# Quaker Partners' Biotech Investments: 10 Startups in Its Portfolio (2026)

> The 10 Biotech startups Quaker Partners has backed, by stage: $707M raised between them. From the rounds we track; updated nightly.

Source: https://millionrounds.com/portfolio-maps/quaker-partners-biotech-portfolio (Millionrounds; every figure on the page links to its filing or article)

## Series B

4

- [Tarsa Therapeutics](https://millionrounds.com/company/tarsa-therapeutics)
- [*IV* Intact Vascular](https://millionrounds.com/company/intact-vascular)
- [*N* Nucleonics](https://millionrounds.com/company/nucleonics)
- [*S* StageMark](https://millionrounds.com/company/stagemark)

## Stage not reported

2

- [*RM* Rapid Micro](https://millionrounds.com/company/rapid-micro)
- [Vesper Medical](https://millionrounds.com/company/vesper-medical)

## Series C and later

2

- [*RB* Regado Biosciences](https://millionrounds.com/company/regado-biosciences)
- [Neuronetics](https://millionrounds.com/company/neuronetics)

## Series A

2

- [Optherion](https://millionrounds.com/company/optherion)
- [BioLeap](https://millionrounds.com/company/bioleap)

## Segment by segment

### Series B

4 startups · $277M raised

- [**Tarsa Therapeutics**](https://millionrounds.com/company/tarsa-therapeutics) Tarsa Therapeutics develops an oral formulation of calcitonin for the treatment and prevention of postmenopausal osteoporosis. United States $121M
- [*IV* **Intact Vascular**](https://millionrounds.com/company/intact-vascular) Intact Vascular is a medical device company developing minimally-invasive peripheral vascular products. United States $105M
- [*N* **Nucleonics**](https://millionrounds.com/company/nucleonics) Nucleonics is a biotechnology company focused on RNA interference-based therapeutics. United States $49M
- [*S* **StageMark**](https://millionrounds.com/company/stagemark) StageMark develops and markets inflammatory diseases identification and monitoring solutions. United States $1.9M

### Stage not reported

2 startups · $97M raised

- [*RM* **Rapid Micro**](https://millionrounds.com/company/rapid-micro) United States $60M
- [**Vesper Medical**](https://millionrounds.com/company/vesper-medical) Vesper Medical is committed to developing safe, efficacious and easy-to-use products for patients. United States $37M

### Series C and later

2 startups · $287M raised

- [*RB* **Regado Biosciences**](https://millionrounds.com/company/regado-biosciences) Regado Biosciences develops antithrombotic drug systems for acute and sub-acute cardiovascular and other indications. United States $177M
- [**Neuronetics**](https://millionrounds.com/company/neuronetics) Neuronetics is a medical device company that develops non-invasive therapies for psychiatric and neurological disorders. United States $110M

### Series A

2 startups · $47M raised

- [**Optherion**](https://millionrounds.com/company/optherion) Optherion, Inc., a biotechnology company, develops diagnostic and disease-modifying therapeutics for the management and treatment United States $42M
- [**BioLeap**](https://millionrounds.com/company/bioleap) Bioleap is a biotechnology company that uses a modeling approach to develop the next generation of biologics using an AI model. United States $5.0M

**How this map is made.** Every startup here works in Biotech and has raised money in a round we track that names Quaker Partners as an investor. Each sits under the stage of its latest round. Rebuilt nightly; updated 15 November 2026.

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[All portfolios](https://millionrounds.com/portfolio-maps)

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