# John Isner

> John Isner is a seed investor in Greensboro backing Tea, Food Processing and Coffee. See 7 investments, check sizes, portfolio. Updated Aug 2026.

- Type: Angel Investor
- Location: Greensboro, United States
- Total investments: 7
- Last investment: Sep 2024
- Lead investor: 14%
- Last updated: Aug 2026

John Isner is a seed investor in Greensboro focused on Tea and Food Processing. John Robert Isner is an American professional tennis player.

## Round sizes

| Stage | Round size |
| --- | --- |
| Seed | $1.8M–$7M |

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| Tea | 2 | 29% |
| Food Processing | 2 | 29% |
| Coffee | 1 | 14% |
| Gaming | 1 | 14% |
| Retail | 1 | 14% |

18 industries tracked in total.

### Stage

| Stage | Investments | Share |
| --- | --- | --- |
| Seed | 2 | 29% |
| Funding Round | 2 | 29% |
| Series A | 1 | 14% |

## Investments

| Company | Description | Amount | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| Harbor | Harbor is an infant care technology company that focuses on transforming the way to take care of young children and their families. | $7M | Seed | Sep 19, 2024 |  |
| Harbor | Harbor is an infant care technology company that focuses on transforming the way to take care of young children and their families. | $3.7M | Seed | Feb 01, 2024 |  |
| Lucra Sports | Lucra Sports operates as a social-first sports gaming platform that sits uniquely at the intersection of sports gaming and fantasy sports. | $10.3M | Series A | Mar 30, 2022 |  |
| Lucra Sports | Lucra Sports operates as a social-first sports gaming platform that sits uniquely at the intersection of sports gaming and fantasy sports. |  | Seed | Oct 18, 2021 |  |
| Lucra Sports | Lucra Sports operates as a social-first sports gaming platform that sits uniquely at the intersection of sports gaming and fantasy sports. | $1.8M | Seed | May 04, 2021 |  |
| Runa | Runa provides solutions to increase conversions and maximize profits in real-time on online merchants' Websites. In 2008, more than $21 billion was spent on online marketing to drive traffic to online merchant Websites with mechanisms such as display ads, search optimization, lead generation, and affiliate marketing. However, conversion ratesof visitors to actual sales on the Website averaged only 2-3%. Over 97% of Website visitors dropped off without making a purchase. Runa allows online merchants to more than double the conversion rate of visitors. A one percentage point increase in conversions from visitors to sales among all the existing online merchants is equivalent to them spending approximately an additional $7 billion on online advertising at current efficiencies. |  |  | May 02, 2016 |  |
| RUNA | Runa specializes in the fields of manufacturing, distribution, and retail energy drinks. |  |  | May 02, 2016 |  |

7 of 7 investments shown.

## Co-investors
- [Raptor Group](https://shizune.co/investors/profile/raptorgroup) — VC Fund, 3 deals together
- [Capital Factory](https://shizune.co/investors/profile/capital-factory) — VC Fund, 2 deals together
- [Morrison Seger Venture Capital Partners](https://shizune.co/investors/profile/morrison-seger-venture-capital-partners) — VC Fund, 2 deals together
- [SeventySix Capital](https://shizune.co/investors/profile/seventysix-capital) — VC Fund, 2 deals together
- [Toy Ventures](https://shizune.co/investors/profile/toy-ventures) — VC Fund, 2 deals together
- [Trust Ventures](https://shizune.co/investors/profile/trust-ventures) — VC Fund, 2 deals together

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## FAQ

### What does John Isner invest in?

John Isner invests primarily in Tea, Food Processing and Coffee startups, most often at Seed and Funding Round stage. Most of the 7 investments tracked by Shizune back companies in United States. The Investment Focus section breaks down every industry, stage and country in the portfolio.

### What is John Isner's check size?

John Isner typically joins rounds of $1.8M–$7M at Seed. These ranges are 10th–90th percentile round sizes calculated from confirmed public funding rounds, so they are a realistic guide to the rounds John Isner participates in.

### When did John Isner last invest?

The most recent investment recorded for John Isner closed in Sep 2024. Shizune tracks 7 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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