Jennie Immethun

College career

Loyola Marymount Lions Immethun began matriculating at Loyola Marymount University after graduating. She spent one season with the Lions soccer team, appearing in all 17 of Loyola Marymount's matches and starting in all but two. As a sophomore with the TCU Horned Frogs later in 2023, Immethun started in 10 of TCU's 15 matches.

Immethun found even more success the following year, earning All Big-12 second team honors after lifting the Horned Frogs to a Big 12 Conference regular season title. She had played the entire 90 minutes of 11 matches and had helped contribute to 7 shutouts on the year. She continued to post positive performances for the Bruins and earned a place on the Mac Hermann Trophy midseason watchlist in October 2025. Immethun went on to start every match of the season and lead the team in minutes played, staying on the pitch for the entirety of all of UCLA's matches except for one. She worked with the rest of the Bruins' defensive unit to allow only 10 goals on the year and record the second-best goals against average across the nation.

Club career

Portland Thorns National Women's Soccer League (NWSL) club Portland Thorns FC invited Immethun to the team's preseason roster as a trialist ahead of the 2026 season. Immethun was called on to play minutes in the Thorns' preseason matches, both in the Coachella Valley Invitational and in a friendly against Liga MX Femenil club Monterrey. In March 2026, she signed her first professional contract with the Thorns, inking a short-term deal until the end of May 2026. She made her pro debut on May 20, coming on as a second-half substitute for Cassandra Bogere in a 2–0 victory over Bay FC. On June 9, 2026, the Thorns announced that Immethun's contract had been extended two additional months, now lasting through July. Immethun made 4 appearances (2 starts) before departing from Portland at the end of her contract.

Angel City On July 31, 2026, Immethun signed for Angel City FC on a short-term roster relief deal lasting through September 6.

Honors and awards TCU Horned Frogs

Big 12 Conference: 2024

Individual

Second-team All-American: 2025 First-team All-Big Ten: 2025 Second-team All-Big 12: 2024