Age 81, passed away on Wednesday, January 30, 2019 at Bronson Hospital. He was born on September 3, 1937, the son of the late Elmer and Percis (Dykstra) Osmun. He was also preceded in passing by a sister, Joan (William) Dalman. He was a dedicated husband, father, grandfather and friend. He attended Kalamazoo College, graduated from Western Michigan University and received his MBA from Michigan State University. He would remain a loyal Spartan fan. He was a hard worker who retired as a Marketing Director from Upjohn International after 25 years. While there he received the W.E. Upjohn Award. When not working he stayed active and was an avid runner and tennis player. David also took great interest in history, was an avid reader and kept decades of personal journals. He traveled internationally and lived abroad for several years with his family. Above all David loved his family and leaves them with many wonderful memories of a life well lived. On November 11, 1967, he married the love of his life Joan Osmun who survives. He is also survived by three children, Gregory (Jodi) Osmun, Scott Osmun and Alison (Alex) Arteaga; five grandchildren, Gretchen and Carter Osmun, Brody, Hudson and Kennedy Arteaga; two nieces, Debra and Denise.