Acacia Research Corp
ACTG- Exchange
- Nasdaq
- Industry
- Patent Owners & Lessors
- SEC CIK
- 0000934549
In the last 90 days, Acacia Research Corp insiders filed 0 open-market purchases and 4 sales; 122 institutions reported holding it in 13F filings for Q2 2026, worth $401.5M in total; Starboard Value is the only superinvestor holding it.
Open-market trades, last 90 days
Open-market purchases (P) and sales (S) by Acacia Research Corp insiders, counted by Form 4 filing. Trades with a flagged price and duplicate filings are left out.
- Open-market buys
- 0 filings
- Open-market sells
- 4 filings
- 2 insiders, $457.6K in total
- Insiders trading
- 2
- Net value
- −$457.6K
- Purchases minus sales
Insider roster
Directors, officers and 10% owners who have filed a Form 4 for Acacia Research Corp, current and former, most recent filer first. Last reported holding is the position after the last non-derivative trade in their latest filing.
| Name | Title | Last reported holding | Last filing | Filings, past year |
|---|---|---|---|---|
| Kohlberg Isaac T. | Director | 54,310 | Sep 16, 2026 | 3 |
| Oconnell Maureen | Director | 254,655 | Sep 4, 2026 | 3 |
| Felman Michelle | Director | 25,052 | Sep 1, 2026 | 2 |
| Molinelli Gavin | Director | 205,966 | Jul 2, 2026 | 5 |
| Sundar Ajay | Other: See Footnote 1 | 107,605 | Jun 25, 2026 | 4 |
| McNulty Martin D. Jr. | Chief Executive Officer | 418,430 | Jun 9, 2026 | 2 |
| Soncini Jason W. | General Counsel | 235,615 | Jun 9, 2026 | 2 |
| Rasamny Robert | Chief Administrative Officer | 73,976 | Jun 9, 2026 | 1 |
| Zambito Michael SIKORYAK | Chief Financial Officer | 7,700 | Aug 13, 2025 | 0 |
| Hoover Kirsten | Interim CFO | 84,677 | Jun 11, 2025 | 0 |
| Ribar Geoffrey G | Director | 85,827 | Jun 3, 2025 | 0 |
| Smith Jeffrey C | 10% Owner, Other: See Footnote 2 | 8,210,058Indirect | May 16, 2025 | 0 |
| Feld Peter A | 10% Owner, Other: See Footnote 2 | 8,210,058Indirect | May 16, 2025 | 0 |
| Starboard Principal Co LP | 10% Owner, Other: See Footnote 2 | 8,210,058Indirect | May 16, 2025 | 0 |
| Starboard Principal Co GP LLC | 10% Owner, Other: See Footnote 2 | 8,210,058Indirect | May 16, 2025 | 0 |
| Starboard Value & Opportunity Master Fund Ltd | 10% Owner, Other: See Footnote 2 | 8,210,058Indirect | May 16, 2025 | 0 |
| Starboard Value LP | 10% Owner, Other: See Footnote 2 | 8,210,058Indirect | May 16, 2025 | 0 |
| Starboard Value GP LLC | 10% Owner, Other: See Footnote 2 | 8,210,058Indirect | May 16, 2025 | 0 |
| Starboard Value & Opportunity S LLC | 10% Owner, Other: See Footnote 2 | 8,210,058Indirect | May 16, 2025 | 0 |
| Starboard Value & Opportunity C LP | 10% Owner, Other: See Footnote 2 | 8,210,058Indirect | May 16, 2025 | 0 |
| Starboard Value R LP | 10% Owner, Other: See Footnote 2 | 8,210,058Indirect | May 16, 2025 | 0 |
| Starboard Value R GP LLC | 10% Owner, Other: See Footnote 2 | 8,210,058Indirect | May 16, 2025 | 0 |
| Starboard Value & Opportunity Master Fund L LP | 10% Owner, Other: See Footnote 2 | 8,210,058Indirect | May 16, 2025 | 0 |
| Starboard Value L LP | 10% Owner, Other: See Footnote 2 | 8,210,058Indirect | May 16, 2025 | 0 |
| Starboard X Master Fund Ltd | 10% Owner, Other: See Footnote 2 | 8,210,058Indirect | May 16, 2025 | 0 |
| Booth Marc W. | Chief IP Officer | 334,907 | Jun 21, 2023 | 0 |
| Wolanyk Katharine | Director | 192,310 | May 31, 2023 | 0 |
| Sagal Jonathan | Director | 189,227 | May 31, 2023 | 0 |
| Press Clifford | Chief Executive Officer | 268,836 | Sep 8, 2022 | 0 |
| Golby Lawrence Wesley | Chief Investment Officer | 230,035 | Aug 3, 2022 | 0 |
| Rosenstein Richard Jay | Chief Financial Officer | 176,074 | Jun 7, 2022 | 0 |
| Simmons Meredith A. | General Counsel | 80,000 | Nov 9, 2021 | 0 |
Insider trades
Each row adds up one type of transaction in one Form 4 filing. Only open-market purchases (P) and sales (S) are shown by default; use the filters to see grants, option exercises and other codes.
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Sep 16, 2026 (view filing)5:18 PM ET | Sep 15 | 1 day | Kohlberg Isaac T.Director | SSaleACTG Common Stock | −24.0K | $4.55 | −$109.2K | −30.6%54.3K after | |
| Sep 4, 2026 (view filing)4:00 PM ET | Sep 2-3 | 2 days | Oconnell MaureenDirector | SSaleACTG Common Stock | −33.0K | $4.61 | −$152.0K | −11.5%254.7K after | 2 lots |
| Aug 20, 2026 (view filing)7:23 PM ET | Aug 19 | 1 day | Oconnell MaureenDirector | SSaleACTG Common Stock | −10.0K | $4.60 | −$46.0K | −3.4%287.7K after | |
| Aug 14, 2026 (view filing)4:00 PM ET | Aug 12 | 2 days | Kohlberg Isaac T.Director | SSaleACTG Common Stock | −32.2K | $4.67 | −$150.3K | −29.1%78.3K after | |
| Aug 13, 2025 (view filing) | Aug 11 | 2 days | Zambito Michael SIKORYAKChief Financial Officer | PPurchaseACTG Common Stock | +7.70K | $3.27 | +$25.2K | New position7.70K after | |
| Jun 13, 2025 (view filing) | Jun 11 | 2 days | Kohlberg Isaac T.Director | SSaleACTG Common Stock | −16.0K | $3.84 | −$61.4K | −15.8%85.4K after | |
| May 23, 2025 (view filing) | May 21 | 2 days | Soncini Jason W.General Counsel | PPurchaseACTG Common Stock | +7.00K | $3.79 | +$26.5K | +3.5%209.2K after | |
| May 21, 2025 (view filing) | May 19 | 2 days | McNulty Martin D. Jr.Chief Executive Officer | PPurchaseACTG Common Stock | +5.30K | $3.77 | +$20.0K | +2.9%185.1K after | |
| Nov 26, 2024 (view filing) | Nov 25 | 1 day | Kohlberg Isaac T.Director | SSaleACTG Common Stock | −15.0K | $4.57 | −$68.5K | −17.8%69.3K after | |
| May 20, 2024 (view filing) | May 17 | 3 days | Soncini Jason W.General Counsel | PPurchaseACTG Common Stock | +5.00K | $5.36 | +$26.8K | +2.3%226.7K after | |
| May 20, 2024 (view filing) | May 16-17 | 4 days | McNulty Martin D. Jr.Chief Executive Officer | PPurchaseACTG Common Stock | +19.0K | $5.29 | +$100.3K | +10.6%198.1K after | 2 lots |
| May 31, 2023 (view filing) | May 26 | 5 days | Soncini Jason W.General Counsel | PPurchaseACTG Common Stock | +12.5K | $3.96 | +$49.5K | +8.7%156.0K after | |
| May 25, 2023 (view filing) | May 24 | 1 day | McNulty Martin D. Jr.Interim CEO | PPurchaseACTG Common Stock | +40.0K | $3.75 | +$150.0K | +66.7%100.0K after | |
| May 17, 2023 (view filing) | May 15 | 2 days | Hoover KirstenInterim CFO | SSaleACTG Common Stock | −12.5K | $4.00 | −$50.0K | −16.0%65.5K after | |
| Dec 21, 2021 (view filing) | Dec 20 | 1 day | Booth Marc W.Chief IP Officer | SSaleACTG Common Stock | −6.28K | $4.71 | −$29.6K | −2.8%219.7K after | |
| Dec 21, 2021 (view filing) | Dec 17 | 4 days | Rosenstein Richard JayChief Financial Officer | PPurchaseACTG Common tock | +25.0K | $5.10 | +$127.5K | +20.5%146.9K after | |
| Dec 21, 2021 (view filing) | Dec 17 | 4 days | Soncini Jason W.General Counsel | PPurchaseACTG Common Stock | +11.0K | $5.05 | +$55.5K | +16.3%78.5K after | |
| Nov 9, 2021 (view filing) | Nov 8 | 1 day | Booth Marc W.Chief IP Officer | SSaleACTG Common Stock | −4.40K | $5.53 | −$24.3K | −1.9%226.0K after |