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 9, 2022 / CFO / receipt, needs a key / Don Alvarez, CFO | earnings call 2022-11-09 | transcript 03de874d-1aae-45c1-aa60-21abe6ec1dd1 | chars 6937-7178 | segment 6