| Karen Stack Umlauf | |
| League: | NBA |
| Nationality: | American |
| College: |
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| Coach Start: | 2018 |
| Cyears1: | – |
| Cteam1: | Chicago Bulls (assistant) |
Karen Stack Umlauf is a former executive and assistant coach of the National Basketball Association's Chicago Bulls.
Stack Umlauf was a standout basketball player for the Northwestern Wildcats in the early 1980s.[1] After a year of playing basketball overseas, she joined the Bulls in 1985, starting with a role of selling tickets.[2] Over the next decades, she rose to become director of basketball operations for 20 years and later senior director of basketball administration.[3]
In 2017, she lobbied Bulls head of basketball operations John Paxson to let her coach. She was first assigned to the summer league.[4] In so doing, she became the Bulls' first female assistant coach, combining that role with the role of director of team operations.[5]
On October 12, 2020, the organization announced Stack Umlauf would not return to the coaching staff under newly-hired head coach Billy Donovan.[6]
Stack Umlauf is the sister of Jim Stack, a former scout and assistant general manager for the Bulls and later general manager of the Minnesota Timberwolves. She is also the aunt of NBA player Frank Kaminsky.[7]