# John Martinson

> John Martinson is a seed investor at Edison Partners (New York) backing Software and Apps. See 5 investments, check sizes, portfolio. Updated Aug 2026.

- Type: Angel Investor
- Fund: [Edison Partners](https://shizune.co/investors/profile/edison-ventures)
- Location: New York, United States
- Total investments: 5
- Last investment: Nov 2022
- Lead investor: 20%
- Last updated: Aug 2026
- LinkedIn: https://www.linkedin.com/in/john-martinson-19719916

John Martinson is a Managing Partner at Edison Ventures. He was a Principal at InnoVen Group. He attended Purdue University.

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| Software | 2 | 40% |
| Apps | 1 | 20% |
| SaaS | 1 | 20% |
| Medical | 1 | 20% |
| Internet | 1 | 20% |

16 industries tracked in total.

### Stage

| Stage | Investments | Share |
| --- | --- | --- |
| Seed | 3 | 60% |
| Series B | 1 | 20% |

## Investments

| Company | Description | Amount | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| HeyKiddo | HeyKiddo is a suite of tech-based tools designed to help parents and caregivers develop leadership, social and emotional skills in their kiddos. | $400K | Seed | Nov 18, 2022 |  |
| ClassTag | The free ClassTag service transforms the way teachers connect with parents, allowing them to save time and focus on classroom education and activities rather than preparing and distributing parent notes and communications. With ClassTag, teachers can reach parents in over 50 languages through any channel including online, via email or text message,and even paper printouts. The cloud-based ClassTag platform inspires and rewards parent engagement with ClassTag Rewards, full of classroom supplies and learning products for the classrooms. | $3.6M | Seed | Jun 08, 2020 |  |
| ClassTag | The free ClassTag service transforms the way teachers connect with parents, allowing them to save time and focus on classroom education and activities rather than preparing and distributing parent notes and communications. With ClassTag, teachers can reach parents in over 50 languages through any channel including online, via email or text message,and even paper printouts. The cloud-based ClassTag platform inspires and rewards parent engagement with ClassTag Rewards, full of classroom supplies and learning products for the classrooms. | $5M | Seed | Feb 18, 2020 |  |
| d2i | formerly Known as Emergency Medicine Business Intelligence (EMBI). d2i is a unique combination of on-premise, On-demand, web-based, SAAS Dashboards and reports and analytic support services for Emergency Departments, as well as other clinical departments. They formed d2i because they understand the ED’s unmet need and demand for timely, relevant,and quality information. Their clients use their solution to increase revenues, manage patient safety and risk, and improve departmental and individual performance. They have the data. What we bring to the table are the tools and expertise necessary to turn that data into intuitive, interactive and actionable information. |  | Series B | Jan 09, 2017 |  |
| STRATIS IoT | STRATIS deployed in 1 in 5 new US Multifamily Developments while establishing offices in UK/EU.STRATIS became the sole provider to Google Nest Smart Thermostat Fleet Management Platform and Lutron Lighting Systems for multifamily and student housing.STRATIS earned a National Renewable Energy Lab/Wells Fargo grant to create digitaltwin technology for energy metering and monitoring efficiency forecasting in multifamily and student housing.And STRATIS doubled its revenue for the seventh year in a row, leading to 6th place on Best Companies in America by Entrepreneur Magazine and a 148 place audited acceleration on the INC 5000 to #740 fastest growing company in America, as well as 5th fastest growing company in Greater Philadelphia according to The Philadelphia Inquirer and the Philadelphia Business Journal.STRATIS is the most groundbreaking and pioneering Internet of Things (IoT) Software Platform in the world. STRATIS enables smart apartments and intelligent buildings and is the first and only software platform of its kind built for the complexities of multifamily and student housing. STRATIS’ mission is to increase energy and resource efficiencies and reduce the carbon footprint of commercial residential buildings around the world.To do this, STRATIS enables smart devices like smart sensors, light switches and outlets, smart thermostats, and HVAC equipment, smart water meters and heaters, smart load centers, and more, to be connected on one collaborative dashboard and mobile application, so that Property Managers and their Residents can automate energy and water savings, without reducing comfort.Since re-launch in 2015, STRATIS has installed in over 350,000 apartments across the U.S. and has launched in Japan, the UK, EU, and China. STRATIS now serves hospitality, retail, small to mid-size commercial, and innovative agriculture, as well. |  | Seed | Oct 01, 2016 |  |

5 of 5 investments shown.

## Co-investors
- [Contour Venture Partners](https://shizune.co/investors/profile/contour-ventures) — VC Fund, 2 deals together
- [Founder Collective](https://shizune.co/investors/profile/founder-collective) — VC Fund, 2 deals together
- [nvp capital](https://shizune.co/investors/profile/newark-venture-partners) — VC Fund, 2 deals together
- [nvp capital](https://shizune.co/investors/profile/nvpcap) — VC Fund, 2 deals together
- [SmartHub](https://shizune.co/investors/profile/smarthub-2) — VC Fund, 2 deals together
- [TMT Investments](https://shizune.co/investors/profile/tmt-investments) — VC Fund, 2 deals together

## About Edison Partners

VC Fund · Princeton, United States

Edison Partners assist their executive teams to grow and scale their companies. The firm’s investment team brings more than 275 years of combined investing and operating experience to each investment. Through a unique combination of growth capital and the Edison Edge platform, consisting of operating centers of excellence, executive educationprograms, and the Edison Director Network, the firm employs a truly integrated approach to accelerating growth and creating value for businesses. With experts in enterprise solutions, financial technology and healthcare IT, Edison targets high-growth companies located outside Silicon Valley with $10 million to $30 million in revenue. Investments also include buyouts, recapitalizations, spinouts, and secondary stock purchases. Its active portfolio has created aggregated market value exceeding $10 billion. Today, the firm manages $1.6 billion in assets.

5 contacts available at Edison Partners.

| Name | Title | Profile |
| --- | --- | --- |
| Christopher Sugden | Managing Partner | https://shizune.co/investors/profile/chris-sugden |
| Gregg Michaelson | General and Operating Partner | https://shizune.co/investors/profile/gregg-michaelson |
| Jennifer Lee | Partner | https://shizune.co/investors/profile/jennifer-lee-6 |
| Joe Allegra | General Partner | https://shizune.co/investors/profile/joe-allegra |
| John Martinson | Managing Partner | https://shizune.co/investors/profile/john-martinson |

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## FAQ

### What does John Martinson invest in?

John Martinson invests primarily in Software, Apps and SaaS startups, most often at Seed and Series B stage. Most of the 5 investments tracked by Shizune back companies in United States. The Investment Focus section breaks down every industry, stage and country in the portfolio.

### When did John Martinson last invest?

The most recent investment recorded for John Martinson closed in Nov 2022. Shizune tracks 5 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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