Leidos Holdings, Inc.

LDOS·NYSE·$128.12Share Price as of 11/2·$16BMarket Cap as of 11/2

Financials

10-QQ2 ended 07/03/2608/04/26 10-QQ1 ended 04/03/2605/05/26 10-KFY 202602/17/26 10-QQ3 ended 10/03/2511/04/25 10-QQ2 ended 07/04/2508/05/25

Disclosures

8-KCurrent report10/05/26 8-KCurrent report10/01/26 8-KCurrent report08/04/26 8-KCurrent report05/06/26 8-KCurrent report05/05/26

Prospectuses and Registrations

S-8Registration of securities for employees05/01/26 424B2Prospectus for primary offering02/20/26 424B2Prospectus for primary offering02/19/26 FWPFree writing prospectus02/19/26 S-3ASRAutomatic shelf registration02/19/26

Proxies

DEF 14ADefinitive proxy03/19/26 DEFA14AAdditional proxy materials03/19/26 DEF 14ADefinitive proxy03/17/25 DEFA14AAdditional proxy materials03/17/25 PRE 14APreliminary proxy03/07/25

Ownership

Form 4Insider transaction10/09/26 Form 3Initial insider ownership10/05/26 Form 4Insider transaction10/02/26 Form 4Insider transaction10/02/26 Form 4Insider transaction10/02/26

Other

11-KEmployee stock purchase plan report06/18/26 SDConflict Minerals disclosure05/29/26 11-KEmployee stock purchase plan report06/20/25 SDConflict Minerals disclosure05/23/25 11-KEmployee stock purchase plan report06/21/24