The largest driver of the increase was higher SG&A, which increased by $10.4 million for the three months ended June 30, 2021, compared to the same period in 2020, attributable in large part to higher personnel costs associated with our increase. These higher personnel costs were primarily attributable to the expansion of our sales and marketing teams, the remainder of the increase in conferences and training events, as well as higher travel costs as our commercial team returns to in-person events, as Derek mentioned.

Aug 9, 2021 / CEO / receipt, needs a key / Derek Matzold, CEO | earnings call 2021-08-09 | transcript 250cd034-f569-435b-95a0-d77cc69db245 | chars 15951-16474 | segment 16