# Byron Alsberg

> Byron Alsberg is a Series A investor at Prefix Capital backing Artificial Intelligence. See 4 investments, check sizes, portfolio and contact details…

- Type: Angel Investor
- Fund: [Prefix Capital](https://shizune.co/investors/profile/prefix-capital)
- Location: San Francisco, United States
- Total investments: 4
- Last investment: Aug 2023
- Lead investor: 50%
- Last updated: Aug 2026
- LinkedIn: https://www.linkedin.com/in/byronalsberg/
- Website: https://www.prefixcapital.com/

Byron Alsberg is a Series A investor at Prefix Capital in San Francisco focused on Artificial Intelligence and Analytics. Byron Alsberg - Founder and General Partner @ Prefix Capital

## Contacts

5 contacts available for Byron Alsberg: work email, personal email, work phone, personal phone and socials. Sign up free to unlock them: https://app.shizune.co/sign-up/investor-profiles/find-email/byron-alsberg?utm_source=investor_profile

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| Artificial Intelligence | 2 | 50% |
| Analytics | 1 | 25% |
| Biopharma | 1 | 25% |
| Blockchain | 1 | 25% |
| Biotechnology | 1 | 25% |

12 industries tracked in total.

### Stage

| Stage | Investments | Share |
| --- | --- | --- |
| Series A | 3 | 75% |
| Series B | 1 | 25% |

## Investments

| Company | Description | Amount | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| Symmetry Systems | Symmetry Systems operates as a data and AI security company delivering a security-first platform called DataGuard, designed for visibility and governance of sensitive data across hybrid environments. It employs AI-driven scanning to discover, classify, and map structured and unstructured data across cloud and on-prem systems, then continuouslymonitors access patterns, detects anomalies, and enforces data governance policies without compromising custody of the data. The platform can be deployed in high-assurance and air-gapped environments, handles sensitive data even in restricted settings, and integrates with existing security stacks to support compliance and security teams in implementing data-centric zero-trust models. | $17.7M | Series B | Aug 09, 2023 |  |
| Symmetry Systems | Symmetry Systems operates as a data and AI security company delivering a security-first platform called DataGuard, designed for visibility and governance of sensitive data across hybrid environments. It employs AI-driven scanning to discover, classify, and map structured and unstructured data across cloud and on-prem systems, then continuouslymonitors access patterns, detects anomalies, and enforces data governance policies without compromising custody of the data. The platform can be deployed in high-assurance and air-gapped environments, handles sensitive data even in restricted settings, and integrates with existing security stacks to support compliance and security teams in implementing data-centric zero-trust models. | $15M | Series A | Jun 23, 2021 |  |
| VIA | VIA helps energy companies across the globe realize the value of their data through AI and blockchain. The company enables an encrypted analysis of confidential and classified data. It solves asset management and operational issues alongside key players in the energy industry and works with governments, regulators, and large global utilities on AIinitiatives like predictive maintenance and contingency planning.Founded in 2016, VIA is headquartered in Somerville, Massachusetts. | $10.1M | Series A | May 11, 2021 |  |
| Manus Bio | Manus Bio develops an advanced fermentation technology to recreate plant processes in microorganisms. Its technology helps in manufacturing complex and bioactive natural products such as flavors, fragrances, food ingredients, bio-pesticides, and pharmaceuticals. | $19.4M | Series A | Jul 04, 2018 |  |

4 of 4 investments shown.

## Co-investors
- [Forgepoint Capital](https://shizune.co/investors/profile/forgepoint-capital) — VC Fund, 2 deals together
- [Accenture Ventures](https://shizune.co/investors/profile/accenture-ventures) — VC Fund, 1 deal together
- [Nelstone Ventures](https://shizune.co/investors/profile/nelstone-ventures) — VC Fund, 1 deal together
- [NXT Ventures](https://shizune.co/investors/profile/nxt-ventures) — VC Fund, 1 deal together
- [Adit Ventures](https://shizune.co/investors/profile/psp-ventures) — VC Fund, 1 deal together
- [The Syndicate Group](https://shizune.co/investors/profile/the-syndicate-group) — VC Fund, 1 deal together

## About Prefix Capital

VC Fund · San Francisco, United States

Prefix Capital is an early-stage, deep-tech VC that invests in foundational technologies. It was founded in 2019 and is based in San Francisco, California.

2 contacts available at Prefix Capital.

| Name | Title | Profile |
| --- | --- | --- |
| Byron Alsberg | Founder and General Partner | — |
| Owen Van Natta | Founder and Managing Partner | https://shizune.co/investors/profile/owen-van-natta |

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## FAQ

### What does Byron Alsberg invest in?

Byron Alsberg invests primarily in Artificial Intelligence, Analytics and Biopharma startups, most often at Series A and Series B stage. Most of the 4 investments tracked by Shizune back companies in United States. The Investment Focus section breaks down every industry, stage and country in the portfolio.

### How do I contact Byron Alsberg?

Public channels for Byron Alsberg include LinkedIn and the website linked on this profile. For a verified work email and phone number, create a free Shizune account — contact data is searched across 20+ sources and validated before delivery, so your outreach lands in the right inbox.

### When did Byron Alsberg last invest?

The most recent investment recorded for Byron Alsberg closed in Aug 2023. Shizune tracks 4 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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