# Larry Kestelman

> Larry Kestelman is a Series A investor at Oxygen Ventures backing Security. See 1 investment, round sizes, portfolio and contact details. Updated Nov 2026.

- Type: Angel Investor
- Fund: [Oxygen Ventures](https://shizune.co/investors/profile/oxygen-ventures)
- Total investments: 1
- Last investment: Feb 2014
- Lead investor: 100%
- Last updated: Nov 2026
- LinkedIn: https://www.linkedin.com/in/larry-kestelman-551510163

Larry Kestelman is a self-proclaimed serial entrepreneur whose limitless enthusiasm for business has bred a winning culture throughout the expanding portfolio of companies over which he presides. His passion for business has reached the sporting world in the form of ownership of the Melbourne United Basketball team. Having supported the club for more than two decades, he has helped achieve escalating membership numbers and been instrumental in taking the game to bigger venues in front of capacity crowds.

## Contacts

5 contacts available for Larry Kestelman: 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/larry-kestelman?utm_source=investor_profile

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| Security | 1 | 100% |
| Software | 1 | 100% |
| Analytics | 1 | 100% |
| Cloud Computing | 1 | 100% |
| Network Security | 1 | 100% |

7 industries tracked in total.

## Investments

| Company | Description | Round size | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| Saisei | Saisei is revolutionizing network analysis and control for the new challenges that Mobility, Cloud, SDN and the Internet of Things are bringing to networks today. Its massively scalable, real-time Network Performance Enforcement software solutions provide the speed and smarts needed to analyze and enforce policy on the millions of applications,users, and devices populating networks today. For the first time, enterprises and service providers can use their full network bandwidth knowing that unexpected traffic surges are automatically accommodated and all user traffic will get through even the busiest of network links with no dropped sessions, resulting in dramatic savings, accelerated revenue growth and a great user experience. For more information, visit www.saisei.com. | $5.6M | Series A | Feb 24, 2014 | http://www.saisei.com/ |

1 of 1 investments shown.

## About Oxygen Ventures

VC Fund · Melbourne, Australia

At Oxygen Ventures we source, build and invest in scalable digital enterprises - taking groundbreaking companies from concept to reality. The crucial insight we've garnered from 20 years of experience is understanding that value is created through rapid go-to-market strategies combined with process and operational excellence. That acumen is the key to our development and the engine behind every new investment. Our hands-on approach is where we differ from traditional venture capital firms. An essential element of our approach, and a distinct competitive advantage, is that we underpin the entire value chain - facilitating higher returns through deep involvement, smart strategy and comprehensive support. Operating out of Melbourne: a mecca of innovation, talent and energy - we're always looking for founders with innovative, game changing solutions.

2 contacts available at Oxygen Ventures.

| Name | Title | Profile |
| --- | --- | --- |
| Ilya Frolov | Investment Director | https://shizune.co/investors/profile/ilya-frolov |
| Larry Kestelman | Founder and Director | https://shizune.co/investors/profile/larry-kestelman |

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## FAQ

### What does Larry Kestelman invest in?

Larry Kestelman invests primarily in Security, Software and Analytics startups, most often at Series A stage. Most of the 1 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 Larry Kestelman?

Public channels for Larry Kestelman include LinkedIn. 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 Larry Kestelman last invest?

The most recent investment recorded for Larry Kestelman closed in Feb 2014. Shizune tracks 1 investment 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 Nov 2026 and is updated monthly. Spotted something off? Use the “Suggest an edit” link near the top of the page.

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