NOC

SEC source: 0001225208-19-002770 · doc4.xml · derivative · entry 5

Jones Christopher T · CIK 0001559104 · Corp VP & Pres Tech Svcs

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 22,865

Underlying: Common Stock · 12,529.25 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F4 · derivative.exercise_price: Each RPSR represents a contingent right to receive an equivalent number of shares of Issuer common stock, or, at the Issuer's election, cash or a combination of cash and Issuer common stock. The RPSRs vest if the applicable performance metric is satisfied for the relevant measurement period. Grants awarded pursuant to Rule 16b-3(d).

F1 · shares: Shares expected to be issued in settlement of Restricted Performance Stock Rights ("RPSRs") granted under the 2011 Long-Term Incentive Stock Plan ("LTISP") on 2/17/16 with a valuation of performance measurement period ("measurement period") that ended 12/31/18. RPSRs to be settled at 115% of target. The shares are anticipated to be distributed into the participant's account on February 14, 2019.

F4 · derivative.exercise_date: Each RPSR represents a contingent right to receive an equivalent number of shares of Issuer common stock, or, at the Issuer's election, cash or a combination of cash and Issuer common stock. The RPSRs vest if the applicable performance metric is satisfied for the relevant measurement period. Grants awarded pursuant to Rule 16b-3(d).

F4 · derivative.expiration_date: Each RPSR represents a contingent right to receive an equivalent number of shares of Issuer common stock, or, at the Issuer's election, cash or a combination of cash and Issuer common stock. The RPSRs vest if the applicable performance metric is satisfied for the relevant measurement period. Grants awarded pursuant to Rule 16b-3(d).

F7 · balance_after: Total amount includes 7,748 RPSRs granted on 2/13/19 with a measurement period ending on 12/31/21; 5,966 RPSRs granted on 2/13/18 with a measurement period ending on 12/31/20; and 9,151 RPSRs granted on 2/17/17 with a measurement period ending on 12/31/19.

SEC source: 0001225208-19-002770 · doc4.xml · derivative · entry 4

Jones Christopher T · CIK 0001559104 · Corp VP & Pres Tech Svcs

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 35,394.25

Underlying: Common Stock · 9,382.25 shares

Expires not disclosed

F4 · derivative.exercise_price: Each RPSR represents a contingent right to receive an equivalent number of shares of Issuer common stock, or, at the Issuer's election, cash or a combination of cash and Issuer common stock. The RPSRs vest if the applicable performance metric is satisfied for the relevant measurement period. Grants awarded pursuant to Rule 16b-3(d).

F5 · shares: The RPSRs acquired include (i) 1,634.25 vested RPSRs with respect to the measurement period ended 12/31/18 acquired due to settlement of the 2016 RPSRs held at 115% of the target award and (ii) 7,748 unvested RPSRs granted under the LTISP on 2/13/19 with a measurement period ending on 12/31/21.

F4 · derivative.exercise_date: Each RPSR represents a contingent right to receive an equivalent number of shares of Issuer common stock, or, at the Issuer's election, cash or a combination of cash and Issuer common stock. The RPSRs vest if the applicable performance metric is satisfied for the relevant measurement period. Grants awarded pursuant to Rule 16b-3(d).

F4 · derivative.expiration_date: Each RPSR represents a contingent right to receive an equivalent number of shares of Issuer common stock, or, at the Issuer's election, cash or a combination of cash and Issuer common stock. The RPSRs vest if the applicable performance metric is satisfied for the relevant measurement period. Grants awarded pursuant to Rule 16b-3(d).

F6 · balance_after: Total amount includes 12,529.25 vested RPSRs granted under the LTISP on 2/17/16 with a measurement period ending on 12/31/18; 7,748 RPSRs granted on 2/13/19 with a measurement period ending on 12/31/21; 5,966 RPSRs granted on 2/13/18 with a measurement period ending on 12/31/20; and 9,151 RPSRs granted on 2/17/17 with a measurement period ending on 12/31/19.

SEC source: 0001225208-19-002770 · doc4.xml · nonDerivative · entry 2

Jones Christopher T · CIK 0001559104 · Corp VP & Pres Tech Svcs

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 77,442.899

F2 · shares: Shares surrendered to issuer in payment of tax liability in connection with settlement of RPSRs in accordance with Rule 16b-3(e)

SEC source: 0001225208-19-002770 · doc4.xml · nonDerivative · entry 1

Jones Christopher T · CIK 0001559104 · Corp VP & Pres Tech Svcs

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 82,570.899

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: Shares expected to be issued in settlement of Restricted Performance Stock Rights ("RPSRs") granted under the 2011 Long-Term Incentive Stock Plan ("LTISP") on 2/17/16 with a valuation of performance measurement period ("measurement period") that ended 12/31/18. RPSRs to be settled at 115% of target. The shares are anticipated to be distributed into the participant's account on February 14, 2019.

SEC source: 0001225208-19-002769 · doc4.xml · derivative · entry 5

Hardesty Michael A · CIK 0001569355 · Corp VP, Controller & CAO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,110

Underlying: Common Stock · 766 shares

Expires not disclosed

F7 · derivative.exercise_price: Each Restricted Stock Right ("RSR") represents a contingent right to receive an equivalent number of shares of Issuer common stock, or, at the election of the Issuer's Compensation Committee, cash or a combination of cash and Issuer common stock. The RSRs were granted under the LTISP on 2/13/19 and will vest on 2/13/22.

F7 · derivative.exercise_date: Each Restricted Stock Right ("RSR") represents a contingent right to receive an equivalent number of shares of Issuer common stock, or, at the election of the Issuer's Compensation Committee, cash or a combination of cash and Issuer common stock. The RSRs were granted under the LTISP on 2/13/19 and will vest on 2/13/22.

F7 · derivative.expiration_date: Each Restricted Stock Right ("RSR") represents a contingent right to receive an equivalent number of shares of Issuer common stock, or, at the election of the Issuer's Compensation Committee, cash or a combination of cash and Issuer common stock. The RSRs were granted under the LTISP on 2/13/19 and will vest on 2/13/22.

F8 · balance_after: Total amount includes 766 RSRs granted under the LTISP on 2/13/19 that will vest on 2/13/22; 632 RSRs granted under the LTISP on 2/13/18 that will vest on 2/13/21; 765 RSRs granted under the LTISP on 2/17/17 that will vest on 2/17/20; and 947 RSRs granted under the LTISP on 2/17/16 that will vest on 2/17/19.

SEC source: 0001225208-19-002769 · doc4.xml · derivative · entry 4

Hardesty Michael A · CIK 0001569355 · Corp VP, Controller & CAO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,049

Underlying: Common Stock · 4,333.56 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · derivative.exercise_price: Each RPSR represents a contingent right to receive an equivalent number of shares of Issuer common stock, or, at the Issuer's election, cash or a combination of cash and Issuer common stock. The RPSRs vest if the applicable performance metric is satisfied for the relevant measurement period. Grants awarded pursuant to Rule 16b-3(d).

F1 · shares: Shares expected to be issued in settlement of Restricted Performance Stock Rights ("RPSRs") granted under the 2011 Long-Term Incentive Stock Plan ("LTISP") on 2/17/16 with a valuation of performance measurement period ("measurement period") that ended 12/31/18. RPSRs to be settled at 196% of target. The shares are anticipated to be distributed into the participant's account on February 14, 2019.

F3 · derivative.exercise_date: Each RPSR represents a contingent right to receive an equivalent number of shares of Issuer common stock, or, at the Issuer's election, cash or a combination of cash and Issuer common stock. The RPSRs vest if the applicable performance metric is satisfied for the relevant measurement period. Grants awarded pursuant to Rule 16b-3(d).

F3 · derivative.expiration_date: Each RPSR represents a contingent right to receive an equivalent number of shares of Issuer common stock, or, at the Issuer's election, cash or a combination of cash and Issuer common stock. The RPSRs vest if the applicable performance metric is satisfied for the relevant measurement period. Grants awarded pursuant to Rule 16b-3(d).

F6 · balance_after: Total amount includes 1,788 RPSRs granted on 2/13/19 with a measurement period ending on 12/31/21; 1,475 RPSRs granted on 2/13/18 with a measurement period ending on 12/31/20; and 1,786 RPSRs granted on 2/17/17 with a measurement period ending on 12/31/19.

SEC source: 0001225208-19-002769 · doc4.xml · derivative · entry 3

Hardesty Michael A · CIK 0001569355 · Corp VP, Controller & CAO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 9,382.56

Underlying: Common Stock · 3,910.56 shares

Expires not disclosed

F3 · derivative.exercise_price: Each RPSR represents a contingent right to receive an equivalent number of shares of Issuer common stock, or, at the Issuer's election, cash or a combination of cash and Issuer common stock. The RPSRs vest if the applicable performance metric is satisfied for the relevant measurement period. Grants awarded pursuant to Rule 16b-3(d).

F4 · shares: The RPSRs acquired include (i) 2,122.56 vested RPSRs with respect to the measurement period ended 12/31/18 acquired due to settlement of the 2016 RPSRs held at 196% of the target award and (ii) 1,788 unvested RPSRs granted under the LTISP on 2/13/19 with a measurement period ending on 12/31/21.

F3 · derivative.exercise_date: Each RPSR represents a contingent right to receive an equivalent number of shares of Issuer common stock, or, at the Issuer's election, cash or a combination of cash and Issuer common stock. The RPSRs vest if the applicable performance metric is satisfied for the relevant measurement period. Grants awarded pursuant to Rule 16b-3(d).

F3 · derivative.expiration_date: Each RPSR represents a contingent right to receive an equivalent number of shares of Issuer common stock, or, at the Issuer's election, cash or a combination of cash and Issuer common stock. The RPSRs vest if the applicable performance metric is satisfied for the relevant measurement period. Grants awarded pursuant to Rule 16b-3(d).

F5 · balance_after: Total amount includes 4,333.56 vested RPSRs granted under the LTISP on 2/17/16 with a measurement period ending on 12/31/18; 1,788 RPSRs granted on 2/13/19 with a measurement period ending on 12/31/21; 1,475 RPSRs granted on 2/13/18 with a measurement period ending on 12/31/20; and 1,786 RPSRs granted on 2/17/17 with a measurement period ending on 12/31/19.

SEC source: 0001225208-19-002769 · doc4.xml · nonDerivative · entry 2

Hardesty Michael A · CIK 0001569355 · Corp VP, Controller & CAO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,300.2

F2 · shares: Shares surrendered to issuer in payment of tax liability in connection with settlement of RPSRs in accordance with Rule 16b-3(e)

SEC source: 0001225208-19-002769 · doc4.xml · nonDerivative · entry 1

Hardesty Michael A · CIK 0001569355 · Corp VP, Controller & CAO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 9,739.2

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: Shares expected to be issued in settlement of Restricted Performance Stock Rights ("RPSRs") granted under the 2011 Long-Term Incentive Stock Plan ("LTISP") on 2/17/16 with a valuation of performance measurement period ("measurement period") that ended 12/31/18. RPSRs to be settled at 196% of target. The shares are anticipated to be distributed into the participant's account on February 14, 2019.

SEC source: 0001225208-19-002768 · doc4.xml · derivative · entry 5

CHESTON SHEILA C. · CIK 0001499087 · Corp. VP & General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 12,502

Underlying: Common Stock · 2,845 shares

Expires not disclosed

F7 · derivative.exercise_price: Each Restricted Stock Right ("RSR") represents a contingent right to receive an equivalent number of shares of Issuer common stock, or, at the election of the Issuer's Compensation Committee, cash or a combination of cash and Issuer common stock. The RSRs were granted under the LTISP on 2/13/19 and will vest on 2/13/22.

F7 · derivative.exercise_date: Each Restricted Stock Right ("RSR") represents a contingent right to receive an equivalent number of shares of Issuer common stock, or, at the election of the Issuer's Compensation Committee, cash or a combination of cash and Issuer common stock. The RSRs were granted under the LTISP on 2/13/19 and will vest on 2/13/22.

F7 · derivative.expiration_date: Each Restricted Stock Right ("RSR") represents a contingent right to receive an equivalent number of shares of Issuer common stock, or, at the election of the Issuer's Compensation Committee, cash or a combination of cash and Issuer common stock. The RSRs were granted under the LTISP on 2/13/19 and will vest on 2/13/22.

F8 · balance_after: Total amount includes 2,845 RSRs granted under the LTISP on 2/13/19 that will vest on 2/13/22; 2,348 RSRs granted under the LTISP on 2/13/18 that will vest on 2/13/21; 3,189 RSRs granted under the LTISP on 2/17/17 that will vest on 2/17/20; and 4,120 RSRs granted under the LTISP on 2/17/16 that will vest on 2/17/19.

SEC source: 0001225208-19-002768 · doc4.xml · derivative · entry 4

CHESTON SHEILA C. · CIK 0001499087 · Corp. VP & General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 19,511

Underlying: Common Stock · 10,440.85 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · derivative.exercise_price: Each RPSR represents a contingent right to receive an equivalent number of shares of Issuer common stock, or, at the Issuer's election, cash or a combination of cash and Issuer common stock. The RPSRs vest if the applicable performance metric is satisfied for the relevant measurement period. Grants awarded pursuant to Rule 16b-3(d).

F1 · shares: Shares expected to be issued in settlement of Restricted Performance Stock Rights ("RPSRs") granted under the 2011 Long-Term Incentive Stock Plan ("LTISP") on 2/17/16 with a valuation of performance measurement period ("measurement period") that ended 12/31/18. RPSRs to be settled at 115% of target. The shares are anticipated to be distributed into the participant's account on February 14, 2019.

F3 · derivative.exercise_date: Each RPSR represents a contingent right to receive an equivalent number of shares of Issuer common stock, or, at the Issuer's election, cash or a combination of cash and Issuer common stock. The RPSRs vest if the applicable performance metric is satisfied for the relevant measurement period. Grants awarded pursuant to Rule 16b-3(d).

F3 · derivative.expiration_date: Each RPSR represents a contingent right to receive an equivalent number of shares of Issuer common stock, or, at the Issuer's election, cash or a combination of cash and Issuer common stock. The RPSRs vest if the applicable performance metric is satisfied for the relevant measurement period. Grants awarded pursuant to Rule 16b-3(d).

F6 · balance_after: Total amount includes 6,714 RPSRs granted on 2/13/19 with a measurement period ending on 12/31/21; 5,171 RPSRs granted on 2/13/18 with a measurement period ending on 12/31/20; and 7,626 RPSRs granted on 2/17/17 with a measurement period ending on 12/31/19.

SEC source: 0001225208-19-002768 · doc4.xml · derivative · entry 3

CHESTON SHEILA C. · CIK 0001499087 · Corp. VP & General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 29,951.85

Underlying: Common Stock · 8,075.85 shares

Expires not disclosed

F3 · derivative.exercise_price: Each RPSR represents a contingent right to receive an equivalent number of shares of Issuer common stock, or, at the Issuer's election, cash or a combination of cash and Issuer common stock. The RPSRs vest if the applicable performance metric is satisfied for the relevant measurement period. Grants awarded pursuant to Rule 16b-3(d).

F4 · shares: The RPSRs acquired include (i) 1,361.85 vested RPSRs with respect to the measurement period ended 12/31/18 acquired due to settlement of the 2016 RPSRs held at 115% of the target award and (ii) 6,714 unvested RPSRs granted under the LTISP on 2/13/19 with a measurement period ending on 12/31/21.

F3 · derivative.exercise_date: Each RPSR represents a contingent right to receive an equivalent number of shares of Issuer common stock, or, at the Issuer's election, cash or a combination of cash and Issuer common stock. The RPSRs vest if the applicable performance metric is satisfied for the relevant measurement period. Grants awarded pursuant to Rule 16b-3(d).

F3 · derivative.expiration_date: Each RPSR represents a contingent right to receive an equivalent number of shares of Issuer common stock, or, at the Issuer's election, cash or a combination of cash and Issuer common stock. The RPSRs vest if the applicable performance metric is satisfied for the relevant measurement period. Grants awarded pursuant to Rule 16b-3(d).

F5 · balance_after: Total amount includes 10,440.85 vested RPSRs granted under the LTISP on 2/17/16 with a measurement period ending on 12/31/18; 6,714 RPSRs granted on 2/13/19 with a measurement period ending on 12/31/21; 5,171 RPSRs granted on 2/13/18 with a measurement period ending on 12/31/20; and 7,626 RPSRs granted on 2/17/17 with a measurement period ending on 12/31/19.

SEC source: 0001225208-19-002768 · doc4.xml · nonDerivative · entry 2

CHESTON SHEILA C. · CIK 0001499087 · Corp. VP & General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 49,617.37

F2 · shares: Shares surrendered to issuer in payment of tax liability in connection with settlement of RPSRs in accordance with Rule 16b-3(e)

SEC source: 0001225208-19-002768 · doc4.xml · nonDerivative · entry 1

CHESTON SHEILA C. · CIK 0001499087 · Corp. VP & General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 54,136.37

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: Shares expected to be issued in settlement of Restricted Performance Stock Rights ("RPSRs") granted under the 2011 Long-Term Incentive Stock Plan ("LTISP") on 2/17/16 with a valuation of performance measurement period ("measurement period") that ended 12/31/18. RPSRs to be settled at 115% of target. The shares are anticipated to be distributed into the participant's account on February 14, 2019.

SEC source: 0001225208-19-002767 · doc4.xml · derivative · entry 6

Caylor Mark A · CIK 0001559097 · Corp VP & Pres, Mission System

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 15,955

Underlying: Common Stock · 3,830 shares

Expires not disclosed

F8 · derivative.exercise_price: Each Restricted Stock Right ("RSR") represents a contingent right to receive an equivalent number of shares of Issuer common stock, or, at the election of the Issuer's Compensation Committee, cash or a combination of cash and Issuer common stock. The RSRs were granted under the LTISP on 2/13/19 and will vest on 2/13/22.

F8 · derivative.exercise_date: Each Restricted Stock Right ("RSR") represents a contingent right to receive an equivalent number of shares of Issuer common stock, or, at the election of the Issuer's Compensation Committee, cash or a combination of cash and Issuer common stock. The RSRs were granted under the LTISP on 2/13/19 and will vest on 2/13/22.

F8 · derivative.expiration_date: Each Restricted Stock Right ("RSR") represents a contingent right to receive an equivalent number of shares of Issuer common stock, or, at the election of the Issuer's Compensation Committee, cash or a combination of cash and Issuer common stock. The RSRs were granted under the LTISP on 2/13/19 and will vest on 2/13/22.

F9 · balance_after: Total amount includes 3,830 RSRs granted under the LTISP on 2/13/19 that will vest on 2/13/22; 1,655 RSRs granted under the LTISP on 12/4/18 that will vest on 12/4/21; 3,161 RSRs granted under the LTISP on 2/13/18 that will vest on 2/13/21; 3,189 RSRs granted under the LTISP on 2/17/17 that will vest on 2/17/20; and 4,120 RSRs granted under the LTISP on 2/17/16 that will vest on 2/17/19.

SEC source: 0001225208-19-002767 · doc4.xml · derivative · entry 5

Caylor Mark A · CIK 0001559097 · Corp VP & Pres, Mission System

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 23,625

Underlying: Common Stock · 10,440.85 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F4 · derivative.exercise_price: Each RPSR represents a contingent right to receive an equivalent number of shares of Issuer common stock, or, at the Issuer's election, cash or a combination of cash and Issuer common stock. The RPSRs vest if the applicable performance metric is satisfied for the relevant measurement period. Grants awarded pursuant to Rule 16b-3(d).

F1 · shares: Shares expected to be issued in settlement of Restricted Performance Stock Rights ("RPSRs") granted under the 2011 Long-Term Incentive Stock Plan ("LTISP") on 2/17/16 with a valuation of performance measurement period ("measurement period") that ended 12/31/18. RPSRs to be settled at 115% of target. The shares are anticipated to be distributed into the participant's account on February 14, 2019.

F4 · derivative.exercise_date: Each RPSR represents a contingent right to receive an equivalent number of shares of Issuer common stock, or, at the Issuer's election, cash or a combination of cash and Issuer common stock. The RPSRs vest if the applicable performance metric is satisfied for the relevant measurement period. Grants awarded pursuant to Rule 16b-3(d).

F4 · derivative.expiration_date: Each RPSR represents a contingent right to receive an equivalent number of shares of Issuer common stock, or, at the Issuer's election, cash or a combination of cash and Issuer common stock. The RPSRs vest if the applicable performance metric is satisfied for the relevant measurement period. Grants awarded pursuant to Rule 16b-3(d).

F7 · balance_after: Total amount includes 9,038 RPSRs granted on 2/13/19 with a measurement period ending on 12/31/21; 6,961 RPSRs granted on 2/13/18 with a measurement period ending on 12/31/20; and 7,626 RPSRs granted on 2/17/17 with a measurement period ending on 12/31/19.

SEC source: 0001225208-19-002767 · doc4.xml · derivative · entry 4

Caylor Mark A · CIK 0001559097 · Corp VP & Pres, Mission System

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 34,065.85

Underlying: Common Stock · 10,399.85 shares

Expires not disclosed

F4 · derivative.exercise_price: Each RPSR represents a contingent right to receive an equivalent number of shares of Issuer common stock, or, at the Issuer's election, cash or a combination of cash and Issuer common stock. The RPSRs vest if the applicable performance metric is satisfied for the relevant measurement period. Grants awarded pursuant to Rule 16b-3(d).

F5 · shares: The RPSRs acquired include (i) 1,361.85 vested RPSRs with respect to the measurement period ended 12/31/18 acquired due to settlement of the 2016 RPSRs held at 115% of the target award and (ii) 9,038 unvested RPSRs granted under the LTISP on 2/13/19 with a measurement period ending on 12/31/21.

F4 · derivative.exercise_date: Each RPSR represents a contingent right to receive an equivalent number of shares of Issuer common stock, or, at the Issuer's election, cash or a combination of cash and Issuer common stock. The RPSRs vest if the applicable performance metric is satisfied for the relevant measurement period. Grants awarded pursuant to Rule 16b-3(d).

F4 · derivative.expiration_date: Each RPSR represents a contingent right to receive an equivalent number of shares of Issuer common stock, or, at the Issuer's election, cash or a combination of cash and Issuer common stock. The RPSRs vest if the applicable performance metric is satisfied for the relevant measurement period. Grants awarded pursuant to Rule 16b-3(d).

F6 · balance_after: Total amount includes 10,440.85 vested RPSRs granted under the LTISP on 2/17/16 with a measurement period ending on 12/31/18; 9,038 RPSRs granted on 2/13/19 with a measurement period ending on 12/31/21; 6,961 RPSRs granted on 2/13/18 with a measurement period ending on 12/31/20; and 7,626 RPSRs granted on 2/17/17 with a measurement period ending on 12/31/19.

SEC source: 0001225208-19-002767 · doc4.xml · nonDerivative · entry 2

Caylor Mark A · CIK 0001559097 · Corp VP & Pres, Mission System

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 27,280.16

F2 · shares: Shares surrendered to issuer in payment of tax liability in connection with settlement of RPSRs in accordance with Rule 16b-3(e)

SEC source: 0001225208-19-002767 · doc4.xml · nonDerivative · entry 1

Caylor Mark A · CIK 0001559097 · Corp VP & Pres, Mission System

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 31,790.16

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: Shares expected to be issued in settlement of Restricted Performance Stock Rights ("RPSRs") granted under the 2011 Long-Term Incentive Stock Plan ("LTISP") on 2/17/16 with a valuation of performance measurement period ("measurement period") that ended 12/31/18. RPSRs to be settled at 115% of target. The shares are anticipated to be distributed into the participant's account on February 14, 2019.

SEC source: 0001225208-19-002766 · doc4.xml · derivative · entry 8

BUSH WESLEY G · CIK 0001216503 · Director · Chairman

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 50,392

Underlying: Common Stock · 41,763.4 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F4 · derivative.exercise_price: Each RPSR represents a contingent right to receive an equivalent number of shares of Issuer common stock, or, at the Issuer's election, cash or a combination of cash and Issuer common stock. The RPSRs vest if the applicable performance metric is satisfied for the relevant measurement period. Grants awarded pursuant to Rule 16b-3(d).

F1 · shares: Shares expected to be issued in settlement of Restricted Performance Stock Rights ("RPSRs") granted under the 2011 Long-Term Incentive Stock Plan ("LTISP") on 2/17/16 with a valuation of performance measurement period ("measurement period") that ended 12/31/18. RPSRs to be settled at 115% of target. The shares are anticipated to be distributed into the participant's account on February 14, 2019.

F4 · derivative.exercise_date: Each RPSR represents a contingent right to receive an equivalent number of shares of Issuer common stock, or, at the Issuer's election, cash or a combination of cash and Issuer common stock. The RPSRs vest if the applicable performance metric is satisfied for the relevant measurement period. Grants awarded pursuant to Rule 16b-3(d).

F4 · derivative.expiration_date: Each RPSR represents a contingent right to receive an equivalent number of shares of Issuer common stock, or, at the Issuer's election, cash or a combination of cash and Issuer common stock. The RPSRs vest if the applicable performance metric is satisfied for the relevant measurement period. Grants awarded pursuant to Rule 16b-3(d).

F7 · balance_after: Total amount includes 19,888 RPSRs granted on 2/13/18 with a measurement period ending on 12/31/20; and 30,504 RPSRs granted on 2/17/17 with a measurement period ending on 12/31/19.

SEC source: 0001225208-19-002766 · doc4.xml · derivative · entry 7

BUSH WESLEY G · CIK 0001216503 · Director · Chairman

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 92,155.4

Underlying: Common Stock · 5,447.4 shares

Expires not disclosed

F4 · derivative.exercise_price: Each RPSR represents a contingent right to receive an equivalent number of shares of Issuer common stock, or, at the Issuer's election, cash or a combination of cash and Issuer common stock. The RPSRs vest if the applicable performance metric is satisfied for the relevant measurement period. Grants awarded pursuant to Rule 16b-3(d).

F5 · shares: The RPSRs acquired include 5,447.40 vested RPSRs with respect to the measurement period ended 12/31/18 acquired due to settlement of the 2016 RPSRs held at 115% of the target award.

F4 · derivative.exercise_date: Each RPSR represents a contingent right to receive an equivalent number of shares of Issuer common stock, or, at the Issuer's election, cash or a combination of cash and Issuer common stock. The RPSRs vest if the applicable performance metric is satisfied for the relevant measurement period. Grants awarded pursuant to Rule 16b-3(d).

F4 · derivative.expiration_date: Each RPSR represents a contingent right to receive an equivalent number of shares of Issuer common stock, or, at the Issuer's election, cash or a combination of cash and Issuer common stock. The RPSRs vest if the applicable performance metric is satisfied for the relevant measurement period. Grants awarded pursuant to Rule 16b-3(d).

F6 · balance_after: Total amount includes 41,763.40 vested RPSRs granted under the LTISP on 2/17/16 with a measurement period ending on 12/31/18; 19,888 RPSRs granted on 2/13/18 with a measurement period ending on 12/31/20; and 30,504 RPSRs granted on 2/17/17 with a measurement period ending on 12/31/19.

SEC source: 0001225208-19-002766 · doc4.xml · nonDerivative · entry 2

BUSH WESLEY G · CIK 0001216503 · Director · Chairman

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 23,459.4

F2 · shares: Shares surrendered to issuer in payment of tax liability in connection with settlement of RPSRs in accordance with Rule 16b-3(e)

SEC source: 0001225208-19-002766 · doc4.xml · nonDerivative · entry 1

BUSH WESLEY G · CIK 0001216503 · Director · Chairman

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 41,763.4

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: Shares expected to be issued in settlement of Restricted Performance Stock Rights ("RPSRs") granted under the 2011 Long-Term Incentive Stock Plan ("LTISP") on 2/17/16 with a valuation of performance measurement period ("measurement period") that ended 12/31/18. RPSRs to be settled at 115% of target. The shares are anticipated to be distributed into the participant's account on February 14, 2019.

SEC source: 0001225208-19-002765 · doc4.xml · derivative · entry 5

Bedingfield Kenneth L · CIK 0001539147 · Corp VP, CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 16,080

Underlying: Common Stock · 3,830 shares

Expires not disclosed

F7 · derivative.exercise_price: Each Restricted Stock Right ("RSR") represents a contingent right to receive an equivalent number of shares of Issuer common stock, or, at the election of the Issuer's Compensation Committee, cash or a combination of cash and Issuer common stock. The RSRs were granted under the LTISP on 2/13/19 and will vest on 2/13/22.

F7 · derivative.exercise_date: Each Restricted Stock Right ("RSR") represents a contingent right to receive an equivalent number of shares of Issuer common stock, or, at the election of the Issuer's Compensation Committee, cash or a combination of cash and Issuer common stock. The RSRs were granted under the LTISP on 2/13/19 and will vest on 2/13/22.

F7 · derivative.expiration_date: Each Restricted Stock Right ("RSR") represents a contingent right to receive an equivalent number of shares of Issuer common stock, or, at the election of the Issuer's Compensation Committee, cash or a combination of cash and Issuer common stock. The RSRs were granted under the LTISP on 2/13/19 and will vest on 2/13/22.

F8 · balance_after: Total amount includes 3,830 RSRs granted under the LTISP on 2/13/19 that will vest on 2/13/22; 3,161 RSRs granted under the LTISP on 2/13/18 that will vest on 2/13/21; 4,146 RSRs granted under the LTISP on 2/17/17 that will vest on 2/17/20; and 4,943 RSRs granted under the LTISP on 2/17/16 that will vest on 2/17/19.

SEC source: 0001225208-19-002765 · doc4.xml · derivative · entry 4

Bedingfield Kenneth L · CIK 0001539147 · Corp VP, CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 25,913

Underlying: Common Stock · 12,529.25 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · derivative.exercise_price: Each RPSR represents a contingent right to receive an equivalent number of shares of Issuer common stock, or, at the Issuer's election, cash or a combination of cash and Issuer common stock. The RPSRs vest if the applicable performance metric is satisfied for the relevant measurement period. Grants awarded pursuant to Rule 16b-3(d).

F1 · shares: Shares expected to be issued in settlement of Restricted Performance Stock Rights ("RPSRs") granted under the 2011 Long-Term Incentive Stock Plan ("LTISP") on 2/17/16 with a valuation of performance measurement period ("measurement period") that ended 12/31/18. RPSRs to be settled at 115% of target. The shares are anticipated to be distributed into the participant's account on February 14, 2019.

F3 · derivative.exercise_date: Each RPSR represents a contingent right to receive an equivalent number of shares of Issuer common stock, or, at the Issuer's election, cash or a combination of cash and Issuer common stock. The RPSRs vest if the applicable performance metric is satisfied for the relevant measurement period. Grants awarded pursuant to Rule 16b-3(d).

F3 · derivative.expiration_date: Each RPSR represents a contingent right to receive an equivalent number of shares of Issuer common stock, or, at the Issuer's election, cash or a combination of cash and Issuer common stock. The RPSRs vest if the applicable performance metric is satisfied for the relevant measurement period. Grants awarded pursuant to Rule 16b-3(d).

F6 · balance_after: Total amount includes 9,038 RPSRs granted on 2/13/19 with a measurement period ending on 12/31/21; 6,961 RPSRs granted on 2/13/18 with a measurement period ending on 12/31/20; and 9,914 RPSRs granted on 2/17/17 with a measurement period ending on 12/31/19.

SEC source: 0001225208-19-002765 · doc4.xml · derivative · entry 3

Bedingfield Kenneth L · CIK 0001539147 · Corp VP, CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 38,442.25

Underlying: Common Stock · 10,672.25 shares

Expires not disclosed

F3 · derivative.exercise_price: Each RPSR represents a contingent right to receive an equivalent number of shares of Issuer common stock, or, at the Issuer's election, cash or a combination of cash and Issuer common stock. The RPSRs vest if the applicable performance metric is satisfied for the relevant measurement period. Grants awarded pursuant to Rule 16b-3(d).

F4 · shares: The RPSRs acquired include (i) 1,634.25 vested RPSRs with respect to the measurement period ended 12/31/18 acquired due to settlement of the 2016 RPSRs held at 115% of the target award and (ii) 9,038 unvested RPSRs granted under the LTISP on 2/13/19 with a measurement period ending on 12/31/21.

F3 · derivative.exercise_date: Each RPSR represents a contingent right to receive an equivalent number of shares of Issuer common stock, or, at the Issuer's election, cash or a combination of cash and Issuer common stock. The RPSRs vest if the applicable performance metric is satisfied for the relevant measurement period. Grants awarded pursuant to Rule 16b-3(d).

F3 · derivative.expiration_date: Each RPSR represents a contingent right to receive an equivalent number of shares of Issuer common stock, or, at the Issuer's election, cash or a combination of cash and Issuer common stock. The RPSRs vest if the applicable performance metric is satisfied for the relevant measurement period. Grants awarded pursuant to Rule 16b-3(d).

F5 · balance_after: Total amount includes 12,529.25 vested RPSRs granted under the LTISP on 2/17/16 with a measurement period ended on 12/31/18; 9,038 RPSRs granted on 2/13/19 with a measurement period ending on 12/31/21; 6,961 RPSRs granted on 2/13/18 with a measurement period ending on 12/31/20; and 9,914 RPSRs granted on 2/17/17 with a measurement period ending on 12/31/19.

SEC source: 0001225208-19-002765 · doc4.xml · nonDerivative · entry 2

Bedingfield Kenneth L · CIK 0001539147 · Corp VP, CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 39,899.82

F2 · shares: Shares surrendered to issuer in payment of tax liability in connection with settlement of RPSRs in accordance with Rule 16b-3(e)

SEC source: 0001225208-19-002765 · doc4.xml · nonDerivative · entry 1

Bedingfield Kenneth L · CIK 0001539147 · Corp VP, CFO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 45,426.82

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: Shares expected to be issued in settlement of Restricted Performance Stock Rights ("RPSRs") granted under the 2011 Long-Term Incentive Stock Plan ("LTISP") on 2/17/16 with a valuation of performance measurement period ("measurement period") that ended 12/31/18. RPSRs to be settled at 115% of target. The shares are anticipated to be distributed into the participant's account on February 14, 2019.

SEC source: 0001225208-19-002764 · doc4.xml · derivative · entry 5

Antkowiak Patrick M. · CIK 0001626333 · CVP & Chief S&T Ofcr

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,921

Underlying: Common Stock · 1,094 shares

Expires not disclosed

F7 · derivative.exercise_price: Each Restricted Stock Right ("RSR") represents a contingent right to receive an equivalent number of shares of Issuer common stock, or, at the election of the Issuer's Compensation Committee, cash or a combination of cash and Issuer common stock. The RSRs were granted under the LTISP on 2/13/19 and will vest on 2/13/22.

F7 · derivative.exercise_date: Each Restricted Stock Right ("RSR") represents a contingent right to receive an equivalent number of shares of Issuer common stock, or, at the election of the Issuer's Compensation Committee, cash or a combination of cash and Issuer common stock. The RSRs were granted under the LTISP on 2/13/19 and will vest on 2/13/22.

F7 · derivative.expiration_date: Each Restricted Stock Right ("RSR") represents a contingent right to receive an equivalent number of shares of Issuer common stock, or, at the election of the Issuer's Compensation Committee, cash or a combination of cash and Issuer common stock. The RSRs were granted under the LTISP on 2/13/19 and will vest on 2/13/22.

F8 · balance_after: Total amount includes 1,094 RSRs granted under the LTISP on 2/13/19 that will vest on 2/13/22; 903 RSRs granted under the LTISP on 2/13/18 that will vest on 2/13/21; 1,276 RSRs granted under the LTISP on 2/17/17 that will vest on 2/17/20; and 1,648 RSRs granted under the LTISP on 2/17/16 that will vest on 2/17/19.

SEC source: 0001225208-19-002764 · doc4.xml · derivative · entry 4

Antkowiak Patrick M. · CIK 0001626333 · CVP & Chief S&T Ofcr

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,621

Underlying: Common Stock · 4,175.65 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · derivative.exercise_price: Each RPSR represents a contingent right to receive an equivalent number of shares of Issuer common stock, or, at the Issuer's election, cash or a combination of cash and Issuer common stock. The RPSRs vest if the applicable performance metric is satisfied for the relevant measurement period. Grants awarded pursuant to Rule 16b-3(d).

F1 · shares: Shares expected to be issued in settlement of Restricted Performance Stock Rights ("RPSRs") granted under the 2011 Long-Term Incentive Stock Plan ("LTISP") on 2/17/16 with a valuation of performance measurement period ("measurement period") that ended 12/31/18. RPSRs to be settled at 115% of target. The shares are anticipated to be distributed into the participant's account on February 14, 2019.

F3 · derivative.exercise_date: Each RPSR represents a contingent right to receive an equivalent number of shares of Issuer common stock, or, at the Issuer's election, cash or a combination of cash and Issuer common stock. The RPSRs vest if the applicable performance metric is satisfied for the relevant measurement period. Grants awarded pursuant to Rule 16b-3(d).

F3 · derivative.expiration_date: Each RPSR represents a contingent right to receive an equivalent number of shares of Issuer common stock, or, at the Issuer's election, cash or a combination of cash and Issuer common stock. The RPSRs vest if the applicable performance metric is satisfied for the relevant measurement period. Grants awarded pursuant to Rule 16b-3(d).

F6 · balance_after: Total amount includes 2,582 RPSRs granted on 2/13/19 with a measurement period ending on 12/31/21; 1,989 RPSRs granted on 2/13/18 with a measurement period ending on 12/31/20; and 3,050 RPSRs granted on 2/17/17 with a measurement period ending on 12/31/19.

SEC source: 0001225208-19-002764 · doc4.xml · derivative · entry 3

Antkowiak Patrick M. · CIK 0001626333 · CVP & Chief S&T Ofcr

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 11,796.65

Underlying: Common Stock · 3,126.65 shares

Expires not disclosed

F3 · derivative.exercise_price: Each RPSR represents a contingent right to receive an equivalent number of shares of Issuer common stock, or, at the Issuer's election, cash or a combination of cash and Issuer common stock. The RPSRs vest if the applicable performance metric is satisfied for the relevant measurement period. Grants awarded pursuant to Rule 16b-3(d).

F4 · shares: The RPSRs acquired include (i) 544.65 vested RPSRs with respect to the measurement period ended 12/31/18 acquired due to settlement of the 2016 RPSRs held at 115% of the target award; and (ii) 2,582 unvested RPSRs granted under the LTISP on 2/13/19 with a measurement period ending on 12/31/21.

F3 · derivative.exercise_date: Each RPSR represents a contingent right to receive an equivalent number of shares of Issuer common stock, or, at the Issuer's election, cash or a combination of cash and Issuer common stock. The RPSRs vest if the applicable performance metric is satisfied for the relevant measurement period. Grants awarded pursuant to Rule 16b-3(d).

F3 · derivative.expiration_date: Each RPSR represents a contingent right to receive an equivalent number of shares of Issuer common stock, or, at the Issuer's election, cash or a combination of cash and Issuer common stock. The RPSRs vest if the applicable performance metric is satisfied for the relevant measurement period. Grants awarded pursuant to Rule 16b-3(d).

F5 · balance_after: Total amount includes 4,175.65 vested RPSRs granted under the LTISP on 2/17/16 with a measurement period ended on 12/31/18; 2,582 RPSRs granted on 2/13/19 with a measurement period ending on 12/31/21; 1,989 RPSRs granted on 2/13/18 with a measurement period ending on 12/31/20; and 3,050 RPSRs granted on 2/17/17 with a measurement period ending on 12/31/19.

SEC source: 0001225208-19-002764 · doc4.xml · nonDerivative · entry 2

Antkowiak Patrick M. · CIK 0001626333 · CVP & Chief S&T Ofcr

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,044.37

F2 · shares: Shares surrendered to issuer in payment of tax liability in connection with settlement of RPSRs in accordance with Rule 16b-3(e).

SEC source: 0001225208-19-002764 · doc4.xml · nonDerivative · entry 1

Antkowiak Patrick M. · CIK 0001626333 · CVP & Chief S&T Ofcr

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 9,546.37

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: Shares expected to be issued in settlement of Restricted Performance Stock Rights ("RPSRs") granted under the 2011 Long-Term Incentive Stock Plan ("LTISP") on 2/17/16 with a valuation of performance measurement period ("measurement period") that ended 12/31/18. RPSRs to be settled at 115% of target. The shares are anticipated to be distributed into the participant's account on February 14, 2019.

SEC source: 0001225208-19-002763 · doc4.xml · derivative · entry 2

Addison Ann M · CIK 0001682425 · Corp VP & Chief HR Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,788

Underlying: Common Stock · 1,751 shares

Expires not disclosed

F4 · derivative.exercise_price: Each Restricted Stock Right ("RSR") represents a contingent right to receive an equivalent number of shares of Issuer common stock, or, at the election of the Issuer's Compensation Committee, cash or a combination of cash and Issuer common stock. The RSRs were granted under the LTISP on 2/13/19 and will vest on 2/13/22.

F4 · derivative.exercise_date: Each Restricted Stock Right ("RSR") represents a contingent right to receive an equivalent number of shares of Issuer common stock, or, at the election of the Issuer's Compensation Committee, cash or a combination of cash and Issuer common stock. The RSRs were granted under the LTISP on 2/13/19 and will vest on 2/13/22.

F4 · derivative.expiration_date: Each Restricted Stock Right ("RSR") represents a contingent right to receive an equivalent number of shares of Issuer common stock, or, at the election of the Issuer's Compensation Committee, cash or a combination of cash and Issuer common stock. The RSRs were granted under the LTISP on 2/13/19 and will vest on 2/13/22.

F5 · balance_after: Total amount includes 1,751 RSRs granted under the LTISP on 2/13/19 that will vest on 2/13/22; 891 RSRs granted under the LTISP on 10/30/18 that will vest on 10/30/21; and 5,146 RSRs granted under the LTISP on 10/30/18 that will vest on 10/30/19.

SEC source: 0001225208-19-002763 · doc4.xml · derivative · entry 1

Addison Ann M · CIK 0001682425 · Corp VP & Chief HR Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 6,748

Underlying: Common Stock · 4,132 shares

Expires not disclosed

F1 · derivative.exercise_price: Each RPSR represents a contingent right to receive an equivalent number of shares of Issuer common stock, or, at the Issuer's election, cash or a combination of cash and Issuer common stock. The RPSRs vest if the applicable performance metric is satisfied for the relevant measurement period. Grants awarded pursuant to Rule 16b-3(d).

F2 · shares: The RPSRs acquired include 4,132 unvested RPSRs granted under the 2011 Long-Term Incentive Stock Plan ("LTISP") on 2/13/19 with a measurement period ending on 12/31/21.

F1 · derivative.exercise_date: Each RPSR represents a contingent right to receive an equivalent number of shares of Issuer common stock, or, at the Issuer's election, cash or a combination of cash and Issuer common stock. The RPSRs vest if the applicable performance metric is satisfied for the relevant measurement period. Grants awarded pursuant to Rule 16b-3(d).

F1 · derivative.expiration_date: Each RPSR represents a contingent right to receive an equivalent number of shares of Issuer common stock, or, at the Issuer's election, cash or a combination of cash and Issuer common stock. The RPSRs vest if the applicable performance metric is satisfied for the relevant measurement period. Grants awarded pursuant to Rule 16b-3(d).

F3 · balance_after: Total amount includes 4,132 RPSRs granted on 2/13/19 with a measurement period ending on 12/31/21; and 2,616 RPSRs granted on 10/30/18 with a measurement period ending on 12/31/20.

SEC source: 0001225208-19-001943 · doc4.xml · nonDerivative · entry 1

Hardesty Michael A · CIK 0001569355 · Corp VP, Controller & CAO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,405.64

SEC source: 0001225208-19-000450 · doc4.xml · derivative · entry 3

Larson Blake E · CIK 0001313857 · Corp VP & Pres, NGIS

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,336

Underlying: Common Stock · 5,505 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · derivative.exercise_price: Each RSR represents a contingent right to receive an equivalent number of shares of Issuer common stock, or, at the election of the Issuer's Compensation Committee, cash or a combination of cash and Issuer common stock.

F1 · shares: Shares issued upon vesting of Restricted Stock Rights ("RSRs") granted under the 2011 Long-Term Incentive Stock Plan ("LTISP") on 6/13/18 that vested on 12/31/18.

F3 · derivative.exercise_date: Each RSR represents a contingent right to receive an equivalent number of shares of Issuer common stock, or, at the election of the Issuer's Compensation Committee, cash or a combination of cash and Issuer common stock.

F1 · derivative.expiration_date: Shares issued upon vesting of Restricted Stock Rights ("RSRs") granted under the 2011 Long-Term Incentive Stock Plan ("LTISP") on 6/13/18 that vested on 12/31/18.

F4 · balance_after: Total amount includes 2,831 RSRs granted under the LTISP on 6/13/18 that will vest on 6/13/21 and 5,505 RSRs granted under the LTISP on 6/13/18 that will vest on 12/31/19.

SEC source: 0001225208-19-000450 · doc4.xml · nonDerivative · entry 2

Larson Blake E · CIK 0001313857 · Corp VP & Pres, NGIS

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,596

F2 · shares: Shares surrendered to issuer in payment of tax liability in connection with vesting of RSRs in accordance with Rule 16b-3(e).

SEC source: 0001225208-19-000450 · doc4.xml · nonDerivative · entry 1

Larson Blake E · CIK 0001313857 · Corp VP & Pres, NGIS

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,505

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: Shares issued upon vesting of Restricted Stock Rights ("RSRs") granted under the 2011 Long-Term Incentive Stock Plan ("LTISP") on 6/13/18 that vested on 12/31/18.

SEC source: 0001225208-19-000448 · doc4.xml · nonDerivative · entry 1

KRAPEK KARL J · CIK 0001238288 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 26,380

F1 · kind: Represents shares of common stock deferred into a stock unit account, including dividends, pursuant to the Northrop Grumman 2011 Long-Term Incentive Stock Plan in a transaction exempt pursuant to Rule 16b-3.

F1 · shares: Represents shares of common stock deferred into a stock unit account, including dividends, pursuant to the Northrop Grumman 2011 Long-Term Incentive Stock Plan in a transaction exempt pursuant to Rule 16b-3.

F2 · balance_after: Amount includes (i) 3,979 shares of common stock and (ii) 22,401 shares of common stock held in a stock unit account pursuant to the Northrop Grumman 2011 Long-Term Incentive Stock Plan and the 1993 Stock Plan for Non-Employee Directors.

SEC source: 0001225208-19-000447 · doc4.xml · nonDerivative · entry 1

Brown Marianne · CIK 0001600605 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,345

F1 · kind: Represents shares of common stock deferred into a stock unit account, including dividends, pursuant to the Northrop Grumman 2011 Long-Term Incentive Stock Plan in a transaction exempt pursuant to Rule 16b-3.

F1 · shares: Represents shares of common stock deferred into a stock unit account, including dividends, pursuant to the Northrop Grumman 2011 Long-Term Incentive Stock Plan in a transaction exempt pursuant to Rule 16b-3.

F2 · balance_after: Represents shares of common stock held in a stock unit account pursuant to the Northrop Grumman 2011 Long-Term Incentive Stock Plan.

SEC source: 0001225208-18-016312 · doc4.xml · derivative · entry 1

Caylor Mark A · CIK 0001559097 · Corp VP & Pres, Mission System

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 12,125

Underlying: Common Stock · 1,655 shares

Expires not disclosed

F1 · derivative.exercise_price: Each Restricted Stock Right ("RSR") represents a contingent right to receive an equivalent number of shares of Issuer common stock, or, at the election of the Issuer's Compensation Committee, cash or a combination of cash and Issuer common stock.

F1 · derivative.exercise_date: Each Restricted Stock Right ("RSR") represents a contingent right to receive an equivalent number of shares of Issuer common stock, or, at the election of the Issuer's Compensation Committee, cash or a combination of cash and Issuer common stock.

F1 · derivative.expiration_date: Each Restricted Stock Right ("RSR") represents a contingent right to receive an equivalent number of shares of Issuer common stock, or, at the election of the Issuer's Compensation Committee, cash or a combination of cash and Issuer common stock.

F2 · balance_after: Total amount includes 4,120 unvested RSRs granted under the 2011 Long-Term Incentive Stock Plan ("LTISP") on 2/17/16 that will vest on 2/17/19; 3,189 unvested RSRs granted under the LTISP on 2/17/17 that will vest on 2/17/20; 3,161 unvested RSRs granted under the LTISP on 2/13/18 that will vest on 2/13/21; and 1,655 unvested RSRs granted under the LTISP on 12/04/18 that will vest on 12/04/21. Grants awarded pursuant to Rule 16b-3(d).

SEC source: 0001225208-18-015525 · doc4.xml · nonDerivative · entry 1

Kalan Lesley A · CIK 0001725864 · Corp VP, Government Relations

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 10,752.33

F1 · shares: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

SEC source: 0001225208-18-015278 · doc4.xml · nonDerivative · entry 1

Purvis Shawn N · CIK 0001725609 · CVP, President, Enterprise Svc

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,519.34

F1 · shares: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

SEC source: 0001225208-18-015230 · doc4.xml · nonDerivative · entry 5

BUSH WESLEY G · CIK 0001216503 · Director · Chairman and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

F1 · shares: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

F6 · price: Represents the weighted average sale price of $274.56 rounded to the nearest hundredth. The highest price at which the shares were sold was $274.97 and the lowest price at which the shares were sold was $274.08. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote in this Form 4.

SEC source: 0001225208-18-015230 · doc4.xml · nonDerivative · entry 4

BUSH WESLEY G · CIK 0001216503 · Director · Chairman and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,601

F1 · shares: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

F5 · price: Represents the weighted average sale price of $275.37 rounded to the nearest hundredth. The highest price at which the shares were sold was $275.68 and the lowest price at which the shares were sold was $275.04. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote in this Form 4.

SEC source: 0001225208-18-015230 · doc4.xml · nonDerivative · entry 3

BUSH WESLEY G · CIK 0001216503 · Director · Chairman and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 6,101

F1 · shares: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

F4 · price: Represents the weighted average sale price of $273.46 rounded to the nearest hundredth. The highest price at which the shares were sold was $273.88 and the lowest price at which the shares were sold was $273.255. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote in this Form 4.

SEC source: 0001225208-18-015230 · doc4.xml · nonDerivative · entry 2

BUSH WESLEY G · CIK 0001216503 · Director · Chairman and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,101

F1 · shares: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

F3 · price: Represents the weighted average sale price of $276.32 rounded to the nearest hundredth. The highest price at which the shares were sold was $276.77 and the lowest price at which the shares were sold was $276.13. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote in this Form 4.

SEC source: 0001225208-18-015230 · doc4.xml · nonDerivative · entry 1

BUSH WESLEY G · CIK 0001216503 · Director · Chairman and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 9,600

F1 · shares: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person.

F2 · price: Represents the weighted average sale price of $272.69 rounded to the nearest hundredth. The highest price at which the shares were sold was $272.85 and the lowest price at which the shares were sold was $272.53 The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote in this Form 4.

SEC source: 0001225208-18-015178 · doc4.xml · derivative · entry 4

Kalan Lesley A · CIK 0001725864 · Corp VP, Government Relations

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,071

Underlying: Common Stock · 2,285 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · derivative.exercise_price: Each RSR represents a contingent right to receive an equivalent number of shares of Issuer common stock, or, at the election of the Issuer's Compensation Committee, cash or a combination of cash and Issuer common stock.

F1 · shares: Shares issued upon vesting of Restricted Stock Rights ("RSRs") granted under the 2011 Long-Term Incentive Stock Plan ("LTISP") on 11/1/16 that vested on 11/1/18.

F3 · derivative.exercise_date: Each RSR represents a contingent right to receive an equivalent number of shares of Issuer common stock, or, at the election of the Issuer's Compensation Committee, cash or a combination of cash and Issuer common stock.

F1 · derivative.expiration_date: Shares issued upon vesting of Restricted Stock Rights ("RSRs") granted under the 2011 Long-Term Incentive Stock Plan ("LTISP") on 11/1/16 that vested on 11/1/18.

F4 · balance_after: Total amount includes 733 RSRs granted under the LTISP on 2/17/16 that will vest on 2/17/19; 893 RSRs granted under the LTISP on 2/17/17 that will vest on 2/17/20; and 1,445 RSRs granted under the LTISP on 2/13/18 that will vest on 2/13/21.