Reference is made to the stock exchange announcement by Siem Offshore Inc. (the "Company") on 26 May 2021 with key information about the share consolidation and change of ISIN. The share consolidation of 100:1 which will increase the par value of the Company's shares from USD 0.01 to USD 1.00 will be registered on 2 June 2021 and at the same time the Company's shares will be registered on a new ISIN, KYG812291253 .Accordingly, today 1 June 2021 is the last day in which the Company's shares have a par value of USD 0.01 and are registered on ISIN KYG813131011.

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