# Amentum JV Becomes Sellafield Preferred Supplier

Amentum Holdings reports that a joint venture involving the company holds preferred-supplier status on a UK Sellafield nuclear deal cited at $2.8 billion. The supplied information does not confirm a contract award, identify the joint-venture partner, or describe an open solicitation; Amentum’s broader profile covers digital, engineering, environmental remediation, nuclear, sustainment, and supply-chain services for government and international customers.

- Treat the preferred-supplier position as a potential teaming or subcontracting signal, not a confirmed award or currently open procurement.
- Contractors pursuing Sellafield-related work can assess whether Amentum or its joint venture may be a relevant teaming route, while confirming the deal’s scope and procurement status before making bid decisions.
- Amentum’s stated nuclear, engineering, environmental remediation, and supply-chain capabilities indicate areas of potential relevance to firms seeking complementary roles in the UK nuclear market.

**Jurisdictions:** federal
**Industries:** Energy & Utilities
**Topics:** Physical Infrastructure
**Published:** October 31, 2026

### Government Entities
- U.S. government

### Vendors
- Amentum Holdings, Inc. (Preferred supplier through a joint venture on the Sellafield deal)

### Sources
- [Amentum Holdings, Inc. (AMTM) Stock Price, News, Quote & History - Yahoo Finance](https://ca.finance.yahoo.com/quote/AMTM) - Yahoo! Finance Canada