0001172661-18-000326 SC 13G/A 1 20180209 20180209 2U, Inc. 0001459417 7372 262335939 DE 1231 SC 13G/A 34 005-88512 18588783 7900 HARKINS ROAD LANHAM MD 20706 (301) 892-4350 7900 HARKINS ROAD LANHAM MD 20706 2tor, Inc. 20090324 ArrowMark Colorado Holdings LLC 0001483859 392068140 DE 1231 SC 13G/A 100 FILLMORE STREET, SUITE 325 DENVER CO 80206 303.398.2929 100 FILLMORE STREET, SUITE 325 DENVER CO 80206 Arrowpoint Asset Management, LLC 20100211 SC 13G/A 1 twou123117a1.htm 13G/A