Kolleen Ann (Ackerman) Hollister, of Elmira, NY passed away unexpectedly on Tuesday, August 15, 2017 at home. She is survived by her loving family: husband, Larry; daughter, Jenna; father, Jack (Diane) Ackerman; mother, Kay Ackerman; brother James (Cindy), mother-in-law Mary Ellen Christman, along with several aunts, uncles, and cousins. At Kolleen’s request, there will be no calling hours. A memorial service will be held on Monday, August 21, 2017 at 1 PM at the Jenkins Cemetery, located behind Bradley Farms in Elmira, NY. Kolleen’s tribute wall may be signed at www.olthof.com.