# Walter Kortschak

> Walter Kortschak is a seed investor at Firestreak Ventures backing Software. See 143 investments, check sizes, portfolio. Updated Aug 2026.

- Type: Angel Investor
- Fund: [Firestreak Ventures](https://shizune.co/investors/profile/firestreak-ventures)
- Location: Aspen, United States
- Total investments: 143
- Last investment: Jun 2026
- Lead investor: 6%
- Last updated: Aug 2026
- LinkedIn: https://www.linkedin.com/in/walter-kortschak-5a082720
- X (Twitter): http://twitter.com/wkortschak
- Website: https://x.com/wkortschak

Walter Kortschak is a seed investor at Firestreak Ventures in Aspen focused on Software and Information Technology. Walter Kortschak is the Managing Partner at Firestreak Ventures. He attended Caltech, Oregon State University, and the University of California, Los Angeles.

## Round sizes

| Stage | Round size |
| --- | --- |
| Seed | $1.8M–$6.5M |
| Pre-Seed | $100k–$2.7M |
| Series A | $3.3M–$100M |

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| Software | 36 | 25% |
| Information Technology | 17 | 12% |
| SaaS | 10 | 7% |
| Artificial Intelligence | 10 | 7% |
| Enterprise Software | 9 | 6% |

125 industries tracked in total.

### Stage

| Stage | Investments | Share |
| --- | --- | --- |
| Seed | 41 | 29% |
| Series A | 24 | 17% |
| Pre-Seed | 12 | 8% |
| Angel | 9 | 6% |
| Funding Round | 8 | 6% |

13 stages tracked in total.

### Country

| Country | Investments | Share |
| --- | --- | --- |
| United States | 60 | 42% |
| Israel | 4 | 3% |
| Germany | 4 | 3% |
| United Kingdom | 2 | 1% |
| India | 1 | 1% |

11 countries tracked in total.

## Investments

| Company | Description | Amount | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| Isometric | Isometric is a carbon removal registry and science platform. | $40M | Series A | Jun 22, 2026 |  |
| Swoop | Swoop operates as an internet marketplace platform that provides food delivery services while building a broader consumer super-app ecosystem. The company connects users with restaurants through a mobile and digital platform, enabling customers to browse menus, place orders, and receive deliveries via an independent rider network. Its deliverymodel relies on third-party couriers who fulfill orders, while the platform coordinates transactions, routing, and customer interactions. The company generates revenue through restaurant commissions and service fees applied to customer orders, rather than directly employing delivery personnel. | $7.3M | Seed | Apr 24, 2026 |  |
| Soma Energy | Soma Energy helps data centers run more effectively and generators trade more intelligently by optimizing the production, storage, and consumption of electricity. |  | Pre-Seed | Apr 02, 2026 |  |
| InkVell | InkVell is an AI research platform that connects scientists and allow them to carry on their research work smoothly. 2025 | $1.4M | Pre-Seed | Dec 08, 2025 |  |
| Giggles | Giggles is a social platform where users create and share content using artificial intelligence tools. The platform includes features for making short videos from prompts. Users can earn a digital currency called aura by engaging in activities and games. Digital assets are available for users to collect and trade. A waitlist is open for those whowant to join the platform. | $1.3M | Pre-Seed | Oct 05, 2025 |  |
| Overmind | Overmind develops software for cloud infrastructure management. The company provides tools that help engineering teams understand infrastructure changes before deployment. The platform analyzes relationships between cloud resources and services. It uses artificial intelligence to identify dependencies and assess the impact of planned changes. Ithelps engineering, DevOps, SRE, and platform teams understand the impact of changes before they go live. | $6M | Seed | Sep 17, 2025 |  |
| Inversion | Inversion is a technology-first investment company that acquires and transforms legacy businesses with blockchain technology. | $26.5M | Seed | Sep 08, 2025 |  |
| Sauna by Wordware | Wordware allows users to create and host their entire LLM stack for AI application development. It offers tools for building, training, and deploying language models. The platform simplifies the integration of various components necessary for AI solutions. Users can manage their applications and data within a unified environment. | $30M | Seed | Nov 21, 2024 |  |
| Twenty | Twenty builds the modern salesforce, powered by the open source community. | $5M | Seed | Nov 19, 2024 |  |
| Twenty (YC S23) | Building a better Salesforce, powered by the Open Source community. | $5M | Seed | Nov 18, 2024 |  |

10 of 143 investments shown.

## Co-investors
- [Kortschak Investments L.P.](https://shizune.co/investors/profile/kortschak-investments-l-p) — VC Fund, 10 deals together
- [Double M Partners](https://shizune.co/investors/profile/double-m-partners) — VC Fund, 8 deals together
- [SignalFire](https://shizune.co/investors/profile/signal-fire) — VC Fund, 7 deals together
- [Y Combinator](https://shizune.co/investors/profile/y-combinator) — VC Fund, 7 deals together
- [Harrison Metal](https://shizune.co/investors/profile/harrison-metal-capital) — VC Fund, 6 deals together
- [Frontier Venture Capital](https://shizune.co/investors/profile/dfj-frontier) — VC Fund, 5 deals together

## About Firestreak Ventures

VC Fund · Aspen, United States

We invest in pre-seed and seed stage companies in the developer tooling, infra, OSS, cybersecurity and ML and AI infra.

2 contacts available at Firestreak Ventures.

| Name | Title | Profile |
| --- | --- | --- |
| Amir Rustamzadeh | Venture Partner | https://shizune.co/investors/profile/amir-rustamzadeh |
| Walter Kortschak | Managing Partner | https://shizune.co/investors/profile/walter-g-kortschak |

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## FAQ

### What does Walter Kortschak invest in?

Walter Kortschak invests primarily in Software, Information Technology and SaaS startups, most often at Seed and Series A stage. Most of the 143 investments tracked by Shizune back companies in United States. The Investment Focus section breaks down every industry, stage and country in the portfolio.

### What is Walter Kortschak's check size?

Walter Kortschak typically joins rounds of $1.8M–$6.5M at Seed, $100k–$2.7M at Pre-Seed and $3.3M–$100M at Series A. These ranges are 10th–90th percentile round sizes calculated from confirmed public funding rounds, so they are a realistic guide to the rounds Walter Kortschak participates in.

### When did Walter Kortschak last invest?

The most recent investment recorded for Walter Kortschak closed in Jun 2026. Shizune tracks 143 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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