Perestroika

Business address
Transocean Ltd, Turmstrasse 30, Steinhausen, 6312
Top holdings (ownership)
RIG
State of incorporation
Switzerland
Fiscal year end
31 December
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Perestroika has filed 29 SEC EDGAR filings since 01 Feb 2018

Latest Filings

Form type Document Filing Description Filing date Reporting date File number(s)
4 Open Document Open Filing 25 Nov 2025 24 Nov 2025 001-38373
4 Open Document Open Filing 30 Sep 2025 26 Sep 2025 001-38373
4 Open Document Open Filing 13 Sep 2024 12 Sep 2024 001-38373
4 Open Document Open Filing 05 Aug 2024 02 Aug 2024 001-38373
4 Open Document Open Filing 17 May 2024 15 May 2024 001-38373
4 Open Document Open Filing 29 Feb 2024 27 Feb 2024 001-38373
4 Open Document Open Filing 19 Sep 2023 15 Sep 2023 001-38373
4 Open Document Open Filing 25 Apr 2023 21 Apr 2023 001-38373
4/A Open Document Open Filing 25 Apr 2023 13 May 2022 001-38373
SC 13D/A Open Document Open Filing SC 13D/A 19 Dec 2022
4 Open Document Open Filing 17 May 2022 13 May 2022 001-38373
SC 13D/A Open Document Open Filing SC 13D/A 17 May 2022
4 Open Document Open Filing FORM 4 - 28 Jun 2021 25 Jun 2021 001-38373
4 Open Document Open Filing FORM 4 - 25 Jun 2021 23 Jun 2021 001-38373
SC 13D/A Open Document Open Filing SC 13D/A 24 Jun 2021
4 Open Document Open Filing FORM 4 - 23 Jun 2021 21 Jun 2021 001-38373
4 Open Document Open Filing FORM 4 - 21 Jun 2021 17 Jun 2021 001-38373
4 Open Document Open Filing FORM 4 - 17 Jun 2021 15 Jun 2021 001-38373
SC 13D/A Open Document Open Filing SCHEDULE 13D 18 Aug 2020
4 Open Document Open Filing FORM 4 - 18 Aug 2020 14 Aug 2020 001-38373
SC 13D/A Open Document Open Filing SC 13D/A 04 Sep 2018
4 Open Document Open Filing FORM 4 - 03 Jul 2018 03 Jul 2018 001-38373
SC 13D/A Open Document Open Filing SC 13D/A 03 Jul 2018
SC 13D/A Open Document Open Filing SC 13D/A 18 Jun 2018
4 Open Document Open Filing FORM 4 - 15 Jun 2018 15 Jun 2018 001-38373
4 Open Document Open Filing FORM 4 - 05 Mar 2018 01 Mar 2018 001-38373
SC 13D Open Document Open Filing SC 13D 05 Feb 2018
3 Open Document Open Filing FORM 3 - 01 Feb 2018 30 Jan 2018 001-38373
4 Open Document Open Filing FORM 4 - 01 Feb 2018 30 Jan 2018 001-38373