Short answer is we do not know. Historically LQMT tends to release earnings on Tuesdays. TDAmeritrade, E-trade, as well as a number of other sites show earnings release date today (11/10/2020). Hence the speculation of earnings today after market closes.
From SEC (they're at just around 100MM market cap) -
Following are the deadlines for companies to file Form 10-Q:
Category of Filer
Form 10-Q Deadline
Large Accelerated Filer ($700MM or more)
40 days
Accelerated Filer ($75MM or more and less than $700MM)
40 days
Non-accelerated Filer (less than $75MM)
45 days
**Short answer - it was due yesterday.** (unless Gibson, Dunn no longer knows security law now...top of 2nd page is the 40 day requirement for 10-Q)