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

Yin Wu

Yin Wu is the founder and CEO of Pulley in Yin Wu on Pulley, Equity, and Founder Resilience. The episode traces her path from Kentucky to Stanford University, BASES, and Startup School, where she helped Y Combinator host a large event at Stanford and first came onto Jessica Livingston’s radar.

Yin went through YC multiple times: a Summer 2011 startup that pivoted from video advertising into disappearing messages and then Prim, a Summer 2013 restart around Echo Locker, and Winter 2020 with Pulley. Her story turns repeated pivots into operating judgment: she learned that technical ability, low personal burn, and willingness to do unglamorous work matter, but so does genuine obsession with the user.

Pulley is the mature version of that lesson. Yin chose founders as the customer because she wanted to serve people building hard things, then translated founder confusion around ownership, fundraising, cap tables, offer letters, board control, and equity communication into product scope.

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