Starboard Value LP
activist
SEC Filings & Insider Trading Activity 2026

CIK: 1517137 110 filings
13F-HR: 60
SC 13D: 50

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Latest 2026 SEC Filings: 10-K, 10-Q, 8-K & Form 4

FormFiling DatePeriodAnalysisSEC
13F-HR
May 15, 2026Mar 31, 2026-
13F-HR
Feb 17, 2026Dec 31, 2025-
13F-HR
Nov 14, 2025Sep 30, 2025-
13F-HR
Aug 14, 2025Jun 30, 2025-
13F-HR
May 15, 2025Mar 31, 2025-
13F-HR
Feb 14, 2025Dec 31, 2024-
SC 13D
Nov 26, 2024--
13F-HR
Nov 14, 2024Sep 30, 2024-
13F-HR
Aug 14, 2024Jun 30, 2024-
13F-HR
May 15, 2024Mar 31, 2024-
13F-HR
Feb 14, 2024Dec 31, 2023-
13F-HR
Nov 14, 2023Sep 30, 2023-
SC 13D
Aug 18, 2023--
13F-HR
Aug 11, 2023Jun 30, 2023-
SC 13D
Jun 30, 2023--
13F-HR
May 12, 2023Mar 31, 2023-
SC 13D
Mar 6, 2023--
13F-HR
Feb 14, 2023Dec 31, 2022-
13F-HR
Nov 14, 2022Sep 30, 2022-
SC 13D
Oct 20, 2022--
SC 13D
Sep 16, 2022--
13F-HR
Aug 12, 2022Jun 30, 2022-
13F-HR
May 13, 2022Mar 31, 2022-
SC 13D
Feb 28, 2022--
13F-HR
Feb 14, 2022Dec 31, 2021-

Frequently Asked Questions

Where can I find Starboard Value LP insider trading activity (Form 4)?

SignalX aggregates every Starboard Value LP Form 4 insider transaction from SEC EDGAR. Form 4 reports show when officers, directors, and 10% shareholders buy or sell company stock, with transaction code, share count, and price per share.

How often does Starboard Value LP file with the SEC?

Starboard Value LP files SC 13D disclosures (and amendments) when it acquires more than 5% of a company's shares or its stake or intentions change. If it manages over $100M in qualifying assets it also files quarterly 13F-HR holdings reports, due within 45 days of each quarter-end. SignalX monitors SEC EDGAR daily to surface every new Starboard Value LP filing.

What is the difference between 10-K, 10-Q, and 8-K SEC filings?

A 10-K is a comprehensive annual report with audited financials, business overview, and risk factors. A 10-Q is a shorter quarterly report with unaudited financials and management discussion. An 8-K is a current report filed when a material event occurs, such as earnings releases, executive changes, acquisitions, or other significant developments. SignalX provides AI-generated summaries for all three filing types for Starboard Value LP.

What is Starboard Value LP's SEC CIK number?

Starboard Value LP's SEC CIK (Central Index Key) number is 1517137. The CIK is a unique identifier assigned by the SEC to every filing entity. You can use CIK 1517137 to look up all Starboard Value LP filings on SEC EDGAR, or browse them here on SignalX with AI-powered analysis.

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Insider trading data, fund holdings, cross-signal detection, and AI-powered analysis for 110+ filings.