What is Amentum's backlog?

Amentum reported $8.90B of remaining performance obligations at 3 Jul 2026, down 6% from a year earlier and down 12% from the previous quarter. That is 0.6 years of trailing revenue already under contract. Book-to-bill last quarter: 0.66.

How fast does Amentum's backlog turn into revenue?

Over the last twelve months Amentum recognised revenue equal to about 141% of the backlog it started each quarter with.

Amentum (AMTM) backlog: remaining performance obligations

How much revenue Amentum already has under contract, how fast it converts, and who it is with.

Data as of 7 Nov 2026.

Open the interactive Backlog view Amentum competitor analysis

Amentum reported $8.90B of remaining performance obligations at 3 Jul 2026, down 6% from a year earlier and down 12% from the previous quarter. That is 0.6 years of trailing revenue already under contract. Book-to-bill last quarter: 0.66.
Net new backlog added in the latest quarter: -$1.20B.
Over the last twelve months it turned about 141% of its opening backlog into revenue (12-month conversion).
79% of the backlog is due within the next twelve months.
Customer prepayments (contract liabilities) cover 1.9% of the backlog.
Twelve-month book-to-bill: 0.96, i.e. 0.96 of new orders for every 1 of revenue recognised.
Backlog growth minus revenue growth: -18 points — revenue is catching up with orders.
By backlog size it ranks 81st among US filers the cockpit tracks.

Amentum backlog history

Remaining performance obligations at each quarter end (bars) against trailing twelve-month revenue (line).

Amounts in USD. Source: SEC XBRL filings.
Quarter end	Backlog (RPO)	TTM revenue	Coverage	Customer prepayments
3 Jul 2026	$8.90B	$14.1B	0.6 yrs	$171M
3 Apr 2026	$10.1B	$14.2B	0.7 yrs	$180M
2 Jan 2026	$10.8B	$14.2B	0.8 yrs	$203M
3 Oct 2025	$9.90B	$14.4B	0.7 yrs	$227M
27 Jun 2025	$9.50B	$12.7B	0.7 yrs	$147M
28 Mar 2025	$10.7B	$11.3B	1.0 yrs	$112M
27 Dec 2024	$12.3B	$9.82B	1.3 yrs	$143M
27 Sep 2024	$12.9B	$8.39B	1.5 yrs	$113M
29 Sep 2023	$6.20B	$7.87B	0.8 yrs	$120M

Questions

What is Amentum's backlog?: Amentum reported $8.90B of remaining performance obligations at 3 Jul 2026, down 6% from a year earlier and down 12% from the previous quarter. That is 0.6 years of trailing revenue already under contract. Book-to-bill last quarter: 0.66.
How fast does Amentum's backlog turn into revenue?: Over the last twelve months Amentum recognised revenue equal to about 141% of the backlog it started each quarter with.

About these numbers

Remaining performance obligations (RPO) are revenue a company has contracted but not yet recognised, as reported in its SEC filings (XBRL tag RevenueRemainingPerformanceObligation). Coverage = backlog ÷ trailing twelve-month revenue. Book-to-bill = (change in backlog + revenue) ÷ revenue. Conversion = revenue recognised ÷ the backlog at the start of each quarter, summed over four quarters. Counterparty values come from company filings and releases.