# Steven J. Grenfell

> Steven J. Grenfell is a Series D investor at Safeguard Scientifics backing Health Care. See 3 investments, check sizes, portfolio and contact details…

- Type: Angel Investor
- Fund: [Safeguard Scientifics](https://shizune.co/investors/profile/safeguard-scientifics)
- Location: Wayne, United States
- Total investments: 3
- Last investment: May 2018
- Lead investor: 67%
- Last updated: Oct 2026
- LinkedIn: https://www.linkedin.com/in/steve-grenfell-2465001

Steven J. Grenfell is a Series D investor at Safeguard Scientifics in Wayne focused on Health Care and Medical Device. Steven J. Grenfell - SVP of Operations @ Safeguard Scientifics

## Contacts

5 contacts available for Steven J. Grenfell: 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/steven-j-grenfell?utm_source=investor_profile

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| Health Care | 2 | 67% |
| Medical Device | 2 | 67% |
| Medical | 1 | 33% |
| mHealth | 1 | 33% |
| Genetics | 1 | 33% |

9 industries tracked in total.

### Stage

| Stage | Investments | Share |
| --- | --- | --- |
| Series D | 2 | 67% |
| Series A | 1 | 33% |

## Investments

| Company | Description | Amount | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| Propeller Health | Propeller Health is a mobile platform that offers sensors, mobile apps, analytics, and services to support respiratory health management. The HIPAA compliant platform stores users’ data in a cloud computing infrastructure.The Propeller sensor and mobile application help users learn more about and better manage their asthma, COPD, andrespiratory disease. The Propeller sensor attaches to users’ inhalers and wirelessly syncs with their smartphones. It tracks their triggers and symptoms and sends personalized feedback and education to their phones based on the symptoms. Users can see how often they use the medication, and set up medication reminders and alerts.Propeller community enables users to share their Propeller data with their physician and family members.Propeller Health is backed by Safeguard Scientifics, The Social+Capital Partnership, California HealthCare Foundation, and other investors.  The platform works with organizations such as Dignity Health, Wyckoff Heights Medical Center, Amerigroup Florida, and the City of Louisville. The system has been featured in The Economist, Washington Post, Fast Company, Wired, and Scientific American.Propeller Health has received TEDMED Innovation Showcase, White House Champion of Change, and Bluetooth Breakthrough Product awards.Propeller Health was launched by David Van Sickle, Greg Tracy, and Mark Gehring and its operations are based in Wisconsin, United States. | $20M | Series D | May 30, 2018 | http://www.propellerhealth.com |
| NovaSom | NovaSom, Inc. is a privately held diagnostic-service provider for home testing and evaluation of sleep-disordered breathing, which includes the diagnosis of obstructive sleep apnea (OSA). The company is a Medicare-approved Independent Diagnostic Testing Facility (IDTF) and is fully accredited as both an Ambulatory Care Sleep Diagnostic Center andas a Telehealth provider by The Joint Commission. The home testing system manufactured and distributed by NovaSom has FDA clearance for the diagnostic evaluation of OSA in adults. NovaSom has integrated their home sleep testing system into a cloud-based, collaborative patient management platform for physicians and payers.It is based in Glen Burnie, Maryland, the company was incorporated in 1992. |  | Series D | Jun 27, 2011 | http://www.novasom.com |
| Advantedge Healthcare Solutions | Advantedge Healthcare Solutions, Inc. designs and develops software for the healthcare industry. The company offers medical billing software. Additionally, it provides radiology, cardiology, anesthesia and pain management, neonatology, internal medicine, and multi specialty medical billing services. The company also offers revenue cycle managementservices to physicians and medical billing companies. It caters to hospitals and office based specialty physician practices. Advantedge Healthcare Solutions, Inc. was founded in 1999 and is based in Warren, New Jersey. |  | Series A | Nov 20, 2006 | http://www.ahsrcm.com |

3 of 3 investments shown.

## Co-investors
- [3M New Ventures](https://shizune.co/investors/profile/3m-new-ventures) — VC Fund, 1 deal together
- AptarGroup — VC Fund, 1 deal together
- [Hikma Ventures](https://shizune.co/investors/profile/hikma-ventures) — VC Fund, 1 deal together
- [Social Capital](https://shizune.co/investors/profile/social-capital) — VC Fund, 1 deal together
- [SR One](https://shizune.co/investors/profile/sr-one) — VC Fund, 1 deal together

## About Safeguard Scientifics

VC Fund · Radnor, United States

Safeguard Scientifics, Inc. (NYSE: SFE) has a distinguished track record of fostering innovation and building market leaders. For more than 60 years, Safeguard has been providing growth capital and operational support to entrepreneurs across an evolving spectrum of industries. Today, Safeguard is focused specifically on healthcare and technology.Safeguard is a proven partner for entrepreneurs looking to accelerate growth and build long-term value in their businesses. Investors in NYSE:SFE have a unique opportunity to tap into the high potential of Safeguard's early- and growth-stage partners companies.

4 contacts available at Safeguard Scientifics.

| Name | Title | Profile |
| --- | --- | --- |
| Gary Kurtzman | Senior Vice President and Managing Director, Healthcare | https://shizune.co/investors/profile/gary-kurtzman-md |
| Scott Snyder | Chief Technology and Innovation Officer | https://shizune.co/investors/profile/scott-snyder |
| Seth Zuckerman | Senior Associate, Healthcare | https://shizune.co/investors/profile/seth-zuckerman |
| Steven J. Grenfell | SVP of Operations | https://shizune.co/investors/profile/steven-j-grenfell |

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### Similar stage
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## FAQ

### What does Steven J. Grenfell invest in?

Steven J. Grenfell invests primarily in Health Care, Medical Device and Medical startups, most often at Series D and Series A stage. Most of the 3 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 Steven J. Grenfell?

Public channels for Steven J. Grenfell 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 Steven J. Grenfell last invest?

The most recent investment recorded for Steven J. Grenfell closed in May 2018. Shizune tracks 3 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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