John D. Groendyke: key obituary facts
Is John D. Groendyke dead? Yes. John D. Groendyke died on June 13, 2026, at age 81.
Cause of death: John D. Groendyke's cause of death has not been publicly confirmed.
What was John D. Groendyke known for?
He was known as American businessman.
More about John D. Groendyke
Gender: male.
Occupation: businessperson.
Nationality: United States.
Education: Wentworth Military Academy and College, University of Oklahoma, Oklahoma State University.
John D.
Groendyke, an American trucking executive and chief executive officer of Groendyke Transport, died on June 13, 2026. He led the Enid, Oklahoma-based company, which by 2015 was the fifth-largest bulk tank truck carrier serving the United States and Canada.
Groendyke graduated from Wentworth Military Academy in 1964, where he reached the rank of Brigade Commander, then earned a business degree from Oklahoma State University in 1966 and a Juris Doctor from the University of Oklahoma in 1969. He later served as a captain in the U.S. Army before returning to Enid.