ajay Patel	3/4/5	EVP and CFO	— mixed-class rows	55,874 mixed-class rows	$202,473	—	02 Mar 2026	3/4/5
Sam Schlessinger	3/4/5	EVP, General Counsel	— mixed-class rows	54,670 mixed-class rows	$188,389	—	02 Mar 2026	3/4/5
Paul Schwichtenberg	3/4/5	President and COO	— mixed-class rows	66,695 mixed-class rows	$179,498	—	02 Mar 2026	3/4/5
Jeff L. Vacirca	3/4/5	Director	— mixed-class rows	232,384 mixed-class rows	$167,786	—	11 Jun 2024	3/4/5
UBS Group AG	13F	Company	— class O/S missing	6,331	$120,669	—	31 Mar 2026	13F
THURSTON, SPRINGER, MILLER, HERD & TITAK, INC.	13F	Company	— class O/S missing	4,499	$85,749	—	31 Mar 2026	13F
ACADIAN ASSET MANAGEMENT LLC	13F	Company	— class O/S missing	3,899	$73,000	—	31 Mar 2026	13F
Vanguard Global Advisers, LLC	13F	Company	— class O/S missing	2,065	$39,359	—	31 Mar 2026	13F
ROYAL BANK OF CANADA	13F	Company	— class O/S missing	780	$15,000	—	31 Mar 2026	13F
OSAIC HOLDINGS, INC.	13F	Company	— class O/S missing	376	$7,165	—	31 Mar 2026	13F
CITIGROUP INC	13F	Company	— class O/S missing	325	$6,195	—	31 Mar 2026	13F
MCF Advisors LLC	13F	Company	— class O/S missing	100	$1,906	—	31 Mar 2026	13F

Recent Insider Transactions by Companies or Individuals for Assertio Holdings, Inc.

Showing up to 300 most recent insider transactions from the last 12 months.

Insider	Symbol	Class	Transaction	%	Value $	* Price $	Shares	Shares Owned	Date	Ownership
Heather L. Mason	ASRT	Common Stock	Gift				6,666	6,666	13 May 2026	By Trust
Heather L. Mason	ASRT	Common Stock	Gift	-24.1%			-6,666	20,944	13 May 2026	Direct
David M. Stark	ASRT	Common Stock	Award	73.8%			4,851	11,420	05 May 2026	Direct
Sravan K. Emany	ASRT	Common Stock	Award	25.5%			4,851	23,855	05 May 2026	Direct
Sigurd C. Kirk	ASRT	Common Stock	Award	67.7%			4,851	12,017	05 May 2026	Direct
William T. McKee	ASRT	Common Stock	Award	21%			4,851	27,936	05 May 2026	Direct
Heather L. Mason	ASRT	Common Stock	Award	21.3%			4,851	27,610	05 May 2026	Direct
Sam Schlessinger	ASRT	Stock Option (right to buy)	Award				21,128	21,128	02 Mar 2026	Direct
Sam Schlessinger	ASRT	Restricted Stock Units	Award				18,804	18,804	02 Mar 2026	Direct
Ajay Patel	ASRT	Stock Option (right to buy)	Award				21,128	21,128	02 Mar 2026	Direct
Ajay Patel	ASRT	Restricted Stock Units	Award				18,804	18,804	02 Mar 2026	Direct
Paul Schwichtenberg	ASRT	Stock Option (right to buy)	Award				27,888	27,888	02 Mar 2026	Direct
Paul Schwichtenberg	ASRT	Restricted Stock Units	Award				24,820	24,820	02 Mar 2026	Direct
Mark L. Reisenauer	ASRT	Stock Option (right to buy)	Award				26,667	26,667	02 Mar 2026	Direct
Sam Schlessinger	ASRT	Common Stock	Tax liability	-3.34%			-510	14,738	21 Feb 2026	Direct
Sam Schlessinger	ASRT	Common Stock	Options Exercise	8.1%			1,143	15,248	21 Feb 2026	Direct
Sam Schlessinger	ASRT	Restricted Stock Units	Options Exercise	-100%			-1,143	0	21 Feb 2026	Direct
Ajay Patel	ASRT	Common Stock	Tax liability	-3.43%			-566	15,942	21 Feb 2026	Direct
Ajay Patel	ASRT	Common Stock	Options Exercise	7.44%			1,143	16,508	21 Feb 2026	Direct
Ajay Patel	ASRT	Restricted Stock Units	Options Exercise	-100%			-1,143	0	21 Feb 2026	Direct
Paul Schwichtenberg	ASRT	Common Stock	Tax liability	-3.89%			-566	13,987	21 Feb 2026	Direct
Paul Schwichtenberg	ASRT	Common Stock	Options Exercise	8.52%			1,143	14,553	21 Feb 2026	Direct
Paul Schwichtenberg	ASRT	Restricted Stock Units	Options Exercise	-100%			-1,143	0	21 Feb 2026	Direct
Sam Schlessinger	ASRT	Common Stock	Tax liability	-8.07%			-1,239	14,105	18 Feb 2026	Direct
Sam Schlessinger	ASRT	Common Stock	Options Exercise	22.1%			2,778	15,344	18 Feb 2026	Direct
Sam Schlessinger	ASRT	Restricted Stock Units	Options Exercise	-33.3%			-2,778	5,555	18 Feb 2026	Direct
Paul Schwichtenberg	ASRT	Common Stock	Tax liability	-9.31%			-1,377	13,410	18 Feb 2026	Direct
Paul Schwichtenberg	ASRT	Common Stock	Options Exercise	23.1%			2,778	14,787	18 Feb 2026	Direct
Paul Schwichtenberg	ASRT	Restricted Stock Units	Options Exercise	-33.3%			-2,778	5,555	18 Feb 2026	Direct
Ajay Patel	ASRT	Common Stock	Tax liability	-8.22%			-1,377	15,365	18 Feb 2026	Direct
Ajay Patel	ASRT	Common Stock	Options Exercise	19.9%			2,778	16,742	18 Feb 2026	Direct
Ajay Patel	ASRT	Restricted Stock Units	Options Exercise	-33.3%			-2,778	5,555	18 Feb 2026	Direct
Sam Schlessinger	ASRT	Common Stock	Tax liability	-4.69%			-619	12,566	07 Feb 2026	Direct
Sam Schlessinger	ASRT	Common Stock	Options Exercise	11.8%			1,389	13,185	07 Feb 2026	Direct
Sam Schlessinger	ASRT	Restricted Stock Units	Options Exercise	-50%			-1,389	1,389	07 Feb 2026	Direct
Paul Schwichtenberg	ASRT	Common Stock	Tax liability	-6.43%			-825	12,009	07 Feb 2026	Direct
Paul Schwichtenberg	ASRT	Common Stock	Options Exercise	14.9%			1,666	12,834	07 Feb 2026	Direct
Paul Schwichtenberg	ASRT	Restricted Stock Units	Options Exercise	-50%			-1,666	1,667	07 Feb 2026	Direct
Ajay Patel	ASRT	Common Stock	Tax liability	-5.58%			-825	13,964	07 Feb 2026	Direct
Ajay Patel	ASRT	Common Stock	Options Exercise	12.7%			1,666	14,789	07 Feb 2026	Direct
Ajay Patel	ASRT	Restricted Stock Units	Options Exercise	-50%			-1,666	1,667	07 Feb 2026	Direct
Mark L. Reisenauer	ASRT	Stock Option (Right to Buy)	Award				1,000,000	1,000,000	13 Nov 2025	Direct
Mark L. Reisenauer	ASRT	Restricted Stock Units	Award				500,000	500,000	13 Nov 2025	Direct
David M. Stark	ASRT	Common Stock	Sale	-8.33%	$6,806	$0.7597	-8,959	98,541	10 Nov 2025	Direct
Brendan P. O'Grady	ASRT	Common Stock	Tax liability	-27.7%			-49,416	128,955	31 May 2025	Direct
Brendan P. O'Grady	ASRT	Common Stock	Options Exercise	1423.7%			166,665	178,371	31 May 2025	Direct
Brendan P. O'Grady	ASRT	Restricted Stock Units	Options Exercise	-33.3%			-166,665	333,335	31 May 2025	Direct

* An asterisk sign (*) next to the price indicates that the price is likely invalid.