SHARE PURCHASE AGREEMENT among Mr. Alexander Otto AROSA VERMöGENSVERWALTUNGSGESELLSCHAFT M.B.H. CURA BETEILIGUNGSGESELLSCHAFT BRASILIEN M.B.H. “Purchasers” and DDR Luxembourg, S.à r.l. and DDR Luxembourg II, S.à r.l. “Sellers” Dated as of April 28, 2014