Arpeggio Bio
YC S19Boulder, US · Founded 2018 · Delaware corporation · 20 employees · 8 known investors
Arpeggio Bio develops pharmaceutical drugs that target transcription factors using artificial intelligence and RNA-sequencing technology, with lead programs in development for melanoma treatment and rare disease applications.
Also known as Arpeggio Biosciences
Founders & leadership· Y Combinator alumni (S19)
Arpeggio Bio was founded in 2018 by Joey Azofeifa and Joseph G. Azofeifa.
JA
JG
Joseph G. AzofeifaCo-founder
LN
Laura NorrisExecutive
TR
Timothy ReadExecutive
EM
Eric MartinExecutive
Board
AM
Amit MehtaBoard director
Investors · 8
Fifty YearsSan Francisco · $250K – $2M
FundersClubSan Francisco · $250K – $5M
Tau VenturesPalo Alto · $500K
venBio PartnersSan Francisco
Y CombinatorSan Francisco · $500K
BoxOne VenturesreportedMontréal · $500K
venBio Global StrategicreportedSan Francisco
Westlake Village BioPartnersreportedLos Angeles · $100K – $5Mvia David Allison · board
Reported raises · per SEC filings
Form D private placements$46.4M disclosed across 5 rounds · 2019–2025
▶$20MraisedNov 2025 · 12 investors · Other TechnologyRule 506(b)
▶$20MraisedNov 2025 · 12 investors · Other Technology
Rule 506(b)Officers, directors & promoters on the filing
- Timothy ReadExecutive Officer
- Laura NorrisExecutive Officer
- David AllisonDirector
- Joseph G. AzofeifaExecutive Officer, Director
- Mira ChaurushiyaDirector
- Samuel KintzDirector
- Aaron RoystonDirector
- Offering amount
- $35.3M
- Amount sold
- $20M
- First sale
- Nov 2025
- Incorporated
- Corporation, Delaware
- Federal exemptions
- 06b
▶$4MraisedMar 2025 · 14 investors · Other TechnologyRule 506(b)
▶$4MraisedMar 2025 · 14 investors · Other Technology
Rule 506(b)Officers, directors & promoters on the filing
- Amit MehtaDirector
- Timothy ReadExecutive Officer, Director
- Laura NorrisExecutive Officer, Director
- Joseph G. AzofeifaExecutive Officer, Director
- Offering amount
- $4.6M
- Amount sold
- $4M
- First sale
- Mar 2025
- Incorporated
- Corporation, Delaware
- Federal exemptions
- 06b
▶$20.2MraisedSep 2022 · 28 investors · Other TechnologyRule 506(b)
▶$20.2MraisedSep 2022 · 28 investors · Other Technology
Rule 506(b)Officers, directors & promoters on the filing
- Amit MehtaDirector
- Laura NorrisExecutive Officer, Director
- Joseph G. AzofeifaExecutive Officer, Director
- Timothy ReadExecutive Officer, Director
- Eric MartinExecutive Officer
- Offering amount
- $20.3M
- Amount sold
- $20.2M
- First sale
- Aug 2022
- Incorporated
- Corporation, Delaware, 2017
- Federal exemptions
- 06b
▶$2MraisedSep 2019 · 5 investors · Other TechnologyRule 506(b)
▶$2MraisedSep 2019 · 5 investors · Other Technology
Rule 506(b)Officers, directors & promoters on the filing
- Joseph G. AzofeifaExecutive Officer, Director, Promoter
- Timothy ReadDirector, Promoter
- Joe McMahonDirector
- Daniel WeaverPromoter
- Robin D. Dowell-DeenPromoter
- Laura NorrisExecutive Officer
- Offering amount
- $3M
- Amount sold
- $2M
- First sale
- Aug 2019
- Incorporated
- Corporation, Colorado, 2017
- Federal exemptions
- 06b
▶$125KraisedAug 2019 · 1 investors · Other TechnologyRule 506(b)
▶$125KraisedAug 2019 · 1 investors · Other Technology
Rule 506(b)Officers, directors & promoters on the filing
- Laura NorrisExecutive Officer
- Robin D. Dowell-DeenPromoter
- Daniel WeaverPromoter
- Timothy ReadDirector, Promoter
- Joseph G. AzofeifaExecutive Officer, Director, Promoter
- Joe McMahonDirector
- Offering amount
- $500K
- Amount sold
- $125K
- First sale
- Aug 2019
- Incorporated
- Corporation, Colorado, 2017
- Federal exemptions
- 06b
Source: SEC EDGAR Form D. Amounts as filed; amended filings shown once at their latest values.
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In the news
Frequently asked questions
- What does Arpeggio Bio do?
- Arpeggio Bio develops pharmaceutical drugs that target transcription factors using artificial intelligence and RNA-sequencing technology, with lead programs in development for melanoma treatment and rare disease applications.
- Who founded Arpeggio Bio?
- Arpeggio Bio was founded by Joey Azofeifa, Joseph G. Azofeifa in 2018.
- Who are Arpeggio Bio's investors?
- Arpeggio Bio's investors include Fifty Years, FundersClub, Tau Ventures, venBio Partners, Y Combinator, BoxOne Ventures, venBio Global Strategic, Westlake Village BioPartners.
- How much funding has Arpeggio Bio raised?
- Arpeggio Bio has disclosed $46.4M raised across 5 rounds.
- Where is Arpeggio Bio headquartered?
- Arpeggio Bio is headquartered in Boulder, US.