The increase was primarily due to a $1.6 million increase in R&D expenses related to non-cash, stock-based compensation, costs incurred for additional engineering staff and contractors, allocated occupancy costs, and R&D-related travel costs.

Nov 1, 2022 / CFO / receipt, needs a key / Don Alvarez, CFO | earnings call 2022-11-01 | transcript 39d794c8-1771-48c8-be95-c745c843149d | chars 6930-7172 | segment 6