X0303 4 2011-02-24 0001357615 KBR, INC. KBR 0001349106 Williams Mark S 601 JEFFERSON STREET HOUSTON TX 77002 0 1 0 0 Group President - IG&P Common Stock 2011-02-24 4 A 0 849 0 A 3089 D Stock Options 21.19 2011-02-24 4 A 0 3748 0 A 2011-03-10 2020-03-10 Common Stock 3748 3748 D On March 10, 2010, the reporting person was granted restricted stock units will convert to common stock on a 1-to-1 ratio. These restricted stock units vest over five years with 20% vesting on the first anniversary of the grant date, and 20% on each anniversary thereafter, provided that the company has positive net income for the calendar year preceding the vesting date. This portion represents the initial 20% that has satisfied the positive net income requirement. On March 10, 2010, the reporting person was granted options vest at a rate of 33 1/3% on the first anniversary, 66 2/3% on the second anniversary and 100% on the third anniversary from the original date of grant, provided that the company has positive net income for the calendar year preceding the vesting date. This portion represents the initial 33 1/3% that has satisfied the positive net income requirement. Jeffrey B. King, Attorney-In-Fact 2011-02-28