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The 31 Biotech & Pharma companies that produced the most founders (2026)

A founder factory is a company whose people leave to start companies of their own. This ranks every company in the graph by how many of its alumni — people who founded it or worked there — went on to found at least one company, counting only ventures started no earlier than the company itself.

Refreshed 2026-09-13 · updates nightly
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Founder factories · Biotech & PharmaAlumni who went on to found companiesEditas Medicine: 5 alumni founded 21 companiesEditas Medicine5Intellia Therapeutics: 4 alumni founded 7 companiesIntellia Therapeutics4Chroma Medicine: 4 alumni founded 6 companiesChroma Medicine4Beam Therapeutics: 3 alumni founded 8 companiesBeam Therapeutics3Proof Diagnostics: 3 alumni founded 6 companiesProof Diagnostics3GRAIL: 3 alumni founded 4 companiesGRAIL3Generate Biomedicines: 3 alumni founded 4 companiesGenerate Biomedicines3Again: 3 alumni founded 2 companiesAgain3Baseimmune: 3 alumni founded 1 companiesBaseimmune3Baseimmune Ltd.: 3 alumni founded 1 companiesBaseimmune Ltd.3Pendulum Therapeutics: 3 alumni founded 1 companiesPendulum Therapeutics3EnPlusOne Biosciences: 2 alumni founded 10 companiesEnPlusOne Biosciences2Empress Therapeutics: 2 alumni founded 7 companiesEmpress Therapeutics2Tessera Therapeutics: 2 alumni founded 7 companiesTessera Therapeutics2Xaira Therapeutics: 2 alumni founded 7 companiesXaira Therapeutics2
# Company SectorHQFounded Founders Companies started
1 Editas Medicine Biotech & Pharma — — 5 21
2 Intellia Therapeutics Biotech & Pharma — — 4 7
3 Chroma Medicine Biotech & Pharma — — 4 6
4 Beam Therapeutics Biotech & Pharma — — 3 8
5 Proof Diagnostics Biotech & Pharma — — 3 6
6 GRAIL Biotech & Pharma Menlo Park, USA 2016 3 4
7 Generate Biomedicines Biotech & Pharma — — 3 4
8 Again Biotech & Pharma — — 3 2
9 Baseimmune Biotech & Pharma — — 3 1
10 Baseimmune Ltd. Biotech & Pharma United Kingdom 2019 3 1
11 Pendulum Therapeutics Biotech & Pharma San Francisco, USA 2014 3 1
12 EnPlusOne Biosciences Biotech & Pharma — — 2 10
13 Empress Therapeutics Biotech & Pharma — — 2 7
14 Tessera Therapeutics Biotech & Pharma — — 2 7
15 Xaira Therapeutics Biotech & Pharma San Francisco, USA 2023 2 7
16 Merge Labs Biotech & Pharma — — 2 6
17 Moderna Biotech & Pharma Cambridge, USA 2010 2 6
18 Archon Biosciences Biotech & Pharma — — 2 5
19 Colossal Biosciences Biotech & Pharma Dallas, USA 2021 2 5
20 Vilya Biotech & Pharma — — 2 5
21 Genentech Biotech & Pharma United States 1976 2 4
22 Kernel Biotech & Pharma Los Angeles, United States 2016 2 4
23 Color Genomics Biotech & Pharma Burlingame, USA 2013 2 3
24 Curie.Bio Biotech & Pharma — — 2 3
25 Foundation Medicine Biotech & Pharma — — 2 3
26 Altos Labs Biotech & Pharma San Diego, USA 2021 2 2
27 Atomwise Biotech & Pharma San Francisco, USA 2012 2 2
28 InterVenn Biotech & Pharma — — 2 2
29 Zag Bio Biotech & Pharma — — 2 2
30 Enveda Biosciences Biotech & Pharma — — 2 1
31 Purposeful Biotech & Pharma — — 2 1
How this is counted. A person counts as an alumnus of a company if they founded it or worked there. They count towards the company’s score if they went on to found at least one other company that was started no earlier than the company itself. Universities and other non-commercial organisations are pruned from the graph where we can identify them. Data is community-corrected — fix something.