# Stefan Cohen

> Stefan Cohen is a Series A investor at Bain Capital Ventures backing Software. See 23 investments, check sizes, portfolio. Updated Aug 2026.

- Type: Angel Investor
- Fund: [Bain Capital Ventures](https://shizune.co/investors/profile/bain-capital-ventures)
- Location: San Francisco, United States
- Total investments: 23
- Last investment: May 2026
- Lead investor: 61%
- Last updated: Aug 2026
- LinkedIn: https://www.linkedin.com/in/stefan-cohen-90bb1b21/

Stefan Cohen is a Series A investor at Bain Capital Ventures in San Francisco focused on Software and Information Technology. Stefan Cohen is based out of San Francisco, California and is the Managing Director and Member of Crypto Team of Bain Capital Ventures. Stefan previously worked at Turbonomic. Stefan Cohen attended the Clark University.

## Round sizes

| Stage | Round size |
| --- | --- |
| Seed | $2.9M–$6.2M |
| Series A | $8M–$88M |
| Series B | $25M–$128M |

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| Software | 7 | 30% |
| Information Technology | 4 | 17% |
| Blockchain | 3 | 13% |
| Cryptocurrency | 3 | 13% |
| Computer | 2 | 9% |

29 industries tracked in total.

### Stage

| Stage | Investments | Share |
| --- | --- | --- |
| Series A | 6 | 26% |
| Series B | 6 | 26% |
| Seed | 4 | 17% |
| Pre-Seed | 1 | 4% |
| Series C | 1 | 4% |

8 stages tracked in total.

### Country

| Country | Investments | Share |
| --- | --- | --- |
| United States | 9 | 39% |
| France | 1 | 4% |
| Armenia | 1 | 4% |
| Germany | 1 | 4% |

## Investments

| Company | Description | Amount | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| Turnkey | Turnkey is an encryption service provider that offers secure APIs to manage private keys. | $12.5M | Venture - Series Unknown | May 14, 2026 |  |
| Meanwhile | Meanwhile is a licensed and regulated life insurance business. | $82M | Series B | Oct 07, 2025 |  |
| M0 | M^0 is money middleware for the digital age. It is a decentralized, on-chain protocol, as well as a corresponding set of off-chain standards and APIs, that allows holders of high-quality eligible collateral to participate in the issuance of a fungible cryptodollar. With M^0, any number of institutions around the world can tap on turnkey middlewareto become their own cryptodollar issuer, upgrading their money tech stack to the digital age. | $40M | Series B | Aug 28, 2025 |  |
| Turnkey | Turnkey is an encryption service provider that offers secure APIs to manage private keys. | $30M | Series B | Jun 09, 2025 |  |
| Curio | Curio Research is focusing on building games that create rich and expansive social interactions through the composability of crypto and the power of smart contracts. | $5.7M | Seed | Aug 06, 2024 |  |
| Cube Dev | Cube Dev is a computer software company that specializes in the fields of open source, analytics, databases, and developer tools. It provides a complete backend API platform over the raw data while giving the full customization and flexibility on the frontend. | $25M | Series B | Jun 06, 2024 |  |
| M0 | M^0 is money middleware for the digital age. It is a decentralized, on-chain protocol, as well as a corresponding set of off-chain standards and APIs, that allows holders of high-quality eligible collateral to participate in the issuance of a fungible cryptodollar. With M^0, any number of institutions around the world can tap on turnkey middlewareto become their own cryptodollar issuer, upgrading their money tech stack to the digital age. | $35M | Series A | Jun 05, 2024 |  |
| Curio | Curio Research is focusing on building games that create rich and expansive social interactions through the composability of crypto and the power of smart contracts. | $2.9M | Seed | Feb 21, 2023 |  |
| Nucleo | Nucleo will promote the adoption of blockchain technologies that protect user privacy with its non-custodial, programmable, and auditability solutions. It uses powerful multi-signature and zero-knowledge cryptography to give any organisation with the privacy infrastructure necessary to benefit from better capital formation, allocation, anddistributed ownership. | $4M | Seed | Nov 22, 2022 |  |
| HYCU | HYCU is the fastest-growing leader in the multi-cloud and SaaS data protection as a service industry. By bringing true SaaS-based data backup and recovery to on-premises, cloud-native, and SaaS IT environments, the company provides unrivaled data protection, migration, disaster recovery, and ransomware protection to thousands of companiesworldwide. The company's award-winning R-Cloud platform eliminates complexity, risk, and the high cost of legacy-based solutions, providing data protection simplicity to make it the#1 SaaS Data Protection platform. With an industry leading NPS score of 91, HYCU has raised $140M in VC funding to date and is based in Boston, Mass. Learn more at www.hycu.com. | $53M | Series B | Jun 09, 2022 |  |

10 of 23 investments shown.

## Co-investors
- [overtime.vc](https://shizune.co/investors/profile/overtime-vc) — VC Fund, 4 deals together
- [Polychain](https://shizune.co/investors/profile/polychain-capital) — VC Fund, 4 deals together
- [Acrew Capital](https://shizune.co/investors/profile/acrew-capital) — VC Fund, 3 deals together
- [Castle Island Ventures](https://shizune.co/investors/profile/castle-island-ventures) — VC Fund, 3 deals together
- [Eniac Ventures](https://shizune.co/investors/profile/eniac-ventures) — VC Fund, 3 deals together
- [Founders Fund](https://shizune.co/investors/profile/founders-fund) — VC Fund, 3 deals together

## About Bain Capital Ventures

VC Fund · San Francisco, United States

With over $10B under management, Bain Capital Ventures (BCV) offers distinctive access to Bain Capital's broader industry expertise and portfolio of companies. For over 20 years, BCV has invested from seed through IPO and acquisition, backing more than 400 companies including Attentive, Bloomreach, Clari, Docusign, Flywire, LinkedIn,Moveworks, Redis, Rubrik and ShipBob.

5 contacts available at Bain Capital Ventures.

| Name | Title | Profile |
| --- | --- | --- |
| Benjamin Nye | Senior Advisor | https://shizune.co/investors/profile/j-benjamin-nye |
| Kevin Zhang | Partner | https://shizune.co/investors/profile/kevin-zhang-3 |
| Michael Krupka | Partner | https://shizune.co/investors/profile/mike-krupka |
| Paul Zurlo | Partner & COO | https://shizune.co/investors/profile/paul-zurlo |
| Ron Miasnik | Partner | https://shizune.co/investors/profile/ron-miasnik |

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## FAQ

### What does Stefan Cohen invest in?

Stefan Cohen invests primarily in Software, Information Technology and Blockchain startups, most often at Series A and Series B stage. Most of the 23 investments tracked by Shizune back companies in United States. The Investment Focus section breaks down every industry, stage and country in the portfolio.

### What is Stefan Cohen's check size?

Stefan Cohen typically joins rounds of $2.9M–$6.2M at Seed, $8M–$88M at Series A and $25M–$128M at Series B. These ranges are 10th–90th percentile round sizes calculated from confirmed public funding rounds, so they are a realistic guide to the rounds Stefan Cohen participates in.

### When did Stefan Cohen last invest?

The most recent investment recorded for Stefan Cohen closed in May 2026. Shizune tracks 23 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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