On October 30, 2017, Brown was traded to the Seattle Seahawks for cornerback Jeremy Lane and two draft picks (a 2018 fifth round and a 2019 second round). However the following day it was reported Lane had failed his physical and would no longer be part of the trade; instead the Seahawks would send a third-rounder in 2018 (Martinas Rankin) and a second-rounder in 2019 in exchange for Brown and a 2018 fifth round pick. On January 23, 2018, Brown was named to the 2018 Pro Bowl, replacing Philadelphia Eagles tackle Lane Johnson.