QuestMark Partners is an expansion-stage venture capital firm based in Baltimore, Maryland, providing growth capital of $5-15 million to exceptional management teams building market-leading or market-creating companies across the US.
Average disclosed round size is $28.2M (across 38 rounds with reported amounts).
Portfolio
26
Fund Size
—
Top Stage
Unknown
Last 12 Mo
0
Team
BS
Ben Schapiro
Chairman & CEO / Partner
BM
Brian Matthews
Partner
Portfolio Breakdown
Stage Distribution
Sector Distribution
Investment Activity
DealsAvg Round Size
Portfolio
41 investments
| Company | Round | Amount | Date |
|---|---|---|---|
 Adara | Series C | $23M | Jan 2025 |
 Airship | Series F | $25M | Jun 2018 |
 Urban Airship | Series F | $25M | Jun 2018 |
| Airship | Series F | — | Jan 2018 |
| Urban Airship | Series F | $25M | Jan 2018 |
 KeyMe | Series D | $25M | Sep 2017 |
 Xant | Growth | — | Jan 2017 |
| KeyMe | Series C | $15M | Sep 2016 |
 Vapotherm | Unknown | $30M | Jan 2016 |
 Vapotherm | Ipo | $56M | Jan 2016 |
| DDigabit | Series B | $9M | May 2015 |
| Urban Airship | Series D | $21M | Jan 2015 |
| Airship | Series D | $46M | Jan 2015 |
| Airship | Series D | $12.1M | Oct 2014 |
| VVapotherm, Inc. | Series B | $24.2M | Feb 2014 |
| UuTest (Applause) | Series E | $43M | Jan 2014 |
 Guavus | Growth | $20M | Jan 2014 |
| Vapotherm | Unknown | $24M | Jan 2014 |
| IInsideSales | Series C | $100M | Jan 2014 |
 Applause | Series E | $43M | Jan 2014 |
| DDigabit | Series A | $3M | Jul 2013 |
| Urban Airship | Series B | $25M | Feb 2013 |
| Vapotherm | Unknown | $29M | Jan 2013 |
| Vapotherm | Unknown | $29M | Jan 2013 |
 Vidyo | Series D | $22.5M | May 2012 |
Page 1 of 2
Top Co-Investors
August Capital12 shared
Salesforce9 shared
Intel Capital8 shared
True Ventures8 shared
Morgenthaler Ventures8 shared
Cross Creek8 shared
Verizon Ventures7 shared
Kaiser Permanente Ventures6 shared
Battery Ventures3 shared
Verizon3 shared
The Goldman Sachs Group, Inc.3 shared
Scale Venture Partners3 shared
Longworth Venture Partners3 shared
Adage Capital Management3 shared
Gilde Healthcare3 shared
Domain Associates3 shared
InterWest Partners3 shared
Canaan Partners3 shared
White Star Capital2 shared
Comcast Corporation2 shared
Last updated: 7 October 2026