Founders backed by Jon Callaghan in San Francisco, CA (2026)

7 founders backed by Jon Callaghan in San Francisco, CA, with company, funding, and investor detail. Includes Ditto and howie.

Founders backed by Jon Callaghan in San Francisco, CA (7)

Founders backed by Jon Callaghan in San Francisco, CA covers 7 founders on Ditto, Gridware and howie and 4 other companies. The most common sectors are AI Infrastructure (2), Developer Tools (2) and SaaS (2). The remaining members span Climate (1). Companies represented include Nixtla, Rork, Simple AI and Team-GPT. Every founder below links to a profile with their company, backers, and the filings behind each round.

Founders listed: 7
Companies represented: 7
Top sector: AI Infrastructure (2 founders)
Top location: San Francisco, CA (7 founders)
Sectors represented: 4

Adam Fish — Ditto
Austin Petersmith — howie
Catheryn Li — Simple AI
Daniel Dhawan — Rork
Katya Vaptsarova — Team-GPT
Max Canseco — Nixtla
Timothy Barat — Gridware

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