The Giants signed LB Nathan Stupar on Tuesday, according to a photo tweeted out by his agent, Ed Wasielewski.
Stupar was released by the Saints earlier in the day.
Stupar spent the last two seasons with the Saints, totaling seven tackles, three sacks, and an interception in New Orleans' preseason finale this year. He was limited to four games last season due to an ACL injury, which he has since recovered from.
The 30-year-old played in all 16 games in 2015 and 2016 between the Falcons and Saints, and started a career-high six games in his 2016 campaign with the Saints.
Stupar has also spent time with the Falcons, 49ers, Jaguars, and Eagles.
To make room for the linebacker, the Giants waived RB Robert Martin.