3x founder

Lloyd Armbrust

YC W10 + S26. 3 exits. 6 kids. Built a $50M US manufacturing company. Now building @RonanRX, the Full-Stack Pharmaceutical Company for Personalized Peptides & GLP-1s. We manufacture and ship directly to patients.

Founder

RonanRx Inc.· Summer 2026 San Francisco Bay Area

in LinkedIn 𝕏 @larmbrust

2026CEO· RonanRX

Founder · since 2009

Company

RonanRX

Role

CEO

current

Stage

—

no public source

Raised

—

no public source

Based

San Francisco Bay Area

current

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

Source: LinkedIn work history

Profile coverage5 of 7 · missing posts, contact

RonanRx Inc.

We use AI to personalize peptides to your biology

Summer 2026

Experience

Career

RonanRX
CEO · San Francisco Bay Area · 2026 – Present
2026
Armbrust American
Founder
Founder, Board Member · Austin, Texas Metropolitan Area · 2020 – Present
2020
OwnLocal
Founder
Founder, Board Member · Austin, Texas Metropolitan Area · 2009 – Present
2009
American Medical Manufacturers Association (AMMA)
Founder
Founder · Washington DC-Baltimore Area · 2021 – 2023
2021

Bio

2x YC founder. 3 Exits. 6 Kids. Built a $50M manufacturing business. Now building RonanRX. We use AI to personalize peptides and GLP1s like Ozempic to your biology. By combining labs, wearables, medical history, treatment response, and the latest research, we continuously personalize your treatment as your body changes. Peptides are like Claude Code for your body. Your biology is the prompt. Oldest founder in S26, raising six kids outside Austin, Texas.