The senior vice president, general counsel and assistant corporate secretary for Transocean Ltd. has announced he is leaving the company, effective immediately.

Nick Deeming, who started working as Transocean’s GC in 2007, is citing personal reasons for his departure. Deputy General Counsel Michael Munro and Associate General Counsel David Schwab will jointly take over the GC role. They both will report to CEO Steven Newman.

While the company announced in a press release that Deeming was leaving for personal reasons, it did not comment further on his work with the company.

Over the past few years, Deeming had seen the company through its share of legal troubles, specifically regarding the infamous Deepwater Horizon disaster.

On April 21, 2010, a fire broke out on Transocean’s semisubmersable Deepwater Horizon drilling rig, ultimately leading to an explosion, which killed 11 workers and injured 17 others. The explosion resulted in the largest oil spill in U.S. history, with approximately 200,000 gallons of oil being dumped into the Gulf of Mexico each day until July 15, 2010. Not surprisingly, Transocean found itself in court defending its rig and actions following the disaster.

Read more InsideCounsel stories about the aftermath of the Deepwater Horizon disaster:

Brazilian court upholds ban against Chevron and Transocean

Florida attorney general asks judge to delay approval of BP oil spill settlement

BP reaches $7.8 billion settlement with victims of Gulf oil spill

Brazilian oil workers union sues Chevron and Transocean

Brazil sues Chevron and Transocean over Rio de Janeiro oil spill