Perestroika has bought RIG on 8 days since Mar 2018

Perestroika is a Norwegian investment company specializing in sectors such as oil and gas, shipping, infrastructure, real estate development, and financial services.( It operates through entities including Perestroika AS and its wholly owned subsidiary Perestroika (Cyprus) Ltd., with Frederik W. Mohn serving as the sole owner, managing director, and director of Perestroika AS.( As a significant shareholder and designated corporate insider (Director) at Transocean Ltd. (NYSE: RIG), Perestroika has actively increased its stake, purchasing 4,000,000 shares on September 26, 2025, at $3.05 per share for $12.2 million, bringing holdings to 95,074,894 shares, and an additional 1,500,000 shares on November 24, 2025, at $4.02 per share.(

Perestroika's investments align with strategic opportunities in energy and related industries, exemplified by its ten percent ownership in Transocean, a leading offshore drilling contractor.( Under Mohn's leadership, who is also a Transocean director and Chair of EMGS ASA's board since 2021, the firm demonstrates confidence in Transocean amid the company's debt management and profitability outlook.(

Written by Perplexity from public sources.