QuestMark Partners

QuestMark Partners is a Baltimore-based expansion-stage venture capital firm that provides growth capital to exceptional management teams across the United States. Founded in 1998, the firm pursues venture and secondary investments in consumer, healthcare, and related technology sectors, including enterprise software, cloud software, mobile software, tech-enabled business services, security, financial technology, consumer internet, and healthcare technology. With more than $900 million in assets under management, QuestMark seeks differentiated, category-creating companies with strong commercial traction and the potential for long-term standalone leadership.

Michael Leidesdorff

Partner

Benjamin Schapiro

CEO

Past deals in New Hampshire

KeyMe

Series D in 2017
KeyMe is a technology company specializing in digital key management. Founded in 2012, it offers a mobile application that enables users to store, share, and duplicate physical keys using digital scans. KeyMe supports various key types and provides custom key designs and accessories. Its services are available through robotic kiosks located in over 2,500 retail locations across the U.S.

KeyMe

Series C in 2016
KeyMe is a technology company specializing in digital key management. Founded in 2012, it offers a mobile application that enables users to store, share, and duplicate physical keys using digital scans. KeyMe supports various key types and provides custom key designs and accessories. Its services are available through robotic kiosks located in over 2,500 retail locations across the U.S.

Vapotherm

Series C in 2015
Vapotherm, Inc. is a medical technology company specializing in the development and commercialization of proprietary Hi-VNI technology products designed to treat patients of all ages experiencing respiratory distress. Headquartered in Exeter, New Hampshire, the company offers a range of precision flow systems, including Precision Flow Hi-VNI, Precision Flow Plus, Precision Flow Classic, and Precision Flow Heliox, which deliver heated, humidified, and oxygenated air at high velocity through a small-bore nasal interface. Vapotherm also provides various companion products, such as the Vapotherm Transfer Unit for patient mobility, the Q50 compressor for compressed air, and aerosol solutions for medication delivery. Additionally, the company offers disposable products, including single-use nasal interfaces and Oxygen Assist Modules to help clinicians maintain target oxygen levels. Vapotherm generates revenue primarily through direct sales to hospitals in the United States and through distributors in select international markets. Founded in 1993, the company is committed to enhancing clinical outcomes and improving the quality of life for patients.

Vapotherm

Series C in 2015
Vapotherm, Inc. is a medical technology company specializing in the development and commercialization of proprietary Hi-VNI technology products designed to treat patients of all ages experiencing respiratory distress. Headquartered in Exeter, New Hampshire, the company offers a range of precision flow systems, including Precision Flow Hi-VNI, Precision Flow Plus, Precision Flow Classic, and Precision Flow Heliox, which deliver heated, humidified, and oxygenated air at high velocity through a small-bore nasal interface. Vapotherm also provides various companion products, such as the Vapotherm Transfer Unit for patient mobility, the Q50 compressor for compressed air, and aerosol solutions for medication delivery. Additionally, the company offers disposable products, including single-use nasal interfaces and Oxygen Assist Modules to help clinicians maintain target oxygen levels. Vapotherm generates revenue primarily through direct sales to hospitals in the United States and through distributors in select international markets. Founded in 1993, the company is committed to enhancing clinical outcomes and improving the quality of life for patients.

Vapotherm

Series B in 2014
Vapotherm, Inc. is a medical technology company specializing in the development and commercialization of proprietary Hi-VNI technology products designed to treat patients of all ages experiencing respiratory distress. Headquartered in Exeter, New Hampshire, the company offers a range of precision flow systems, including Precision Flow Hi-VNI, Precision Flow Plus, Precision Flow Classic, and Precision Flow Heliox, which deliver heated, humidified, and oxygenated air at high velocity through a small-bore nasal interface. Vapotherm also provides various companion products, such as the Vapotherm Transfer Unit for patient mobility, the Q50 compressor for compressed air, and aerosol solutions for medication delivery. Additionally, the company offers disposable products, including single-use nasal interfaces and Oxygen Assist Modules to help clinicians maintain target oxygen levels. Vapotherm generates revenue primarily through direct sales to hospitals in the United States and through distributors in select international markets. Founded in 1993, the company is committed to enhancing clinical outcomes and improving the quality of life for patients.

Vapotherm

Series A in 2013
Vapotherm, Inc. is a medical technology company specializing in the development and commercialization of proprietary Hi-VNI technology products designed to treat patients of all ages experiencing respiratory distress. Headquartered in Exeter, New Hampshire, the company offers a range of precision flow systems, including Precision Flow Hi-VNI, Precision Flow Plus, Precision Flow Classic, and Precision Flow Heliox, which deliver heated, humidified, and oxygenated air at high velocity through a small-bore nasal interface. Vapotherm also provides various companion products, such as the Vapotherm Transfer Unit for patient mobility, the Q50 compressor for compressed air, and aerosol solutions for medication delivery. Additionally, the company offers disposable products, including single-use nasal interfaces and Oxygen Assist Modules to help clinicians maintain target oxygen levels. Vapotherm generates revenue primarily through direct sales to hospitals in the United States and through distributors in select international markets. Founded in 1993, the company is committed to enhancing clinical outcomes and improving the quality of life for patients.

Vapotherm

Series F in 2008
Vapotherm, Inc. is a medical technology company specializing in the development and commercialization of proprietary Hi-VNI technology products designed to treat patients of all ages experiencing respiratory distress. Headquartered in Exeter, New Hampshire, the company offers a range of precision flow systems, including Precision Flow Hi-VNI, Precision Flow Plus, Precision Flow Classic, and Precision Flow Heliox, which deliver heated, humidified, and oxygenated air at high velocity through a small-bore nasal interface. Vapotherm also provides various companion products, such as the Vapotherm Transfer Unit for patient mobility, the Q50 compressor for compressed air, and aerosol solutions for medication delivery. Additionally, the company offers disposable products, including single-use nasal interfaces and Oxygen Assist Modules to help clinicians maintain target oxygen levels. Vapotherm generates revenue primarily through direct sales to hospitals in the United States and through distributors in select international markets. Founded in 1993, the company is committed to enhancing clinical outcomes and improving the quality of life for patients.

Vapotherm

Series E in 2007
Vapotherm, Inc. is a medical technology company specializing in the development and commercialization of proprietary Hi-VNI technology products designed to treat patients of all ages experiencing respiratory distress. Headquartered in Exeter, New Hampshire, the company offers a range of precision flow systems, including Precision Flow Hi-VNI, Precision Flow Plus, Precision Flow Classic, and Precision Flow Heliox, which deliver heated, humidified, and oxygenated air at high velocity through a small-bore nasal interface. Vapotherm also provides various companion products, such as the Vapotherm Transfer Unit for patient mobility, the Q50 compressor for compressed air, and aerosol solutions for medication delivery. Additionally, the company offers disposable products, including single-use nasal interfaces and Oxygen Assist Modules to help clinicians maintain target oxygen levels. Vapotherm generates revenue primarily through direct sales to hospitals in the United States and through distributors in select international markets. Founded in 1993, the company is committed to enhancing clinical outcomes and improving the quality of life for patients.

Vapotherm

Series D in 2006
Vapotherm, Inc. is a medical technology company specializing in the development and commercialization of proprietary Hi-VNI technology products designed to treat patients of all ages experiencing respiratory distress. Headquartered in Exeter, New Hampshire, the company offers a range of precision flow systems, including Precision Flow Hi-VNI, Precision Flow Plus, Precision Flow Classic, and Precision Flow Heliox, which deliver heated, humidified, and oxygenated air at high velocity through a small-bore nasal interface. Vapotherm also provides various companion products, such as the Vapotherm Transfer Unit for patient mobility, the Q50 compressor for compressed air, and aerosol solutions for medication delivery. Additionally, the company offers disposable products, including single-use nasal interfaces and Oxygen Assist Modules to help clinicians maintain target oxygen levels. Vapotherm generates revenue primarily through direct sales to hospitals in the United States and through distributors in select international markets. Founded in 1993, the company is committed to enhancing clinical outcomes and improving the quality of life for patients.

Vapotherm

Series C in 2003
Vapotherm, Inc. is a medical technology company specializing in the development and commercialization of proprietary Hi-VNI technology products designed to treat patients of all ages experiencing respiratory distress. Headquartered in Exeter, New Hampshire, the company offers a range of precision flow systems, including Precision Flow Hi-VNI, Precision Flow Plus, Precision Flow Classic, and Precision Flow Heliox, which deliver heated, humidified, and oxygenated air at high velocity through a small-bore nasal interface. Vapotherm also provides various companion products, such as the Vapotherm Transfer Unit for patient mobility, the Q50 compressor for compressed air, and aerosol solutions for medication delivery. Additionally, the company offers disposable products, including single-use nasal interfaces and Oxygen Assist Modules to help clinicians maintain target oxygen levels. Vapotherm generates revenue primarily through direct sales to hospitals in the United States and through distributors in select international markets. Founded in 1993, the company is committed to enhancing clinical outcomes and improving the quality of life for patients.
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