# Jonathan Fassberg

> Jonathan Fassberg is a seed investor at Astr Partners (New City) backing Biotechnology. See 2 investments, check sizes, portfolio. Updated Aug 2026.

- Type: Angel Investor
- Fund: [Astr Partners](https://shizune.co/investors/profile/astr-partners)
- Location: New City, United States
- Total investments: 2
- Last investment: Nov 2021
- Lead investor: 0%
- Last updated: Aug 2026
- LinkedIn: https://www.linkedin.com/in/jonathan-fassberg-762aaa5
- Facebook: https://www.facebook.com/jonathan.fassberg

Jonathan Fassberg is a seed investor at Astr Partners in New City focused on Biotechnology. Jonathan Fassberg is based out of and is the Co-Founder and Managing Partner of Astr Partners. Jonathan previously worked at Oppenheimer & Co. Inc as a Vice Chairman. Jonathan Fassberg attended NYU Stern School of Business.

## Investments

| Company | Description | Amount | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| Cellevolve | Cellevolve Bio is a development and commercialization company focused on cell therapies. | $6M | Seed | Nov 18, 2021 |  |
| Cellevolve | Cellevolve Bio is a development and commercialization company focused on cell therapies. | $6M | Seed | Nov 18, 2021 |  |

2 of 2 investments shown.

## Co-investors
- [Hibiscus BioVentures](https://shizune.co/investors/profile/hibiscus-bioventures) — VC Fund, 2 deals together
- [Jumpstart Health Investors](https://shizune.co/investors/profile/jumpstart-health-investors) — VC Fund, 2 deals together
- [Resilience](https://shizune.co/investors/profile/resilience-e701) — VC Fund, 2 deals together
- [THE CATALYTIC IMPACT FOUNDATION (CIF)](https://shizune.co/investors/profile/the-catalytic-impact-foundation-cif) — VC Fund, 2 deals together
- [Pioneer Healthcare Partners](https://shizune.co/investors/profile/pioneer-healthcare-partners) — VC Fund, 1 deal together

## About Astr Partners

VC Fund



1 contacts available at Astr Partners.

| Name | Title | Profile |
| --- | --- | --- |
| Jonathan Fassberg | Co-Founder & Managing Partner | https://shizune.co/investors/profile/jonathan-fassberg |

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- [Right Side Capital Management](https://shizune.co/investors/profile/right-side-capital-management) — VC Fund

## FAQ

### What does Jonathan Fassberg invest in?

Jonathan Fassberg invests primarily in Biotechnology startups, most often at Seed stage. Most of the 2 investments tracked by Shizune back companies in United States. The Investment Focus section breaks down every industry, stage and country in the portfolio.

### When did Jonathan Fassberg last invest?

The most recent investment recorded for Jonathan Fassberg closed in Nov 2021. Shizune tracks 2 investments in total for this profile, including round sizes, stages and portfolio companies, all sourced from confirmed public funding rounds and refreshed monthly.

### Is Shizune's investor data accurate?

Yes — every stat on this profile is calculated from confirmed public funding rounds monitored across hundreds of sources since 2020. This profile was last refreshed in Aug 2026 and is updated monthly. Spotted something off? Use the “Suggest an edit” link near the top of the page.

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