Perunovich accounted for an even-strength assist, two PIM, one shot on goal, three blocked shots and a plus-2 rating in 24:39 of ice time in Saturday's 6-3 loss to Minnesota.
Perunovich notched an assist, two shots on goal and a plus-2 rating in Tuesday's 5-2 win over the Avalanche.
Perunovich was brought in via trade by the Islanders on Monday from the Blues in exchange for a 2026 conditional fifth-round pick.
Perunovich scored a goal in Tuesday's 4-2 loss to the Wild.
Perunovich scored a goal in Saturday's 8-1 loss to the Capitals.
Perunovich signed a one-year, $1.15 million contract with St. Louis on Tuesday.
Perunovich (lower body) has been activated from injured reserve ahead of Thursday's game versus the Islanders, per Lou Korac of NHL.com.
Perunovich (lower body) is expected to be a game-time decision for Thursday's game against the Islanders, per Lou Korac of NHL.com on Wednesday.
Perunovich (lower body) was put on injured reserve Tuesday.
Perunovich (lower body) has been labeled week-to-week by coach Drew Bannister on Thursday, Matthew DeFranks of the St. Louis Post-Dispatch reports.