Welcome to our dedicated page for Amentum Holdings SEC filings (Ticker: AMTM), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.
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, Inc. reported slightly lower sales but much stronger profitability for the quarter ended July 3, 2026. Quarterly revenues were $3,490 million, down 2.0% year over year, while net income attributable to common shareholders rose to $66 million from $10 million, with diluted EPS of $0.27.
For the first nine months of fiscal 2026, revenues were $10,205 million versus $10,468 million a year earlier, but net income attributable to common shareholders increased to $164 million and diluted EPS to $0.67. Adjusted EBITDA reached $828 million for the nine-month period.
Total debt declined to $3,875 million, helped by a $125 million voluntary prepayment on Term Loan B and an amended credit facility that introduced a Term Loan A and expanded the revolver to $1 billion. Cash and cash equivalents were $459 million, and total backlog grew to $48.2 billion, including funded backlog of $6.2 billion. The company reported remaining performance obligations of $8.9 billion and remained in compliance with debt covenants.
Amentum Holdings, Inc. reported third quarter fiscal 2026 results with revenue of $3,490 million, down 2% year over year, primarily due to contract transitions to unconsolidated joint ventures and prior-year divestitures, partially offset by new awards in critical digital infrastructure and space systems.
Operating income rose to $172 million from $103 million, supported by strong operational performance and lower intangible amortization. Net income attributable to common shareholders was $66 million, up from $10 million, and diluted EPS grew to $0.27 from $0.04, aided by higher operating income and lower interest expense.
On a non-GAAP basis, Adjusted EBITDA was $290 million with an 8.3% margin, up from 7.7%, and Adjusted diluted EPS increased to $0.67 from $0.56. Free cash flow was $135 million, up 35%. As of July 3, 2026, Amentum held $459 million of cash and $3,875 million of gross debt, implying Net Leverage of 3.0x. Backlog reached $48.2 billion with funded backlog of $6.2 billion and a last twelve months book-to-bill of 1.3x.
The company highlighted over $400 million in global nuclear energy awards, approximately $250 million in critical digital infrastructure contracts, and over $1 billion in classified defense awards, plus major NASA COSMOS (~$500 million) and CMOE II ($974 million) contracts now reflected in backlog. Amentum raised fiscal 2026 guidance for Adjusted EBITDA to $1,115–$1,140 million and for Adjusted diluted EPS to $2.40–$2.50, while maintaining revenue and free cash flow ranges.
PRIMECAP MANAGEMENT CO/CA/ has disclosed a significant ownership position in Amentum Holdings, Inc. The institutional investor reports beneficial ownership of 12,285,504 COMM shares, representing 5.03% of the class.
PRIMECAP holds sole voting power over 12,185,573 shares and sole dispositive power over all 12,285,504 shares, with no shared voting or dispositive authority. The filing identifies PRIMECAP as organized in the United States, with its principal office in Pasadena, California, and Amentum’s principal executive offices in Chantilly, Virginia.
Amentum Holdings, Inc. reported essentially flat quarterly revenue but sharply higher profitability. For the quarter ended April 3, 2026, revenue was $3,478 million, down 0.4% year over year, while operating income rose to $151 million, up 37.3%.
Net income attributable to common shareholders increased to $54 million from $4 million, with diluted EPS rising to $0.22 from $0.02. For the first six months, revenue declined 2.8% to $6,715 million, but net income grew to $98 million from $16 million, helped by lower amortization, reduced SG&A, higher equity earnings from joint ventures, and lower interest expense.
Backlog increased to $47.8 billion from $44.8 billion, and remaining performance obligations were $10.1 billion. Operating cash flow for the first six months was $89 million versus $167 million a year earlier. Total debt was $3,988 million and cash was $428 million. After quarter end, Amentum refinanced its credit facility, adding a $1,400 million Term Loan A, a $1,591 million Term Loan B, and increasing its revolver.
Amentum Holdings reported second-quarter fiscal 2026 revenue of $3.48 billion, essentially flat year-over-year, but delivered a sharp improvement in profitability. Net income rose to $54 million from $4 million, with diluted EPS increasing to $0.22 from $0.02, helped by stronger operating performance and lower interest expense.
On a non-GAAP basis, Amentum generated Adjusted EBITDA of $275 million and Adjusted EPS of $0.60, modestly above the prior year. Free cash flow strengthened to $220 million, reflecting strong cash earnings and working capital management. Backlog grew to $47.8 billion with a 1.2x book-to-bill ratio, supported by large wins in nuclear, critical digital infrastructure, and public safety.
The company also refinanced its capital structure with a new $1.4 billion Term Loan A and a larger $1.0 billion revolver, contributing to net leverage of 3.2x. Amentum reaffirmed its fiscal 2026 guidance, targeting revenue of $13.95–$14.30 billion, Adjusted EBITDA of $1.10–$1.14 billion, Adjusted EPS of $2.25–$2.45, and free cash flow of $525–$575 million.
Amentum Holdings, Inc. Chief Executive Officer John E. Heller reported routine equity compensation activity involving restricted stock units and related tax withholding.
On May 6, 2026, he exercised 18,145 restricted stock units, receiving the same number of shares of common stock. To cover tax obligations upon vesting, 8,184 shares of common stock were tendered at $24.89 per share, a non-market tax-withholding disposition rather than an open-market sale.
Following these transactions, Heller directly holds 376,019 shares of Amentum common stock and 18,146 restricted stock units, each representing a contingent right to receive one share, with vesting in two equal installments on the 18-month and three-year anniversaries of the grant date.
Amentum Holdings, Inc. Chief Growth Officer Sean Thomas Mullen reported routine equity compensation activity involving restricted stock units and related tax withholding. On May 6, 2026, 9,072 restricted stock units were exercised into an equal number of AMTM common shares, reflecting vesting of stock-based awards.
In connection with this vesting, 2,762 shares of AMTM common stock were tendered to cover tax withholding obligations, a non-market disposition. Following these transactions, Mullen directly held 32,448 shares of AMTM common stock and 9,073 restricted stock units, which vest in two installments on the 18-month and three-year anniversaries of the grant date.
Amentum Holdings, Inc. Chief Financial Officer Travis Barton Johnson reported equity compensation activity in the company’s common stock. On May 6, 2026, restricted stock units representing 13,609 shares of AMTM common stock vested and were delivered. In connection with this vesting, 4,097 shares were tendered to cover tax withholding obligations, a non-market disposition. Following these transactions, Johnson directly holds 118,187 shares of Amentum common stock.
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.