He played college lacrosse at Rutgers University where he was a two-time All-Big Ten selection and All-American (2018 Second Team, 2017 Honorable Mention).
His grandfather, Gus Sr., was a civil rights activist, while his grandmother, Jean, was the first Black teacher at Montclair High School.
During the 2020 off-season, the Redwoods used one of their protected roster spots to keep Heningburg from being selected in the Expansion Draft by the Waterdogs Lacrosse Club.
[10] Heningburg was promoted to the San Diego Seals active roster from the practice squad on February 8, 2019.
Heningburg was a staple of the Minneapolis Wheat Kings's run to third place in the IBLA Nationals Tournament in Huntington Beach, California.