Pulse Biosciences, Inc. announced the completion of the first five procedures in its first-in-human feasibility study with its novel CellFX nsPFA cardiac catheter. All patients were successfully discharged by treating physicians. Patients will continue to be monitored and evaluated over the coming months to assess safety and effectiveness with the primary safety endpoint at 30 days.

Dr. Vivek Reddy, Director of Cardiac Arrhythmia Services at Mount Sinai Hospital, NY, and Dr. Pet Neuzil, Chief of Cardiology at Na Homolce Hospital, Prague, and colleagues used the Company's CellFX nsPFA 360 cardiac catheter integrated with 3D mapping and navigation technologies (iMap System, CardioNXT) to successfully treat five patients with atrial fibrillation (AF) at Na Homolce Hospital. Pulse Biosciences' CellFX nsPFA 360 cardiovascular catheter, which is still in the investigational stage, is uniquely designed to produce a nonthermal ablation, initially targeted for pulmonary vein isolation, using the Company's proprietary CellFX nsPFA energy in the treatment of atrial fibrillation. The Company expects to provide additional updates on the first-in-human procedures with the CellFX system in the upcoming months.

Pulse Biosciences will inform stakeholders promptly if results differ materially from the stated expectations addressing safety and efficacy. The observations to date have been positive but the broad set of risks associated with cardiac surgery remain. The Company anticipates initiating the regulatory process with the U.S. FDA and appropriate regulatory authorities worldwide including Europe in the coming quarters and expects additional studies will be required.