The increase in operating expenses year-over-year was driven by an increase in salaries and related costs of $.5 million, which was primarily due to higher compensation and benefits and stock compensation expense. an increase in professional services of $0.5 million, which was primarily due to higher legal fees, and an increase in selling, general, and administrative expenses of 0.3 million, which was primarily due to the return of in-person internal training events and trade shows in 2022.

Aug 11, 2022 / CFO / receipt, needs a key / Tara Sem, CFO | earnings call 2022-08-11 | transcript 12c52cdb-6dd7-4544-bac1-ff5e96fc965b | chars 13346-13841 | segment 13