[4] He was reassigned to Columbus' American Hockey League (AHL) affiliate, the Springfield Falcons, after playing in seven NHL games, as defenceman Ryan Murray was activated off injured reserve.

[13] In a fresh start with the Panthers, in which the pandemic delayed and shortened the 2020–21 season, Wennberg responded with a career high 17 goals in 56 games, and added 12 assists while relied upon to provide responsible two-way play.

[citation needed] As a free agent from the Panthers, Wennberg was targeted and signed to a three-year, $13.5 million contract with the expansion club, the Seattle Kraken, on 28 July 2021.

[17] In the 2024 offseason, Wennberg left the Rangers as a free agent and signed a two-year, $10 million contract with the San Jose Sharks.

[18] Wennberg and his partner, Felicia Weeren, became parents in September 2021 when she gave birth to their son, Rio, whose name was inspired in large part by a character in the television series Money Heist.

"[21] The Kraken began producing and releasing their own TikTok videos which were marketed to BookTok users and intended to capitalize on his good looks.

Wennberg's partner, Felicia, described the attention as objectifying and having "crossed the line of what it means to fancy someone" into the realm of being "predatory and exploiting."

When her comments received backlash, Wennberg took to social media to echo the sentiment, writing "aggressive language about real life players is too much" and asking for "a little respect."