Starboard Principal Co LP

See Footnote 2 at GREEN DOT CORP · on record since Mar 8, 2024
10% owner at DSP GROUP INC /DE/ · on record since Apr 23, 2012
10% owner at WAUSAU PAPER CORP. · on record since Sep 25, 2012
10% owner at ODP Corp · on record since Sep 17, 2012
10% owner at SURMODICS INC · on record since Aug 10, 2012
10% owner at QUANTUM CORP /DE/ · on record since Nov 1, 2012
10% owner at EXTREME NETWORKS INC · on record since Feb 11, 2013
Former 10% Owner at DSP GROUP INC /DE/ · on record since Jul 26, 2013
10% owner at MICREL INC · on record since Aug 11, 2014
10% owner at INSPERITY, INC. · on record since Jan 20, 2015
10% owner at INTEGRATED SILICON SOLUTION INC · on record since May 4, 2015
10% owner at Mellanox Technologies, Ltd. · on record since Mar 2, 2018
Director at Cyxtera Technologies, Inc. · on record since Aug 3, 2021
10% owner at Cyxtera Technologies, Inc. · on record since Aug 3, 2021
10% owner at ACACIA RESEARCH CORP · on record since Mar 3, 2023
See Footnote 2 at ACACIA RESEARCH CORP · on record since Mar 3, 2023
10% owner at BILL Holdings, Inc. · on record since Aug 31, 2026
See Footnote 2 at BILL Holdings, Inc. · on record since Aug 31, 2026

Insider trading activity of Starboard Principal Co LP

Transactions on record: 25; since Aug 10, 2012

Open-market buys: 1; $1.2M

Open-market sells: 18; $5.1M

Companies traded: 4; last filing May 16, 2025

Figures computed from official regulatory filings — .

Companies where Starboard Principal Co LP has traded

4 tx · $26.3M · May 16, 2025
6 tx · $540K · Jun 8, 2023
3 tx · $1.2M · Mar 15, 2013
12 tx · $4.6M · Aug 10, 2012

Track record of Starboard Principal Co LP

Insufficient history for a statistical track record (fewer than 5 open-market buys).

Transaction history of Starboard Principal Co LP

Co-insiders of Starboard Principal Co LP

This page republishes public regulatory disclosures.

Company	Filed	Type	Qty	Price	Value · USD	Signals	Src
ACACIA RESEARCH CORPListing on record	May 16, 2025	Other	-3,255,169	3.71 USD	$12.1M		SEC
ACACIA RESEARCH CORPListing on record	May 16, 2025	Other	-290,000	3.71 USD	$1.1M		SEC
ACACIA RESEARCH CORPListing on record	May 16, 2025	Other	290,000	3.71 USD	$1.1M		SEC
ACACIA RESEARCH CORPListing on record	May 16, 2025	Other	3,255,169	3.71 USD	$12.1M		SEC
Cyxtera Technologies, Inc.Listing unverified	Jun 8, 2023	Sell	-1,429,992	0.06 USD	$85.8K		SEC
Cyxtera Technologies, Inc.Listing unverified	Jun 8, 2023	Sell	-890,350	0.06 USD	$53.4K		SEC
Cyxtera Technologies, Inc.Listing unverified	Jun 8, 2023	Sell	-529,375	0.06 USD	$31.8K		SEC
Cyxtera Technologies, Inc.Listing unverified	Jun 8, 2023	Sell	-715,244	0.06 USD	$42.9K		SEC
Cyxtera Technologies, Inc.Listing unverified	Jun 8, 2023	Sell	-406,849	0.06 USD	$24.4K		SEC
Cyxtera Technologies, Inc.Listing unverified	Jun 8, 2023	Sell	-5,028,190	0.06 USD	$301.7K		SEC
QUANTUM CORP /DE/Listing on record	Mar 15, 2013	Buy	1,000,000	1.22 USD	$1.2M	conv 41First in 12mo	SEC
QUANTUM CORP /DE/Listing on record	Mar 15, 2013	BuyD (derivative)	0	102.86 USD	n/a (Converted to USD in the nightly refresh)		SEC
QUANTUM CORP /DE/Listing on record	Mar 15, 2013	BuyD (derivative)	0	102.95 USD	n/a (Converted to USD in the nightly refresh)		SEC
SURMODICS INCListing unverified	Aug 10, 2012	Sell	-4,250	17.70 USD	$75.2K		SEC
SURMODICS INCListing unverified	Aug 10, 2012	Sell	-127,500	17.77 USD	$2.3M	Unusual size	SEC
SURMODICS INCListing unverified	Aug 10, 2012	Sell	-2,750	17.77 USD	$48.9K		SEC
SURMODICS INCListing unverified	Aug 10, 2012	Sell	-6,550	17.72 USD	$116.1K		SEC
SURMODICS INCListing unverified	Aug 10, 2012	Sell	-19,650	17.72 USD	$348.2K		SEC
SURMODICS INCListing unverified	Aug 10, 2012	Sell	-42,500	17.77 USD	$755.2K	Unusual size	SEC
SURMODICS INCListing unverified	Aug 10, 2012	Sell	-75	17.58 USD	$1.3K		SEC
SURMODICS INCListing unverified	Aug 10, 2012	Sell	-12,750	17.70 USD	$225.7K		SEC
SURMODICS INCListing unverified	Aug 10, 2012	Sell	-25	17.58 USD	$439.5		SEC
SURMODICS INCListing unverified	Aug 10, 2012	Sell	-8,250	17.77 USD	$146.6K		SEC
SURMODICS INCListing unverified	Aug 10, 2012	Sell	-24,945	17.61 USD	$439.3K		SEC
SURMODICS INCListing unverified	Aug 10, 2012	Sell	-8,315	17.61 USD	$146.4K		SEC

Company	Filed	Type	Qty	Price	Value · USD	Signals	Src
ACACIA RESEARCH CORPListing on record	May 16, 2025	Other	-3,255,169	3.71 USD	$12.1M		SEC
ACACIA RESEARCH CORPListing on record	May 16, 2025	Other	-290,000	3.71 USD	$1.1M		SEC
ACACIA RESEARCH CORPListing on record	May 16, 2025	Other	290,000	3.71 USD	$1.1M		SEC
ACACIA RESEARCH CORPListing on record	May 16, 2025	Other	3,255,169	3.71 USD	$12.1M		SEC
Cyxtera Technologies, Inc.Listing unverified	Jun 8, 2023	Sell	-1,429,992	0.06 USD	$85.8K		SEC
Cyxtera Technologies, Inc.Listing unverified	Jun 8, 2023	Sell	-890,350	0.06 USD	$53.4K		SEC
Cyxtera Technologies, Inc.Listing unverified	Jun 8, 2023	Sell	-529,375	0.06 USD	$31.8K		SEC
Cyxtera Technologies, Inc.Listing unverified	Jun 8, 2023	Sell	-715,244	0.06 USD	$42.9K		SEC
Cyxtera Technologies, Inc.Listing unverified	Jun 8, 2023	Sell	-406,849	0.06 USD	$24.4K		SEC
Cyxtera Technologies, Inc.Listing unverified	Jun 8, 2023	Sell	-5,028,190	0.06 USD	$301.7K		SEC
QUANTUM CORP /DE/Listing on record	Mar 15, 2013	Buy	1,000,000	1.22 USD	$1.2M	conv 41First in 12mo	SEC
QUANTUM CORP /DE/Listing on record	Mar 15, 2013	BuyD (derivative)	0	102.86 USD	n/a (Converted to USD in the nightly refresh)		SEC
QUANTUM CORP /DE/Listing on record	Mar 15, 2013	BuyD (derivative)	0	102.95 USD	n/a (Converted to USD in the nightly refresh)		SEC
SURMODICS INCListing unverified	Aug 10, 2012	Sell	-4,250	17.70 USD	$75.2K		SEC
SURMODICS INCListing unverified	Aug 10, 2012	Sell	-127,500	17.77 USD	$2.3M	Unusual size	SEC
SURMODICS INCListing unverified	Aug 10, 2012	Sell	-2,750	17.77 USD	$48.9K		SEC
SURMODICS INCListing unverified	Aug 10, 2012	Sell	-6,550	17.72 USD	$116.1K		SEC
SURMODICS INCListing unverified	Aug 10, 2012	Sell	-19,650	17.72 USD	$348.2K		SEC
SURMODICS INCListing unverified	Aug 10, 2012	Sell	-42,500	17.77 USD	$755.2K	Unusual size	SEC
SURMODICS INCListing unverified	Aug 10, 2012	Sell	-75	17.58 USD	$1.3K		SEC
SURMODICS INCListing unverified	Aug 10, 2012	Sell	-12,750	17.70 USD	$225.7K		SEC
SURMODICS INCListing unverified	Aug 10, 2012	Sell	-25	17.58 USD	$439.5		SEC
SURMODICS INCListing unverified	Aug 10, 2012	Sell	-8,250	17.77 USD	$146.6K		SEC
SURMODICS INCListing unverified	Aug 10, 2012	Sell	-24,945	17.61 USD	$439.3K		SEC
SURMODICS INCListing unverified	Aug 10, 2012	Sell	-8,315	17.61 USD	$146.4K		SEC