In a new regulatory filing, Berkshire said its board of directors voted on Sept. 30 to amend its bylaws to distinguish the two top roles, effective immediately.

Buffett wasn’t mentioned in materials on the deal, potentially signaling a passing of the torch to Vice Chair Greg Abel, who will become CEO in January.

In a new regulatory filing, Berkshire said its board of directors voted on Sept. 30 to amend its bylaws to distinguish the two top roles, effective immediately.