Anti-aging startup NewLimit raises $435M at $3B+ valuation, eyes clinic in 2027

San Francisco–based anti‑aging biotech NewLimit has raised $435 million in a Series C round led by Founders Fund, with participation from Thrive Capital, Greenoaks, Quiet Capital, Eli Lilly Ventures, and other return backers including Kleiner Perkins and Nat Friedman with Daniel Gross. The raise values the company at more than $3 billion, more than tripling its valuation from last year.

The funds will be used to move NewLimit’s first epigenetic “age‑reprogramming” medicine—a liver‑targeted mRNA therapy—into first‑in‑human clinical trials next year, with an initial trial planned for 2027. The company has shown preclinical results where reprogrammed liver cells from a 70‑year‑old donor behaved like those from a 20‑year‑old. NewLimit also plans to expand programs into immune, metabolic, and vascular cells, and may eventually open a clinic or partner with existing healthcare providers to deliver longevity therapies directly to patients.

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