# Ben Hamner

> Ben Hamner is a seed investor at Sumble backing Software and Machine Learning. See 4 investments, check sizes, portfolio and contact details. Updated Aug 2026.

- Type: Angel Investor
- Fund: Sumble
- Location: San Francisco, United States
- Total investments: 4
- Last investment: Nov 2024
- Lead investor: 0%
- Last updated: Aug 2026
- LinkedIn: https://www.linkedin.com/in/ben-hamner-98759712
- X (Twitter): https://twitter.com/benhamner
- Website: http://benhamner.com
- Facebook: https://www.facebook.com/ben.hamner

Ben Hamner is a seed investor at Sumble in San Francisco focused on Software and Machine Learning. Ben Hamner is based out of San Francisco and is the Co-Founder and CTO of Sumble. Ben previously worked at Kaggle as a Co-Founder and CTO. Ben Hamner attended Duke University.

## Contacts

5 contacts available for Ben Hamner: 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/ben-hamner?utm_source=investor_profile

## Round sizes

| Stage | Round size |
| --- | --- |
| Seed | $5M–$5M |

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| Software | 2 | 50% |
| Machine Learning | 2 | 50% |
| Artificial Intelligence | 2 | 50% |
| Education | 1 | 25% |
| E-Learning | 1 | 25% |

9 industries tracked in total.

### Stage

| Stage | Investments | Share |
| --- | --- | --- |
| Seed | 2 | 50% |
| Angel | 1 | 25% |
| Series A | 1 | 25% |

### Country

| Country | Investments | Share |
| --- | --- | --- |
| United States | 3 | 75% |
| Brazil | 1 | 25% |

## Investments

| Company | Description | Amount | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| Marimo | Marimo is an open-source reactive platform for developers working on Python. | $5M | Seed | Nov 20, 2024 |  |
| Predibase | State-of-the-art machine learning for engineers and data practitioners as easy as writing a SQL query | $16.3M | Series A | May 10, 2022 |  |
| Awari | Awari is an education startup upskilling Latam with a modern approach to education. We offer project-driven, cohort-based courses, and students receive feedback and one-on-one mentorship from mentors who work at companies like Disney, Apple, Google and other top companies. | $678.4K | Angel | Feb 15, 2022 |  |
| Coiled | Coiled is a modern solution for seamlessly scaling data science, machine learning, and AI in Python. | $5M | Seed | Oct 01, 2020 |  |

4 of 4 investments shown.

## Co-investors
- [Costanoa Ventures](https://shizune.co/investors/profile/costanoaventures) — VC Fund, 2 deals together
- [Greylock](https://shizune.co/investors/profile/greylock) — VC Fund, 2 deals together
- [AIX Ventures](https://shizune.co/investors/profile/aix-ventures) — VC Fund, 1 deal together
- [Factory](https://shizune.co/investors/profile/factory-8c60) — VC Fund, 1 deal together
- [IA Ventures](https://shizune.co/investors/profile/ia-ventures) — VC Fund, 1 deal together
- [Sancus Ventures](https://shizune.co/investors/profile/sancus-ventures) — VC Fund, 1 deal together

## About Sumble

VC Fund · San Francisco, United States

Sumble provides a sales intelligence platform that crawls the web for technographic and contact data, giving sales teams context on prospective customers.

1 contacts available at Sumble.

| Name | Title | Profile |
| --- | --- | --- |
| Ben Hamner | Co-Founder & CTO | https://shizune.co/investors/profile/ben-hamner |

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## FAQ

### What does Ben Hamner invest in?

Ben Hamner invests primarily in Software, Machine Learning and Artificial Intelligence startups, most often at Seed and Angel 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.

### What is Ben Hamner's check size?

Ben Hamner typically joins rounds of $5M–$5M at Seed. These ranges are 10th–90th percentile round sizes calculated from confirmed public funding rounds, so they are a realistic guide to the rounds Ben Hamner participates in.

### How do I contact Ben Hamner?

Public channels for Ben Hamner 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 Ben Hamner last invest?

The most recent investment recorded for Ben Hamner closed in Nov 2024. 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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