Serve Robotics Q1 update shows multi-domain robot fleet scale after Diligent acquisition

Evidence notes

• Serve Robotics reported Q1 2026 revenue of $3.0M, up 238% sequentially and 578% year over year.
• Following the Diligent Robotics acquisition, Serve said it operated as a unified business across sidewalk delivery and healthcare robotics in Q1.
• The combined operating footprint reached 44 cities across 14 states, with approximately 2,000 robots deployed and the company shifting focus from fleet expansion to revenue per robot.