# Matthew Greitzer

> Matthew Greitzer is a seed investor at Actable backing Information Technology. See 2 investments, round sizes, portfolio and contact details. Updated Aug 2026.

- Type: Angel Investor
- Fund: Actable
- Location: New York, United States
- Total investments: 2
- Last investment: Dec 2021
- Lead investor: 0%
- Last updated: Aug 2026
- LinkedIn: https://www.linkedin.com/in/mattgreitzer
- X (Twitter): https://twitter.com/mattgreitzer
- Website: https://actabledata.com

Matthew Greitzer is a seed investor at Actable in New York focused on Information Technology and Events. Matt is based out of New York, New York and is the Co-Founder and CEO of Predictable. Matthew previously worked at Amnet Programmatic Experts for Dentsu Aegis Network as a Co-CEO. Matthew Greitzer attended Bowdoin College.

## Contacts

5 contacts available for Matthew Greitzer: 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/matt-greitzer?utm_source=investor_profile

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| Information Technology | 2 | 100% |
| Events | 1 | 50% |
| FinTech | 1 | 50% |
| Wedding | 1 | 50% |
| Payments | 1 | 50% |

11 industries tracked in total.

## Investments

| Company | Description | Round size | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| ArcSpan Technologies | ArcSpan is a B2B audience data technology company that delivers enterprise-class addressable audience data monetization platform solutions to maximize publisher’s ad sales revenue amidst the "identity revolution.” | $6M | Seed | Dec 15, 2021 |  |
| Maroo | Maroo is a payment platform tailored for the wedding and events industry, allowing businesses to manage payments with no processing fees. It supports payment acceptance, branded invoice creation, and payments to freelancers and suppliers. A notable feature is its zero fee model, where fees can be passed onto clients. Trusted by over 9,000businesses, Maroo has facilitated more than $180 million in revenue for its community of event professionals | $3M | Seed | Sep 10, 2021 |  |

2 of 2 investments shown.

## Co-investors
- [VentureSouq](https://shizune.co/investors/profile/venturesouq) — VC Fund, 2 deals together
- [Darco Capital](https://shizune.co/investors/profile/darco-capital) — VC Fund, 1 deal together
- [Davidovs Venture Collective](https://shizune.co/investors/profile/davidovs-vc) — VC Fund, 1 deal together
- [I2BF Global Ventures](https://shizune.co/investors/profile/i2bf-global-ventures) — VC Fund, 1 deal together
- [Leonis Investissement](https://shizune.co/investors/profile/leonis-investissement) — VC Fund, 1 deal together
- [AperiamVentures](https://shizune.co/investors/profile/mathcapital) — VC Fund, 1 deal together

## About Actable

VC Fund · New York, United States

Actable provides consultation solutions on managing customer data for business growth. It is a customer data accelerator that creates transformative value for our clients – and better experiences for their customers - through the conscientious use of 1st party data. Actable is based in New York, USA.

2 contacts available at Actable.

| Name | Title | Profile |
| --- | --- | --- |
| Matthew Greitzer | Co-Founder | https://shizune.co/investors/profile/matt-greitzer |
| Michael Baumgaertner | Co-Founder | — |

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## FAQ

### What does Matthew Greitzer invest in?

Matthew Greitzer invests primarily in Information Technology, Events and FinTech 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.

### How do I contact Matthew Greitzer?

Public channels for Matthew Greitzer include LinkedIn, X (Twitter) 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 Matthew Greitzer last invest?

The most recent investment recorded for Matthew Greitzer closed in Dec 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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