US Startup Funding Rounds: August 17, 2026 – August 23, 2026
25 US venture rounds closed between August 17, 2026 and August 23, 2026, led by trutility at $1B (Seed).
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 |
|---|---|---|---|---|---|
| trutility | Washington, District of Columbia | $1B | Seed | August 18, 2026 | trutility is a next-generation grid infrastructure developer that owns and operates MW- to GWh-scale battery storage, community solar, distributed gen… |
| Castelion | ARLINGTON, VA | $1B | Series C | August 19, 2026 | Castelion builds American hypersonic deterrence through rapid, affordable, and scalable production of advanced strike weapons. Blackbeard is the first… |
| Wispr | San Francisco, California | $280M | Series B | August 17, 2026 | Wispr is building a more natural interface to interact with technology, aiming to enhance productivity through voice-first tools. Established in 2021,… |
| Starcloud | Redmond, Washington | $250M | Series A | August 21, 2026 | Starcloud, formerly known as Lumen Orbit, is a startup focused on building space-based data centers with a vision to place a network of powerful compu… |
| Deepgram | SAN FRANCISCO, CA | $130M | Series C | August 18, 2026 | Deepgram's speech AI platform is the foundation for the future of voice technologies. We've raised $86 million to put speech AI behind leading innovat… |
| Abcuro | Newton | $66M | Series D | August 18, 2026 | Abcuro, based in Newton MA, is a clinical stage biotechnology company developing first-in-class immunotherapies for the treatment of autoimmune diseas… |
| Smack Technologies | California | $61M | Series B | August 17, 2026 | Smack Technologies is the first frontier AI lab for national security, focused on building domain-specific AI models powered by deep reinforcement lea… |
| Hopscotch Primary Care | Connecticut | $53M | Series D | August 18, 2026 | Hopscotch Primary Care is a technology-enabled primary care company that delivers simple, joyful, connected care to patients in rural communities. Fou… |
| Minimus | Baton Rouge, Louisiana | $51M | Seed | August 19, 2026 | Minimus is the leading provider of secure, minimalistic container images. The company empowers federal agencies, government contractors, and systems i… |
| Steno | Los Angeles, CA | $49M | Series C | August 20, 2026 | Steno offers exceptional court reporting services combined with best-in-class technology and deferred payment options. Steno was built by tech and leg… |
| TravelX | Florida | $45M | Series A | August 19, 2026 | TravelX is a blockchain-based travel distribution startup with a focus on tokenizing inventory in the travel space and developing new ways of distribu… |
| Resolve AI | New York, New York | $40M | Series A | August 18, 2026 | Resolve AI is a startup focused on automating software operations by developing AI-powered tools for software engineers. Founded by former Splunk exec… |
| Adonis | New York | $40M | Series C | August 19, 2026 | Adonis is a Revenue Intelligence and Automation Platform, built for Healthcare, solving for operational challenges that impact the integrity of revenu… |
| Apollo Atomics | Cambridge, Massachusetts | $31M | Seed | August 20, 2026 | Apollo Atomics is an MIT spinoff focused on developing the next generation of pressurized water reactors (PWRs) designed for factory-based manufacturi… |
| Leal Therapeutics | Worcester | $30M | Series A | August 17, 2026 | Leal Therapeutics is a biotechnology company dedicated to developing novel neuro-metabolic therapeutics for patients with high-need central nervous sy… |
| Rundoo | Redwood City, California | $30M | Series B | August 19, 2026 | Rundoo is an AI-first platform that provides a system of record for independent supply stores. The company supports the operations of vital small busi… |
| Channel Medsystems | Berkeley, CA | $30M | Series C | August 20, 2026 | Channel Medsystems is a privately held company dedicated to transforming women’s healthcare globally through the development and commercialization of … |
| BlueFlag Security | Sunnyvale, California | $28M | Series A | August 17, 2026 | BlueFlag Security is an identity-based developer security company focused on helping manage developer risks across the software development lifecycle … |
| Renata Medical | Santa Ana, CA | $25M | Series D | August 19, 2026 | — |
| FSH Technologies | Philadelphia, Pennsylvania | $24.1M | Series A | August 20, 2026 | FSH Technologies is a woman-owned govtech startup that develops software for cities, school districts, and state agencies. The company focuses on repl… |
| Palona AI | Palo Alto, California | $20M | Series A | August 17, 2026 | Palona AI is a leading provider of Real-World AI solutions for the restaurant industry. Founded by former engineering leaders from Google and Meta, Pa… |
| Twin1 AI | California | $20M | Seed | August 20, 2026 | Twin1 AI is a privacy-first platform that provides professionals with AI-powered digital twins to enhance their expertise. The company aims to scale t… |
| Ampaire | California | $19M | Series B | August 19, 2026 | Ampaire is a Californian startup focused on developing hybrid-electric aircraft. The company aims to improve fuel efficiency and reduce emissions by r… |
| Boom | Austin | $15M | Series A | August 18, 2026 | Boom is building the financial hub for the 110 Million+ renters in the US. We’ve started by creating rent payment tools that enable renters to pay on … |
| Ours Privacy | — | $15M | Series A | August 19, 2026 | Ours Privacy is a healthcare technology startup that provides a HIPAA-compliant marketing and data infrastructure platform. The company helps healthca… |
Frequently asked
Which US startups raised funding between August 17, 2026 and August 23, 2026?
25 US companies closed named venture rounds between August 17, 2026 and August 23, 2026, raising $3.35B in total. The largest were trutility ($1B, Seed), Castelion ($1B, Series C), Wispr ($280M, Series B). 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 August 17, 2026?
trutility of Washington, District of Columbia raised $1B in a Seed round announced August 18, 2026. trutility is a next-generation grid infrastructure developer that owns and operates MW- to GWh-scale battery storage, community solar, distributed generation, a 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 August 17, 2026 and August 23, 2026, totalling $3.35B. 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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