The Rams signed Johnson to the 53-man roster Tuesday.
Johnson joined the Rams' practice squad Aug. 30 after failing to make the initial 53-man roster ahead of the deadline. His sole elevation came in Week 15 against the Commanders, but he was inactive for the game. Johnson last suited up in 2022 with the Texans, for whom he played 28 offensive snaps over two games without recording a stat.