The company
Loyal.
Clinical-stage animal health company developing dog longevity drugs.
BiotechAnimal HealthLongevityVeterinary Medicine
Company links
Company links
01 - Company overview
Loyal at a glance.
StageSeries C
SectorBiotech, Animal Health, Longevity, Veterinary Medicine
LocationSan Francisco, CA
02 - The story
Clinical-stage animal health company developing dog longevity drugs.
Loyal is a clinical-stage animal health company developing drugs intended to help dogs live longer, healthier lives. Its work focuses on FDA-regulated veterinary medicine and aging biology.
03 - Traction
What is working.
Signal 01$100M Series C led by age1
Signal 02Baillie Gifford joined existing investors
Signal 03Over $250M total investment since founding
Signal 04Raised a $100M Series C announced on February 11, 2026.
Signal 05Reported full enrollment of the STAY study with more than 1,300 dogs across 70+ veterinary clinics.
Signal 06Publicly states it has completed two of the three major requirements needed for LOY-002’s FDA Expanded Conditional Approval: safety and efficacy acceptance.
04 - Product
What you will see.
Product 01LOY-002 program
Product 02Dog longevity trials
Product 03Veterinary education