# Johnathan Kol-Bar

> Johnathan Kol-Bar is a pre-seed investor in London. See 1 investment, round sizes, portfolio and contact details. Updated Oct 2026.

- Type: Angel Investor
- Location: London, United Kingdom
- Total investments: 1
- Last investment: Oct 2024
- Lead investor: 0%
- Last updated: Oct 2026
- LinkedIn: https://www.linkedin.com/in/johnathan-kol-bar-01b4457/

Johnathan Kol-Bar is a pre-seed investor in London. Johnathan Kol-Bar is the Founder and CEO of Yellow Brick Capital Advisers.

## Contacts

5 contacts available for Johnathan Kol-Bar: 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/johnathan-kol-bar?utm_source=investor_profile

## Investments

| Company | Description | Round size | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| Singulate | The early Hopin team (#1, #4, #30 are cofounders) are back together to solve the biggest problem they saw in events and marketing at Hopin. They’re building a next gen AI marketing platform called Singulate. Singulate provides the easiest way to do audience segmentation and better relevance-personalization for marketing to individuals at scale —results of up to 10X higher CTRs and 5X response rates. They’re helping marketers (in demand gen, growth, community/events) nurture and convert more pipeline from their events and existing customers - it’s not an AI cold outreach sales tool (although it can do reactivations) but rather a lifecycle growth marketing tool. The best personalization is invisible - this is the future of large-scale communication. Get a demo to see the product. | $2.3M | Pre-Seed | Oct 08, 2024 | https://www.singulate.com |

1 of 1 investments shown.

## Co-investors
- [BackFuture](https://shizune.co/investors/profile/backfuture) — VC Fund, 1 deal together
- [Bowery Capital](https://shizune.co/investors/profile/bowery-capital) — VC Fund, 1 deal together
- [Draper Startup House](https://shizune.co/investors/profile/draper-startup-house) — VC Fund, 1 deal together
- [Seedcamp](https://shizune.co/investors/profile/seedcamp) — VC Fund, 1 deal together
- [Tribe Theory](https://shizune.co/investors/profile/tribe-theory) — VC Fund, 1 deal together

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## FAQ

### How do I contact Johnathan Kol-Bar?

Public channels for Johnathan Kol-Bar include LinkedIn. 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 Johnathan Kol-Bar last invest?

The most recent investment recorded for Johnathan Kol-Bar closed in Oct 2024. Shizune tracks 1 investment 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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