Sima Sistani served as the director and Chief Executive Officer of WeightWatchers from 2022 to 2024. Previously, she worked at Epic Games, Inc., a video game and software developer and publisher, where she served as Chief Executive Officer of Houseparty, a face-to-face synchronous social network, and also was the senior executive leading social gameplay and feature development for Epic’s gaming products, including Fortnite.

Prior to Epic’s acquisition of Houseparty in June 2019, Sistani was the Chief Executive Officer at Houseparty and served on its Board of Directors, having been one of its original co-founders prior to its February 2016 launch. She previously led mobile growth operations at Yahoo! Inc., a technology company, from November 2011 to May 2015, and from the time Yahoo! acquired Tumblr she served as Tumblr’s first Head of Media. Prior to that time, Sistani held positions at Goldman Sachs and Creative Artists Agency. Sistani received a B.A. from Duke University and an M.B.A. from the Kellogg School of Management at Northwestern University.

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