Startups in Watertown
Updated 23 Oct 2026
43
Startups
43
Rows shown
166,525
All startups
43 rows
| # | Company | City | Stage | Last round | Date | Total raised |
|---|---|---|---|---|---|---|
| 1 | Orna Therapeutics | Watertown | Series B | Series B | 2022-08-16 | $321.0M |
| 2 | Treeline Biosciences | Watertown | Series A | Series A | 2025-09-03 | $1.1B |
| 3 | Triveni Bio | Watertown | Series C | Series C | 2026-06-17 | $272.0M |
| 4 | Seismic Therapeutic | Watertown | Series B | Series B | 2024-09-12 | $247.0M |
| 5 | Multitude Insights | Watertown | Series A | Series A | 2026-02-27 | $10.0M |
| 6 | Diagonal Therapeutics | Watertown | Series B | Series B | 2026-01-08 | $253.0M |
| 7 | Tutor Intelligence | Watertown | Series A | Series A | 2025-12-01 | $78.6M |
| 8 | Parallel Bio | Watertown | Series A | Series A | 2025-06-11 | $25.6M |
| 9 | Zus Health | Watertown | Series A | Series A | 2023-03-16 | $74.0M |
| 10 | Portal | Watertown | Seed | Seed | 2026-06-18 | $25.7M |
| 11 | Lyndra Therapeutics | Watertown | Series D+ | Series E | 2023-12-21 | $284.6M |
| 12 | Psivant Therapeutics | Watertown | Series A | Series A | 2025-12-10 | $47.5M |
| 13 | Corner Therapeutics | Watertown | Series A | Series A | 2024-04-18 | $58.5M |
| 14 | Cone ai | Watertown | Seed | Seed | 2026-10-06 | $970K |
| 15 | Tome Biosciences | Watertown | Series A | Series A | 2023-12-12 | $213.0M |
| 16 | Nido Biosciences | Watertown | Series B | Series B | 2023-05-15 | $109.0M |
| 17 | Hyperion Biosystems | Watertown | Series C | Series C | 2025-03-01 | |
| 18 | Platelet BioGenesis | Watertown | Series B | Series B | 2021-11-04 | $132.1M |
| 19 | Extrasense Technologies | Watertown | Pre-seed | Pre-seed | 2024-12-01 | $480K |
| 20 | Windgap Medical | Watertown | Series B | Series B | 2021-09-10 | $64.2M |
| 21 | Larkspur Biosciences | Watertown | Series A | Series A | 2023-05-23 | $35.5M |
| 22 | Mariana Oncology | Watertown | Series B | Series B | 2023-09-07 | $250.0M |
| 23 | Progentos Therapeutics | Watertown | Series A | Series A | 2024-05-14 | $65.0M |
| 24 | Arranta Bio | Watertown | Series B | Series B | 2021-03-08 | $82.0M |
| 25 | Respiratory Motion | Watertown | Series D+ | Series D | 2019-05-01 | $33.5M |
| 26 | ZWI Therapeutics, Inc. | Watertown | Series A | Series A | 2024-01-24 | $20.0M |
| 27 | NOORAI | Watertown | Pre-seed | Pre-seed | 2024-11-01 | $1.1M |
| 28 | PathCision Medicine | Watertown | Seed | Seed | 2024-02-20 | $1.9M |
| 29 | BERKM | Watertown | Seed | Seed | 2024-08-29 | |
| 30 | Paretor | Watertown | Seed | Seed | 2025-11-03 | $255K |
| 31 | Elastro | Watertown | Pre-seed | Pre-seed | 2024-08-15 | $2.3M |
| 32 | Ophthalmic Therapeutic Innovation | Watertown | Seed | Seed | 2025-12-02 | $100K |
| 33 | Retex | Watertown | Seed | Seed | 2024-01-01 | |
| 34 | Stellular Bio | Watertown | Series A | Series A | 2026-01-28 | |
| 35 | Digital Biology | Watertown | Seed | Seed | 2024-01-01 | |
| 36 | Communispace | Watertown | Series A | Series A | 2000-07-26 | $9.6M |
| 37 | ArcStream Solutions | Watertown | Series B | Series B | 2003-03-26 | $9.0M |
| 38 | m-Qube | Watertown | Series D+ | Series D | 2005-08-15 | $42.4M |
| 39 | Syndexa Pharmaceuticals | Watertown | Series B | Series B | 2012-01-05 | $23.5M |
| 40 | Interactive Motion Technologies | Watertown | Seed | Seed | 2011-04-28 | |
| 41 | Pintex Pharmaceuticals | Watertown | Series B | Series B | 2002-12-24 | |
| 42 | Inka.net | Watertown | Series A | Series A | 2000-05-02 | |
| 43 | Olivo Laboratories LLC | Watertown | Seed | Seed | 2016-01-01 |
Table 1. Startups in Watertown, by total raised. Source: FundingWatcher. Data as of 23 October 2026. Base: 43.
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Cite: FundingWatcher, 43 startups, 23 October 2026. https://fundingwatcher.com/startups/in/watertown-massachusetts/