Josephine Kogler was born on April 25, 2003 in New York to Maria and Attila Kogler. She has a sister, Caroline and a dog named Bella. Currently, Josephine is an honor student at St. Anthony’s High School and she will graduate from high school in 2021. During Josephine's spare time, she enjoys playing with her dog, hanging out with her friends, listening to music and swimming.

Josephine used to climb on everything in sight, so her parents enrolled her into mommy and me class for fun when she was two years old. She fell in love with the sport and quickly progressed in the sport. As a level 7 gymnast in 2013, Josephine won the gold medal on vault at the State Championships. She moved up to level 8 for the 2014 season where she placed sixth on balance beam and floor exercise at the State Championships. Josephine was unable to compete most of the 2015 season due to an injury.

In 2016 as a level 9 gymnast, Josephine placed fifth in the all-around and first on vault at the State Championships. At the Region 6 Championships, she finished first in the all-around with a 37.250, first on balance beam and second on vault. She qualified to the Level 9 Eastern Nationals in Virginia Beach, VA. Josephine moved up to level 10 for the 2017 season. She placed fifth on balance beam and sixth on vault at the State Championships. At the Region 6 Championships, she finished eighth in the all-around, fourth on vault and fifth on floor exercise.

In the summer of 2017, Josephine moved to Infiniti Elite Gymnastics in Syosset, NY. She had a great season in 2018 where she won the vault title at the State Championships. At the Region 6 Championships, she finished fifth in the all-around, first on uneven bars and second on floor exercise. Josephine qualified to the Junior Olympic Nationals in Cincinnati, OH, finishing 18th in the all-around with a 37.600 and ninth on vault. In 2019, Josephine placed fifth in the all-around and second on vault at the Region 6 Championships. She qualified to the Junior Olympic Nationals in Indianapolis, IN, finishing 11th overall with a 37.950 and ninth on floor exercise.

Josephine trains 20 hours per week at Infiniti Elite Gymnastics in Syosset, NY under coach Tammy Marshall. She is working hard to qualify to the Junior Olympic Nationals again in 2020. Her long-term goal is to obtain a Division I college gymnastics scholarship.