Venture studioFresno, California

We grow companies from the root.

Rootstock Studio is where ideas get built. When they're ready for the world, they're grafted off into companies of their own.

See what's plantedWrite to us

Fig. 1A graft union. The scion is the venture. The rootstock is the studio, and it stays in the ground.36.74° N 119.79° W

01 / The model

Plant, graft, ship.

  1. Fig. 2a

    Plant.

    An idea starts here, inside the studio, with shared tools, people, and infrastructure.

  2. Fig. 2b

    Graft.

    When it shows real growth, it gets its own identity and structure.

  3. Fig. 2c

    Ship.

    It spins off as an independent company. The roots stay. The studio plants the next one.

02 / Scions

Everything we've planted.

A scion is the cutting grafted onto a rootstock. Here it means a venture.

3 planted · 2 growing

  1. 001

    StratifyIQ

    AI-first endpoint operations.

    GROWING

    Planted 2025

  2. 002

    Something's in the ground.

    IN THE GROUND

    Planted 2026

  3. 003

    Pennant Clubs

    The club office your volunteers can actually run.

    GROWING

    Planted 2026

Stages, in order: in the groundgrowinggraftedshipped

03 / About

Nobody buys the rootstock, but it's why the tree is still standing in August.

Dan Donathan
Dan Donathan · Founder

Rootstock Studio is the Fresno holding company of Dan Donathan, who runs Bellwether IT and co-founded Tonic HQ.

Central Valley growers choose a rootstock for the ground it has to survive in, then graft the fruit on top. The studio works the same way: the roots are shared, and each venture grows on its own.

04 / Contact

Write to us.

Partners, vendors, and anyone with a good idea. Messages go straight to Dan, and replies come by email.