# Arch's Biotech Investments: 18 Startups in Its Portfolio (2026) > The 18 Biotech startups Arch has backed, by stage: $3.5B raised between them. From the rounds we track; updated nightly. Source: https://millionrounds.com/portfolio-maps/arch-biotech-portfolio (Millionrounds; every figure on the page links to its filing or article) ## Series B 6 - [Gossamer Bio](https://millionrounds.com/company/gossamer-bio) - [*C* CStone](https://millionrounds.com/company/cstone) - [Beam Therapeutics](https://millionrounds.com/company/beam-therapeutics) - [*JB* Just Biotherapeutics](https://millionrounds.com/company/just-biotherapeutics) - [Omniome](https://millionrounds.com/company/omniome) - [*C* Cytrellis](https://millionrounds.com/company/cytrellis) ## Series C and later 6 - [LifeMine Therapeutics](https://millionrounds.com/company/lifemine-therapeutics) - [908 Devices](https://millionrounds.com/company/908-devices) - [KSQ Therapeutics](https://millionrounds.com/company/ksq-therapeutics) - [*C* Codiak](https://millionrounds.com/company/codiak) - [ImmusanT](https://millionrounds.com/company/immusant) - [OncoResponse](https://millionrounds.com/company/oncoresponse) ## Series A 4 - [Erasca](https://millionrounds.com/company/erasca) - [Verve Therapeutics](https://millionrounds.com/company/verve-therapeutics) - [*MN* Magnolia Neuroscience](https://millionrounds.com/company/magnolia-neuroscience) - [*B* Boragen](https://millionrounds.com/company/boragen) ## Stage not reported 2 - [*BB* Brii Bio](https://millionrounds.com/company/brii-bio) - [*RT* Rodeo Therapeutics](https://millionrounds.com/company/rodeo-therapeutics) ## Segment by segment ### Series B 6 startups · $1.5B raised - [**Gossamer Bio**](https://millionrounds.com/company/gossamer-bio) Gossamer Bio is a biopharmaceutical company focused on the discovery and development of novel and differentiated therapeutic products. United States $567M - [*C* **CStone**](https://millionrounds.com/company/cstone) China $410M - [**Beam Therapeutics**](https://millionrounds.com/company/beam-therapeutics) Beam Therapeutics is a biotechnology company developing precision genetic medicines through the use of base editing technology. United States $322M - [*JB* **Just Biotherapeutics**](https://millionrounds.com/company/just-biotherapeutics) China $64M - [**Omniome**](https://millionrounds.com/company/omniome) Omniome engages in developing a proprietary DNA sequencing platform capable of delivering unsurpassed sequencing accuracy. United States $60M - [*C* **Cytrellis**](https://millionrounds.com/company/cytrellis) United States $29M ### Series C and later 6 startups · $746M raised - [**LifeMine Therapeutics**](https://millionrounds.com/company/lifemine-therapeutics) LifeMine Therapeutics combines genomics with AI and synthetic biology to discover and develop a pipeline of novel medicines. United States $230M - [**908 Devices**](https://millionrounds.com/company/908-devices) 908devices manufactures battery-operated, hand-held chemical detection tools used in mass spectrometry. United States $168M - [**KSQ Therapeutics**](https://millionrounds.com/company/ksq-therapeutics) KSQ Therapeutics is using CRISPR technology within a powerful drug discovery engine to enable high-confidence drug development. United States $156M - [*C* **Codiak**](https://millionrounds.com/company/codiak) United States $77M - [**ImmusanT**](https://millionrounds.com/company/immusant) ImmusanT develops therapeutic vaccines for the treatment of celiac disease. United States $72M - [**OncoResponse**](https://millionrounds.com/company/oncoresponse) OncoResponse is an immuno-oncology biotech company developing cancer immunotherapies leveraging human immune system responses. United States $44M ### Series A 4 startups · $982M raised - [**Erasca**](https://millionrounds.com/company/erasca) Erasca is a developer of oncology drugs intended to provide precision oncology options. United States $739M - [**Verve Therapeutics**](https://millionrounds.com/company/verve-therapeutics) Verve Therapeutics is a genetic medicine firm that is developing treatments for cardiovascular disease. United States $202M - [*MN* **Magnolia Neuroscience**](https://millionrounds.com/company/magnolia-neuroscience) United States $31M - [*B* **Boragen**](https://millionrounds.com/company/boragen) United States $10M ### Stage not reported 2 startups · $275M raised - [*BB* **Brii Bio**](https://millionrounds.com/company/brii-bio) China $260M - [*RT* **Rodeo Therapeutics**](https://millionrounds.com/company/rodeo-therapeutics) Rodeo Therapeutics is a developer of small-molecule therapies designed to promote regeneration and repair of multiple tissue types. United States $15M **How this map is made.** Every startup here works in Biotech and has raised money in a round we track that names Arch as an investor. Each sits under the stage of its latest round. Rebuilt nightly; updated 15 November 2026. ## More portfolio maps [All portfolios](https://millionrounds.com/portfolio-maps) [Co-investors **Who invests with Arch** 30 co-investors](https://millionrounds.com/portfolio-maps/arch-co-investors)[Sector portfolio **Y Combinator's AI portfolio** 1,143 startups · $44B](https://millionrounds.com/portfolio-maps/y-combinator-ai-portfolio)[Sector portfolio **Y Combinator's Fintech portfolio** 338 startups · $24B](https://millionrounds.com/portfolio-maps/y-combinator-fintech-portfolio)[Sector portfolio **Techstars' AI portfolio** 336 startups · $4.9B](https://millionrounds.com/portfolio-maps/techstars-ai-portfolio)[Sector portfolio **Alumni Ventures' AI portfolio** 302 startups · $36B](https://millionrounds.com/portfolio-maps/us-strategic-tech-fund-an-alumni-ventures-fund-ai-portfolio)[Sector portfolio **Andreessen Horowitz's AI portfolio** 259 startups · $426B](https://millionrounds.com/portfolio-maps/andreessen-horowitz-ai-portfolio) ## Raising from investors like Arch? 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