Keegan Rosenberger · Manhattan Beach, CA
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Keegan Rosenberger

Hi, I’m Keegan.

I’ve spent 20 years in finance, media and technology, building companies and working with creative people.

Investment banking first, then a Hollywood studio, then a company of my own, then another. The constant has been stories—the rights behind them, and how people experience them.

Now, my focus is Atticus—a consumer AI reading platform making books interactive, alongside the authors and publishers behind them.

About Me (in case you were wondering):

  • 2× founder (Atticus, Cavalry).
  • 3× girl dad.
  • AI native. Analog childhood.
  • Self-taught coder (shipped the Atticus MVP end-to-end).
  • Recovering investment banker.
  • NCAA College Hockey National Champion (St. Anselm, 2004).
  • Film, TV, and podcast producer (including Motorheads for Prime Video).
  • Avid Boston sports fan.
  • 5am workouts.
  • Lived in China for a bit (Ni hao).

Now

Atticus

I’m building Atticus so readers can have a conversation with a book—and authors and publishers share in the value.

The app is simple: read or listen, ask the book a question, and get an answer grounded in the licensed text and cited to the source. I started it in 2025 with my co-founder and best-selling author, Chase Jarvis; since then, a pre-seed round, a private beta, world-class authors, and the first licensing deals—structured so rightsholders are paid when readers talk to their books.

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Background

Companies & chapters

  1. Atticus

    2025–Present

    Founder & CEO

    The current chapter.

  2. New Summit Capital Advisors

    2025

    Venture Partner

    Advised Wanda on the €950M+ divestiture of Infront Sports & Media.

  3. Cavalry Media

    2018–2024

    Co-Founder & CEO

    Built a company spanning film, TV, talent management, and podcasts; raised $75M+ in equity and production financing. Executive producer of Motorheads (Prime Video) and 20+ podcasts. Named to Variety’s Hollywood’s New Leaders 40 Under 40 (2022).

  4. Relativity Media

    2012–2018

    Head of Strategy & Corporate Development

    Led $2B+ in capital raising, M&A and strategic transactions. The studio’s production and financing credits include 200 movies, $17B in worldwide box-office revenue and 60 Oscar nominations.

  5. UBS & NEBC

    2005–2011

    TMT banking, Analyst → VP

    $3B+ in M&A and financings for technology, media, and telecom companies.

A few favorites

What I’m Rewatching

Gladiator

Arguably my all-time favorite.

What I’m Listening To

All-In Podcast

Founders — David Senra

What I’m Reading

Shoe Dog — Phil Knight

The Beginning of Infinity — David Deutsch

Words to Live By

“Life is a succession of lessons which must be lived to be understood.”

— Ralph Waldo Emerson

Contact

Say hello.