Nikita Bier has stepped down as head of product at X after a little more than a year in the role. Bier joined X as product lead in July 2025 after building and selling several consumer social apps and later becoming a partner at Lightspeed Venture Partners. X is, and will remain, the most… pic.twitter.com/hHpnY30L6c — Nikita Bier (@nikitabier) August 5, 2026X has not publicly named a replacement for Bier. His departure comes after a period of frequent product changes, including a rebuilt Android app and changes to community features and moderation systems. His exit leaves X without the product leader who had overseen much of its recent consumer-facing development.