Sierra Pfeifer, KOSU | Oklahoma City Free Press

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Home Authors Posts by Sierra Pfeifer, KOSU

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Sierra Pfeifer is a reporter covering mental health and addiction at KOSU. She joined KOSU in July 2024 as a corps member with Report for America, a GroundTruth initiative that places emerging journalists in newsrooms across the country.

Modern brick building with a grey panel facade and blue-yellow decorative panels; a sign on the brick wall reads Transformation Center, with glass windows and trees in front.

News

Poor defendants often blocked from OK County pretrial release program

Maddy Keyes, The Frontier and Sierra Pfeifer, KOSU - July 19, 2026 0

Person in a black shirt holds a smartphone to photograph printed papers being handed to them near a rusty metal door.

News

Oklahoma County bail hearings don’t meet constitutional standards, attorneys say

Maddy Keyes, The Frontier and Sierra Pfeifer, KOSU - July 14, 2026 0