Michael Thomas Brennan Obituary

The family of Michael Thomas Brennan (Boulder, Colorado) announces his passing on July 16, 2026. Michael, born on January 29, 1952, is remembered by family, friends, and others who shared time and connection. You can send your sympathy in the guestbook provided and share it with the family.

Family, friends, and acquaintances remember Michael for his warmth, thoughtfulness, and the moments shared together. While he will be deeply missed, the influence he had on the lives around him remains. Loved ones will reflect on the time spent together. Michael’s memory will live on in the hearts of friends and family, a lasting reminder of the connections and experiences he brought to the world.

He is survived by: his daughters, Caitlin and Callie; his sons-in-law, Chase and Daniel; his granddaughter Grey (Diana); his siblings, Carol Brennan and Charlie Brennan; and his sister-in-law Erin Brennan.

In lieu of flowers, charitable contributions can be made to the National Audubon Society.