US Startup Funding Rounds: September 14, 2026 – September 20, 2026
25 US venture rounds closed between September 14, 2026 and September 20, 2026, led by Angle Health at $591.5M (Series C).
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 |
|---|---|---|---|---|---|
| Angle Health | San Francisco, California | $591.5M | Series C | September 18, 2026 | Angle Health democratizes access to modern healthcare services by unifying today's fragmented healthcare benefits ecosystem into one core coverage and… |
| Impulse Space | Redondo Beach, California | $308M | Series D | September 16, 2026 | Impulse Space, the in-space transportation company founded by Tom Mueller, is opening access beyond Low Earth Orbit (LEO) with its fleet of in-space t… |
| Ridgeline | Incline Village, Nevada | $250M | Series E | September 16, 2026 | Ridgeline is the industry cloud platform for investment management. It was founded by visionary entrepreneur Dave Duffield (co-founder of both PeopleS… |
| Mazama Energy | Bend, Oregon | $135M | Series B | September 18, 2026 | Mazama Energy is a geothermal operator and development company dedicated to advancing technologies and methods for extracting heat from superhot rocks… |
| Sling Therapeutics | Ann Arbor | $123M | Series C | September 16, 2026 | Sling Therapeutics is a clinical-stage biopharmaceutical company focused on developing an oral small molecule therapy for the treatment of thyroid eye… |
| CADDi | Chicago, Illinois | $114M | Series D | September 15, 2026 | CADDi is an AI Data Platform on a mission to democratize your drawings and supply chain data. Our primary product offering in the United States, CADDi… |
| Circle Pharma | South San Francisco, California | $92.5M | Series E | September 16, 2026 | Circle Pharma is a biotechnology company creating bioavailable macrocyclic peptide therapeutics that target protein-protein interactions. |
| Wealth.com | Phoenix | $65M | Series B | September 14, 2026 | wealth.com is the industry’s leading estate planning platform, empowering 500+ wealth management firms to modernize the delivery of estate planning gu… |
| Nuance Labs | Seattle, Washington | $50M | Series A | September 14, 2026 | Nuance Labs is a Seattle-based AI research lab founded by former Apple PhD researchers developing a full-duplex foundation model for human conversatio… |
| Raindrop | San Francisco, California | $50M | Series A | September 17, 2026 | Raindrop is a monitoring platform designed specifically for AI agents. It addresses the complexities of AI agent failures by providing customized moni… |
| Daytona | New York, New York | $48M | Series B | September 17, 2026 | Daytona provides a secure, scalable infrastructure for executing AI-generated code. Our platform delivers instant environment creation, complete isola… |
| Luzern Risk | New York, New York | $45M | Series B | September 17, 2026 | Luzern Risk is the first captive insurance platform purpose-built for the mid-market. Combining decades of insurance expertise with modern technology,… |
| BackOps.ai | San Francisco, California | $42M | Series B | September 16, 2026 | BackOps.ai is a provider of an AI-driven platform designed to automate supply chain logistics. The company enables supply chain customers to integrate… |
| Noetive | San Francisco, California | $41M | Seed | September 16, 2026 | Noetive is an AI NeoLab that specializes in operational technology, aiming to build the intelligence of record for the physical economy. It focuses on… |
| Artificial Intelligence Underwriting Company | San Francisco, California | $40M | Series A | September 15, 2026 | The Artificial Intelligence Underwriting Company (AIUC) focuses on providing insurance coverage and rigorous safety standards to help enterprises depl… |
| TypeSafe AI | San Francisco, California | $40M | Seed | September 15, 2026 | TypeSafe AI is a frontier AI lab focused on building machine-native, composable AI. Founded by former OpenAI researcher Diogo Almeida and his team, th… |
| ReEmerge | Minnesota | $37M | Series A | September 15, 2026 | ReEmerge, Inc. is a private MedTech company that focuses on innovating new ways to address cognitive impairments, particularly caused by traumatic bra… |
| Altay Therapeutics | San Carlos, California | $37M | Series A | September 17, 2026 | — |
| Comp AI | San Francisco, California | $34M | Series A | September 17, 2026 | Comp AI is an emerging player in the compliance automation space, focused on transforming how companies achieve compliance with critical frameworks li… |
| Adaptive Real Estate | NEW YORK, New York | $30M | Series B | September 17, 2026 | Adaptive is on a mission to bring financial clarity to the construction industry through advanced automation and AI. By eliminating back-office bottle… |
| Hanover Park | New York, New York | $27M | Series A | September 17, 2026 | Hanover Park is a NYC-based provider of an AI-native fund administrator service for private equity and venture capital. The company is developing a pl… |
| Composio | San Francisco, California | $25M | Series A | September 14, 2026 | Composio provides the learning infrastructure that enables AI agents to improve through experience. By creating a shared skill layer that captures and… |
| One Footprint | NEW YORK, New York | $25M | Series B | September 16, 2026 | Footprint is an onboarding platform that solves KYC, Security, Auth, and Fraud with five lines of code. By utilizing novel technologies such as nitro … |
| Atolio | Denver, Colorado | $24M | Series A | September 14, 2026 | Atolio is the way enterprises safely and securely deploy enterprise search across siloes of information. Founded in 2019, the mission of Atolio is to … |
| VIABOT™ | Santa Clara, California | $24M | Series A | September 17, 2026 | VIABOT™ is a company focused on precision outdoor commercial property care. They employ advanced technologies to enhance property maintenance and care… |
Frequently asked
Which US startups raised funding between September 14, 2026 and September 20, 2026?
25 US companies closed named venture rounds between September 14, 2026 and September 20, 2026, raising $2.30B in total. The largest were Angle Health ($591.5M, Series C), Impulse Space ($308M, Series D), Ridgeline ($250M, Series E). 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 September 14, 2026?
Angle Health of San Francisco, California raised $591.5M in a Series C round announced September 18, 2026. Angle Health democratizes access to modern healthcare services by unifying today's fragmented healthcare benefits ecosystem into one core coverage and delivery 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 September 14, 2026 and September 20, 2026, totalling $2.30B. 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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