0001078782-19-000378 NT 10-K 1 20190131 20190430 20190430 20190430 APT Systems Inc 0001543739 8742 990370904 DE 0131 NT 10-K 34 000-54865 19781772 505 MONTGOMERY STREET 11TH FLOOR SAN FRANCISCO CA 94111 (415)-200-1105 505 MONTGOMERY STREET 11TH FLOOR SAN FRANCISCO CA 94111 NT 10-K 1 nt10k013119_nt10k.htm FORM 12B-25 NOTICE OF LATE FILING