Moore had 140 tackles and 7 1/2 sacks in 26 games in two seasons with Oakland. Last season, he started all 11 games he played and had 90 tackles and three sacks.
''This has been more than a home to me... So much if my heart is in the bay... My teammates RaiderNation Yall are family to me. Will miss Yall,'' Moore tweeted.
The former Connecticut player was a third-round pick in 2013.