# Stephan Cizmar

> Stephan Cizmar is a seed investor at Blackhorn Ventures backing Software. See 3 investments, check sizes, portfolio. Updated Aug 2026.

- Type: Angel Investor
- Fund: [Blackhorn Ventures](https://shizune.co/investors/profile/blackhorn-ventures)
- Location: Brooklyn, United States
- Total investments: 3
- Last investment: Apr 2025
- Lead investor: 0%
- Last updated: Aug 2026
- LinkedIn: https://www.linkedin.com/in/stephancizmar/
- X (Twitter): https://twitter.com/sjcizmar?lang=en

Stephan Cizmar is a seed investor at Blackhorn Ventures in Brooklyn focused on Software and Artificial Intelligence. Stephan Cizmar has 3 current jobs including Operating Partner at Blackhorn Ventures, Chief Strategy Officer, Founding Team at Lang.ai, and Partner at Lorimer Ventures.He attended Georgetown University McDonough School of Business.

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| Software | 2 | 67% |
| Artificial Intelligence | 2 | 67% |
| Energy | 1 | 33% |
| Restaurants | 1 | 33% |
| Customer Service | 1 | 33% |

7 industries tracked in total.

### Stage

| Stage | Investments | Share |
| --- | --- | --- |
| Seed | 2 | 67% |
| Pre-Seed | 1 | 33% |

## Investments

| Company | Description | Amount | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| Hostie | Hostie is an AI-first customer experience platform designed for restaurants, automating guest inquiries, reservations, and takeout orders. We proudly partner with some of the world’s top restaurants, including Flour + Water, Nisei, Slanted Door, ILIS, and more. Co-founded by a product designer-turned-restaurateur and an AI engineer, Hostie blendshospitality expertise with cutting-edge technology to enhance restaurant operations. | $4M | Seed | Apr 29, 2025 |  |
| Hark | Hark is a New York-based startup that make the authentication process frictionless and bring video to life as the first step in the CX journey. | $1.5M | Pre-Seed | Aug 10, 2022 |  |
| Amperon | Amperon is a provider of smart meters to deliver real-time energy data forecasts. There over 70M smart meters currently installed in the country, collecting 15 minute resolution electricity data for every type of ratepayer (including residential, commercial, and industrial). The data has been relatively untapped for the past decade, and Amperon isleveraging it to charge forward and bring AI to the energy world to usher in the smart grid of the future. | $860K | Seed | Apr 18, 2018 |  |

3 of 3 investments shown.

## Co-investors
- [Everywhere Ventures](https://shizune.co/investors/profile/everywhere-ventures) — VC Fund, 4 deals together
- [Burst Capital](https://shizune.co/investors/profile/burst-capital) — VC Fund, 1 deal together
- [Daring Ventures](https://shizune.co/investors/profile/daring-ventures) — VC Fund, 1 deal together
- [Gradient](https://shizune.co/investors/profile/gradient-ventures) — VC Fund, 1 deal together
- [Green Egg Ventures](https://shizune.co/investors/profile/greeneggventures) — VC Fund, 1 deal together
- [Hatchet Ventures](https://shizune.co/investors/profile/hatchet-ventures) — VC Fund, 1 deal together

## About Blackhorn Ventures

VC Fund · Boulder, United States

Blackhorn Ventures is an early-stage venture firm that invests in companies using cutting edge engineering to improve resource productivity. The firm was founded in 2016 and is headquartered in Denver, Colorado.

5 contacts available at Blackhorn Ventures.

| Name | Title | Profile |
| --- | --- | --- |
| Jack Fuchs | Co-Founder, Operating Partner | https://shizune.co/investors/profile/jack-fuchs |
| Bill Ritter | Operating Partner | https://shizune.co/investors/profile/bill-ritter |
| David Mindell | Operating Partner | https://shizune.co/investors/profile/david-mindell |
| David Mindell | Operating Partner | https://shizune.co/investors/profile/david-mindell-2 |
| Mark Loch | Operating Partner; Director Strategy and Insights | https://shizune.co/investors/profile/mark-loch-4a6c |

## 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
- [Right Side Capital Management](https://shizune.co/investors/profile/right-side-capital-management) — VC Fund

## FAQ

### What does Stephan Cizmar invest in?

Stephan Cizmar invests primarily in Software, Artificial Intelligence and Energy startups, most often at Seed and Pre-Seed stage. Most of the 3 investments tracked by Shizune back companies in United States. The Investment Focus section breaks down every industry, stage and country in the portfolio.

### When did Stephan Cizmar last invest?

The most recent investment recorded for Stephan Cizmar closed in Apr 2025. Shizune tracks 3 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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