Calderón Counsel PLLC Outside General Counsel · MMXXVI

§ III. TESTIMONIALS — RECTO 3

Founder Voices,
Set in Type.

A small selection of founder letters and conversations Mateo has been authorized to share.

§ III.1 Helix Robotics

LETTER OF REFERENCE · PUBLIC USE AUTHORIZED
HELIX ROBOTICS, INC. San Francisco, CA · Series A · 22 employees

March 9, 2026

RE: Mateo Calderón — Outside General Counsel

Mateo walked us through our first enterprise MSA line by line. We went from feeling out-lawyered to feeling like adults. By the third matter he was flagging issues in our cap table faster than our finance team.

Aniket Bhatt Aniket Bhatt & Carolina Reyes Co-founders · Helix Robotics

§ III.2 Volta Power

LETTER OF REFERENCE · PUBLIC USE AUTHORIZED
VOLTA POWER, INC. Oakland, CA · Series Seed · 11 employees

February 17, 2026

RE: Calderón Counsel — first 90 days

The engagement letter Mateo wrote was the first time I’d ever read a legal contract and understood what I was buying. By month three, the IP assignment from our prior contractor was clean and our customer MSA template held up against an enterprise legal team.

Priya Ramaswami Priya Ramaswami Founder & CEO · Volta Power

§ III.3 Other engagements (anonymized)

  1. Series A SaaS — IP cleanup & first MSA § 3.3.1 CLOSED
  2. Seed deeptech — equity refresh & founder PIIA § 3.3.2 CLOSED
  3. Series B fintech — diligence binder § 3.3.3 ACTIVE

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