# David Adelman

> David Adelman is a seed investor backing Software and Health Care. See 4 investments, round sizes, portfolio and contact details. Updated Oct 2026.

- Type: Angel Investor
- Location: Washington, United States
- Total investments: 4
- Last investment: Jan 2024
- Lead investor: 0%
- Last updated: Oct 2026
- LinkedIn: http://www.linkedin.com/in/adelmandavid
- X (Twitter): http://twitter.com/reelgenie
- Facebook: http://www.facebook.com/ReelGenieFilms

David Adelman is a seed investor in Washington focused on Software and Health Care. David Adelman - Senior Director, Head of Business Development @ Toast

## Contacts

5 contacts available for David Adelman: 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/david-adelman?utm_source=investor_profile

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| Software | 1 | 25% |
| Health Care | 1 | 25% |
| Mobile Apps | 1 | 25% |
| Life Science | 1 | 25% |
| Therapeutics | 1 | 25% |

12 industries tracked in total.

### Stage

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

## Investments

| Company | Description | Round size | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| Palm Tree Crew | Palm Tree Crew operates and invests in companies at the intersection of consumer, entertainment, and technology. Palm Tree Crew was co-founded by Kygo, alongside Myles Shear and Austin Criden. | $6M |  | Jan 16, 2024 | https://palmtreecrew.com/ |
| CollX | CollX (pronounced “collects”) is the fastest way to figure out what your cards are worth. Snap photos of them and instantly get the current market price. The company was founded in 2021 and is headquartered in Haddonfield, New Jersey, United States. | $5.5M | Seed | Feb 22, 2023 | http://collx.app |
| Prolific Machines | Prolific Machines is a biotech company developing cell technologies to redefine how cells are produced for a sustainable and healthy future. It combines cutting-edge technologies to enable cell production at a new scale. The company was founded in 2020 and is based in San Francisco, California. | $42M | Series A | Sep 14, 2022 | https://www.prolific-machines.com/ |
| Lightyear | Buy and manage your business telecom services (internet, voice, WAN, data center) through a single, trustworthy pane of glass. Carrier neutral. Transparent. Fast. | $3.7M | Seed | Oct 27, 2020 | https://lightyear.ai |

4 of 4 investments shown.

## Co-investors
- [Contrary](https://shizune.co/investors/profile/contrary-capital) — VC Fund, 2 deals together
- [Amplo](https://shizune.co/investors/profile/amplo) — VC Fund, 1 deal together
- [Baruch Future Ventures](https://shizune.co/investors/profile/baruch-future-ventures) — VC Fund, 1 deal together
- [Ben Franklin Technology Partners](https://shizune.co/investors/profile/ben-franklin-technology-partners) — VC Fund, 1 deal together
- [Brand Foundry Ventures](https://shizune.co/investors/profile/brand-foundry-ventures) — VC Fund, 1 deal together
- [Breakthrough Energy Ventures](https://shizune.co/investors/profile/breakthrough-energy-ventures) — VC Fund, 1 deal together

## Similar investors

### Similar stage
- [Antler](https://shizune.co/investors/profile/antler-be9c) — VC Fund
- [Right Side Capital Management](https://shizune.co/investors/profile/right-side-capital-management) — VC Fund
- [Alumni Ventures](https://shizune.co/investors/profile/alumni-ventures-group) — VC Fund

## FAQ

### What does David Adelman invest in?

David Adelman invests primarily in Software, Health Care and Mobile Apps startups, most often at Seed and Series A 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 David Adelman?

Public channels for David Adelman include LinkedIn, X (Twitter) and Facebook. 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 David Adelman last invest?

The most recent investment recorded for David Adelman closed in Jan 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 Oct 2026 and is updated monthly. Spotted something off? Use the “Suggest an edit” link near the top of the page.

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