The results for thefirst quarter ended 31 March 2021 will be published on Friday 28 May 2021 at 08:00 a.m. (CET) on theOslo Stock Exchange (ticker code: SIOFF) and on Siem Offshore Inc.'s website www.siemoffshore.com

A conference call will be held on 28 May 2021 at13:00 p.m. (CET) to review the presentation and discuss the first quarter release.

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The call will be hosted by Bernt Omdal - CEO,Siem Offshore Inc. and Dagfinn B. Lie - CFO, Siem Offshore Inc.

To join the audio conference, please click thelink below to join the webinar:
https://us02web.zoom.us/webinar/register/WN_NQnEWcWXQiiYz8HcIs_5bg

The conference call will be recorded and madeavailable on www.siemoffshore.com