Sorry - should have searched it up. December 31st is the fiscal year end. I assumed it was a lot later since the earnings release is March 10. I'll give them a pass being a newly public company, but they need to tighten up that reporting period. Some companies report 10 days after quarter close.
They're following applicable regulations. Nothing says they have to disclose that quickly, and while some companies do, many many do not. Patience young padawan.