// company-profile
Amentum Holdings, Inc. Insider Trading
AMTMEvery SEC Form 4 insider trading filing for Amentum Holdings, Inc. (AMTM) — open-market buys and sells by directors and officers, option exercises, and cluster activity, updated as each filing is reported to the SEC.
curl "https://api.form4api.com/v1/transactions?ticker=AMTM" -H "X-Api-Key: YOUR_API_KEY"// activity-summary
No insider transactions in the last 30 days.
No insider activity recorded for AMTM in the last 90 days.
Institutional Ownership
Top 13F-HR holders of Amentum Holdings, Inc. as of 2026-06-30
Data source: quarterly 13F-HR filings — institutional holders report positions within 45 days of quarter end. Joined with insider activity above — see who's loading up institutionally while insiders are trading. Full 13F-HR API →
Insider Transactions
Sourced from SEC EDGAR Form 4 filings. Updated hourly.
| Date | Insider | Company | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| May 6, 2026 | Johnson Travis Barton | AMTM | Option Exercise | 13,609 | — | — |
| May 6, 2026 | Bruning Jill L | AMTM | Tax Withholding | 2,731 | $24.89 | $68K |
| May 6, 2026 | Arnette Stephen A | AMTM | Option Exercise | 13,609 | — | — |
| May 6, 2026 | Arnette Stephen A | AMTM | Tax Withholding | 3,314 | $24.89 | $82K |
| May 6, 2026 | Heller John E. | AMTM | Option Exercise | 18,145 | — | — |
45 more transactions hidden
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