Katie Koster is known for Class Dismissed (2015), Dr. Penelope (2021) and Campy Spy Musical (2019).

Make your IMDb page stand out by adding a demo reel

The Biggest Movies and TV Coming in September

"The Gentlemen" and "Slow Horses" return this fall, while the "Reacher" spin-off series "Neagley" makes its debut. See our guide of the biggest Fall TV and streaming releases.

2026 Fall TV and Streaming Watch Guide

&quot;The Gentlemen&quot; and &quot;Slow Horses&quot; return this fall, while the &quot;Reacher&quot; spin-off series &quot;Neagley&quot; makes its debut. See our guide of the biggest Fall TV and streaming releases.

Get a closer look at these actors from their many TV and streaming series roles.

Streaming Stars, Then and Now

Julia Michelle, Sebastian Sage, and Katie Koster in Campy Spy Musical (2019)

Katie Koster

Photos10

Known for

Credits

Actress

Director

Writer

Verified affiliations

Videos3

Personal details

Self-verified on IMDbPro

Did you know

Contribute to this page

More to explore

Recently viewed