Signed goaltender Joel Rumpel to a one-year, entry-level contract and assigned him to Worcester (AHL); signed defenseman Joakim Ryan to a two-year, standard entry-level contractand assigned him to Worcester.

Signed goaltender Aaron Dell for the remainder of the season.

Acquired defenseman Karl Stollery from the Colorado Avalanche in exchange for forward Freddie Hamilton; recalled forward Chris Tierney from Worcester (AHL).

Activated forward Tye McGinn from injured reserve; assigned forward Chris Tierney to Worcester (AHL).

Assigned forward Daniil Tarasov to Worcester (AHL).

Reassigned defenseman Matt Tennyson to Worcester (AHL).

Assigned defenseman Dylan DeMelo to Worcester (AHL); activated defenseman Marc-Edouard Vlasic from injured reserve.

Recalled forward Daniil Tarasov from Worcester (AHL).

Recalled forwards Tomas Hertl and Barclay Goodrow and defenseman Mirco Mueller from Worcester (AHL).

Reassigned defenseman Dylan DeMelo and forwards Tomas Hertl and Barclay Goodrow to Worcester (AHL).

Placed defenseman Justin Braun and forwrad Tommy Wingels on injured reserved; recalled defenseman Dylan DeMelo from Worcester (AHL); loaned defenseman Mirco Mueller to Worcester on a conditioning assignment.

Assigned forward Freddie Hamilton to Worcester (AHL).

Recalled forward Freddie Hamilton from Worcester (AHL).

Placed forward Joe Thornton on injured reserve; assigned forward Michael Haley to Worcester (AHL).