Huntington Ingalls Industries, Inc.

HII·NYSE·$320.95Share Price as of 11/2·$13BMarket Cap as of 11/2

Financials

10-QQ3 ended 09/30/2610/29/26 10-QQ2 ended 06/30/2607/30/26 10-QQ1 ended 03/31/2605/05/26 10-KFY 202502/05/26 10-QQ3 ended 09/30/2510/30/25

Disclosures

8-KCurrent report10/29/26 8-KCurrent report10/20/26 8-KCurrent report07/30/26 8-KCurrent report05/05/26 8-KCurrent report05/01/26

Prospectuses and Registrations

POSASRProspectus / registration03/31/25 424B5Prospectus supplement11/14/24 424B5Prospectus supplement11/13/24 FWPFree writing prospectus11/13/24 S-3ASRAutomatic shelf registration08/05/24

Proxies

DEF 14ADefinitive proxy03/20/26 DEFA14AAdditional proxy materials03/20/26 DEF 14ADefinitive proxy03/21/25 DEFA14AAdditional proxy materials03/21/25 PRE 14APreliminary proxy03/03/25

Ownership

Form 3Initial insider ownership10/23/26 Form 4Insider transaction10/02/26 Form 4Insider transaction10/02/26 Form 4Insider transaction10/02/26 Form 4Insider transaction10/02/26

Other

11-KEmployee stock purchase plan report06/10/26 11-KEmployee stock purchase plan report06/10/26 SDConflict Minerals disclosure05/29/26 ARSAnnual report to shareholders03/20/26 11-KEmployee stock purchase plan report06/13/25