Sam Altman rejoins OpenAI board of directors as investigation into his ouster comes to a close

OpenAI on Friday announced its new board and the wrap-up of an internal investigation by U.S. law firm WilmerHale into the events leading up to OpenAI CEO Sam Altman's ouster.

Sam Altman will also rejoin OpenAI's board.

The new board members are:

The three new members will "work closely with current board members Adam D'Angelo, Larry Summers and Bret Taylor as well as Greg, Sam, and OpenAI's senior management," according to a release.

OpenAI will continue to expand the board moving forward, according to a Zoom call with reporters.

OpenAI did not publish the investigation report but provided a summary of the findings.

"The review concluded there was a significant breakdown of trust between the prior board and Sam and Greg," Taylor said, adding that the review also "concluded the board acted in good faith... [and] did not anticipate some of the instability that led afterwards."

Taylor also said the board's concerns did not arise regarding concerns over product safety and security, OpenAI's finances or statements to customers or business partners, that it was "simply a breakdown in trust between the board and Mr. Altman."

WilmerHale's investigation began in December, and the lawyers submitted their report today, which included dozens of interviews with OpenAI's prior board members and advisors, current executives and other witnesses. The investigation also involved reviewing more than 30,000 documents, according to a release.

"We have unanimously concluded that Sam and Greg are the right leaders for OpenAI," Bret Taylor, chair of OpenAI's board, said in a release.

"I am very grateful to Bret and Larry and WilmerHale," Altman said on the Zoom call with reporters. He added, speaking of CTO Mira Murati, "Mira in particular is