| 22 | Maryland Technology Development Corporation | Columbia, MD |
| 19 | Draper Fisher Jurvetson | Menlo Park, CA |
| 17 | Tech Coast Angels | Laguna Hills, CA |
| 13 | New Enterprise Associates | Baltimore, MD |
| 12 | Khosla Ventures | Menlo Park, CA |
| 12 | Sequoia Capital | Menlo Park, CA |
| 11 | Village Ventures | Williamstown, MA |
| 10 | Austin Ventures | Austin, TX |
| 9 | Band of Angels | Menlo Park, CA |
| 9 | Omidyar Network | Redwood City, CA |
| 8 | Canaan Partners | Westport, CT |
| 8 | Foundation Capital | Menlo Park, CA |
| 8 | IllinoisVentures LLC | Chicago, IL |
| 8 | Intel Capital | Santa Clara, CA |
| 8 | JumpStart Inc. | Cleveland, OH |
| 8 | Mohr Davidow Ventures | Menlo Park, CA |
| 8 | Polaris Venture Partners LP | Waltham, MA |
| 7 | Atlas Venture | Waltham, MA |
| 7 | Ben Franklin Technology Partners Southeastern PA | Philadelphia, PA |
| 7 | Charles River Ventures | Waltham, MA |
| 7 | Draper Richards LP | San Francisco, CA |
| 7 | Hummer Winblad Venture Partners | San Francisco, CA |
| 7 | Venrock | New York City, NY |
| 6 | Advantage Capital Partners | New Orleans, LA |
| 6 | Bessemer Venture Partners | Larchmont, NY |
| 6 | Domain Associates LLC | Princeton, NJ |
| 6 | First Round Capital | West Conshohocken, PA |
| 6 | Kleiner Perkins Caufield & Byers | Menlo Park, CA |
| 6 | Lightspeed Venture Partners | Menlo Park, CA |
| 6 | Maryland DBED | Baltimore, MD |
| 6 | Morgenthaler Ventures | Menlo Park, CA |
| 6 | Prism Venture Partners | Westwood, MA |
| 6 | Spark Capital | Boston, MA |
| 6 | Sutter Hill Ventures | Palo Alto, CA |
| 6 | Trinity Ventures | Menlo Park, CA |
| 6 | U.S. Venture Partners | Menlo Park, CA |
| 5 | ARCH Venture Partners | Chicago, IL |
| 5 | Benchmark Capital | Menlo Park, CA |
| 5 | CMEA Ventures | San Francisco, CA |
| 5 | ComVentures | Palo Alto, CA |
| 5 | De Novo Ventures | Menlo Park, CA |
| 5 | DFJ Frontier | Santa Barbara, CA |
| 5 | Flagship Ventures | Cambridge, MA |
| 5 | General Catalyst Partners | Cambridge, MA |
| 5 | Greylock Partners | Waltham, MA |
| 5 | Highland Capital Partners LLC | Lexington, MA |
| 5 | Masthead Venture Partners | Cambridge, MA |
| 5 | Matrix Partners | Waltham, MA |
| 5 | New Jersey Technology Council | Mount Laurel, NJ |
| 5 | ONSET Ventures | Menlo Park, CA |
| 5 | Sevin Rosen Funds | Dallas, TX |
| 5 | Sigma Partners | Menlo Park, CA |
| 5 | Three Arch Partners | Portola Valley, CA |
| 5 | Versant Ventures | Menlo Park, CA |
| 4 | Accuitive Medical Ventures LLC | Duluth, GA |
| 4 | Alloy Ventures | Palo Alto, CA |
| 4 | ATA Ventures | Redwood City, CA |
| 4 | Avalon Ventures | La Jolla, CA |
| 4 | Battery Ventures LP | Waltham, MA |
| 4 | BlueRun Ventures | Menlo Park, CA |
| 4 | Boulder Ventures Ltd. | Owings Mills, MD |
| 4 | Clearstone Venture Partners | Santa Monica, CA |
| 4 | CommonAngels | Lexington, MA |
| 4 | DFJ Mercury Venture Partners | Houston, TX |
| 4 | El Dorado Ventures | Menlo Park, CA |
| 4 | Frazier Healthcare and Technology Ventures | Seattle, WA |
| 4 | HealthCare Ventures LLC | Princeton, NJ |
| 4 | Intersouth Partners | Durham, NC |
| 4 | InterWest Partners | Menlo Park, CA |
| 4 | Kodiak Venture Partners | Waltham, MA |
| 4 | Leapfrog Ventures | Menlo Park, CA |
| 4 | Mayfield Fund | Menlo Park, CA |
| 4 | Menlo Ventures | Menlo Park, CA |
| 4 | North Bridge Venture Partners | Waltham, MA |
| 4 | Novak Biddle Venture Partners LP | Bethesda, MD |
| 4 | Nth Power | San Francisco, CA |
| 4 | Oak Investment Partners | Westport, CT |
| 4 | Prolog Ventures LLC | St. Louis, MO |
| 4 | Redpoint Ventures | Menlo Park, CA |
| 4 | Silverton Foundation | Austin, TX |
| 4 | Split Rock Partners LLC | Minneapolis, MN |
| 4 | SV Life Sciences Advisers | Boston, MA |
| 4 | The Carlyle Group | Washington, DC |
| 4 | The Founders Fund | San Francisco, CA |
| 4 | Trident Capital | Palo Alto, CA |
| 4 | True Ventures | Palo Alto, CA |
| 4 | VantagePoint Venture Partners | San Bruno, CA |
| 3 | 3i (US) | Waltham, MA |
| 3 | Aberdare Ventures | San Francisco, CA |
| 3 | Acorn Campus Ventures | Cupertino, CA |
| 3 | Adams and Reese LLP | Baton Rouge, LA |
| 3 | Adams Street Partners LLC | Chicago, IL |
| 3 | Advanced Technology Ventures | Waltham, MA |
| 3 | Alta Partners | San Francisco, CA |
| 3 | Amplifier Venture Partners LP | McLean, VA |
| 3 | Arboretum Ventures | Ann Arbor, MI |
| 3 | Borealis Ventures | Hanover, NH |
| 3 | Burrill & Co. | San Francisco, CA |
| 3 | CEI Community Ventures Inc. | Portland, ME |
| 3 | Charter Life Sciences | Palo Alto, CA |
| 3 | CIT GAP Fund | Herndon, VA |
| 3 | Claremont Creek Ventures | Oakland, CA |
| 3 | Claritas Capital LLC | Nashville, TN |
| 3 | DCM - Doll Capital Management | Menlo Park, CA |
| 3 | Delphi Ventures | Menlo Park, CA |
| 3 | DFJ Element LP | Radnor, PA |
| 3 | Draper Triangle Ventures | Pittsburgh, PA |
| 3 | Enterprise Partners Venture Capital | La Jolla, CA |
| 3 | FA Technology Ventures | Albany, NY |
| 3 | FreshTracks Capital | Middlebury, VT |
| 3 | Globespan Capital Partners | Boston, MA |
| 3 | Granite Ventures LLC | San Francisco, CA |
| 3 | Harbinger Venture Management | Santa Clara, CA |
| 3 | IDG Ventures Boston | Boston, MA |
| 3 | Ignition Partners | Bellevue, WA |
| 3 | Inflexion Partners | Orlando, FL |
| 3 | Kegonsa Capital Partners LLC | Madison, WI |
| 3 | Keiretsu Forum | Lafayette, CA |
| 3 | Labrador Ventures | Palo Alto, CA |
| 3 | Madrona Venture Group | Seattle, WA |
| 3 | MultiChannel Ventures LLC | Orlando, FL |
| 3 | NewSpring Capital | Radnor, PA |
| 3 | Osage Investments | Bala Cynwyd, PA |
| 3 | OVP Venture Partners | Kirkland, WA |
| 3 | Point Judith Capital | Providence, RI |
| 3 | Prospect Venture Partners | Palo Alto, CA |
| 3 | Rustic Canyon Partners | Santa Monica, CA |
| 3 | Sanderling Ventures | San Mateo, CA |
| 3 | Skyline Ventures | Palo Alto, CA |
| 3 | Sofinnova Ventures | San Francisco, CA |
| 3 | Spray Venture Partners | Newton, MA |
| 3 | Stonehenge Capital Company | Baton Rouge, LA |
| 3 | Synergy Partners | Menlo Park, CA |
| 3 | Tallwood Venture Capital | Palo Alto, CA |
| 3 | Thomas McNerney & Partners LLC | Minneapolis, MN |
| 3 | Trans Cosmos USA | Bellevue, WA |
| 3 | Warburg Pincus LLC | New York City, NY |
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