Bridge Neurotech raises $13.5 million to build a brain-computer interface without surgery
Bridge Neurotech, a Silicon Valley start-up founded in 2026 by Will Biederman, came out of stealth on 6 October with $13.5 million from General Catalyst, reMind Capital, Sunflower Capital, Scott Sandell and others to build a wearable brain-computer interface that images brain activity with functional ultrasound through the skull. It has signed a multi-year research and development agreement to license Butterfly Network's Ultrasound-on-Chip technology, with payments for technology access and development milestones and commitments to buy Butterfly hardware; the value was not disclosed. Biederman co-founded the ultrasound research group Forest Neurotech, which signed a five-year, $20 million co-development deal with Butterfly in 2023. Forest's other two co-founders, Sumner Norman and Tyson Aflalo, went on to co-found Merge Labs, which signed its own Butterfly licensing deal on 1 September. Bridge's first research study, which is observational, is enrolling healthy adults and adults whose skulls were repaired with PEEK or Longeviti implants in Redwood City, California.