EXHIBIT K TRANSACTIONS IN THE COMMON SHARES OF CLIFFS NATURAL RESOURCES INC. TRANSACTIONS BY HARBINGER CAPITAL PARTNERS MASTER FUND I, LTD. Date of Number of Shares Transaction Purchased / (Sold) Price per Share 2/2/2009 (303,600) $22.3255 2/2/2009 (22,500) $22.3433 2/3/2009 (528,000) $22.7774 TRANSACTIONS BY HARBINGER CAPITAL PARTNERS SPECIAL SITUATIONS FUND, L.P. Date of Number of Shares Transaction Purchased / (Sold) Price per Share 2/2/2009 (156,400) $22.3255 2/2/2009 (11,600) $22.3433 2/3/2009 (272,000) $22.7774 2/4/2009 (50,000) $24.8438 2/4/2009 (223,543) $25.0238 K-1