Significant Startup Funding Rounds in the U.S. (April 19-25, 2025)
The landscape of startup financing is constantly evolving, and our latest roundup highlights some of the most noteworthy funding deals exceeding $100 million for U.S.-based startups. This report covers the key developments from the week, showcasing diverse sectors from cybersecurity to fintech.
Top Funding Highlights
The week did not feature any billion-dollar funding rounds; however, several promising startups secured substantial capital. Below are the ten most significant funding rounds:
-
Chainguard: $356 Million in Cybersecurity
Chainguard, specializing in software supply chain security, raised $356 million in a Series D funding round, bringing its valuation to $3.5 billion. This influx of funds, led by Kleiner Perkins alongside existing investor IVP, marks a significant upsurge from its previous valuation of $1.12 billion. Founded in 2021 and headquartered in Kirkland, Washington, Chainguard aims to help companies enhance their software development security.
-
Supabase: $200 Million in Database Technology
San Francisco’s Supabase secured $200 million in Series D funding, achieving a valuation of $2 billion. The open-source database platform, designed for AI application development, has raised a total of $396 million since its inception in 2020.
-
Electra: $186 Million for Clean Iron Production
The Boulder-based startup Electra raised $186 million in Series B funding. Its innovative process produces pure iron using renewable energy, potentially reducing CO₂ emissions associated with steelmaking. The funding will aid the construction of its demonstration plant set to begin later this year.
-
Altruist: $152 Million in Wealth Management
Altruist, a self-clearing brokerage for financial advisers in Los Angeles, raised a $152 million round led by GIC, achieving a valuation of $1.9 billion. It has successfully raised $601.5 million since its founding in 2018.
-
Manychat: $140 Million for Conversational AI
Palo Alto’s Manychat secured $140 million in growth capital, aiming to enhance its conversational AI tools for social media and messaging platforms. With a profitable track record, the company intends to use this funding to expand its global footprint and enhance its technology.
-
Electra.aero: $115 Million in Aerospace Innovation
Electra.aero, based in Manassas, Virginia, raised $115 million in Series B funding to further develop its hybrid-electric aircraft, which has received substantial pre-orders. The funds will facilitate entry into production and certification stages for its innovative aircraft design.
-
Biolinq: $100 Million for Biotech Solutions
San Diego’s Biolinq raised $100 million in Series C funding to further develop multi-analyte biosensors aimed at improving metabolic health. Since its establishment in 2012, the biotech company has garnered $276 million in total funding.
-
Dataminr: $100 Million for Real-Time Analytics
Returning with another funding round, New York-based Dataminr raised $100 million through convertible financing. The company’s real-time platform utilizes public data to identify critical events and risks, nearing an annual recurring revenue threshold of $200 million.
-
Flow: $100 Million in Real Estate Technology
Residential real estate firm Flow, backed by Adam Neumann, raised over $100 million at a valuation of $2.5 billion. The Miami-based company aims to innovate within the real estate sector, continuing the momentum from previous significant investments.
-
Endor Labs: $93 Million in Application Security
Palo Alto’s Endor Labs raised $93 million in Series B funding to enhance its application security solutions. Founded in 2022, the startup has raised a total of $188 million.
Global Funding Landscape
Internationally, Qianxun Spatial Intelligence, based in Shanghai, marked the week with a notable Series B funding round of approximately $137 million, reflecting robust investment activity in precision positioning services.
Funding Methodology
This report includes a comprehensive analysis of the largest funding rounds announced between April 19 and April 25, 2025, from U.S.-based companies as tracked by the Crunchbase database. Please note that reporting times may vary, leading to potential delays in announcement publications.
