Amentum Holdings, Inc. filings document regulatory reporting for an advanced engineering and technology solutions company serving government, international and commercial customers. The company’s Form 8-K filings report results of operations and financial condition, earnings releases, conference-call materials, material agreements and capital-structure changes, including senior secured term loan and revolving credit facility disclosures involving Amentum Services and Amentum Technology.
Proxy and annual meeting filings describe board elections, auditor ratification, executive compensation votes and related governance procedures. The filing record also documents shareholder voting results, risk and forward-looking statement language, and formal disclosure controls around Amentum’s public-company reporting obligations.
Amentum Holdings Chief Technology Officer Jill L. Bruning exercised 9,072 restricted stock units on May 6, 2026, receiving 9,072 shares of common stock. Of these, 2,731 shares were tendered at $24.89 per share to cover tax withholding. After these equity transactions, she directly holds 197,457 shares of Amentum common stock, including shares acquired under the employee stock purchase plan.
Amentum Holdings, Inc. Chief Operating Officer Stephen A. Arnette reported routine equity compensation activity involving restricted stock units. On May 6, 2026, 13,609 restricted stock units vested and were delivered as the same number of shares of AMTM common stock. Of these, 3,314 shares of common stock were tendered back to the company to satisfy tax withholding obligations, a non‑market disposition. As a result of these transactions, Arnette’s direct holdings increased, with the filing showing 109,966 shares of AMTM common stock held directly after the RSU-related activity.
Amentum Holdings Inc: Invesco Ltd. filed Amendment No. 3 to a Schedule 13G/A reporting beneficial ownership of 24,529,939 shares of Common Stock, equal to 10.1% of the class. The filing shows sole voting power of 24,481,944 shares and sole dispositive power of 24,529,939. The schedule lists related advisory subsidiaries and is signed by Robert R. Leveille on 05/07/2026.
Amentum Holdings, Inc. amended its existing credit facilities by entering into a new Credit Agreement that refinances prior borrowings and extends maturities. The agreement adds a new five-year senior secured term loan A facility of $1.400 billion, a senior secured term loan B facility of $1.591 billion and a new five-year senior secured revolving credit facility with commitments of $1.000 billion.
Amentum, Amentum Services and Amentum Technology used the new term loans, together with cash on hand, to repay in full all borrowings and other amounts under the prior credit agreement and to pay related fees and expenses. The term loan A and revolving facilities include a maximum first lien net leverage ratio covenant, while the term loan B has no financial maintenance covenants. All facilities are senior secured and guaranteed by substantially all tangible and intangible assets of Amentum and its wholly owned material domestic restricted subsidiaries.
The Vanguard Group filed Amendment No. 3 to a Schedule 13G reporting zero beneficial ownership of Amentum Holdings Inc common stock. The amendment explains an internal realignment on January 12, 2026 that caused certain Vanguard subsidiaries to disaggregate holdings, and states The Vanguard Group no longer has beneficial ownership of securities held by those subsidiaries.
The filing lists 0 shares and 0% beneficial ownership, and is signed by Ashley Grim, Head of Global Fund Administration, dated 03/26/2026.
Amentum Holdings, Inc. Chief Technology Officer Jill L. Bruning reported a disposition of common stock through a bona fide gift. On the reported date, she transferred 30,000 shares of Common Stock at a stated price of $0.0000 per share, described as a gift transfer. After this transaction, she held 190,999 shares of Common Stock in direct ownership.
Amentum Holdings, Inc. Chief Operating Officer Stephen A. Arnette reported equity award activity involving restricted stock units and common shares. On March 2, 2026, 2,808 restricted stock units were converted into 2,808 shares of AMTM common stock at a stated price of $0.00 per share upon vesting.
In connection with this vesting, 750 shares of AMTM common stock were tendered at $30.70 per share for tax withholding, a non-open-market, tax-related disposition. After these transactions, Arnette directly held 96,357 shares of AMTM common stock.
Amentum Holdings, Inc. Chief Legal Officer & GC Michele T. St. Mary reported equity award activity tied to restricted stock units on February 17, 2026. 7,080 restricted stock units vested and converted into the same number of common shares, and 2,308 common shares were withheld to cover taxes. Following these transactions, she directly owned 27,043 shares of common stock and 14,162 restricted stock units.
Amentum Holdings director Susan Leslie Ireland reported a stock grant from the company. On February 6, 2026, she acquired 5,062 shares of common stock at a stated price of $0, bringing her directly held beneficial ownership to 8,509 shares.
According to the footnote, these shares represent restricted stock units that will vest on the date of Amentum’s next annual meeting of stockholders, tying the award to continued board service until that meeting.
Amentum Holdings director Sandra E. Rowland reported stock awards tied to restricted stock units. On February 6, 2026, 11,564 restricted stock units converted into the same number of common shares at $0 per share as they vested. She also received a new grant of 5,062 common shares, also at $0 per share, which are described as restricted stock units that vest on the date of the issuer’s next annual stockholder meeting. After these transactions, she directly owned 20,073 shares of Amentum Holdings common stock.