# Grant Silow

> Grant Silow is a startup investor at 25madison. See 0 investments, check sizes, portfolio and contact details. Updated Aug 2026.

- Type: Angel Investor
- Fund: [25madison](https://shizune.co/investors/profile/25madison)
- Last updated: Aug 2026
- LinkedIn: https://www.linkedin.com/in/grant-silow/

Grant Silow is a startup investor at 25madison. Grant Silow - Managing Director @ 25madison

## Contacts

5 contacts available for Grant Silow: 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/grant-silow-af64?utm_source=investor_profile

## About 25madison

VC Fund · New York, United States

25madison is an early-stage venture platform: working with entrepreneurs to build companies from the ground up and investing in pre-seed to series A startups. The platform is comprised of 4 segments: (i) General studio: Builds companies across verticals (ii) 25m health: Builds and invests in healthtech startups in partnership with LifePointHealth (iii) Ventures fund: Invests in pre-seed to series A startups focused on B2B SaaS, fintech, and healthtech (iv) 25m create: Brand and experience agency with services including brand strategy, visual identity, experience design, and web & digital marketing

5 contacts available at 25madison.

| Name | Title | Profile |
| --- | --- | --- |
| Gary Ginsberg | Co-Founder | https://shizune.co/investors/profile/gary-ginsberg |
| Grant Silow | Managing Director | — |
| Justine Lee | Chief Operating Officer | — |
| Kirk Posmantur | Co-Founder and CMO | https://shizune.co/investors/profile/kirk-posmantur |
| Lance West | Co-Founder | — |

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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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