# Runtime Ventures

> Runtime Ventures is a VC fund backing Cyber Security and Software. See 18 investments, check sizes, portfolio and contact details. Updated Aug 2026.

- Type: VC Fund
- Total investments: 18
- Last investment: Jul 2026
- Lead investor: 11%
- Last updated: Aug 2026

Runtime Ventures is an investment Firm.

## Contacts

5 contacts available for Runtime Ventures. Shizune tracks 1 team members at Runtime Ventures. Sign up free to unlock them: https://app.shizune.co/sign-up/investor-profiles/find-team-emails/runtime-ventures?utm_source=investor_profile

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| Cyber Security | 6 | 33% |
| Software | 4 | 22% |
| Information Technology | 4 | 22% |
| SaaS | 3 | 17% |
| Security | 3 | 17% |

20 industries tracked in total.

### Stage

| Stage | Investments | Share |
| --- | --- | --- |
| Seed | 12 | 67% |
| Pre-Seed | 2 | 11% |
| Venture - Series Unknown | 1 | 6% |

### Country

| Country | Investments | Share |
| --- | --- | --- |
| United States | 11 | 61% |
| Israel | 2 | 11% |
| The Netherlands | 1 | 6% |

## Team

| Name | Title | Investments | Profile |
| --- | --- | --- | --- |
| Michael Sutton | General Partner & Co-Founder | 57 | https://shizune.co/investors/profile/michaelawsutton |

## Investments

| Company | Description | Amount | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| Bloom Security | Bloom Security is a cybersecurity startup that secures AI-native endpoints by giving enterprises visibility, contextual risk assessment, enforcement, and remediation across AI tools and extensions on employee devices. | $20M | Seed | Jul 30, 2026 |  |
| AiStrike | AiStrike is committed to solving security investigation and response challenges for modern organizations with AI-powered automation. By reducing alert volume by up to 85%, AiStrike helps security teams overcome alert fatigue, while enriching and prioritizing critical alerts for smarter decision-making and faster mean time to resolution (MTTR). WithAiStrike, organizations gain the advantage of real-time alert triage, guided investigation, and automated response – all within one intuitive platform. AiStrike’s custom AI models are run locally, ensuring data privacy and security. | $7M | Seed | Nov 12, 2025 |  |
| RunReveal | RunReveal is a security data platform designed to address the changing hazards of the digital era. | $7M | Seed | Jul 29, 2025 |  |
| SplxAI | SplxAI is a cybersecurity company specializing in automated security testing for AI chatbots, ensuring they remain safe from manipulation and data breaches. The platform continuously monitors and tests chatbots for vulnerabilities such as prompt injection, context leakage, social engineering, and other advanced threats. Key features includereal-time detection and mitigation strategies, multimodal pentesting capabilities (covering text, audio, and video), and comprehensive reporting tools that provide actionable insights for improving security. SplxAI's solution integrates seamlessly with existing security frameworks and platforms, making it easy to deploy and manage. By providing robust protection against a wide range of threats, SplxAI helps enterprises safeguard their AI-driven applications, maintain data integrity, and ensure compliance with industry standards. The company is committed to innovation, continuously enhancing its product to address emerging threats in the rapidly evolving AI landscape. SplxAI is trusted by forward-thinking organizations looking to proactively secure their AI assets and protect sensitive information. | $7M | Seed | Mar 26, 2025 |  |
| SplxAI | SplxAI is a cybersecurity company specializing in automated security testing for AI chatbots, ensuring they remain safe from manipulation and data breaches. The platform continuously monitors and tests chatbots for vulnerabilities such as prompt injection, context leakage, social engineering, and other advanced threats. Key features includereal-time detection and mitigation strategies, multimodal pentesting capabilities (covering text, audio, and video), and comprehensive reporting tools that provide actionable insights for improving security. SplxAI's solution integrates seamlessly with existing security frameworks and platforms, making it easy to deploy and manage. By providing robust protection against a wide range of threats, SplxAI helps enterprises safeguard their AI-driven applications, maintain data integrity, and ensure compliance with industry standards. The company is committed to innovation, continuously enhancing its product to address emerging threats in the rapidly evolving AI landscape. SplxAI is trusted by forward-thinking organizations looking to proactively secure their AI assets and protect sensitive information. | $7M | Seed | Mar 26, 2025 |  |
| ThreatMate | ThreatMate revolutionizes cybersecurity by offering a single platform with inquisitive security capabilities for the middle market. The company was founded by a team of serial entrepreneurs and cybersecurity experts that aims to protect mid-sized companies from cyber threats. | $3.2M | Seed | Feb 06, 2025 |  |
| Prequel | Prequel is a real-time problem identification and resolution tool supported by the global dependability community. | $3.3M | Seed | Dec 16, 2024 |  |
| dweva.com | System Two Security offers a platform that combines AI agents and assistants to support detection engineering teams in processing intelligence, creating new detections, and managing detection libraries. The system enables users to draft and refine detections based on threat intelligence and coverage gaps. | $7M | Venture - Series Unknown | Dec 04, 2024 |  |
| SplxAI | SplxAI is a cybersecurity company specializing in automated security testing for AI chatbots, ensuring they remain safe from manipulation and data breaches. The platform continuously monitors and tests chatbots for vulnerabilities such as prompt injection, context leakage, social engineering, and other advanced threats. Key features includereal-time detection and mitigation strategies, multimodal pentesting capabilities (covering text, audio, and video), and comprehensive reporting tools that provide actionable insights for improving security. SplxAI's solution integrates seamlessly with existing security frameworks and platforms, making it easy to deploy and manage. By providing robust protection against a wide range of threats, SplxAI helps enterprises safeguard their AI-driven applications, maintain data integrity, and ensure compliance with industry standards. The company is committed to innovation, continuously enhancing its product to address emerging threats in the rapidly evolving AI landscape. SplxAI is trusted by forward-thinking organizations looking to proactively secure their AI assets and protect sensitive information. | $2M | Pre-Seed | Sep 10, 2024 |  |
| SplxAI | SplxAI is a cybersecurity company specializing in automated security testing for AI chatbots, ensuring they remain safe from manipulation and data breaches. The platform continuously monitors and tests chatbots for vulnerabilities such as prompt injection, context leakage, social engineering, and other advanced threats. Key features includereal-time detection and mitigation strategies, multimodal pentesting capabilities (covering text, audio, and video), and comprehensive reporting tools that provide actionable insights for improving security. SplxAI's solution integrates seamlessly with existing security frameworks and platforms, making it easy to deploy and manage. By providing robust protection against a wide range of threats, SplxAI helps enterprises safeguard their AI-driven applications, maintain data integrity, and ensure compliance with industry standards. The company is committed to innovation, continuously enhancing its product to address emerging threats in the rapidly evolving AI landscape. SplxAI is trusted by forward-thinking organizations looking to proactively secure their AI assets and protect sensitive information. | $2M | Pre-Seed | Sep 10, 2024 |  |

10 of 18 investments shown.

## Co-investors
- [Inovo.vc](https://shizune.co/investors/profile/inovo-vc) — VC Fund, 4 deals together
- [South Central Ventures](https://shizune.co/investors/profile/sc-ventures) — VC Fund, 4 deals together
- [Blu Venture Investors](https://shizune.co/investors/profile/blu-venture-investors) — VC Fund, 2 deals together
- [Costanoa Ventures](https://shizune.co/investors/profile/costanoaventures) — VC Fund, 2 deals together
- [Cyber Club London](https://shizune.co/investors/profile/cyber-club-london) — VC Fund, 2 deals together
- [DNV](https://shizune.co/investors/profile/dnv) — VC Fund, 2 deals together

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## FAQ

### What does Runtime Ventures invest in?

Runtime Ventures invests primarily in Cyber Security, Software and Information Technology startups, most often at Seed and Pre-Seed stage. Most of the 18 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 Runtime Ventures?

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.

### Who are the partners at Runtime Ventures?

The team at Runtime Ventures includes Michael Sutton (General Partner & Co-Founder). The Team section lists each member with their title, investment count and links.

### 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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