Finnegan was born in St. Louis, Missouri to Don and Linabelle Finnegan. She has three sisters, Sarah, Hannah, and Jennah, who are all also gymnasts. She began gymnastics in 2005 and moved to Kansas City in 2008 to continue her gymnastics career.
Gymnastics career
Level 10
2016–2017
Finnegan was a Junior Olympic athlete and competed at the 2016 and 2017 J.O Nationals. In 2016 she placed 29th in the all-around and seventh on balance beam. In 2017 Finnegan won gold in the all-around for the junior-b division.
Junior Elite
2018
In 2018 Finnegan qualified to junior elite at Brestyan's National Qualifier. She made her elite debut at the American Classic in July where she finished sixth in the all-around but won bronze on the balance beam. Later that month she competed at the 2018 U.S. Classic where she placed seventh in the all-around. In August Finnegan competed at her first National Championships where she placed fourteenth in the all-around, fourth on vault, eighteenth on uneven bars and balance beam, and fifteenth on floor exercise.
Senior Elite
2019
Finnegan turned senior in 2019. In February she was named to the team to compete at the 2019 International Gymnix in Montreal alongside Alyona Shchennikova, Sloane Blakely, and GAGE teammate Kara Eaker. While there she won gold in the team final and on vault; she received the fifth highest score in the all-around but did not place due to teammates Eaker and Shchennikova placing higher. In June, after the conclusion of the American Classic, Finnegan was named as one of the eight athletes being considered for the team to compete at the 2019 Pan American Games along with Sloane Blakely, Kara Eaker, Morgan Hurd, Shilese Jones, Sunisa Lee, Riley McCusker, and Leanne Wong. At the 2019 GK US Classic, Finnegan placed seventh in the all-around. She also placed second on vault behind Jade Carey, twelfth on uneven bars, tenth on balance beam, and seventh on floor exercise. After the competition she was named to the team to compete at the Pan American Games alongside Eaker, Hurd, McCusker, and Wong. At the Pan American Games Finnegan competed on vault and floor, with both her scores contributing towards the USA's gold medal winning performance. Individually, Finnegan qualified to the vault final in fourth, behind Ellie Black of Canada, Yesenia Ferrera of Cuba, and Martina Dominici of Argentina. She also posted the fourth highest floor exercise score in the competition, but because teammates McCusker and Eaker scored higher than her, she was unable to compete in the final due to the two-per-country rule. On the first day of event finals it was announced that Finnegan had withdrawn from the vault final due to injury. At nationals, Finnegan finished thirteenth in the all-around. She also placed fourth on vault, thirteenth on bars, fifteenth on beam, and sixth on floor. She was not named to the national team, but it was announced that she would receive an invite to the Worlds selection camp due to her participation on the Pan American team. Finnegan competed at the U.S. World Championship trials on only balance beam, receiving a score of 13.200, finishing eleventh on the event. She was not named to the World Championship team after the trials.
