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.

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