Perestroika SEC EDGAR Filings (CIK 0001729635)

SEC EDGAR filings, ownership reports, and insider transactions for 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

Recent SEC filings for Perestroika including 4, 4/A, SC 13D/A and more.

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

About this filer

Perestroika files with the SEC under CIK 0001729635. This page aggregates EDGAR filings and related ownership activity.

See reporting owner transactions.

FAQ

What is a CIK?
A Central Index Key (CIK) is a unique identifier assigned by the SEC to each filer.
Why are some filings missing?
New filings appear as the SEC updates EDGAR, and older records can vary by availability.
How often is this page updated?
Updates follow new EDGAR submissions and periodic data refreshes.

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