Acacia Research ACTG Insider Ownership

NASDAQ ACTG

$4.20 +0.03 (+0.60%)

As of: Oct 20, 2026 · 12:38 PM EDT

Insider Holdings by Owner

19.37Mn Shares

Insider Ownership Statistics

as of 30 Sep, 2026

Insider Ownership

64.23%

▼-0.127% pp QoQ

Shares Held by Insiders

62.68Mn

filed for Sep 2026

▼-0.20% QoQ

Shares Outstanding

97.59Mn

97,586,805 shares

Direct Holdings

1.56Mn

Indirect: 61.12Mn

Net Shares Traded (QoQ)

-124.40K

net selling in Sep 2026

Insiders Holding Shares

with Form 4 holdings on file

Shares Owned by Insiders

Shares held % of outstanding

Latest —

Average ownership —

Peak ownership —

Shares Purchased/Sold by Insiders

Bought Sold

Latest quarter —

Net over range —

Buying quarters —

Insider Ownership Summary

Updated Oct 10, 2026

Over the past 12 months, Acacia Research insiders sold $457,560 of stock on the open market (99.19K shares) and made no open-market purchases.

Behind Acacia Research's open-market sales in the past 12 months were 2 insiders, and no insider bought.
Isaac T. Kohlberg (Director) sold the most Acacia Research stock on the open market over the past 12 months, $259,518 (56.19K shares), most recently on September 15, 2026.
Outside the open market, Acacia Research insiders received 758.88K shares in stock awards, gave up 378.86K shares to cover taxes or exercise prices and gave away 32.17K shares as gifts over the past 12 months.
Business Quant data shows Acacia Research insiders holding 62.68Mn shares in total in their latest Form 4 filings, or 64.23% of the 97.59Mn shares outstanding; that total is down 0.20% from 62.81Mn shares at the end of Q2 2026 and up 0.52% from 62.36Mn shares at the end of Q3 2025.
Of the 62.68Mn shares held by Acacia Research insiders, 1.56Mn shares (2.49%) are held directly and 61.12Mn shares (97.51%) indirectly, through trusts, partnerships, family members and other entities.
ACTG's insider total is spread across 12 insiders who have filed a Form 4 in the past two years.
ACTG's three largest insider shareholders, per their latest Form 4 filings, are Starboard Principal Co LP (10% owner, 61.12Mn shares), Martin D. McNulty Jr. (Chief Executive Officer, 418.43K shares) and Maureen Oconnell (Director, 254.66K shares).
Starboard Principal Co LP holds 97.51% of the combined insider position in Acacia Research.
In the past year, 8 insiders of Acacia Research submitted 21 Form 4 filings reporting trades, awards or other transactions.
Insider figures for ACTG include Form 4 filings through October 1, 2026.

Form 4 Holdings

Insiders Holding ACTG

Insiders 19

Shares held 19.37Mn

Of outstanding 19.85%

#	Insider	Position	Direct	Indirect	Total	Share of Insiders	Last Filed
1	Value Lp Starboard	TenPercentOwner, Other	0	8,210,058	8,210,058	42.4%	16 May, 2025
2	Principal Co Lp Starboard	TenPercentOwner, Other	0	8,210,058	8,210,058	42.4%	16 May, 2025
3	Martin D. Jr. Mcnulty	Chief Executive Officer	418,430	0	418,430	2.2%	09 Jun, 2026
4	Marc W. Booth	Chief Ip Officer	334,907	0	334,907	1.7%	21 Jun, 2023
5	Clifford Press	Chief Executive Officer	268,836	0	268,836	1.4%	08 Sep, 2022
6	Maureen Oconnell	Director	254,655	0	254,655	1.3%	04 Sep, 2026
7	Jason W. Soncini	General Counsel	235,615	0	235,615	1.2%	09 Jun, 2026
8	Lawrence Wesley Golby	Chief Investment Officer	230,035	0	230,035	1.2%	03 Aug, 2022
9	Gavin Molinelli	Director	212,927	0	212,927	1.1%	01 Oct, 2026
10	Katharine Wolanyk	Director	192,310	0	192,310	1.0%	31 May, 2023
11	Jonathan Sagal	Director	189,227	0	189,227	1.0%	31 May, 2023
12	Richard Jay Rosenstein	Chief Financial Officer	176,074	0	176,074	0.9%	07 Jun, 2022
13	Ajay Sundar	Other	107,605	0	107,605	0.6%	25 Jun, 2026
14	Geoffrey G Ribar	Director	85,827	0	85,827	0.4%	03 Jun, 2025
15	Kirsten Hoover	Interim Cfo	84,677	0	84,677	0.4%	11 Jun, 2025
16	Robert Rasamny	Chief Administrative Officer	73,976	0	73,976	0.4%	09 Jun, 2026
17	Isaac T. Kohlberg	Director	54,310	0	54,310	0.3%	16 Sep, 2026
18	Michelle Felman	Director	25,052	0	25,052	0.1%	01 Sep, 2026
19	Michael Sikoryak Zambito	Chief Financial Officer	7,700	0	7,700	0.0%	12 Aug, 2025

Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.

Form 4 Filings

1,842 Insider Transactions

Source SEC Form 4

Latest quarter Sep 2026

Date	Insider	Position	Transaction	Shares	Price	Value	Shares Held After	Ownership
30 Sep, 2026	Gavin Molinelli	Director	Acquired A	6,961	$4.31	$30.00K	212,927	Direct
15 Sep, 2026	Isaac T. Kohlberg	Director	Disposed S	24,000	$4.55	$109.20K	54,310	Direct
02 Sep, 2026	Maureen Oconnell	Director	Disposed S	20,534	$4.63	$95.07K	267,121	Direct
03 Sep, 2026	Maureen Oconnell	Director	Disposed S	12,466	$4.57	$56.97K	254,655	Direct
28 Aug, 2026	Michelle Felman	Director	Disposed G	16,086	$4.49	$72.23K	41,138	Direct
28 Aug, 2026	Michelle Felman	Director	Disposed G	16,086	$4.49	$72.23K	25,052	Direct
19 Aug, 2026	Maureen Oconnell	Director	Disposed S	10,000	$4.60	$46.00K	287,655	Direct
12 Aug, 2026	Isaac T. Kohlberg	Director	Disposed S	32,188	$4.67	$150.32K	78,310	Direct
30 Jun, 2026	Gavin Molinelli	Director	Acquired A	6,438	$4.66	$30.00K	205,966	Direct
23 Jun, 2026	Isaac T. Kohlberg	Director	Acquired A	25,052	$0.00	$0	110,498	Direct
23 Jun, 2026	Ajay Sundar	Other	Acquired A	4,175	$4.79	$20.00K	107,605	Direct
23 Jun, 2026	Gavin Molinelli	Director	Acquired A	25,052	$0.00	$0	199,528	Direct
23 Jun, 2026	Michelle Felman	Director	Acquired A	25,052	$0.00	$0	57,224	Direct
23 Jun, 2026	Maureen Oconnell	Director	Acquired A	25,052	$0.00	$0	297,655	Direct
05 Jun, 2026	Martin D. Jr. Mcnulty	Chief Executive Officer	Acquired A	539,160	$0.00	$0	705,563	Direct
05 Jun, 2026	Robert Rasamny	Chief Administrative Officer	Acquired A	60,285	$0.00	$0	102,366	Direct
05 Jun, 2026	Jason W. Soncini	General Counsel	Acquired A	93,049	$0.00	$0	284,600	Direct
08 Jun, 2026	Jason W. Soncini	General Counsel	Disposed F	48,985	$4.62	$226.31K	235,615	Direct
08 Jun, 2026	Martin D. Jr. Mcnulty	Chief Executive Officer	Disposed F	287,133	$4.62	$1.33Mn	418,430	Direct
08 Jun, 2026	Robert Rasamny	Chief Administrative Officer	Disposed F	28,390	$4.62	$131.16K	73,976	Direct

Showing 1 to 20 of 1,842 transactions