entity Updated 2026-07-11 Tags: Person, Founder, Startups

Antoine Hersen

Antoine Hersen is a PlanGrid co-founder discussed in Tracy Young on PlanGrid, TigerEye, and Building a Company Deliberately. Tracy Young says Antoine was diagnosed with a rare cancer at 27 and kept programming until his last days while the team lived and worked together in a Sunnyvale hacker house.

His role in the wiki is part of PlanGrid’s emotional foundation. The source does not treat grief as separate from startup operation: the team kept doing demos, fixing bugs, and fundraising while mourning, and Young says continuing for Antoine motivated the earliest phase of PlanGrid.

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