US Startup Funding Rounds: May 11, 2026 – May 17, 2026
25 US venture rounds closed between May 11, 2026 and May 17, 2026, led by Cowboy Space Corporation at $275M (Series B).
Every round below is a named venture round by a US-headquartered company, sourced from SEC filings and verified announcements. Investment funds, IPOs, post-IPO placements and valuation-only reports are excluded.
| Company | Location | Amount | Round | Date | What they do |
|---|---|---|---|---|---|
| Cowboy Space Corporation | California | $275M | Series B | May 11, 2026 | Cowboy Space Corporation, formerly known as Aetherflux, is pioneering vertically integrated orbital infrastructure designed for the AI era. The compan… |
| Wispr | San Francisco, California | $260M | Series B | May 14, 2026 | Wispr is a private marketplace that lets agents “wispr” pre-market homes, leveraging the most powerful home database in history to unlock off-market o… |
| Varo | San Francisco, California | $123.9M | Series G+ | May 17, 2026 | Varo is a fintech company that became the first-ever all-digital nationally chartered consumer bank in the U.S. after obtaining its national bank char… |
| CREATE Medicines | Cambridge, Massachusetts | $122M | Series B | May 14, 2026 | CREATE Medicines is a clinical-stage biotech pioneering in vivo multi-immune programming. Its proprietary mRNA-LNP platform directly programs immune c… |
| Elliptic | London, New York | $120M | Series D | May 12, 2026 | Elliptic is the leader in digital asset decisioning. We have built the most comprehensive platform with unrivalled uptime and scalability for efficien… |
| Aalo | Austin, Texas | $100M | Series B | May 11, 2026 | Aalo Atomics is a US-based company focused on developing small nuclear reactors for clean energy production. The company aims to manufacture reactor s… |
| Havoc | Providence, Rhode Island | $100M | Series A | May 12, 2026 | Havoc is an all-domain collaborative autonomy company specializing in integrating autonomous systems across various domains. It focuses on delivering … |
| WIRobotics | Las Vegas, Nevada | $68M | Series B | May 15, 2026 | WIRobotics is a global robotics company that develops wearable and humanoid robot technologies designed to enhance human mobility and daily life. Foun… |
| Monaco | New York, New York | $50M | Series B | May 13, 2026 | Monaco is an AI-native sales platform for startups that automates the full revenue workflow from prospecting and demand generation to closing deals. B… |
| Cinder | Salt Lake City | $41M | Series B | May 13, 2026 | Cinder is an immersive and visually stunning MMO that's home to a deeply engaged social community whose members will be able to design, generate, and … |
| Sandstone | New York, New York | $39.6M | Seed | May 11, 2026 | Sandstone enables modern in-house teams to move at the speed of AI, deliver better outcomes, and create measurable business value. It unifies legal da… |
| LemFi | Oakland, CA | $32.4M | Series B | May 13, 2026 | By 2021, the company quickly expanded to the UK, and in parallel, broadened its reach by enabling 10 new African remittance corridors. The IMTO licens… |
| Judgment Labs | San Francisco, California | $32M | Seed | May 12, 2026 | Judgment Labs is an infrastructure company that enables AI-native teams to convert their production data into continuously improving agents. The compa… |
| iCOUNTER | Dallas, Texas | $30M | Series A | May 13, 2026 | iCOUNTER is a cyber risk intelligence provider enabling companies to counter targeted cyber-attacks through precision risk intelligence. Since 2020, i… |
| Heaviside Industries | Los Angeles, California | $28M | Series A | May 11, 2026 | Heaviside Industries specializes in the development and production of multi-domain autonomous precision munitions for U.S. and allied military forces.… |
| RoadRunner | Pittsburgh | $27M | Series A | May 12, 2026 | The company provides customized and sustainable materials management solutions, supported by technology and engineered to serve thousands of commercia… |
| GovWell | New York, New York | $25M | Series A | May 14, 2026 | GovWell is a New York-based provider of a govtech software platform that helps local authorities streamline municipal tasks. Since its founding in Apr… |
| CREW Carbon | New York, New York | $25M | Series A | May 14, 2026 | CREW Carbon is a climate tech startup based in Brooklyn, NY. The company focuses on removing biogenic CO2 produced in wastewater treatment facilities … |
| Wirestock | San Francisco, California | $23M | Series A | May 15, 2026 | Wirestock is a platform that empowers creators to monetize their skills while providing artificial intelligence with multimodal training data. The com… |
| Ciridae | San Francisco, California | $20M | Seed | May 11, 2026 | Ciridae is an AI transformation firm building operating systems for real economy businesses. The company embeds with clients to turn core workflows in… |
| Greenboard | New York, New York | $20M | Series A | May 12, 2026 | Greenboard, Inc. was founded in 2023 to build an all-in-one operating system for financial back-offices. Greenboard's founding team consists of Dave F… |
| Rivermark Medical | MILWAUKEE, WI | $20M | Series D | May 13, 2026 | Rivermark Medical develops a minimally-invasive treatment for Benign Prostatic Hyperplasia (BPH) that restores urinary function. |
| Outmarket | San Francisco, California | $17M | Series A | May 13, 2026 | Outmarket is the #1 AI platform for insurance, designed to empower agencies to scale their business without increasing headcount. The platform focuses… |
| Knit Health | San Francisco, California | $11.6M | Seed | May 12, 2026 | Knit Health is a health tech company spun out of UC Berkeley, focused on developing collective clinical intelligence through AI. It creates a Large Cl… |
| Urologic Health | Jersey City, New Jersey | $11M | Seed | May 14, 2026 | Urologic Health Inc. is a developer of non-invasive urodynamic and bladder function monitoring devices. The company has created the niu™ System, which… |
Frequently asked
Which US startups raised funding between May 11, 2026 and May 17, 2026?
25 US companies closed named venture rounds between May 11, 2026 and May 17, 2026, raising $1.62B in total. The largest were Cowboy Space Corporation ($275M, Series B), Wispr ($260M, Series B), Varo ($123.9M, Series G+). Each round below is sourced from SEC filings and verified announcements, and excludes investment funds, IPOs and post-IPO placements.
What was the largest funding round of the week of May 11, 2026?
Cowboy Space Corporation of California raised $275M in a Series B round announced May 11, 2026. Cowboy Space Corporation, formerly known as Aetherflux, is pioneering vertically integrated orbital infrastructure designed for the AI era. The company focuses It was the largest US venture round recorded in this window across 25 qualifying rounds.
How many US venture rounds closed this week?
25 named US venture rounds closed between May 11, 2026 and May 17, 2026, totalling $1.62B. This counts only rounds with a named series (Seed through Series G+) by US-headquartered operating companies. Investment funds raising vehicles, IPOs, post-IPO equity and valuation-only reports are excluded so the figures reflect genuine startup fundraising.
These are the rounds. Fundz gives you the people to call at each one — verified decision-makers matched to your market, the moment a round lands.
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