Bridge Neurotech Emerges From Stealth With $13.5M to Build a Surgery-Free Ultrasound BCI

Summary

Bridge Neurotech, a Silicon Valley startup founded in 2026 by Will Biederman, who developed chip technology Neuralink used in its first implants and co-founded Forest Neurotech, came out of stealth on October 6 with $13.5 million from General Catalyst, reMind Capital, Sunflower Capital, and Scott Sandell. The company is building a brain-computer interface that needs neither surgery nor implants, using ultrasound to read brain activity through the skull, and plans a wearable device; its first human research study is enrolling in Redwood City, California. Coverage of the launch notes that ultrasound tracks neural activity indirectly, through blood-flow changes, so its signal trails direct electrical recording, and that Bridge plans to use predictive AI models to compensate. WIRED, which broke the story, framed Bridge as a rival to Merge Labs, the Sam Altman-backed startup that is also building an ultrasound-based interface.