Starboard Value LP Net Worth - Insider Trades and Bio as of Jun 14, 2026

ACTGACACIA RESEARCH CORPSEC CIK: 0001517137

Estimated Net Worth

Last Updated: May 19, 2026 01:35 AM EST

Transaction Summary

Total Transactions48

Buy-Sell Ratio1.14

Buy Transactions16

Sell Transactions14

Transaction Volume

Total Volume$229.49M

Net Volume$451.28M

Buy Volume$340.38M

Sell Volume-$110.90M

Trade Analysis

AVG Trade Size$10.54M

Largest Trade$258.04M

Most Active MonthAug

Most Active Year2012

Trading Sentiment

OverallBullish

Recent TradeNeutral

Last 90 Days0 Trades

ConvictionNone

Net Worth & Trading Activity Over Time

Monthly Trading Pattern

Past Insider Trading and Trends

Starboard Value LP does not have any significant net worth to report based on the numbers we have. This is based on reported shares across multiple companies, which include WAUSAU PAPER CORP., Mellanox Technologies, Ltd., EXTREME NETWORKS INC, INSPERITY, INC., OFFICE DEPOT INC, Cyxtera Technologies, Inc., QUANTUM CORP /DE/, ACACIA RESEARCH CORP, SURMODICS INC, DSP GROUP INC /DE/, INTEGRATED SILICON SOLUTION INC, GREEN DOT CORP, and MICREL INC.

Holdings & Transactions

ACTGacacia research corp

Updated: May 16, 2025VIEW QUOTE

Form Type	Δ Own, %	Traded Shares	Price	Size, $	Filing Date	Own, %	Type	Scheduled	Trade Dates	SEC Filing
From 4	—	—	$3.71	—	May 16, 2025	61.12M	Acq/Dis	—	May 16	View
From 4	0.18	9.27M	$3.65	$148.82M	Jul 17, 2023	61.12M	Options	—	Jul 13	View
From 4	-0.57	68.49M	$5.25	$78.75M	Mar 03, 2023	51.86M	Options	—	Mar 01 - 03	View
From 3	—	—	—	—	Nov 08, 2022	5.00M	—	—	—	View

GDOTgreen dot corp

Updated: Mar 08, 2024VIEW QUOTE

Form Type	Δ Own, %	Traded Shares	Price	Size, $	Filing Date	Own, %	Type	Scheduled	Trade Dates	SEC Filing
From 4	-0.05	275.73K	$8.33	-$2.30M	Mar 08, 2024	6.84M	Sale	—	Mar 06 - 08	View
From 3	—	—	—	—	Nov 18, 2022	5.29M	—	—	—	View

CYXTQcyxtera technologies, inc.

Updated: Jun 08, 2023VIEW QUOTE

Form Type	Δ Own, %	Traded Shares	Price	Size, $	Filing Date	Own, %	Type	Scheduled	Trade Dates	SEC Filing
From 4	-0.32	9.00M	$0.06	-$571.50K	Jun 08, 2023	19.36M	Sale	—	Jun 06	View
From 4	—	—	$10.00	$37.50M	Jan 25, 2022	20.77M	Options	—	Jan 21	View
From 4	-0.07	1.36M	—	—	Jan 19, 2022	20.77M	Options	—	Jan 14	View
From 3	—	—	—	—	Aug 03, 2021	16.53M	—	—	—	View

mellanox technologies, ltd.

Updated: Jul 11, 2018

Form Type	Δ Own, %	Traded Shares	Price	Size, $	Filing Date	Own, %	Type	Scheduled	Trade Dates	SEC Filing
From 4	-0.06	344.68K	$85.03	-$29.31M	Jul 11, 2018	5.12M	Sale	—	Jul 09	View
From 4	0.14	460.00K	$25.00	$11.50M	Mar 02, 2018	5.47M	Options	—	Feb 28	View
From 3	—	—	—	—	Jan 02, 2018	5.01M	—	—	—	View

QMCOquantum corp /de/

Updated: Dec 07, 2016VIEW QUOTE

Form Type	Δ Own, %	Traded Shares	Price	Size, $	Filing Date	Own, %	Type	Scheduled	Trade Dates	SEC Filing
From 4	-0.51	7.85M	$0.91	-$7.15M	Dec 07, 2016	7.52M	Sale	—	Dec 06	View
From 4	-0.19	3.60M	$0.92	-$3.31M	Dec 05, 2016	15.37M	Sale	—	Dec 01 - 05	View
From 4	-0.08	1.73M	$0.62	-$1.06M	Mar 18, 2016	18.97M	Sale	—	Mar 16 - 18	View
From 4	-0.19	5.00M	$0.71	-$3.55M	Jan 26, 2016	20.70M	Sale	—	Jan 22 - 25	View
From 4	—	3.04M	$85.00	$258.04M	Oct 13, 2015	418.24K	Purchase	—	Oct 09	View
From 4	0.10	250.00K	$1.23	$308.05K	Apr 08, 2013	2.68M	Purchase	—	Apr 04	View
From 4	1.43	1.43M	$1.24	$1.77M	Apr 03, 2013	2.43M	Purchase	—	Apr 01 - 03	View
From 4	—	1.33M	$52.05	$35.57M	Mar 15, 2013	1.00M	Purchase	—	Mar 13 - 15	View
From 3	—	—	—	—	Nov 01, 2012	23.02M	—	—	—	View

NSPinsperity, inc.

Updated: Jan 20, 2015VIEW QUOTE

Form Type	Δ Own, %	Traded Shares	Price	Size, $	Filing Date	Own, %	Type	Scheduled	Trade Dates	SEC Filing
From 3	—	—	—	—	Jan 20, 2015	3.34M	—	—	—	View

integrated silicon solution inc

Updated: Jun 29, 2015

Form Type	Δ Own, %	Traded Shares	Price	Size, $	Filing Date	Own, %	Type	Scheduled	Trade Dates	SEC Filing
From 4	-0.41	1.46M	$22.23	-$32.52M	Jun 29, 2015	2.11M	Sale	—	Jun 25	View
From 3	—	—	—	—	May 04, 2015	3.57M	—	—	—	View

micrel inc

Updated: Jun 08, 2015

Form Type	Δ Own, %	Traded Shares	Price	Size, $	Filing Date	Own, %	Type	Scheduled	Trade Dates	SEC Filing
From 4	-0.26	1.75M	$13.90	-$24.26M	Jun 08, 2015	5.04M	Sale	—	Jun 04	View
From 3	—	—	—	—	Aug 11, 2014	6.78M	—	—	—	View

wausau paper corp.

Updated: May 06, 2013

Form Type	Δ Own, %	Traded Shares	Price	Size, $	Filing Date	Own, %	Type	Scheduled	Trade Dates	SEC Filing
From 4	—	200.00K	$9.83	$1.97M	May 06, 2013	200.00K	Purchase	—	May 02 - 06	View
From 4	0.01	75.00K	$8.22	$616.32K	Nov 09, 2012	7.30M	Purchase	—	Nov 07 - 09	View
From 4	0.01	75.00K	$8.31	$622.91K	Nov 02, 2012	7.23M	Purchase	—	Oct 31 - 01	View
From 4	0.01	50.00K	$8.53	$426.65K	Oct 26, 2012	7.15M	Purchase	—	Oct 24 - 26	View
From 4	0.04	250.00K	$8.65	$2.16M	Oct 15, 2012	5.97M	Purchase	—	Oct 11 - 12	View
From 4	0.04	250.00K	$8.69	$2.18M	Oct 05, 2012	6.85M	Purchase	—	Oct 03 - 05	View
From 4	0.16	742.33K	$9.52	$7.06M	Sep 25, 2012	5.48M	Purchase	—	Sep 21 - 25	View
From 4	0.02	82.67K	$8.80	$727.36K	Sep 14, 2012	4.74M	Purchase	—	Sep 04 - 05	View
From 4	0.02	82.67K	$8.80	$727.36K	Sep 06, 2012	4.74M	Purchase	—	Sep 04 - 05	View
From 4	0.06	350.00K	$8.48	$2.98M	Aug 20, 2012	5.78M	Purchase	—	Aug 16 - 17	View
From 3	—	—	—	—	Aug 20, 2012	5.43M	—	—	—	View

EXTRextreme networks inc

Updated: Mar 18, 2013VIEW QUOTE

Form Type	Δ Own, %	Traded Shares	Price	Size, $	Filing Date	Own, %	Type	Scheduled	Trade Dates	SEC Filing
From 4	-0.01	120.30K	$3.56	-$428.77K	Mar 18, 2013	9.28M	Sale	—	Mar 15	View
From 3	—	—	—	—	Feb 11, 2013	9.40M	—	—	—	View

dsp group inc /de/

Updated: Jul 26, 2013

Form Type	Δ Own, %	Traded Shares	Price	Size, $	Filing Date	Own, %	Type	Scheduled	Trade Dates	SEC Filing
From 4/A	-0.01	27.08K	$8.24	-$223.15K	Jul 26, 2013	2.20M	Sale	—	Jul 22 - 23	View
From 4	-0.01	27.08K	$8.24	-$223.15K	Jul 24, 2013	2.20M	Sale	—	Jul 22 - 23	View
From 3	—	—	—	—	Apr 23, 2012	2.22M	—	—	—	View

ODPoffice depot inc

Updated: Oct 11, 2012VIEW QUOTE

Form Type	Δ Own, %	Traded Shares	Price	Size, $	Filing Date	Own, %	Type	Scheduled	Trade Dates	SEC Filing
From 4	0.11	4.09M	$2.29	$9.37M	Oct 11, 2012	42.10M	Purchase	—	Oct 09 - 11	View
From 4	0.22	6.92M	$2.29	$15.84M	Sep 17, 2012	38.01M	Purchase	—	Sep 12 - 14	View
From 3	—	—	—	—	Sep 14, 2012	31.09M	—	—	—	View

SRDXsurmodics inc

Updated: Aug 15, 2012VIEW QUOTE

Form Type	Δ Own, %	Traded Shares	Price	Size, $	Filing Date	Own, %	Type	Scheduled	Trade Dates	SEC Filing
From 4	-0.04	80.20K	$17.62	-$1.41M	Aug 15, 2012	1.75M	Sale	—	Aug 13 - 14	View
From 4	-0.12	257.56K	$17.74	-$4.57M	Aug 10, 2012	1.83M	Sale	—	Aug 08 - 10	View

Benzinga

Benzinga

Net Worth & Trading Activity Over Time

Monthly Trading Pattern

Past Insider Trading and Trends

Holdings & Transactions