# Jonathan Oberheide

> Jonathan Oberheide is a seed investor at runZero, Inc backing Cyber Security. See 14 investments, round sizes, portfolio and contact details. Updated Aug 2026.

- Type: Angel Investor
- Fund: runZero, Inc
- Location: Ann Arbor, United States
- Total investments: 14
- Last investment: Oct 2025
- Lead investor: 0%
- Last updated: Aug 2026
- LinkedIn: http://www.linkedin.com/in/jonoberheide
- X (Twitter): http://twitter.com/jonoberheide
- Website: http://jon.oberheide.org

Jonathan Oberheide is a seed investor at runZero, Inc in Ann Arbor focused on Cyber Security and Information Technology. Jonathan Oberheide is the Board Member at RunZero. Jon is a well-known security expert and researcher. While his research interests span across the security domain, he has deep expertise in mobile security, cloud security, and malware analysis. Jon attended the University of Michigan for a BS, MS, and PhD in Computer Science, and has held positionsat Merit Network and Arbor Networks.

## Contacts

5 contacts available for Jonathan Oberheide: 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/jon-oberheide?utm_source=investor_profile

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| Cyber Security | 8 | 57% |
| Information Technology | 6 | 43% |
| SaaS | 3 | 21% |
| Security | 3 | 21% |
| Software | 3 | 21% |

18 industries tracked in total.

### Stage

| Stage | Investments | Share |
| --- | --- | --- |
| Seed | 7 | 50% |
| Series A | 4 | 29% |
| Series B | 2 | 14% |
| Series C | 1 | 7% |

### Country

| Country | Investments | Share |
| --- | --- | --- |
| United States | 8 | 57% |
| Canada | 1 | 7% |

## Investments

| Company | Description | Round size | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| Sublime Security | Open, adaptable email security. | $150M | Series C | Oct 28, 2025 |  |
| Corridor | Corridor provides a security platform that integrates directly with AI coding tools and developer workflows to guide secure code generation in real time. It reviews code and pull requests to identify vulnerabilities, enforce security guardrails, and deliver actionable remediation guidance at the source. The platform also offers visibility intoAI-generated code usage, policy compliance, and security events across engineering teams. | $5.4M | Seed | Aug 05, 2025 |  |
| Prequel | Prequel is a real-time problem identification and resolution tool supported by the global dependability community. | $3.3M | Seed | Dec 16, 2024 |  |
| Dropzone AI | Dropzone AI’s platform delivers pre-trained autonomous AI security agents that work alongside human analysts on security operations teams. It handles the frontline work of investigating the mountain of alerts from security systems. Using cutting-edge LLMs, Dropzone’s agents perform end-to-end investigations mimicking the techniques of eliteanalysts and enable human analysts to focus on what matters the most to them and real threats. | $3.5M | Seed | Aug 08, 2023 |  |
| Abbey Labs | Abbey is a platform for security teams to automate and secure access to sensitive data. With Abbey, you can improve your security and compliance programs by automatically controlling and right-sizing permissions so the risks around unauthorized access is limited in the event of a breach. | $5.3M | Seed | Aug 01, 2023 |  |
| Blumira | Blumira's end-to-end platform offers both automated threat detection and response, enabling organizations of any size to more efficiently defend against cybersecurity threats in near real-time. It eases the burden of alert fatigue, the complexity of log management, and the lack of IT visibility. Blumira's cloud SIEM can be deployed inhours with broad integration coverage across cloud, endpoint protection, firewall, and identity providers including Office 365, G Suite, Crowdstrike, Okta, Palo Alto, Cisco FTD, and many others. | $15M | Series B | Jun 07, 2023 |  |
| SpecterOps | SpecterOps is a cybersecurity company that provides products, services, and training solutions to help enterprises defend against advanced attacks. They assist companies in shutting down attack vectors, evaluating and developing security operations programs, providing advanced adversary Tactics, Techniques, and Procedures (TTPs) training tostudents, and sponsoring several initiatives that benefit the industry as a whole. | $28.7M | Series A | Apr 18, 2023 |  |
| Push Security | Push Security is the secure enterprise browser extension for the AI era. Founded by red team and blue team experts, Push combines high-fidelity browser telemetry, real-time control, and autonomous agents to stop advanced attacks, secure AI usage, harden identities, and prevent data loss — all from your users’ existing browsers, no migrationrequired. | $15M | Series A | Mar 28, 2023 |  |
| Push Security | Push Security is the secure enterprise browser extension for the AI era. Founded by red team and blue team experts, Push combines high-fidelity browser telemetry, real-time control, and autonomous agents to stop advanced attacks, secure AI usage, harden identities, and prevent data loss — all from your users’ existing browsers, no migrationrequired. | $4M | Seed | Jul 19, 2022 |  |
| runZero, Inc | Rumble brings together the best of IT, security and networking technology to deliver amazing network discovery and asset inventory capabilities for modern enterprises. | $15M | Series A | Mar 14, 2022 |  |

10 of 14 investments shown.

## Co-investors
- [Decibel Partners](https://shizune.co/investors/profile/decibel-vc) — VC Fund, 5 deals together
- [IVP](https://shizune.co/investors/profile/institutional-venture-partners) — VC Fund, 4 deals together
- [Google Ventures](https://shizune.co/investors/profile/google-ventures) — VC Fund, 2 deals together
- [Haystack](https://shizune.co/investors/profile/haystack) — VC Fund, 2 deals together
- [Kleiner Perkins](https://shizune.co/investors/profile/kleiner-perkins-caufield-byers) — VC Fund, 2 deals together
- [Mercury Fund](https://shizune.co/investors/profile/mercury-fund) — VC Fund, 2 deals together

## About runZero, Inc

VC Fund · Austin, United States

Rumble brings together the best of IT, security and networking technology to deliver amazing network discovery and asset inventory capabilities for modern enterprises.

2 contacts available at runZero, Inc.

| Name | Title | Profile |
| --- | --- | --- |
| Jonathan Oberheide | Board Member | https://shizune.co/investors/profile/jon-oberheide |
| Jack Naglieri | Investor | — |

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## FAQ

### What does Jonathan Oberheide invest in?

Jonathan Oberheide invests primarily in Cyber Security, Information Technology and SaaS startups, most often at Seed and Series A stage. Most of the 14 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 Jonathan Oberheide?

Public channels for Jonathan Oberheide include LinkedIn, X (Twitter) and the website linked on this profile. 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 Jonathan Oberheide last invest?

The most recent investment recorded for Jonathan Oberheide closed in Oct 2025. Shizune tracks 14 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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