ACTG · NASDAQ · Specialty Business Services

Acacia Research (ACTG)

Acquires and operates IP, energy, industrial printing, and manufacturing businesses under Starboard-backed ownership.

$4.33
vs last close−0.03 (−0.69%)

13F · 13D/G · Form 4

Institutions≈ 88.27%86.14M shares
125 holders · as of Jun 30, 2026 · largest filers plus last quarter's tail
Insiders1.61%1.57M shares
11 holders · as of Sep 16, 2026
Other≈ 10.12%9.88M shares
remainder

97.59M company shares as of Sep 22, 2026 · institutions as of Jun 30, 2026 · holders as of their latest filing

This quarter's institutional total failed a plausibility check; shown: the largest filers plus last quarter's remainder.

13F · 13D/G · Form 4

HolderStakeSharesDate
Starboard Value LPInstitution
62.64%61.12Mas of Jun 30, 2026
State Street CorpInstitution
3.25%3.17Mas of Jun 30, 2026
Dimensional Fund Advisors LPInstitution
3.01%2.94Mas of Jun 30, 2026
BlackRock, Inc.Institution
2.66%2.60Mas of Jun 30, 2026
Ariel Investments, LLCInstitution
2.27%2.21Mfiled Feb 14, 2020
Vanguard Capital Management LLCInstitution
1.52%1.49Mas of Jun 30, 2026
Renaissance Technologies LLCInstitution
1.45%1.42Mas of Jun 30, 2026
Goldman Sachs Group IncInstitution
1.20%1.18Mas of Jun 30, 2026
Krilogy Financial LLCInstitution
1.16%1.13Mas of Jun 30, 2026
Peapod Lane Capital LLCInstitution
1.02%994,770as of Jun 30, 2026
Geode Capital Management, LLCInstitution
0.92%900,809as of Jun 30, 2026
Pacific Ridge Capital Partners, LLCInstitution
0.83%810,962as of Jun 30, 2026
Formidable Asset Management, LLCInstitution
0.81%793,136as of Jun 30, 2026
American Century Companies IncInstitution
0.71%693,309as of Jun 30, 2026
Bridgeway Capital Management, LLCInstitution
0.64%629,326as of Jun 30, 2026
Aegis Financial CorpInstitution
0.50%491,086as of Jun 30, 2026
Toroso Investments, LLCInstitution
0.43%424,173as of Jun 30, 2026
Martin D. Jr. McNultyInsiderdirector, officer: Chief Executive Officer
0.43%418,430filed Jun 9, 2026
Empowered Funds, LLCInstitution
0.38%366,026as of Jun 30, 2026
Northern Trust CorpInstitution
0.30%289,835as of Jun 30, 2026
Vanguard Portfolio Management LLCInstitution
0.30%289,396as of Jun 30, 2026
Susquehanna International Group, LLPInstitution
0.30%288,462as of Jun 30, 2026
Acadian Asset Management LLCInstitution
0.27%263,877as of Jun 30, 2026
Maureen OconnellInsiderdirector
0.26%254,655filed Sep 4, 2026
Citadel Advisors LLCInstitution
0.26%249,524as of Jun 30, 2026

13F, as of Jun 30, 2026

125 holders · 86.14M shares · 18 new positions · 66 increased · 29 reduced · 12 closed

HolderShares% outstandingChg q/qFiled
Starboard Value LP61.12M62.64%0Aug 14, 2026
State Street Corp3.17M3.25%+61.7KAug 7, 2026
Dimensional Fund Advisors LP2.94M3.01%+87.8KAug 11, 2026
BlackRock, Inc.2.60M2.66%+190.9KAug 7, 2026
Vanguard Capital Management LLC1.49M1.52%−110.9KAug 13, 2026
Renaissance Technologies LLC1.42M1.45%+7.5KAug 13, 2026
Goldman Sachs Group Inc1.18M1.20%+591.1KAug 14, 2026
Krilogy Financial LLC1.13M1.16%+344Jul 27, 2026

13D/G · 5% or more, as filed

No 13D/G filer at 5% or more on record.

Form 4

Latest trades

DateInsiderTypeSharesAvg priceOwned after
Sep 15, 2026
Isaac T. Kohlbergdirector
Sale24,000$4.5554,310
Sep 3, 2026
Maureen Oconnelldirector
Sale12,466$4.57254,655
Sep 2, 2026
Maureen Oconnelldirector
Sale20,534$4.63267,121
Aug 19, 2026
Maureen Oconnelldirector
Sale10,000$4.60287,655
Aug 12, 2026
Isaac T. Kohlbergdirector
Sale32,188$4.6778,310

House and Senate disclosures

Not reported.