Oceaneering International, Inc. ("Oceaneering") (NYSE:OII) announced its participation at upcoming investor conferences during the third quarter of 2026.

• Barclays Energy-Power Conference
  
  New York, NY - September 9, 2026
  
  Rod Larson, President and Chief Executive Officer, will participate in a panel discussion. Mr. Larson, Mike Sumruld, Chief Financial Officer, and Hilary Frisbie, Senior Director of Investor Relations, will meet with institutional investors.

• Gabelli Aerospace & Defense Symposium
  
  New York, NY – September 10, 2026
  
  Mr. Larson will present on Oceaneering’s Aerospace and Defense Technologies segment. Mr. Larson, Mr. Sumruld, and Ms. Frisbie will meet with institutional investors.

• TD Cowen Energy Conference
  
  Austin, TX – September 24, 2026
  
  Mr. Sumruld and Ms. Frisbie will meet with institutional investors.

• PEP Energy Conference
  
  Austin, TX – September 29, 2026
  
  Mr. Sumruld and Ms. Frisbie will meet with institutional investors.

Oceaneering’s most recent presentation is available on its Investor Relations site.

Oceaneering is a global technology company delivering engineered services and products and robotic solutions to the offshore energy, defense, aerospace, and manufacturing industries.

For more information, please visit www.oceaneering.com.

View source version on businesswire.com: https://www.businesswire.com/news/home/20260811894469/en/

Hilary Frisbie

Senior Director, Investor Relations

713-329-4755

investorrelations@oceaneering.com