3x founder

John Ramunas

CEO, Rejuvenation Technologies Inc., DigiTwin Bio

Co-founder

Rejuvenation Technologies Inc.· Summer 2018🇺🇸 Stanford, California, United States

in LinkedIn

2026Co-founder· DigiTwin Bio

Founder · since 1997

Company

DigiTwin Bio

Role

Co-founder, CEO

current

Stage

—

no public source

Raised

—

no public source

Based

California, United States

current

Founder / co-founder — the company's markEmployee / research role

Source: LinkedIn work history

Profile coverage5 of 7 · missing posts, contact

Rejuvenation Technologies Inc.

mRNA therapeutics to extend healthspan entering clinical trials

Summer 2018

Experience

Career

DigiTwin Bio
Co-founder
Co-founder, CEO · California, United States · 2026 – Present
2026
Rejuvenation Technologies Inc.
Co-founder
Co-Founder, CEO · Stanford CA · 2017 – Present
2017
Stanford University
Postdoc · 2014 – 2018
2014
University of Waterloo
Research Assistant · Waterloo, Canada · 2001 – 2006
2001
Pathways Development
Founder
Founder · Canada · 1997 – 1999
1997

Bio

John Ramunas, PhD, invented TERT mRNA telomere extension at Stanford in Helen Blau's lab — reversing a decade of telomere shortening in one treatment. 50+ granted patents across 7 families through 2046. Preclinical efficacy in 4 organ systems. FDA INTERACT cleared. Khosla Ventures seed. YC S18. Raising $10M seed extension ($2M wired) for 3 clinical trials — Phase I readout Q3 2027. Subject #1 in first human trial.