The forward re-signed on a two-year, $1.8 million contract, the team announced on Saturday.
Trineyev, a fourth-round pick in 2020, will be on a two-way contract for the first year before moving to a one-way.
He’s appeared in his first two NHL games this season, debuting Dec. 13 against the Winnipeg Jets.
In 30 games with the AHL’s Hershey Bears, the six-foot-three Russian has recorded nine goals and 11 assists.
Over 157 career AHL games, Trineyev has 32 goals and 26 assists.