Ducommun Inc.

DCO·NYSE·$150.03Share Price as of 11/2·$2BMarket Cap as of 11/2

Financials

10-QQ3 ended 07/04/2608/06/26 10-QQ2 ended 04/04/2605/12/26 10-K/AFY 202505/08/26 10-KFY 202502/26/26 10-QQ3 ended 09/27/2511/06/25

Disclosures

8-KCurrent report08/06/26 8-KCurrent report05/12/26 8-KCurrent report05/04/26 8-KCurrent report05/01/26 8-KCurrent report04/30/26

Prospectuses and Registrations

S-8Registration of securities for employees05/12/26 S-3ASRAutomatic shelf registration11/14/25 S-8Registration of securities for employees04/25/24 424B5Prospectus supplement05/17/23 424B5Prospectus supplement05/15/23

Proxies

DEF 14ADefinitive proxy03/13/26 DEFA14AAdditional proxy materials03/13/26 DEF 14ADefinitive proxy03/14/25 DEFA14AAdditional proxy materials03/14/25 DEF 14ADefinitive proxy03/13/24

Ownership

SC 13GBeneficial ownership10/27/26 Form 4Insider transaction08/19/26 144Proposed sale of securities08/18/26 Form 4Insider transaction08/13/26 4/AInsider transaction (amended)08/13/26

Other

SDConflict Minerals disclosure05/21/26 ARSAnnual report to shareholders03/13/26 SDConflict Minerals disclosure05/16/25 ARSAnnual report to shareholders03/14/25 UPLOADLetter from the SEC07/08/24