No problem, 10Q NT is submitted if filing is late.!
Filing a 10Q NT late today or tomorrow would buy them five calendar days to file if needed. So they could file Monday and be perfectly fine! ;-)
https://www.broadridge.com/resource/edgar-filing-calendar NON-ACCELERATED FILERS + Form 10-K due 90 days after fiscal year-end + NT 10-K due on the business day after the 10-K due date + Late 10-K due after filing a NT 10-K, the deadline for the 10-K is extended 15 calendar days from actual due date + Form 10-Q due 45 days after end of quarter-end + NT 10-Q due on the business day after the 10-Q due date + Late 10-Q due after filing a NT 10-Q, the deadline for the 10-Q is extended 5 calendar days from actual due date