Startups that raised funding in May 2026
38 startups in Adamlead's directory raised funding in May 2026, $4.2B between the 38 that disclosed an amount. The biggest was Sierra at $950M (Venture). Series A was the most common round. Between them they list 107 open roles, and we hold 83 decision-maker contacts.
38
rounds
$4.2B
raised (disclosed)
107
open roles
83
contacts on file
By stage
By industry
By U.S. state
| # | Company | Raised | Stage | Industry | Location | Date |
|---|---|---|---|---|---|---|
| 1 |  Sierra | $950M | Venture | Software Development | San Francisco, California | May 4, 2026 |
| 2 |  Hark | $700M | Series A | Technology, Information and Internet | San Jose, California | May 21, 2026 |
| 3 |  Decart | $300M | Venture | Technology, Information and Internet | Palo Alto, California | May 20, 2026 |
| 4 |  Cowboy Space | $275M | Series B | Defense and Space Manufacturing | San Carlos, California | May 11, 2026 |
| 5 |  Exa | $250M | Series C | Software Development | San Francisco, California | May 22, 2026 |
| 6 |  Armada | $230M | Series B | Software Development | San Francisco, California | May 19, 2026 |
| 7 |  Mercury | $200M | Series D | Financial Services | San Francisco, California | May 21, 2026 |
| 8 |  OpenRouter (Acquired by Stripe) | $113M | Series B | Software Development | New York, New York | May 26, 2026 |
| 9 |  Corgi | $106M | Series B | Financial Services | San Francisco, California | May 28, 2026 |
| 10 |  Primer | $100M | Series C | Financial Services | London, England | May 20, 2026 |
| 11 |  Nourish | $100M | Series C | Hospitals and Health Care | New York, New York | May 19, 2026 |
| 12 |  Moment | $78M | Series C | Financial Services | New York, New York | May 19, 2026 |
| 13 |  BAMF Health | $75M | Series C | Hospitals and Health Care | Grand Rapids, Michigan | May 21, 2026 |
| 14 |  Fun | $72M | Series A | Software Development | New York, New York | May 1, 2026 |
| 15 |  Socket | $60M | Series C | Computer and Network Security | San Francisco, California | May 20, 2026 |
| 16 |  Inherent | $50M | Seed | Technology, Information and Internet | London, England | May 30, 2026 |
| 17 |  Monaco | $50M | Series B | Software Development | San Francisco, California | May 12, 2026 |
| 18 |  Vapi | $50M | Series B | Software Development | San Francisco, California | May 12, 2026 |
| 19 |  Pace | $46M | Series B | Software Development | New York, New York | May 27, 2026 |
| 20 |  Pivot | $40M | Series B | Software Development | New York, New York | May 21, 2026 |
| 21 |  Dust | $40M | Series B | Software Development | Paris, Île-de-France | May 18, 2026 |
| 22 |  Bunch | $35M | Series B | Financial Services | Berlin, Mitte | May 19, 2026 |
| 23 |  Judgment Labs | $32M | Series A | Software Development | Stanford, California | May 12, 2026 |
| 24 |  Catena Labs | $30M | Series A | Technology, Information and Internet | Boston, Massachusetts | May 26, 2026 |
| 25 |  Lithosquare | $25M | Seed | Mining | Paris, Paris | May 5, 2026 |
| 26 |  Ethos | $22.8M | Series A | Technology, Information and Internet | London, England | May 6, 2026 |
| 27 |  Roadrunner | $22M | Series A | Technology, Information and Internet | San Francisco, California | May 18, 2026 |
| 28 |  Nace AI | $21.5M | Seed | Software Development | San Francisco, California | May 5, 2026 |
| 29 |  Tensormesh | $20M | Venture | Software Development | San Francisco, California | May 27, 2026 |
| 30 |  Default | $20M | Series A | Software Development | New York, New York | May 27, 2026 |
| 31 |  Ocean | $20M | Series A | Computer and Network Security | New York, New York | May 19, 2026 |
| 32 |  Adfin | $18M | Series A | Financial Services | London, England | May 12, 2026 |
| 33 |  Optura | $17.5M | Series A | Software Development | Jefferson City, Missouri | May 14, 2026 |
| 34 |  Drafted | $16M | Seed | Technology, Information and Internet | San Francisco, California | May 29, 2026 |
| 35 |  White Circle | $11M | Seed | Technology, Information and Internet | Dover, Delaware | May 12, 2026 |
| 36 |  Adopt AI | $6M | Seed | Technology, Information and Internet | San Jose, California | May 13, 2026 |
| 37 |  Dessn | $6M | Seed | Software Development | New York, New York | May 6, 2026 |
| 38 |  Davis | $5.5M | Pre-Seed | Technology, Information and Internet | Paris, Paris | May 7, 2026 |
Weekly lists in May 2026
Frequently asked questions
How many startups raised funding in May 2026?
38 companies in Adamlead's directory have a round dated May 2026. The list grows as new rounds are reviewed, so recent months fill in over the following weeks.
How much did startups raise in May 2026?
$4.2B across the 38 rounds with a disclosed amount. Undisclosed rounds aren't estimated.
How can I contact these companies?
Every company links to its profile with its decision-makers. Start the free trial to reveal verified emails, or get each new round in a daily Google Sheet.
Ask AI about May 2026's rounds