Sales and marketing expenses were $6.3 million in the first quarter of 2021, compared to $5.3 million in the same period in 2020. This increase was mainly due to higher compensation, benefits, and commissions from additional sales personnel, offset by lower travel and consulting spend.

May 13, 2021 / CFO / receipt, needs a key / Nora Brennan, CFO | earnings call 2021-05-13 | transcript 2782d111-114d-4fd7-89fc-6eaa3b572aea | chars 7137-7423 | segment 7

The increase in both periods was due to the expansion of the commercial organization and related activities partially offset by lower travel and consulting expenses.

Mar 24, 2021 / CFO / receipt, needs a key / Nora Brennan, CFO | earnings call 2021-03-24 | transcript 57d5b8c7-404e-49b6-8472-7d230c1ab71f | chars 9523-9688 | segment 9