Best to ask management or investor relations a question like...

Best to ask management or investor relations a question like this to get a meaningful answer. With small companies, it could be so many variables. Maybe they had larger one off costs in earlier Q's buying fixed cost items to get started. Maybe they are waiting to see the outcome of the $20m revenue deal before increasing costs as they might be buying someone that has already got that equipment or research done. Too many variables but I like your question and where your head is at analysing the business. Good stuff.

Email investor relations and eventually i'm sure you will get an answer. The details are on the bottom of the announcements usually.