Jacob Seid
Co-Founder and General Partner @ Ballistic Ventures
Orange, United States
Jacob Seid is a seed investor at Ballistic Ventures in Orange focused on Software and Artificial Intelligence. Jake Seid is based out of San Mateo, California and is the Co-Founder and General Partner of Ballistic Ventures. Jake previously worked at Ten-X as an Advisory Board Member. Jake Seid attended Massachusetts Institute of Technology. He has a unique combination of operating and investing experience, which supports founders as they grow theirbusinesses. Previously, as sole founder of Stone Bridge Ventures, 12 of his early-stage investments grew to become unicorn companies. Prior to that, he was president of TenX/Auction. With 800 people in his reporting org, he grew the real estate-focused transactional online marketplace to be the industry’s leading platform. The company was acquired for $1.6B. Jake started his tenure in venture capital as a member of the team that launched Lightspeed Venture Partners and became a key Managing Director helping drive the firm’s early growth. Early on, he was a Cisco product lead for the team that commercialized broadband technology, helping the group grow from startup to a $1B revenue run rate in 2 years and drove many important cybersecurity-focused innovations into his products. He holds an BS in Electrical Engineering and an M.Eng in Electrical Engineering and Computer Science from MIT. At MIT, he was awarded the Karly Taylor Compton Prize, the highest honor given to a student. He is a long-serving board member of the MIT Club of Northern California. In 2009, he was named a Young Global Leader by the World Economic Forum.
- Total investments:
- 36
- Last investment:
- Lead investor:
- 19%
Last updated:
For AI agents: llms.txt
Industries Jacob Seid invests in
Stages Jacob Seid invests in
Countries Jacob Seid invests in
Round sizes
Contacts
| Type | Contact | Validation |
|---|---|---|
| Work email | ||
| Personal email | ||
| Work phone | ||
| Personal phone | ||
| Socials |
Round size
- Seed
- $2.8M–$14M
- Series A
- $7M–$31M
- Series B
- $5M–$100M
Investment Focus
Industry
- Software 8 (22%)
- Artificial Intelligence 8 (22%)
- Cyber Security 7 (19%)
- Information Technology 7 (19%)
- Security 5 (14%)
Stage
- Seed 12 (33%)
- Series A 10 (28%)
- Series B 5 (14%)
- Series C 4 (11%)
- Series D 3 (8%)
Country
- United States 24 (67%)
- Israel 2 (6%)
- Saudi Arabia 1 (3%)
Investments
| Company | Description | Round | Links |
|---|---|---|---|
| Oligo is the industry's leading runtime security platform that solves today's toughest challenge: stopping attacks in real time in the AI era. Oligo transforms security from passive visibility to active protection across applications, cloud services, workloads, AI applications, and AI agents. By uncovering the deepest layers of whatactually runs in production, Oligo empowers customers to prioritize exploitable vulnerabilities, detect malicious behavior as it happens, and stop modern attacks in their tracks. | $60M / Series C / Aug 04, 2026 | ||
| Magnitude deploys an autonomous AI workforce of risk agents engineered to modernize third-party risk management for enterprises. The platform continuously assesses vendor vulnerabilities and governs external AI interactions across both direct partners and downstream Nth-party supply chain dependencies. By gathering evidence and automatingremediations according to specific enterprise rules, the system replaces static periodic compliance checks with a real-time defense mechanism against machine-scale supply chain attacks | $10M / Seed / Jun 16, 2026 | ||
| Native Security is a cloud security control plane for enterprises. It translates security outcomes into native cloud controls, simulates deployment impacts, and maintains alignment as environments change. The platform enforces security at the architectural level across multi-cloud setups. | $31M / Series A / Mar 17, 2026 | ||
| Noma is an security technology platform that helps to the secure management of data and AI lifecycles. | $100M / Series B / Jul 31, 2025 | ||
| Veza is the data security platform built on the power of authorization. We are building SaaS based security products in a dynamic and fast moving world of cybersecurity with ideas rooted in the era of privacy for the cloud. We are well-funded and backed by top-tier VCs and CEOs as angel investors. The founders are serial entrepreneurs who haveexperience in the full 0-to-1 journey with a successful exit with an acquisition. We are looking for founding engineers (summer interns also welcome!) with strong interests in security / cloud-native systems / identity / SaaS. | $108M / Series D / Apr 28, 2025 | ||
| Oligo is the industry's leading runtime security platform that solves today's toughest challenge: stopping attacks in real time in the AI era. Oligo transforms security from passive visibility to active protection across applications, cloud services, workloads, AI applications, and AI agents. By uncovering the deepest layers of whatactually runs in production, Oligo empowers customers to prioritize exploitable vulnerabilities, detect malicious behavior as it happens, and stop modern attacks in their tracks. | $50M / Series B / Jan 29, 2025 | ||
| Indigo is an AI-powered home transaction platform that offers residential property buying and selling services. | $8M / Seed / Jan 23, 2025 | ||
| Noma is an security technology platform that helps to the secure management of data and AI lifecycles. | $25M / Series A / Oct 31, 2024 | ||
| AuthMind is an identity security firm that identifies and prevents hidden identity risks through access neural network technologies. The company's platform takes an all-encompassing approach and provides continuous access to risk intelligence. | $8.5M / Seed / Jul 11, 2023 | ||
| Oligo is the industry's leading runtime security platform that solves today's toughest challenge: stopping attacks in real time in the AI era. Oligo transforms security from passive visibility to active protection across applications, cloud services, workloads, AI applications, and AI agents. By uncovering the deepest layers of whatactually runs in production, Oligo empowers customers to prioritize exploitable vulnerabilities, detect malicious behavior as it happens, and stop modern attacks in their tracks. | $20M / Series A / Feb 15, 2023 | ||
| See all 36 investments → | |||
Co-Investors
About Ballistic Ventures
Ballistic Ventures operates as a venture capital firm and offers the unparalleled benefit of an experienced, connected team that is focused on cybersecurity. They believe the essential step they can take today is to provide collective experience, network, and enthusiasm to the world's finest cybersecurity entrepreneurs.
Ballistic Ventures Contacts
| Name | Phone | Socials | |
|---|---|---|---|
Julie Tsai
CISO-in-Residence
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Phil Venables
Partner
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Barmak Meftah
Co-Founder & General Partner
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David Hahn
CISO Operating Partner
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David Schellhase
Entrepreneur in Residence
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FAQ
What does Jacob Seid invest in?
Jacob Seid invests primarily in Software, Artificial Intelligence and Cyber Security startups, most often at Seed and Series A stage. Most of the 36 investments tracked by Shizune back companies in United States. The Investment Focus section breaks down every industry, stage and country in the portfolio.
What round sizes does Jacob Seid invest in?
Jacob Seid typically joins rounds of $2.8M–$14M at Seed, $7M–$31M at Series A and $5M–$100M at Series B. These are whole funding-round sizes, not Jacob Seid's own check, which is rarely disclosed: the 10th–90th percentile of the confirmed public funding rounds Jacob Seid took part in.
How do I contact Jacob Seid?
Public channels for Jacob Seid 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 Jacob Seid last invest?
The most recent investment recorded for Jacob Seid closed in Aug 2026. Shizune tracks 36 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 Oct 2026 and is updated monthly. Spotted something off? Use the “Suggest an edit” link near the top of the page.
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