Advanced NanoTherapies Secures Over $31M Series B to Deliver First-of-its-Kind Dual-Drug (Paclitaxel and Sirolimus) Nanoparticle-Coated Balloon Platform for Vascular Treatment

Financing supports the approval of U.S. Investigational Device Exemption (IDE), coronary clinical advancement, and expansion into below-the-knee peripheral (BTK) applications.

SANTA CLARA, Calif., June 2, 2026 /PRNewswire/ -- Advanced NanoTherapies, Inc. (ANT), a clinical-stage medtech company dedicated to improving outcomes for patients with coronary and peripheral artery disease, today announced the closing of an oversubscribed Series B financing totaling more than $31 million. The round was co-led by an undisclosed strategic investor and S3 Ventures, with participation from the T45 Fund and new and existing investors.

ANT is redefining the vascular intervention paradigm with a next-generation dual-drug (paclitaxel and sirolimus) nanoparticle on a percutaneous balloon platform. This approach aims to maximize therapeutic effects while promoting a more predictable, sustained vascular response compared with first-generation drug-coated balloons (DCBs) with a crystalline single-drug.