The 49ers placed Collins (shoulder) on the active/PUP list Saturday, Matt Maiocco of NBC Sports Bay Area reports.
Collins picked up a shoulder injury earlier in the offseason and will now be sidelined until he's activated off the PUP list. The 2025 second-round pick is coming off a solid rookie campaign with 1.0 sacks, two forced fumbles and two fumble recoveries and is expected to serve as the team's starting nose tackle during the 2026 season.