Atlanta Falcons Landman signed with the
Atlanta Falcons as an undrafted free agent on 2 May 2022. He made the Falcons' initial 53-man roster out of training camp. He was released on 10 December 2022, and re-signed to the
practice squad. As a rookie, he appeared in seven games in the 2022 season. Landman signed a reserve/future contract with the Falcons on 9 January 2023. In the 2023 season, he appeared in 16 games and made 14 starts. He finished with two sacks, 110 total tackles (66 solo), one interception, three passes defended, and three forced fumbles. On 16 September 2024, Landman was placed on injured reserve. On 12 October, Landman came off injured reserve and was activated to the 53-man roster.
Los Angeles Rams On 18 March 2025, Landman signed a one-year contract with the
Los Angeles Rams. He was named a starting inside linebacker to begin the season. In Week 1 against the
Houston Texans, he forced a fumble, had 10 tackles, and earned NFC Defensive Player of the Week honors. On 22 November 2025, Landman signed a three-year, $22.5 million contract extension with the Rams. ==NFL career statistics==