Hellberg was traded to the Panthers by the Penguins on Friday in a swap for Ludovic Waeber and a 2025 seventh-round pick.
Hellberg was reassigned to AHL Wilkes-Barre/Scranton on Thursday.
Hellberg was reassigned to AHL Wilkes-Barre/Scranton on Sunday.
Hellberg will defend the visiting crease in LA on Thursday, per Penguins play-by-play announcer Josh Getzoff.
Hellberg was called up from AHL Wilkes-Barre/Scranton on Wednesday.
Hellberg was waived by the Penguins on Sunday, Chris Johnston of TSN reports.
Hellberg signed a one-year contract with Pittsburgh on Sunday.
Hellberg turned aside 14 of 17 shots after replacing Ville Husso midway through the first period of Monday's 6-1 loss to Dallas.
Hellberg stopped 23 shots in Friday's 6-2 loss to Winnipeg.
Hellberg will be between the home pipes versus St. Louis on Thursday, Max Bultman of The Athletic reports.