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SEC reporting owner

Starboard Principal Co LP SEC insider disclosures

Explore Starboard Principal Co LP's reporting-owner identity, issuer relationships, purchases, sales and SEC filing receipts.

As of 2026-10-14T07:26:40.310Z

Reporting owner CIK
0001517139
Issuers
14
Coverage
verified
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What is a Form 4?

Animation: what a Form 4 is, shown with one real example. Sonic Automotive (SAH) reporting owner Paul P. Rusnak bought 13,701 shares at $59.78 on Wednesday, October 7, 2026, transaction code P, an open-market purchase (S is a sale and A is an award from the company). A timeline marks the SEC's two-business-day filing deadline, which ends Friday, October 9. The SEC accepted the Form 4 at 4:33:21 PM ET on October 9, and NexusTrade treats it as public one minute later, at 4:34:21 PM ET. A lamp for NexusTrade's InsiderTrades indicator stays off from the trade date until that moment, then counts one purchase worth 13,701 × $59.78 = $819,045.78.
In this example the shares were bought on Oct 7, 2026, and NexusTrade's InsiderTrades indicator can count the purchase starting at 4:34:21 PM ET on Oct 9, one minute after the SEC accepted the Form 4.

A Form 4 is the SEC filing a company insider, such as an officer, director or 10% owner, uses to report a trade in the company's stock, generally within two business days. The animation follows one real filing as an example: Paul P. Rusnak's purchase of Sonic Automotive (SAH) shares on October 7, 2026.

The same reading applies to every row on this page. The trade date is when the shares changed hands. The available date is when NexusTrade treats the filing as public, and a NexusTrade InsiderTrades indicator counts a purchase (code P) or sale (code S) only from that moment. Code A awards are not counted as purchases.

Issuer relationships

A reporting-owner CIK identifies the filer across issuer relationships and name aliases. A filer may be an individual or an organization; the filing role is the relevant evidence.

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DSP GROUP INC /DE/0000915778DSPGNoNo
SURMODICS INC0000924717SRDXNoNo
WAUSAU PAPER CORP.0000105076WPPNoNo
OFFICE DEPOT INC0000800240ODPNoNo
QUANTUM CORP /DE/0000709283QTMNoNo
EXTREME NETWORKS INC0001078271EXTRNoNo
MICREL INC0000932111MCRLNoNo
INSPERITY, INC.0001000753NSPNoNo
INTEGRATED SILICON SOLUTION INC0000854701ISSINoNo
Mellanox Technologies, Ltd.0001356104MLNXNoNo
Cyxtera Technologies, Inc.0001794905CYXTNoYes
ACACIA RESEARCH CORP0000934549ACTGNoNo
GREEN DOT CORP0001386278GDOTNoNo
BILL Holdings, Inc.0001786352BILLNoNo
DSP GROUP INC /DE/ ↗SURMODICS INC ↗WAUSAU PAPER CORP. ↗OFFICE DEPOT INC ↗QUANTUM CORP /DE/ ↗EXTREME NETWORKS INC ↗MICREL INC ↗INSPERITY, INC. ↗INTEGRATED SILICON SOLUTION INC ↗Mellanox Technologies, Ltd. ↗Cyxtera Technologies, Inc. ↗ACACIA RESEARCH CORP ↗GREEN DOT CORP ↗BILL Holdings, Inc. ↗

Recent SEC transactions

Code P identifies a purchase, S a sale and A an award. Awards and open-market purchases describe different events. Use the public availability date when deciding when a researcher could have known about the transaction.

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Source evidence and strategy eligibility

The transactions below come from filings; a historical tracker separately simulates following eligible events. Joint filers can report the same transaction, and an owner can have filings at multiple companies. Public availability, amendment lineage and verified coverage determine which events a historical tracker may use.

The current directory marks this owner's filing coverage verified.