American Superconductor CORP | Ayer | 100–499 | ● ACTIVE |
Covaris, LLC | Woburn | — | ● ACTIVE |
| CRCpi Radant Technologies Division INC. | Stow | 20–99 | ● ACTIVE |
Nyobolt INC | Bedford | 20–99 | ● ACTIVE |
24m Technologies, INC | Cambridge | — | ● ACTIVE |
Boston Materials, INC. | Billerica | — | ● ACTIVE |
Diversified Technologies, INC. | Bedford | 100–499 | ● ACTIVE |
Nanoramic, INC. | Woburn | 20–99 | ● ACTIVE |
Schleifring North America, LLC | Chelmsford | — | ● ACTIVE |
Socomec, INC. | Watertown | 100–499 | ● ACTIVE |
Xenon CORP | Wilmington | — | ● ACTIVE |
1854 Motors, INC. | Framingham | — | ● ACTIVE |
Alsym Energy, INC | Malden | — | ● ACTIVE |
Artisan Power LLC | Natick | — | ● ACTIVE |
Behlke Power Electronics LLC | Billerica | — | ● ACTIVE |
Bk Medical Holding Company, INC. | Burlington | — | ● ACTIVE |
Cielo Up LLC | Framingham | — | ● ACTIVE |
Control Resources, INC. | Acton | — | ● ACTIVE |
| DADiamond Antenna & Microwave Corporation | Littleton | — | ● ACTIVE |
Eflion Power, INC. | Framingham | — | ● ACTIVE |
Elementium Materials, INC. | Somerville | — | ● ACTIVE |
Epsilon Advanced Materials INC. | Lexington | — | ● ACTIVE |
Linden Photonics, INC. | Westford | — | ● ACTIVE |
Powerproducts Systems LLC | Wakefield | — | ● ACTIVE |
Schaefer Electronics, INC. | Hopkinton | — | ● ACTIVE |
Static Clean International, INC | N. Billerica | — | ● ACTIVE |
| SISuns International LLC | Chelmsford | — | ● ACTIVE |
Vecarius INC | Somerville | — | ● ACTIVE |
Veir INC | Woburn | — | ● ACTIVE |
| CRCpi Radant Technologies Division INC | Hudson | — | ◐ LIKELY ACTIVE |
| DUDiamond USA INC. | North Billerica | — | ◐ LIKELY ACTIVE |
Novatio Engineering, INC. | Waltham | — | ◐ LIKELY ACTIVE |
| CICristek Interconnects, LLC | North Billerica | — | ◐ LIKELY ACTIVE |
| DSDielectric Sciences, INC. | Chelmsford | — | ◐ LIKELY ACTIVE |
| EEEvoloh East | Lowell | 20–99 | ◐ LIKELY ACTIVE |
| PPPlug Power Concord Electrolyzers | Concord | 20–99 | ◐ LIKELY ACTIVE |
| SESolid Energy Systems INC | Woburn | 1–19 | ◐ LIKELY ACTIVE |
| AAmbri | Marlborough | — | ◇ UNVERIFIED |
| AAnalogic | Wakefield | — | ◇ UNVERIFIED |
| HMHudson Mill LLC | Hudson | — | ◇ UNVERIFIED |
| LCLargo Clean Energy | Wilmington | — | ◇ UNVERIFIED |
| LPLee Products Company | Everett | — | ◇ UNVERIFIED |
| PTPiconics-well Treatment Unit | Tyngsborough | — | ◇ UNVERIFIED |
| TWTwenty Wayland LLC | Wayland | — | ◇ UNVERIFIED |
| BGBlue Graphite INC. | Framingham | — | ◐ LIKELY ACTIVE |
| CMCircadian Management, INC. | Stoneham | — | ◐ LIKELY ACTIVE |
| GGGsr Global CORP | Woburn | — | ◐ LIKELY ACTIVE |
| IBIntrepid Battery LLC | Waltham | — | ◐ LIKELY ACTIVE |
| ICiRobot Corporation | Bedford | 500+ | ◐ LIKELY ACTIVE |
| LLittleton | Littleton | 1–19 | ◐ LIKELY ACTIVE |