# Jonathan Bronson

> Jonathan Bronson is a seed investor at J2 Ventures backing Manufacturing and Electronics. See 5 investments, check sizes, portfolio. Updated Aug 2026.

- Type: Angel Investor
- Fund: [J2 Ventures](https://shizune.co/investors/profile/j2-ventures)
- Total investments: 5
- Last investment: Jun 2025
- Lead investor: 80%
- Last updated: Aug 2026
- LinkedIn: https://www.linkedin.com/in/jonathanbronson/

Jonathan Bronson is a seed investor at J2 Ventures focused on Manufacturing and Electronics. Jonathan Bronson is the Managing Partner at J2 Ventures and Board of Director of Phoenix Semiconductor.

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| Manufacturing | 3 | 60% |
| Electronics | 2 | 40% |
| SaaS | 1 | 20% |
| Computer | 1 | 20% |
| Semiconductor | 1 | 20% |

7 industries tracked in total.

### Stage

| Stage | Investments | Share |
| --- | --- | --- |
| Seed | 4 | 80% |
| Series A | 1 | 20% |

## Investments

| Company | Description | Amount | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| Phoenix Semiconductor | Phoenix offers clients a dependable, safe, and everlasting source for vital microelectronic parts that aren't available through traditional channels because of obsolescence and other supply chain interruptions. | $5.5M | Seed | Jun 10, 2025 |  |
| LightSource | LightSource develops a supply chain management platform to help professionals collaborate with their suppliers. It also allows collaborating with teammates on strategic sourcing projects, sending RFQs to suppliers and collecting quotes, and comparing bids using insights automatically extracted from the normal day-to-day work.The company wasfounded in 2021 and is headquartered in San Francisco, California. | $33M | Series A | Mar 31, 2025 |  |
| Parallel Fluidics | Parallel Fluidics is a new microfluidics manufacturing company out of Boston. The company started in 2019 to solve a problem they’d faced firsthand as engineers: it’s hard to get quality microfluidic prototypes, fast. | $7M | Seed | Nov 07, 2024 |  |
| Mesa Quantum | Mesa Quantum is an electronics manufacturing company that provides quantum sensors and integrable chip-scale technology solutions. | $3.7M | Seed | Sep 05, 2024 |  |
| Kusari | Kusari is a company that specializes in software supply chain security. It provides comprehensive solutions to safeguard the development process. The company's mission is to bring transparency to the software supply chain and power secure development. Kusari offers a product named GUAC (Graph for Understanding Artifact Composition) that isdesigned to ensure the integrity and security of the software supply chain. The company also has a presence on GitHub, where it maintains repositories related to its work. | $8.1M | Seed | Jan 02, 2024 |  |

5 of 5 investments shown.

## Co-investors
- [Lightspeed Venture Partners](https://shizune.co/investors/profile/lightspeed-venture-partners) — VC Fund, 2 deals together
- [Pillar VC](https://shizune.co/investors/profile/pillar-companies-2) — VC Fund, 2 deals together
- [8VC](https://shizune.co/investors/profile/8vc) — VC Fund, 1 deal together
- [Bain Capital Ventures](https://shizune.co/investors/profile/bain-capital-ventures) — VC Fund, 1 deal together
- [Glasswing Ventures](https://shizune.co/investors/profile/glasswing-vc) — VC Fund, 1 deal together
- [SOSV HAX](https://shizune.co/investors/profile/hax-accelerator) — VC Fund, 1 deal together

## About J2 Ventures

VC Fund · Boston, United States

J2 Ventures operates as a venture capital firm. J2 Ventures is focused on leading-edge technology with dual-use applications to national security and the commercial sector

4 contacts available at J2 Ventures.

| Name | Title | Profile |
| --- | --- | --- |
| Jonathan Bronson | Co-founder and Managing Partner | https://shizune.co/investors/profile/jonathan-bronson-6326 |
| Matt Goldman | General Partner | https://shizune.co/investors/profile/dr-matt-goldman |
| Tom Hennessey | Co-Founder&Venture Partner | https://shizune.co/investors/profile/tom-hennessey-dc8f |
| Tom Hennessey | Venture Partner; Co-Founder&Venture Partner | https://shizune.co/investors/profile/tom-hennessey |

## Similar investors

### Similar stage
- [Antler](https://shizune.co/investors/profile/antler-be9c) — VC Fund
- [Alumni Ventures](https://shizune.co/investors/profile/alumni-ventures-group) — VC Fund
- [Right Side Capital Management](https://shizune.co/investors/profile/right-side-capital-management) — VC Fund

## FAQ

### What does Jonathan Bronson invest in?

Jonathan Bronson invests primarily in Manufacturing, Electronics and SaaS startups, most often at Seed and Series A stage. Most of the 5 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 Bronson last invest?

The most recent investment recorded for Jonathan Bronson closed in Jun 2025. Shizune tracks 5 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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