Ventura Offshore Holding Ltd.: SSV Catarina Exercise of 2nd Optional Well

October 1, 2025 - Ventura Offshore Holding Ltd. (the "Company") is pleased to announce that our customer, Eni Indonesia, has exercised the second of four optional wells in Indonesia for the semisubmersible drilling rig, SSV Catarina.

The exercise of this second optional well is expected to keep the rig utilized into the first quarter of 2026 and it further increases the firm backlog of the Company by approximately $10 million. Further exercise by Eni of the remaining two optional wells in Indonesia could keep the rig utilized through Q2 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 deep water offshore drilling services to the oil and gas industry. The Company's core activities are focused in the Brazilian offshore oil and gas market. The Company owns and operates one drillship, DS Carolina, and two semisubmersible drilling rigs, SSV Victoria and SSV Catarina, and manages one drillship, DS Zonda. The Company is incorporated under the laws of Bermuda.

Additional information about Ventura Offshore Holding can be found at https://ventura-offshore.com/en/a-ventura/.