product pipeline / R&D affecting expense
“The increase was primarily due to an increase of $2.2 million in total payroll and employee benefits of research and development personnel attributable to an increase in the weighted-average headcount of R&D personnel of approximately 48.0% and an increase in salary over the prior period, and an increase of $1.7 million in professional services, and an increase of $0.2 million in other expenses, offset by a decrease of $3.3 million in stock-based compensation expenses.”
OKLO 10-Q