0001193125-11-348663 8-K 2 20111220 1.01 9.01 20111221 20111221 Approach Resources Inc 0001405073 1311 510424817 DE 1231 8-K 34 001-33801 111274269 ONE RIDGMAR CENTRE 6500 WEST FREEWAY, SUITE 800 FORT WORTH TX 76116 8179899000 ONE RIDGMAR CENTRE 6500 WEST FREEWAY, SUITE 800 FORT WORTH TX 76116 8-K 1 d272994d8k.htm FORM 8-K EX-10.1 2 d272994dex101.htm AMENDMENT NO. 12 DATED AS OF DECEMBER 20, 2011