Esper

Esper operates at the intersection of medical devices, robotics, neuroscience, AI, and wearable computing. Its differentiation is the attempt to combine the prosthetic device, sensing hardware, control software, and personalization layer into one product ecosystem rather than treating the hand as an isolated mechanical replacement. The portfolio includes Esper Hand 1 and Hand 2, the Esper+ mobile configuration and training application, MARS as an EMG-based multisensory control hub, and Esper Platform as a cloud-based personalization system. This gives the company a broader technical scope than a conventional prosthetics manufacturer, but it also creates more demanding regulatory, reimbursement, manufacturing, and clinical-adoption requirements. The company remains private, has a stated employee band of 51–100, and has raised $5.2 million in structured cumulative funding, indicating an early commercial and scaling stage rather than the profile of a mature medtech incumbent. Esper’s strongest identifiable position is as an integrated bionic-device developer focused on adaptive control and human-machine interaction.

Esper’s trajectory shows a progression from early seed financing and product engineering toward larger-scale commercialization. The company recorded seed activity in September 2020, including a $50,000 round led by the Ukrainian Startup Fund, followed by another seed round in October 2021 with an undisclosed amount. A $150,000 grant in May 2024 and a $5 million venture round on June 28, 2024, represent the major financing inflection point; the latter accounts for most of the company’s $5.2 million structured funding total. Product development has broadened from the original Esper Hand into a system comprising Esper Hand 2, Esper+, MARS, and cloud-based control and personalization capabilities. Esper Hand 2’s May 2025 launch, with waterproofing, adaptive grip, and AI-driven behavior, marks a shift toward a more differentiated commercial product. The company also reports an international team and doubled production capacity, which are operational signals of manufacturing expansion.