Ventura Offshore Holding Ltd.: SSV Catarina Contract Amendment for Additional Well

24 September 2026 - Ventura Offshore Holding Ltd. (the "Company") is pleased to announce the execution of a contract amendment with our customers Searah West Ganal Limited and Searah Ganal Deepwater Limited (both subsidiaries of Searah Limited, a joint venture Company between Eni and PETRONAS), covering the drilling of the JKNE Upside-1 Dir well by our semisubmersible drilling rig, SSV Catarina.

This well, which is in addition to the four optional wells exercised previously, further increases the firm backlog of the Company by approximately $21.7 million and is expected to keep the rig utilized into December 2026.

For further queries, please contact:

Mardonildo Filho Chief Strategy Officer +55 21 97166 1978 mardonildo.filho@ventura-offshore.com

About Ventura Offshore Holding Ltd. Ventura Offshore Holding Ltd. is a deep-water drilling contractor providing offshore drilling services to the oil and gas industry since 1998 in Brazil and worldwide. The Company owns and operates one drillship, DS Carolina, and two semisubmersible drilling rigs, SSV Victoria and SSV Catarina, and further manages one drillship, Atlantic Zonda. The drilling rigs are currently operating offshore Brazil and Indonesia. The Company is incorporated under the laws of Bermuda and was listed on Euronext Growth Oslo on June 5, 2024, under the ticker "VTURA". Additional information about Ventura Offshore Holding can be found at https://ventura-offshore.com/en/a-ventura/.