# Erich Tengelsen

> Erich Tengelsen is a Series A investor at Ridgeline Ventures backing Retail. See 4 investments, check sizes, portfolio and contact details. Updated Aug 2026.

- Type: Angel Investor
- Fund: [Ridgeline Ventures](https://shizune.co/investors/profile/ridgeline-ventures)
- Location: Boulder, United States
- Total investments: 4
- Last investment: May 2021
- Lead investor: 25%
- Last updated: Aug 2026

Erich Tengelsen is a Series A investor at Ridgeline Ventures in Boulder focused on Retail and Cycling. Erich Tengelsen is based out of Boulder, Colorado and is the Founding Partner of Ridgeline Ventures. Erich previously worked at Chicago Trading Company as a Founding Partner.

## Contacts

5 contacts available for Erich Tengelsen: 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/erich-tengelsen?utm_source=investor_profile

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| Retail | 1 | 25% |
| Cycling | 1 | 25% |

### Stage

| Stage | Investments | Share |
| --- | --- | --- |
| Series A | 1 | 25% |
| Series B | 1 | 25% |
| Funding Round | 1 | 25% |

## Investments

| Company | Description | Amount | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| The Pro's Closet | The Pro's Closet is a re-Commerce company that specializes in the sales of premium pre-owned bicycles and bike manufacturer/distributor overstock. The Pro’s Closet caters to clients wishing to buy and sell both locally and nationwide and offers pickups, consultations, expert advice, and more. The company provides an avenue for anyone(athletes, teams, shops, reps, companies, you) to free up space and put new and used premium products in the hands of people who will give it a second life.The Pro's Closet was founded in 2006 by Nick Martin and is based in Boulder, Colorado. | $40M | Series B | May 26, 2021 |  |
| The Pro's Closet | The Pro's Closet is a re-Commerce company that specializes in the sales of premium pre-owned bicycles and bike manufacturer/distributor overstock. The Pro’s Closet caters to clients wishing to buy and sell both locally and nationwide and offers pickups, consultations, expert advice, and more. The company provides an avenue for anyone(athletes, teams, shops, reps, companies, you) to free up space and put new and used premium products in the hands of people who will give it a second life.The Pro's Closet was founded in 2006 by Nick Martin and is based in Boulder, Colorado. | $12M | Series A | Sep 09, 2020 |  |
| The Pro's Closet | The Pro's Closet is a re-Commerce company that specializes in the sales of premium pre-owned bicycles and bike manufacturer/distributor overstock. The Pro’s Closet caters to clients wishing to buy and sell both locally and nationwide and offers pickups, consultations, expert advice, and more. The company provides an avenue for anyone(athletes, teams, shops, reps, companies, you) to free up space and put new and used premium products in the hands of people who will give it a second life.The Pro's Closet was founded in 2006 by Nick Martin and is based in Boulder, Colorado. | $9M |  | Sep 15, 2017 |  |
| The Pro's Closet | The Pro's Closet is a re-Commerce company that specializes in the sales of premium pre-owned bicycles and bike manufacturer/distributor overstock. The Pro’s Closet caters to clients wishing to buy and sell both locally and nationwide and offers pickups, consultations, expert advice, and more. The company provides an avenue for anyone(athletes, teams, shops, reps, companies, you) to free up space and put new and used premium products in the hands of people who will give it a second life.The Pro's Closet was founded in 2006 by Nick Martin and is based in Boulder, Colorado. | $2.5M |  | Mar 24, 2016 |  |

4 of 4 investments shown.

## Co-investors
- [Foundry Group](https://shizune.co/investors/profile/foundry-group) — VC Fund, 3 deals together
- [Foundry Group](https://shizune.co/investors/profile/foundryvc) — VC Fund, 3 deals together
- [Edison Partners](https://shizune.co/investors/profile/edison-ventures) — VC Fund, 2 deals together
- [TCG](https://shizune.co/investors/profile/the-chernin-group-llc) — VC Fund, 1 deal together

## About Ridgeline Ventures

VC Fund · Boulder, United States

Ridgeline Ventures (formerly Range Light) is a venture investment firm in natural foods and active lifestyle companies. They invest in founders and companies who are looking for more than just capital. They help healthy living brands map out their strategic vision and bring that vision to life.As former operators, they understand what it’s liketo be in the trenches and they use their experience to provide strategic guidance, operating expertise, and a vast network of contacts for teams seeking a collaborative partner.They look for natural foods and active lifestyle brands with awesome teams and products they love. They are drawn to companies that are dedicated to making a difference and helping people live healthier lives.Because they invest their own capital, they have extraordinary flexibility in the size and type of investments they make, as well as the stage of the company in which they invest. They are comfortable leading investment rounds and also like to collaborate with like-minded partners."

3 contacts available at Ridgeline Ventures.

| Name | Title | Profile |
| --- | --- | --- |
| Erich Tengelsen | Founding Partner | — |
| Luke Vernon | Managing Partner | — |
| Tao Huang | Managing Partner | https://shizune.co/investors/profile/tao-huang |

## Similar investors

### Similar stage
- [Antler](https://shizune.co/investors/profile/antler-be9c) — VC Fund
- [Alumni Ventures](https://shizune.co/investors/profile/alumni-ventures-group) — VC Fund
- [General Catalyst](https://shizune.co/investors/profile/general-catalyst-partners) — VC Fund

## FAQ

### What does Erich Tengelsen invest in?

Erich Tengelsen invests primarily in Retail and Cycling startups, most often at Series A and Series B 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 Erich Tengelsen?

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 Erich Tengelsen last invest?

The most recent investment recorded for Erich Tengelsen closed in May 2021. 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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