0001179110-18-000459 4 1 20180102 20180104 20180104 JARRETT VALERIE B 0001208575 4 34 001-36376 18508387 USG CORPORATION 125 SOUTH FRANKLIN STREET CHICAGO IL 60606 2U, Inc. 0001459417 7372 262335939 DE 1231 7900 HARKINS ROAD LANHAM MD 20706 (301) 892-4350 7900 HARKINS ROAD LANHAM MD 20706 2tor, Inc. 20090324 4 1 edgar.xml FORM 4 -