06/23/2025
Farewell, but not goodbye.
After 32 years with Keiser, Don Callahan is officially retiring, and if you’ve ever been in a room with Don, you know he never did anything quietly.
A triathlete from Wayland, Massachusetts, Don brought energy, passion, and volume to everything he touched from building lasting relationships to pushing our mission forward. For over three decades, he’s been more than a teammate, he’s been family.
Don, thank you for giving it everything you had (and then some). Enjoy this next chapter with your family, you’ve more than earned it.
The floors might be a little quieter now, but your presence will always be felt. Thank you, Don.
