ACTGNasdaqPatent Owners & LessorsFiscal year ends December 31
ACACIA RESEARCH CORP
Financials through Q2 FY2026, quarter ended Jun 30, 2026Last filing: 10-Q on Aug 6, 2026
$4.17−0.06 (-1.42%)
Close on Oct 19, 2026
- Market cap
- $409.15M
- P/E (TTM)
- –
- Dividend yield
- –
Ownership
Institutional holdings as of Jun 30, 2026, from 13F filings
Held by institutions
88.2%
86M of 98M shares
Institutional holders
123
17 new, 11 sold out
Net institutional buying
1M
In Q2 2026
Insider trades, 12 months
0 buys · 5 sales
Net sold $457.56K
Shares held by institutions
Holders of more than 5%
Latest Schedule 13D (active) or 13G (passive) filed by each holder
| Holder | Shares | % of class | Filing | As of |
|---|---|---|---|---|
| Starboard Value LP | 61,123,595 | 62.80% | 13D (active) amendment | Nov 12, 2024 |
Top institutional holders
13F holdings as of Jun 30, 2026
| Holder | Shares | % of ACTG | Value | Change | % of portfolio |
|---|---|---|---|---|---|
| Starboard Value LP | 61,123,595 | 62.64% | $284.84M | – | 6.30% |
| State Street Corp | 3,166,717 | 3.25% | $14.76M | +61,676 | 0.00% |
| Dimensional Fund Advisors LP | 2,941,723 | 3.01% | $13.71M | +87,834 | 0.00% |
| BlackRock, Inc. | 2,597,274 | 2.66% | $12.10M | +190,907 | 0.00% |
| Vanguard Capital Management LLC | 1,485,187 | 1.52% | $6.92M | −110,934 | 0.00% |
| Renaissance Technologies LLC | 1,415,088 | 1.45% | $6.59M | +7,504 | 0.01% |
| Goldman Sachs Group Inc | 1,175,163 | 1.20% | $5.48M | +591,061 | 0.00% |
| Krilogy Financial LLC | 1,127,831 | 1.16% | $5.26M | +344 | 0.16% |
| Peapod Lane Capital LLC | 994,770 | 1.02% | $4.64M | −96,566 | 3.13% |
| Geode Capital Management, LLC | 900,809 | 0.92% | $4.20M | +43,090 | 0.00% |
| Pacific Ridge Capital Partners, LLC | 810,962 | 0.83% | $3.78M | −6,280 | 0.69% |
| Formidable Asset Management, LLC | 793,136 | 0.81% | $3.74M | −45,733 | 0.59% |
| American Century Companies Inc | 693,309 | 0.71% | $3.23M | +181,935 | 0.00% |
| Bridgeway Capital Management, LLC | 629,326 | 0.64% | $2.93M | +25,816 | 0.05% |
| Aegis Financial Corp | 491,086 | 0.50% | $2.29M | – | 0.36% |
| Toroso Investments, LLC | 424,173 | 0.43% | $1.98M | −13,255 | 0.00% |
| Empowered Funds, LLC | 366,026 | 0.38% | $1.71M | +25,816 | 0.01% |
| Northern Trust Corp | 289,835 | 0.30% | $1.35M | +20,188 | 0.00% |
| Vanguard Portfolio Management LLC | 289,396 | 0.30% | $1.35M | +27,487 | 0.00% |
| Susquehanna International Group, Llp | 288,462 | 0.30% | $1.34M | +92,166 | 0.00% |
Institutional buying and selling by quarter
Positions opened, added to, reduced and closed by 13F filers
| Quarter | Holders | Shares held | % of shares | New / added | Reduced / closed | Shares bought | Shares sold |
|---|---|---|---|---|---|---|---|
| Q2 2026 | 123 | 86M | 88.2% | 17 / 48 | 29 / 11 | 2M | 1M |
| Q1 2026 | 118 | 85M | 86.8% | 31 / 38 | 30 / 6 | 5M | 2M |
| Q4 2025 | 94 | 84M | 85.9% | 13 / 27 | 32 / 8 | 1M | 2M |
| Q3 2025 | 89 | 84M | 86.3% | 13 / 28 | 29 / 9 | 2M | 1M |
| Q2 2025 | 85 | 84M | 85.8% | 12 / 31 | 28 / 16 | 3M | 2M |
| Q1 2025 | 89 | 83M | 85.2% | 10 / 24 | 38 / 15 | 2M | 2M |
| Q4 2024 | 95 | 84M | 85.6% | 10 / 30 | 32 / 17 | 2M | 3M |
| Q3 2024 | 103 | 85M | 87.0% | 15 / 32 | 36 / 12 | 6M | 4M |
| Q2 2024 | 103 | 86M | 88.5% | 21 / 32 | 35 / 10 | 2M | 2M |
| Q1 2024 | 92 | 87M | 88.6% | 9 / 25 | 40 / 11 | 1M | 2M |
| Q4 2023 | 95 | 87M | 88.9% | 10 / 33 | 30 / 4 | 3M | 2M |
| Q3 2023 | 89 | 86M | 88.2% | 12 / 28 | 29 / 6 | 44M | 2M |
Top mutual fund and ETF holders
Latest monthly portfolio reports (Form N-PORT)
| Fund | Shares | % of ACTG | Value | % of fund | As of |
|---|---|---|---|---|---|
| Vanguard Total Stock Market Index Fund | 1,067,521 | 1.09% | $4.97M | 0.00% | Jun 30, 2026 |
| iShares Russell 2000 ETF | 897,231 | 0.92% | $4.18M | 0.01% | Jun 30, 2026 |
| Avantis U.S. Small Cap Value ETF | 562,265 | 0.58% | $2.61M | 0.01% | May 31, 2026 |
| Aegis Value Fund | 491,086 | 0.50% | $2.29M | 0.20% | Jun 30, 2026 |
| U.S. Small Cap Value Portfolio | 477,731 | 0.49% | $2.12M | 0.01% | Jul 31, 2026 |
| Formidable ETF | 424,173 | 0.43% | $1.98M | 10.01% | Jun 30, 2026 |
| U.S. Small Cap Portfolio | 407,222 | 0.42% | $1.80M | 0.01% | Jul 31, 2026 |
| Vanguard Extended Market Index Fund | 386,621 | 0.40% | $1.80M | 0.00% | Jun 30, 2026 |
| Fidelity Small Cap Index Fund | 370,233 | 0.38% | $1.64M | 0.00% | Jul 31, 2026 |
| Goldman Sachs Small Cap Value Insights Fund | 368,136 | 0.38% | $1.63M | 0.12% | Jul 31, 2026 |
| EA Bridgeway Omni Small-Cap Value ETF | 366,026 | 0.38% | $1.71M | 0.07% | Jun 30, 2026 |
| iShares Russell 2000 Value ETF | 324,178 | 0.33% | $1.51M | 0.01% | Jun 30, 2026 |
| Dimensional U.S. Small Cap ETF | 321,032 | 0.33% | $1.42M | 0.01% | Jul 31, 2026 |
| Adara Smaller Companies Fund | 319,200 | 0.33% | $1.48M | 0.18% | May 31, 2026 |
| Dimensional U.S. Targeted Value ETF | 301,339 | 0.31% | $1.33M | 0.01% | Jul 31, 2026 |
Officers, directors and major owners
People who filed Forms 3, 4 or 5 in the last two years
| Name | Role | Shares owned | % of shares | Latest filing |
|---|---|---|---|---|
| Martin D. McNulty Jr. | Chief Executive Officer, Director | 418,430 | 0.43% | Jun 9, 2026 |
| Jason W. Soncini | General Counsel | 235,615 | 0.24% | Jun 9, 2026 |
| Robert Rasamny | Chief Administrative Officer | 73,976 | 0.08% | Jun 9, 2026 |
| Michael SIKORYAK Zambito | Chief Financial Officer | 7,700 | 0.01% | Aug 13, 2025 |
| Kirsten Hoover | Interim CFO | 84,677 | 0.09% | Jun 11, 2025 |
| Isaac T. Kohlberg | Director | 54,310 | 0.06% | Sep 16, 2026 |
| Maureen Oconnell | Director | 254,655 | 0.26% | Sep 4, 2026 |
| Michelle Felman | Director | 41,138 | 0.04% | Sep 1, 2026 |
| Gavin Molinelli | Director | 205,966 | 0.21% | Jul 2, 2026 |
| Geoffrey G. Ribar | Director | 85,827 | 0.09% | Jun 3, 2025 |
| Ajay Sundar | – | 107,605 | 0.11% | Jun 25, 2026 |
| Jeffrey C. Smith | 10% owner | – | – | May 16, 2025 |
| Peter A. Feld | 10% owner | 5,000,000 | 5.12% | May 16, 2025 |
| Value & Opportunity C. LP Starboard | 10% owner | – | – | May 16, 2025 |
| Value R. LP Starboard | 10% owner | 20,000,000 | 20.49% | May 16, 2025 |
| Value R. GP LLC Starboard | 10% owner | – | – | May 16, 2025 |
| Value LP Starboard | 10% owner | – | – | May 16, 2025 |
| Principal Co GP LLC Starboard | 10% owner | 49,802,571 | 51.03% | May 16, 2025 |
| Value GP LLC Starboard | 10% owner | – | – | May 16, 2025 |
| Principal Co LP Starboard | 10% owner | 64,378,764 | 65.97% | May 16, 2025 |
| Value & Opportunity Master Fund L. LP Starboard | 10% owner | 64,378,764 | 65.97% | May 16, 2025 |
| Value & Opportunity Master Fund Ltd Starboard | 10% owner | 35,581,606 | 36.46% | May 16, 2025 |
| Value L. LP Starboard | 10% owner | – | – | May 16, 2025 |
| X. Master Fund Ltd Starboard | 10% owner | – | – | May 16, 2025 |
| Value & Opportunity S. Llc Starboard | 10% owner | 5,000,000 | 5.12% | May 16, 2025 |
Insider trades
Common stock transactions reported on Form 4, newest first
| Insider | Date | Transaction | Shares | Price | Value | Shares after |
|---|---|---|---|---|---|---|
| Isaac T. Kohlberg Director | Sep 15, 2026 | Sale | −24,000 | $4.55 | $109.20K | 54,310 |
| Maureen Oconnell Director | Sep 3, 2026 | Sale | −12,466 | $4.57 | $56.97K | 254,655 |
| Maureen Oconnell Director | Sep 2, 2026 | Sale | −20,534 | $4.63 | $95.07K | 267,121 |
| Michelle Felman Director | Aug 28, 2026 | Gift | −16,086 | $4.49 | $72.23K | 41,138 |
| Michelle Felman Director | Aug 28, 2026 | Gift | −16,086 | $4.49 | $72.23K | 25,052 |
| Maureen Oconnell Director | Aug 19, 2026 | Sale | −10,000 | $4.60 | $46.00K | 287,655 |
| Isaac T. Kohlberg Director | Aug 12, 2026 | Sale | −32,188 | $4.67 | $150.32K | 78,310 |
| Gavin Molinelli Director | Jun 30, 2026 | Award | +6,438 | $4.66 | $30.00K | 205,966 |
| Michelle Felman Director | Jun 23, 2026 | Award | +25,052 | – | – | 57,224 |
| Gavin Molinelli Director | Jun 23, 2026 | Award | +25,052 | – | – | 199,528 |
| Ajay Sundar – | Jun 23, 2026 | Award | +4,175 | $4.79 | $20.00K | 107,605 |
| Maureen Oconnell Director | Jun 23, 2026 | Award | +25,052 | – | – | 297,655 |
| Isaac T. Kohlberg Director | Jun 23, 2026 | Award | +25,052 | – | – | 110,498 |
| Robert Rasamny Chief Administrative Officer | Jun 8, 2026 | Tax withholding | −28,390 | $4.62 | $131.16K | 73,976 |
| Jason W. Soncini General Counsel | Jun 8, 2026 | Tax withholding | −48,985 | $4.62 | $226.31K | 235,615 |
| Martin D. McNulty Jr. Chief Executive Officer, Director | Jun 8, 2026 | Tax withholding | −287,133 | $4.62 | $1.33M | 418,430 |
| Robert Rasamny Chief Administrative Officer | Jun 5, 2026 | Award | +60,285 | – | – | 102,366 |
| Jason W. Soncini General Counsel | Jun 5, 2026 | Award | +93,049 | – | – | 284,600 |
| Martin D. McNulty Jr. Chief Executive Officer, Director | Jun 5, 2026 | Award | +539,160 | – | – | 705,563 |
| Gavin Molinelli Director | Mar 31, 2026 | Award | +6,237 | $4.81 | $30.00K | 174,476 |
| Ajay Sundar Director | Mar 31, 2026 | Award | +4,158 | $4.81 | $20.00K | 103,430 |
| Jason W. Soncini General Counsel | Mar 23, 2026 | Tax withholding | −6,147 | $4.85 | $29.81K | 191,551 |
| Martin D. McNulty Jr. Chief Executive Officer, Director | Mar 10, 2026 | Tax withholding | −8,207 | $4.15 | $34.06K | 166,403 |
| Gavin Molinelli Director | Dec 31, 2025 | Award | +8,021 | $3.74 | $30.00K | 168,239 |
| Ajay Sundar Director | Dec 31, 2025 | Award | +5,348 | $3.74 | $20.00K | 99,272 |
| Ajay Sundar Director | Sep 30, 2025 | Award | +6,154 | $3.25 | $20.00K | 93,924 |
| Gavin Molinelli Director | Sep 30, 2025 | Award | +9,231 | $3.25 | $30.00K | 160,218 |
| Michael SIKORYAK Zambito Chief Financial Officer | Aug 11, 2025 | Buy | +7,700 | $3.27 | $25.18K | 7,700 |
| Michelle Felman Director | Aug 11, 2025 | Gift | −11,561 | – | – | 32,172 |
| Michelle Felman Director | Aug 11, 2025 | Gift | −11,560 | – | – | 43,733 |
| Gavin Molinelli Director | Jun 30, 2025 | Award | +8,380 | $3.58 | $30.00K | 150,987 |
| Ajay Sundar Director | Jun 30, 2025 | Award | +5,587 | $3.58 | $20.00K | 87,770 |
| Isaac T. Kohlberg Director | Jun 11, 2025 | Sale | −16,000 | $3.84 | $61.44K | 85,446 |
| Kirsten Hoover Interim CFO | Jun 9, 2025 | Tax withholding | −6,464 | $3.83 | $24.76K | 84,677 |
| Robert Rasamny Chief Administrative Officer | Jun 9, 2025 | Tax withholding | −6,657 | $3.83 | $25.50K | 42,081 |
| Martin D. McNulty Jr. Chief Executive Officer, Director | Jun 9, 2025 | Tax withholding | −10,507 | $3.83 | $40.24K | 174,610 |
| Jason W. Soncini General Counsel | Jun 9, 2025 | Tax withholding | −11,486 | $3.83 | $43.99K | 197,698 |
| Isaac T. Kohlberg Director | May 30, 2025 | Award | +32,172 | – | – | 101,446 |
| Michelle Felman Director | May 30, 2025 | Award | +32,172 | – | – | 55,293 |
| Ajay Sundar Director | May 30, 2025 | Award | +32,172 | – | – | 82,183 |
| Geoffrey G. Ribar Director | May 30, 2025 | Award | +32,172 | – | – | 85,827 |
| Maureen Oconnell Director | May 30, 2025 | Award | +32,172 | – | – | 272,603 |
| Gavin Molinelli Director | May 30, 2025 | Award | +32,172 | – | – | 142,607 |
| Jason W. Soncini General Counsel | May 21, 2025 | Buy | +7,000 | $3.79 | $26.53K | 209,184 |
| Martin D. McNulty Jr. Chief Executive Officer, Director | May 19, 2025 | Buy | +5,300 | $3.77 | $19.98K | 185,117 |
| Value & Opportunity Master Fund L. LP Starboard 10% owner | May 16, 2025 | Other | +3,255,169 | $3.71 | $12.08M | 8,210,058 |
| Value & Opportunity Master Fund L. LP Starboard 10% owner | May 16, 2025 | Other | −290,000 | $3.71 | $1.08M | 3,255,169 |
| Value & Opportunity Master Fund L. LP Starboard 10% owner | May 16, 2025 | Other | −3,255,169 | $3.71 | $12.08M | 0 |
| Value & Opportunity Master Fund L. LP Starboard 10% owner | May 16, 2025 | Other | +290,000 | $3.71 | $1.08M | 4,954,889 |
| Principal Co LP Starboard 10% owner | May 16, 2025 | Other | +3,255,169 | $3.71 | $12.08M | 8,210,058 |
| Principal Co LP Starboard 10% owner | May 16, 2025 | Other | −290,000 | $3.71 | $1.08M | 3,255,169 |
| Principal Co LP Starboard 10% owner | May 16, 2025 | Other | −3,255,169 | $3.71 | $12.08M | 0 |
| Principal Co LP Starboard 10% owner | May 16, 2025 | Other | +290,000 | $3.71 | $1.08M | 4,954,889 |
| Gavin Molinelli Director | May 14, 2025 | Award | +16,086 | $3.73 | $60.00K | 110,435 |
| Ajay Sundar Director | May 14, 2025 | Award | +10,724 | $3.73 | $40.00K | 50,011 |
| Jason W. Soncini General Counsel | Mar 21, 2025 | Tax withholding | −6,147 | $3.42 | $21.02K | 202,184 |
| Kirsten Hoover Interim CFO | Mar 21, 2025 | Tax withholding | −3,486 | $3.42 | $11.92K | 91,141 |
| Jason W. Soncini General Counsel | Mar 10, 2025 | Tax withholding | −6,844 | $4.19 | $28.68K | 208,331 |
| Kirsten Hoover Interim CFO | Mar 10, 2025 | Tax withholding | −4,108 | $4.19 | $17.21K | 94,627 |
| Martin D. McNulty Jr. Chief Executive Officer, Director | Mar 10, 2025 | Tax withholding | −7,804 | $4.19 | $32.70K | 179,817 |
Awards, option exercises, tax withholding and gifts are shown alongside open-market buys and sales. Each name links to the filing on SEC EDGAR.
Planned insider sales
Notices of proposed sale filed on Form 144 before shares are sold
| Seller | Filed | Shares | Market value | Planned sale | Acquired through |
|---|---|---|---|---|---|
| Isaac T. Kohlberg Director | Sep 15, 2026 | 24,000 | $110.00K | Sep 15, 2026 | Grant of restricted stock |
| E. O'Connell Maureen Director | Sep 2, 2026 | 33,000 | $148.50K | Sep 2, 2026 | RSU Vesting |
| E. O'Connell Maureen Director | Aug 19, 2026 | 10,000 | $45.00K | Aug 19, 2026 | RSU Vesting |
| Isaac T. Kohlberg Director | Aug 12, 2026 | 32,188 | $150.20K | Aug 12, 2026 | Grant of restricted stock |
| Ribar Geoffrey Director | Aug 11, 2026 | 85,827 | $395.18K | Aug 11, 2026 | Restricted Stock |
| Isaac T. Kohlberg Director | Jun 13, 2025 | 16,000 | $61.44K | Jun 11, 2025 | Grant of restricted stock |
| Isaac T. Kohlberg Director | Nov 25, 2024 | 15,000 | $68.57K | Nov 25, 2024 | Grant of restricted stock |