$GRPN 8-K SEC Filings

10-K 10-K/A 10-Q 10-Q/A 144 3 3/A 4 424B3 424B4 424B5 4/A 5 8-A12B 8-A12B/A 8-K 8-K/A ARS CERTNAS CORRESP D D/A DEF 14A DEFA14A DEFR14A EFFECT POSASR PRE 14A S-1 S-1/A S-1MEF S-3 S-3ASR S-8 S-8 POS SC 13D SC 13D/A SC 13G SC 13G/A SCHEDULE 13D/A SCHEDULE 13G SCHEDULE 13G/A UPLOAD