# Zdenko Grajcar

> Zdenko Grajcar is a Series A investor backing Agriculture and Manufacturing. See 1 investment, round sizes, portfolio and contact details. Updated Aug 2026.

- Type: Angel Investor
- Location: Minneapolis, United States
- Total investments: 1
- Last investment: Oct 2013
- Lead investor: 100%
- Last updated: Aug 2026
- LinkedIn: https://www.linkedin.com/in/zgrajcar

Zdenko Grajcar is a Series A investor in Minneapolis focused on Agriculture and Manufacturing. Zdenko Grajcar, a physicist from Slovakia, is recognized as a pioneer in the LED lighting business. He holds a Masters Degree from Univerzita Komenskeho v Bratislave and earned a PhD. from the Google Academy.Over time, Zdenko has forged solid relationships with vendors, customers, and business leaders throughout North America, Asia and Europe.He has a remarkable ability to bring creative ideas to life and a reputation for demanding consistent quality and performance.Zdenko was the CEO of Lumificient Technologies, a company he founded and later sold to Nexxus Lighting where he served as Chief Technology officer until his departure in December of 2008.With a wealth of knowledge and experience and more ideas to revolutionize the way the world interfaces with LED lighting, Zdenko started Scientoid Technology, now called Once Innovations, in December of 2008. With a drive to out-perform every leading manufacturer in the industry, he has positioned the company as a principal contender in the solid-state lighting field.

## Contacts

5 contacts available for Zdenko Grajcar: 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/zdenko-grajcar?utm_source=investor_profile

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| Agriculture | 1 | 100% |
| Manufacturing | 1 | 100% |
| Sustainability | 1 | 100% |

## Investments

| Company | Description | Round size | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| Once Innovations | Once Innovations is a privately held corporation that manufactures highly differentiated LED lighting using a visionary approach to research and product development - from unique designs with proprietary technologies through final production and distribution. ONCE was founded in 2008 by current CTO, Zdenko Grajcar considered a pioneering rebel inLED technology for his remarkably unconventional thinking and relentless challenge to the industry status quo. The ONCE technology research, marketing, and product development campus is located in Plymouth, MN United States of America. | $5.3M | Series A | Oct 21, 2013 | https://www.once.lighting |

1 of 1 investments shown.

## Co-investors
- [Ag Ventures Alliance](https://shizune.co/investors/profile/ag-ventures-alliance) — VC Fund, 1 deal together
- [New Fashion Pork](https://shizune.co/investors/profile/newfashionpork) — VC Fund, 1 deal together

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## Featured in investor lists
- [Agriculture (agtech) Angel Investors in United States](https://shizune.co/investors/agriculture-agtech-angel-investors-united-states)
- [Agriculture (agtech) Angel Investors in United States](https://shizune.co/investors/agriculture-agtech-angel-investors-united-states)

## FAQ

### What does Zdenko Grajcar invest in?

Zdenko Grajcar invests primarily in Agriculture, Manufacturing and Sustainability 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 Zdenko Grajcar?

Public channels for Zdenko Grajcar 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 Zdenko Grajcar last invest?

The most recent investment recorded for Zdenko Grajcar closed in Oct 2013. 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 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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