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AMTMAmentum Holdings, Inc.

SEC Filings

Filing links are provided when reliable SEC filing data is available.

Recent Filings

FormFiling DateAcceptedDocument
10-QMay 12, 2026May 12, 2026View filing
8-KMay 11, 2026May 11, 2026View filing
4May 7, 2026May 7, 2026View filing
4May 7, 2026May 7, 2026View filing
4May 7, 2026May 7, 2026View filing
4May 7, 2026May 7, 2026View filing
4May 7, 2026May 7, 2026View filing
SC 13G/AMay 7, 2026May 7, 2026View filing
8-KApr 28, 2026Apr 28, 2026View filing
SC 13G/AMar 26, 2026Mar 26, 2026View filing
4Mar 5, 2026Mar 5, 2026View filing
4Mar 4, 2026Mar 4, 2026View filing
4Feb 18, 2026Feb 18, 2026View filing
4Feb 10, 2026Feb 10, 2026View filing
4Feb 10, 2026Feb 10, 2026View filing
4Feb 10, 2026Feb 10, 2026View filing
4Feb 10, 2026Feb 10, 2026View filing
4/AFeb 10, 2026Feb 10, 2026View filing
4Feb 10, 2026Feb 10, 2026View filing
4Feb 10, 2026Feb 10, 2026View filing
4Feb 10, 2026Feb 10, 2026View filing
8-KFeb 10, 2026Feb 10, 2026View filing
10-QFeb 10, 2026Feb 10, 2026View filing
8-KFeb 9, 2026Feb 9, 2026View filing
4Jan 29, 2026Jan 29, 2026View filing
4/ADec 19, 2025Dec 19, 2025View filing
4/ADec 19, 2025Dec 19, 2025View filing
4/ADec 19, 2025Dec 19, 2025View filing
4Dec 19, 2025Dec 19, 2025View filing
ARSDec 19, 2025Dec 19, 2025View filing

About Amentum Holdings, Inc.

Amentum Holdings, Inc. is a provider of critical, technology-driven services, serving both governmental and commercial sectors. Its operations are structured around two distinct segments: Critical Mission Solutions and Cyber & Intelligence. The Critical Mission Solutions (CMS) segment delivers comprehensive support across various domains. This includes testing, training, and operational oversight for advanced missile defense systems. It also furnishes IT and engineering expertise to both defense organizations and the burgeoning space sector. Moreover, CMS offers technological solutions to energy clients, encompassing installation, decommissioning, and vital environmental remediation efforts, in addition to specialized technical consulting services. Meanwhile, the Cyber & Intelligence (C&I) segment focuses on advanced cyber training and sophisticated data analytics for government professionals. It also deploys cutting-edge communication systems and aerial mapping technologies for national security applications, alongside other specialized technical support for U.S. defense and intelligence agencies. Established on November 26, 2019, the company maintains its corporate headquarters in Chantilly, VA.

Chantilly, DE
53,000 employees
Industrials / Aerospace & Defense
Sector
Industrials
Industry
Aerospace & Defense
CEO
John E. Heller