SA国际传媒

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This is a weekly feature that runs down the week鈥檚 top 10 announced funding rounds in the U.S. Check out last week鈥檚 biggest funding rounds here.

Investor enthusiasm for AI once again drove the bulk of funding for the week鈥檚 largest rounds, led by 鈥檚 $13 billion mega-financing. However, companies across a number of industries attracted large investments, including biotech, security and medical devices.

1. , $13B, generative AI: San Francisco-based generative AI unicorn Anthropic raised a $13 billion Series F round at a $183 billion valuation, making it the fourth-most valuable private company in the world, per SA国际传媒 data. led the round, with and co-leading.

2. , $350M, enterprise AI: Sierra, a provider of AI-enabled customer experience technology, raised $350 million at a $10 billion valuation. The San Francisco-headquartered company was founded in 2023 by former 1co-CEO and current board chair and former executive .

3. , $200M, biotech: Watertown, Massachusetts-based Treeline Biosciences, a developer of medicines for cancer and other serious diseases, the close of a $200 million Series A extension round, bringing total funding to $1.1 billion, per . The 4-year-old company also says it will begin trials for multiple cancer drugs.

4. (tied) , $150M, drug discovery: Enveda, a startup that is working to discover new drugs by studying the chemistry of plants, raised $150 million in a Series D led by . The financing set a unicorn valuation for the 6-year-old, Boulder, Colorado-based company.

4. (tied) , $150M, AI: Baseten, a provider of technology for AI application developers, raised $150 million in a Series D led by . The round brings funding to date for the San Francisco-based startup to $285 million, per .

6. (tied) , $100M, medical devices: Galvenize Therapeutics, a developer of pulsed electric field therapies for oncology and chronic lung disease, secured a $100 million Series C round. led the financing for the Redwood City, California-based company.

6. (tied) , $100M, AI: You.com locked up $100 million in Series C funding at a $1.5 billion valuation, led by . The Palo Alto, California-based company develops AI infrastructure with an eye to helping agentic AI applications access the information they need.

8. (tied) , $85M, AI search: Exa, a startup that bills itself as the search engine for AI, picked up $70 million in Series B funding at a $700 million valuation. led the financing for the 4-year-old San Francisco-based company.

8. (tied) , $85M, AI logistics: San Francisco-based Augment, developer of an AI tool called Augie that was built to handle shipments for the logistics industry, landed $85 million in a Series A round led by .

10. (tied) , $75M, cybersecurity: Arlington, Virginia-based Shift5, developer of an intelligence platform for U.S. defense and transportation systems, closed on $75 million in a Series C financing led by .

10. (tied) , $75M, micro-LED technology: Mojo Vision, developer of a flexible micro-LED platform for use in multiple industries, raised $75 million in what it called a Series B Prime funding round. led the financing for the Cupertino, California-based company.

Methodology

We tracked the largest announced rounds in the SA国际传媒 database that were raised by U.S.-based companies for the period of Aug. 30-Sept. 5. Although most announced rounds are represented in the database, there could be a small time lag as some rounds are reported late in the week.

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