Acacia Research Corp
A holding company that buys and runs businesses across technology, energy, industrials, healthcare, and business services, Acacia Research was founded in 1993 by Bruce Stewart and became famous for licensing and enforcing patents. Its name comes from the Greek word akakia, a genus of spiny trees and shrubs. Today it operates as a value-oriented acquirer, with activist investor Starboard Value as its controlling shareholder.
Granted 56.12M
Granted 56.12M
Granted 686.6K · Bought 64.3K
Granted 159.6K · Sold 10.7K
Granted 100.0K
Granted 137.1K
Granted 269.3K · Bought 35.5K
Granted 199.5K
Granted 56.7K
Granted 91.9K
Granted 45.0K · Bought 25.0K
Granted 141.5K · Sold 31.0K
Granted 107.6K
Granted 85.8K
Granted 79.6K · Sold 12.5K
Granted 115.7K
Granted 80.3K
Bought 7.7K
| Insider | Stake change | Holds now | Granted / vested | Bought | Sold |
|---|---|---|---|---|---|
| Feld Peter A +3 co-filers10% owner, See Footnote 2 · 22 transactions | — | 64.38Mas of May 2025 | 56.12M | — | — |
| Starboard Value & Opportunity Master Fund LTD +9 co-filers10% owner, See Footnote 2 · 22 transactions | — | 64.38Mas of May 2025 | 56.12M | — | — |
| McNulty Martin D. Jr.Chief Executive Officer, Director · 13 transactions | — | 418.4K | 686.6K | 64.3K | — |
| Booth Marc W.Chief IP Officer · 11 transactions | +45.4% | 334.9Kas of Jun 2023 | 159.6K | — | 10.7K |
| Golby Lawrence WesleyChief Investment Officer · 3 transactions | — | 316.7Kas of Aug 2022 | 100.0K | — | — |
| Oconnell MaureenDirector · 5 transactions | +85.4% | 297.7K | 137.1K | — | — |
| Press CliffordChief Executive Officer, Director · 1 transaction | -49.5% | 268.8Kas of Sep 2022 | — | — | — |
| Soncini Jason W.General Counsel · 22 transactions | +249.1% | 235.6K | 269.3K | 35.5K | — |
| Molinelli GavinDirector · 12 transactions | — | 199.5K | 199.5K | — | — |
| Wolanyk KatharineDirector · 2 transactions | +41.8% | 192.3Kas of May 2023 | 56.7K | — | — |
| Sagal JonathanDirector · 4 transactions | +94.4% | 189.2Kas of May 2023 | 91.9K | — | — |
| Rosenstein Richard JayChief Financial Officer · 4 transactions | +44.4% | 176.1Kas of Jun 2022 | 45.0K | 25.0K | — |
| Kohlberg Isaac T.Director · 8 transactions | — | 110.5K | 141.5K | — | 31.0K |
| Sundar AjaySee Footnote 1 · 11 transactions | — | 107.6K | 107.6K | — | — |
| Ribar Geoffrey GDirector · 3 transactions | — | 85.8Kas of May 2025 | 85.8K | — | — |
| Hoover KirstenInterim CFO · 13 transactions | — | 84.7Kas of Jun 2025 | 79.6K | — | 12.5K |
| Rasamny RobertChief Administrative Officer · 5 transactions | — | 74.0K | 115.7K | — | — |
| Felman MichelleDirector · 5 transactions | — | 57.2K | 80.3K | — | — |
| Zambito Michael SIKORYAKChief Financial Officer · 1 transaction | — | 7.7Kas of Aug 2025 | — | 7.7K | — |
Select a row to see that insider’s individual transactions. Sum of the holdings confirmed in the 12 months before this insider's last filing. A Form 4 reports a holding per line — held directly, or through a named trust, partnership or foundation, and in each share class separately — never a person’s total. Lines not restated in that time are left out and shown apart: an active filer restates what they still hold, so a line they did not restate is more often an entity since renamed, whose shares a successor line reports too. An amber marker means some were left out.
Net open-market activity over the last 5 years: +78.3K shares. Grants, option exercises and tax withholding are excluded — they are compensation mechanics, not decisions to buy or sell.