Mark Wallengren Afternoon Radio Personality, KOST 103.5FM iHeart Media


Raised in an entertainment family it’s no surprise that Mark has found himself in radio. Since Mark’s been at KOST 103.5 he’s won almost every personality award bestowed by the industry including Billboard Magazine’s Personality of the Year and Radio, Records Major Market Personality of the Year and has a star on the Hollywood Walk Of Fame. In addition, since Mark’s arrival, KOST 103.5 received the radio industry’s highest honor, The Marconi Award for Station of the Year.

He’s as comfortable having a conversation with guests like actors Amy Adams, Meryl Streep or Jeremy Renner, musical greats Gwen Stefani to Paul McCartney to everyday conversations with listeners he calls family. For the 34 years Mark has called KOST 103.5 home what you hear is what you get. His inside knowledge of the music business can be heard during his immensely popular Behind the Song segment Monday through Friday at 5:30pm. He is trusted and loved by listeners and their enduring relationship is a testament to the success of Mark and KOST 103.5.

Mark is a longtime Studio City resident and the extremely proud father of four who has been married to his beautiful wife Barbara for 29 years.

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