X0303 4 2011-02-15 0 0001364541 EAGLE ROCK ENERGY PARTNERS L P EROC 0001398355 MILLS JOSEPH A EAGLE ROCK ENERGY PARTNERS, L.P. P.O. BOX 2968 HOUSTON TX 77252 1 1 0 0 CEO and Chairman Warrants 6.00 2011-02-15 4 J 0 9407 0 A 2010-08-15 2012-05-15 Common Units 9407 9407 D Pro rata distribution for no consideration by Eagle Rock Holdings, L.P. to each of its partners of warrants for common units of Eagle Rock Energy Partners, L.P. Warrants are only exercisable on each of August 15, 2010, November 15, 2010, March 15, 2011, May 15, 2011, August 15, 2011, November 15, 2011, March 15, 2012 and May 15, 2012. The warrants are freely tradeable until May 15, 2012. Reflects the pro rata distribution for no consideration by Eagle Rock Holdings, L.P. to each of its partners of warrants for common units of Eagle Rock Energy Partners, L.P. The reporting person is Chief Executive Officer and Chairman of Eagle Rock Energy G&P, LLC, the general partner of Eagle Rock Energy GP, L.P., the general partner of registrant. /s/ Charles C. Boettcher, Attorney-In-Fact 2011-02-16