# Dan Greenberg

> Dan Greenberg is a seed investor backing Internet and Infrastructure. See 1 investments, check sizes, portfolio and contact details. Updated Sep 2026.

- Type: Angel Investor
- Total investments: 1
- Last investment: Jul 2019
- Lead investor: 0%
- Last updated: Sep 2026

Dan Greenberg is a seed investor focused on Internet and Infrastructure.

## Contacts

5 contacts available for Dan Greenberg: 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/dan-ackerman-greenberg?utm_source=investor_profile

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| Internet | 1 | 100% |
| Infrastructure | 1 | 100% |
| Network Security | 1 | 100% |

## Investments

| Company | Description | Amount | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| Syntropy | Syntropy is transforming the public internet into a secure and user-centric internet through a unifying layer where the encryption and optimized performance are built-in and automatically enabled for anything and everything connected to it. | $5M | Seed | Jul 04, 2019 | https://syntropynet.com |

1 of 1 investments shown.

## Co-investors
- [Alpha Transform Holdings](https://shizune.co/investors/profile/alpha-sigma-capital) — VC Fund, 1 deal together
- [BlockWater Management](https://shizune.co/investors/profile/blockwater-capital) — VC Fund, 1 deal together
- [Maven 11 Capital](https://shizune.co/investors/profile/maven-11-capital) — VC Fund, 1 deal together

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### Similar industry
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### Similar stage
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### Similar country
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## Featured in investor lists
- [Infrastructure Investors in Gibraltar](https://shizune.co/investors/infrastructure-investors-gibraltar)
- [Infrastructure Angel Investors in Gibraltar](https://shizune.co/investors/infrastructure-angel-investors-gibraltar)
- [Internet Investors in Gibraltar](https://shizune.co/investors/internet-investors-gibraltar)
- [Internet Angel Investors in Gibraltar](https://shizune.co/investors/internet-angel-investors-gibraltar)

## FAQ

### What does Dan Greenberg invest in?

Dan Greenberg invests primarily in Internet, Infrastructure and Network Security startups, most often at Seed stage. Most of the 1 investments tracked by Shizune back companies in Gibraltar. The Investment Focus section breaks down every industry, stage and country in the portfolio.

### How do I contact Dan Greenberg?

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 Dan Greenberg last invest?

The most recent investment recorded for Dan Greenberg closed in Jul 2019. Shizune tracks 1 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 Sep 2026 and is updated monthly. Spotted something off? Use the “Suggest an edit” link near the top of the page.

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