X0306 4 2019-06-03 0 0001324404 CF Industries Holdings, Inc. CF 0001453096 Frost Bert A C/O CF INDUSTRIES HOLDINGS, INC. 4 PARKWAY NORTH, SUITE 400 DEERFIELD IL 60015 0 1 0 0 Sr.VP,SalesMktDev,Supply Chain Common stock, par value $0.01 per share 2019-06-03 4 M 0 6000 16.406 A 88072 D Common stock, par value $0.01 per share 2019-06-03 4 S 0 6000 41.1706 D 82072 D Employee Stock Option (right to buy) 16.406 2019-06-03 4 M 0 6000 0 D 2019-08-10 Common Stock, par value $0.01 per share 6000 21600 D The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $41.17 to $41.1712, inclusive. The reporting person undertakes to provide to CF Industries Holdings, Inc., any security holder of CF Industries Holdings, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within that range. The options vested in three equal installments on August 10, 2010, 2011 and 2012. /s/ Douglas C. Barnard, by power of attorney 2019-06-04