YC Summer 2026 (S26) founder

Ryan Nowicki Stewart

Founder of Pennant, The World Model for Corporate Governance

Company

Ryan Nowicki Stewart is listed as a founder of Pennant. Led by former institutional proxy voters and technologists with a collective 20+ years of experience, Pennant gives institutional investors, public companies, and corporate advisors voting and governance intelligence to act on their own principles at scale.

Founder traction evidence

Public posts and activity attributed directly to this founder.

  1. X

    Our team at @pennant_ai is building the Corporate Governance OS for the next age of public markets.

    Our team at @pennant_ai is building the Corporate Governance OS for the next age of public markets. We're proud and incredibly excited to be launching with @ycombinator today. We know this market and the pain points we are solving for firsthand, and we are thrilled to be

  2. X

    “Well another dispensary is moving in” - Our Dogpatch neighbor who is about to get quite the surprise.

    “Well another dispensary is moving in” - Our Dogpatch neighbor who is about to get quite the surprise. @UseCorgi

  3. X

    Join us in SF today for the CorpGov Tech Summit, co-hosted by @pennant_ai with the @Society4CorpGov and a big thank you to @WorkOS for our wonderful space.

    Join us in SF today for the CorpGov Tech Summit, co-hosted by @pennant_ai with the @Society4CorpGov and a big thank you to @WorkOS for our wonderful space. Come hear from startup legend and governance voices including @ericries and @evanepstein and leading industry players

  4. X

    Special moment for us at @pennant_ai among many from our @ycombinator summer.

    Special moment for us at @pennant_ai among many from our @ycombinator summer. Truly unique experience to be able to bring these groups together and look forward to making this an annual (maybe more often? lots of requests to take this on the road to other cities) tradition as I

  5. X

    Cohort 002 was a game-changing and perspective-shaping experience for me in building @pennant_ai.

    Cohort 002 was a game-changing and perspective-shaping experience for me in building @pennant_ai. If you want to build with people doing category-defining things at the cutting edge, this is for you. Oh, and learning on-site from world-class FDEs and product leaders is pretty

  6. X

    Saturday nights at Hogpatch.

    Saturday nights at Hogpatch. New magnet appeared in the call booth. Thank you @posthog

  7. X

    Super proud for @pennant_ai AI to be featured on this @ycombinator list and thrilled to be heading towards Demo Day S26.

    Nuff said. Super proud for @pennant_ai AI to be featured on this @ycombinator list and thrilled to be heading towards Demo Day S26. If you'll be here as an investor, industry operator (or both), let's talk! P.S. also featured among YC companies in NYC, where we will be back