Sherman's fine was confirmed by the league Friday.
Sherman was flagged after he made a choking gesture toward the San Francisco bench that he said was directed at quarterback Colin Kaepernick. Sherman had just deflected a pass intended for Michael Crabtree in the end zone that was intercepted by linebacker Malcolm Smith and clinched Seattle's 23-17 victory.
Sherman ran over and after tapping Crabtree on the backside and extended his hand for a handshake. Crabtree then shoved Sherman in the face. The All-Pro cornerback then made the choking gesture.
Sherman was the only player fined in the game.
AP NFL website: http://www.pro32.ap.org