Ohanian urged Reddit to replace him with a Black candidate during his announcement that he was stepping down from the board. His resignation came after former CEO Ellen Pao criticized the company for "amplifying" hate and several popular subreddits went dark to highlight inaction against racism.
The protests by the subreddits came after the police killing of George Floyd, whose death has sparked protests across the country against racism and police brutality.
Reddit CEO Steve Huffman pledged to honor Ohanian's request to fill his seat with a Black candidate. Huffman also said he would work with moderators on Reddit to change its content policy to address hate.
Seibel co-founded Justin.tv, which later became Twitch and Socialcam, a social video app. He also served as the finance director for former NAACP President Kwesi Mfume's Senate campaign in 2006.
"I want to thank Steve, Alexis, and the entire Reddit board for this opportunity," Seibel said in a statement. "I've known Steve and Alexis since 2007 and have been a Reddit user ever since. Over this period of time I've watched Reddit become part of the core fabric of the internet and I'm excited to help provide advice and guidance as Reddit continues to grow and tackle the challenges of bringing community and belonging to a broader audience."