Oceaneering International Inc.

OII·NYSE·$39.05Share Price as of 11/2·$4BMarket Cap as of 11/2

Financials

10-QQ3 ended 09/30/2610/22/26 10-QQ2 ended 06/30/2607/23/26 10-QQ1 ended 03/31/2604/23/26 10-KFY 202502/20/26 10-QQ3 ended 09/30/2510/23/25

Disclosures

8-KCurrent report10/21/26 8-KCurrent report09/08/26 8-KCurrent report07/24/26 8-KCurrent report07/22/26 8-KCurrent report07/07/26

Prospectuses and Registrations

S-8Registration of securities for employees05/29/25 S-3ASRAutomatic shelf registration11/25/24 424B3Prospectus12/22/23 S-4Registration (business combination)12/06/23 S-3ASRAutomatic shelf registration11/24/21

Proxies

DEF 14ADefinitive proxy04/02/26 DEFA14AAdditional proxy materials04/02/26 DEF 14ADefinitive proxy03/28/25 DEFA14AAdditional proxy materials03/28/25 DEF 14ADefinitive proxy03/29/24

Ownership

Form 4Insider transaction10/05/26 144Proposed sale of securities10/01/26 SC 13G/ABeneficial ownership (amended)08/14/26 Form 4Insider transaction08/10/26 144Proposed sale of securities08/07/26

Other

11-KEmployee stock purchase plan report06/26/26 SDConflict Minerals disclosure05/28/26 11-KEmployee stock purchase plan report06/26/25 SDConflict Minerals disclosure05/29/25 UPLOADLetter from the SEC08/12/24