Orion Group Holdings Inc.

ORN·NYSE·$14.38Share Price as of 11/2·$582MMarket Cap as of 11/2

Financials

10-QQ3 ended 09/30/2610/28/26 10-QQ2 ended 06/30/2607/29/26 10-QQ1 ended 03/31/2604/29/26 10-KFY 202503/04/26 10-QQ3 ended 09/30/2510/29/25

Disclosures

8-KCurrent report10/28/26 8-KCurrent report10/15/26 8-KChange in Directors or Officers09/21/26 8-K/ARegulation FD Disclosure08/04/26 8-KResults of Operations; Regulation FD Disclosure07/29/26

Prospectuses and Registrations

S-8Registration of securities for employees05/20/26 424B5Prospectus supplement09/11/24 424B5Prospectus supplement09/10/24 S-3/AShelf registration (amended)05/23/24 S-3Shelf registration05/20/24

Proxies

DEF 14ADefinitive proxy04/01/26 DEFA14AAdditional proxy materials04/01/26 PRE 14APreliminary proxy03/17/26 DEF 14ADefinitive proxy04/01/25 DEFA14AAdditional proxy materials04/01/25

Ownership

SC 13GBeneficial ownership10/09/26 Form 4Insider transaction09/17/26 Form 4Insider transaction09/17/26 Form 4Insider transaction09/17/26 Form 4Insider transaction08/04/26

Other

ARSAnnual report to shareholders04/01/26 UPLOADLetter from the SEC09/10/25 CORRESPCorrespondence with the SEC09/05/25 UPLOADLetter from the SEC09/02/25 8-A12B8-A12B05/28/25