Josh Griesemer is a Denver radio producer and on-air host whose career has developed within the Kroenke Sports & Entertainment radio group, first in sports radio and later at KIMN-FM (Mix 100).
From intern to morning host
Griesemer began in radio as a KSE intern after college and worked his way into production and on-air roles. His first years with the company included its sports-radio operation before he moved to Mix 100.
He became the producer for Mix 100’s morning show and joined Jeremy Padgett and Katy Mitchel on air when Jeremy, Katy & Josh in the Morning launched in October 2024. In September 2026, Mix 100 paired Griesemer with Nina Blanco to launch Denver’s Morning Show with Nina and Josh.
Colorado roots
Griesemer is a 2014 graduate of Valor Christian High School. An alumni profile described his path from station intern to Mix 100 on-air host.
Sources
- Mix 100: Josh profile
- Valor Christian: Josh Griesemer alumni story
- RAMP: Jeremy, Katy & Josh launch
- Mix 100: Denver’s Morning Show with Nina and Josh
Stations They Worked At
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