Loyal
Loyal is a clinical-stage veterinary medicine company developing drugs to extend the lifespan and healthspan of dogs. It has raised $237M in funding and employs 211 people.
The growth story
Loyal grew from 57 to 212 employees between 2023 and 2026, raising $237M along the way, most recently a Series C in February 2026.
About
Loyal develops veterinary drugs aimed at increasing the lifespan and healthspan of dogs, targeting FDA approval for what would be the first lifespan extension drug for any species. Its team includes scientists, veterinarians, engineers, and operators.
The company has raised $237M, including a Series C round in February 2026, and employs 211 people. Its funding and headcount suggest significant growth since its founding in 2020.
Founders and leadership
Loyal's largest function is Research, with 12 employees. The company is led by a team that includes scientists, veterinarians, engineers, and operators, reflecting its focus on drug development and clinical-stage research.
The Loyal org chart
Celine Halioua (Founder & CEO) leads 37 mapped leaders with 6 direct reports. Click +N to expand a team; names link to the person’s public profile.
Departments, and which ones grew
Headcount by function: Operations 36 (+38% YoY), Research 20 (+5% YoY), Military and Protective Services 15 (+67% YoY), Business Development 14 (+17% YoY), Administrative 10 (+11% YoY), Engineering 9 (+29% YoY).
Talent flow
Loyal's employees come from companies like Coherus Oncology, MAP Pharmaceuticals, and Alcami, indicating a strong background in pharmaceuticals and biotechnology. Alumni have moved to diverse roles at companies such as Salesforce, TikTok, and The Browser Company.
Most common previous employers of Loyal staff: Coherus Oncology (3), MAP Pharmaceuticals (3), Alcami (3), CODA Biotherapeutics (3), Mayne Pharma (3), Merck (2). Former Loyal employees most often moved to Salesforce (1), HT VET (1), Nium (1), TikTok (1), Twelve Below (1), The Browser Company (1).
Alumni worth knowing
The Loyal mafia
Loyal alumni have founded six companies, including Olio Labs, Precepi, and Vyona Health, with Olio Labs employing 12 people, the largest among them.
6Tom Roseberry, was Advisor until 2022Tom Hwang, was Vice President, Business Operations & Chief of Staff, CEO until 2024Elly Shin, was Scientist (Aging Biology) until 2022Stacy Ross, was Vice President CMC until 2024Julie Vaughn, was Data Scientist until 2023Grant Getzelman, was Machine Learning Scientist until 2022Web traffic
Traffic mix: 41% direct, 45% search, 0% social, 0% paid.
What this company is made of
Most common skills at Loyal: Leadership (29), Microsoft Office (21), Customer Service (21), Communication (21), Project Management (19), Research Skills (18), Management (17), Public Speaking (17).
Where the team actually sits
Loyal people are concentrated in California, United States (9), San Francisco Bay Area (9), United States (6), North Carolina, United States (4).
Search footprint
Loyal attracts about 1,185 organic search visits a month, traffic worth roughly $7K a month if bought through ads. It gained 328 ranking keywords and lost 204 in the last period.
Frequently asked
Loyal has 211 employees as of September 2026.
Loyal has raised $237M in total, most recently a Series C round in February 2026.
Loyal was founded in 2020 by Celine Halioua.
Celine Halioua (Founder & CEO) sits at the top of Loyal's reporting structure, with 6 direct reports.
The most common previous employers of current Loyal staff are Coherus Oncology (3 people), MAP Pharmaceuticals (3 people), Alcami (3 people).
Former Loyal employees most often move to Salesforce (1), HT VET (1), Nium (1).
At least 6 companies have a founder who previously worked at Loyal, including Olio Labs, Precepi, Shin Capital.
Loyal attracts about 1,185 organic search visits a month, worth roughly $7K a month in equivalent ad spend.
The most common skills among Loyal staff are Leadership, Microsoft Office, Customer Service, Communication, Project Management.
Loyal staff are concentrated in California, United States (9), San Francisco Bay Area (9), United States (6).
Loyal has about 36 people in Operations, up 38% over the past year, as of September 2026.
Loyal has about 20 people in Research, up 5% over the past year, as of September 2026.
Computed from 61 current and 89 former Loyal profiles, as of September 2026. Source: Crustdata.
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