Winthrop- Capt. John M. Kaiser Sr. (Jack) of Winthrop, Maine, passed away on October 5, 2026. He was born on July 21, 1940, and was originally from Ramsey, New Jersey.

Jack proudly served his country in the United States Navy for many years as a pilot and Captain. His military career took him and his family to many places around the world, providing a lifetime of adventure and experiences. He retired from the Navy in 1989 and moved to Maine permanently, where he continued to work and was an active member of his community.

Jack was preceded in death by his beloved wife, Caro Jane Kaiser, who passed away just three weeks before him. Their family finds comfort in knowing that they are together again.

He was also predeceased by his parents, George and Edith Kaiser.

Jack is survived by his son, John M. Kaiser Jr. and his wife, Rhonda; his daughter, Jane C. Grant and her husband, Steve; his grandchildren, Kayla Kaiser (Keenan) and Lauren Souza (Kameron); his great-grandchildren, Laina and Kaleb; and his brother, Walter Kaiser.

Jack will be remembered for his years of service to his country, the life he built with his beloved wife, and the family he leaves behind.

A service will be held on Monday, October 19, 2026, at 2:00 p.m. at the Maine Veterans’ Memorial Cemetery located at 143 Blue Star Avenue (off of Civic Center Drive) in Augusta, Maine. Arrangements and guidance are under the direction of Roberts Funeral Home, 62 Bowdoin Street, Winthrop, ME.

In lieu of flowers, donations, in Jack’s memory, may be made to the Alzheimer’s Association.