Mark Warren Haesly Obituary

With heavy hearts, we announce the death of Mark Warren Haesly (Hastings, Minnesota), born in Winona, Minnesota, who passed away on March 1, 2026 at the age of 70. Family and friends are welcome to leave their condolences on this memorial page and share them with the family.

He was predeceased by: his grandmother Fae Kiekbush. He is survived by: his parents, Dr. Warren Haesly and Shirley Haesly; his wife Kathi Haesly; his children, Adam Haesly, Lindsay Fischer (Sam Bates) and Matthew Haesly (Elizabeth); his grandchildren, Warren, William, Adelaide, Ella and Emma; his pet Casper; and his sister Rachel.

Memorials may be directed to the Lymphoma Research Foundation (lymphoma.org), St. Jude Children's Research Hospital or the Hastings Animal Ark, in hopes that others may one day be spared the battle Mark fought with such grace and strength.The family wishes to extend a special thanks to Dr. Gita Thanarajasingam, Emily Brigham NP, Dr. Jacob Strand and oncology nurse Toby Hughes of the Mayo Clinic, Rochester.