LDOS · Annual Report (Form 10-K) · Filed February 17, 2026

Leidos Holdings Inc — 10-K exhibit

ldos1022026ex21.htm

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Exhibit 21

SUBSIDIARIES

In accordance with SEC rules, the following is a list of Leidos Holdings, Inc.'s subsidiaries as of January 2, 2026, other than those subsidiaries, considered in the aggregate as a single subsidiary, that would not constitute a “significant subsidiary” as of January 2, 2026.

This list of subsidiaries will change from year-to-year as a result of changes in Leidos' and its subsidiaries’ results of operations and financial condition, legal entity consolidations and any sales and other dispositions of Leidos Holdings, Inc.'s subsidiaries. Accordingly, this list is not representative of the total number of subsidiaries that Leidos Holdings, Inc. may have at any given time.


Name			Jurisdiction of Formation
Leidos, Inc.			Delaware
Leidos Biomedical Research, Inc.			Delaware
Leidos Consulting Engineers, Inc.			California
Leidos Engineering, LLC			Delaware
Leidos Global Technology Corporation			Delaware
Leidos Services, Inc.			Delaware
Leidos Intermediate Holdings, Inc.			Delaware
Leidos Government Services, Inc.			Maryland
Leidos Integrated Technology, LLC			Delaware
Hanford Mission Integration Solutions, LLC			Delaware
QTC Holdings, Inc.			Delaware
QTC Management, Inc.			California
QTC Medical Services, Inc.			California
Leidos Digital Solutions, Inc.			Virginia
Leidos New Zealand Limited			New Zealand
Dynetics, Inc.			Alabama
Dynetics Technical Solutions, Inc.			Alabama
SPIRE Manufacturing Solutions, LLC			Colorado
Leidos Security Detection & Automation, Inc.			Delaware
1901 Group, LLC			Virginia
Gibbs & Cox, Inc.			New York
Savanna Industries, Inc.			Virginia
Kudu Dynamics LLC			Virginia

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