Former Groendyke CEO John Groendyke dies at 81
John Groendyke became president and CEO of the Oklahoma-based company following the death of his father, Harold, who founded the carrier in 1932. (Groendyke Transport) June 25, 2026 3:47 pm, EDT key takeaways: John Groendyke, former chairman and CEO of Groendyke Transportation and former chairman of NTTC, died on June 13 at the age of