X0206 3 2015-07-01 0 0001486957 BWX Technologies, Inc. BWXT 0001645828 Bash Benjamin H. 800 MAIN STREET, 4TH FLOOR LYNCHBURG VA 24504 0 1 0 0 See Remarks Common Stock 7856 D Common Stock 475 I 401(k) Plan Stock Option (right to buy) 10.58 2016-03-05 Common Stock 2691 D Stock Option (right to buy) 24.55 2017-03-04 Common Stock 1169 D Stock Option (right to buy) 34.55 2018-03-04 Common Stock 3015 D Stock Option (right to buy) 26.59 2019-03-05 Common Stock 2847 D Stock Option (right to buy) 26.80 2020-03-04 Common Stock 5343 D Stock Option (right to buy) 32.69 2021-03-03 Common Stock 5484 D Stock Option (right to buy) 30.92 2025-03-02 Common Stock 9498 D Restricted Stock Unit 0.00 2016-03-04 Common Stock 381 D Restricted Stock Unit 0.00 2017-03-03 Common Stock 678 D Restricted Stock Unit 0.00 2018-03-02 Common Stock 1759 D Restricted Stock Unit 0.00 2018-03-02 Common Stock 1704 D Based on number of units held in the BWXT Thrift Plan and the fair market value of BWXT common stock as of June 25, 2015. Number of underlying shares and exercise price are subject to adjustment pursuant to the Employee Matters Agreement, dated as of June 8, 2015, between Issuer and Babcock & Wilcox Enterprises, Inc. in connection with Issuer's spin-off of its Power Generation business on June 30, 2015. 100% of the stock options are vested. 100% of the stock options are vested. 100% of the stock options are vested. 100% of the stock options are vested. Two-thirds of the stock options are vested. The remaining one-third of the stock options will vest March 4, 2016. One-third of the stock options are vested. The remaining two-thirds of the stock options will vest in two equal annual installments beginning March 3, 2016. Stock options vest in three equal annual installments beginning March 2, 2016. 100% of RSUs vest on March 4, 2016. RSUs vest in two equal annual installments beginning March 3, 2016. 100% of RSUs cliff vest on March 2, 2018. RSUs vest in three equal annual installments beginning March 2, 2016. Senior Vice President, Human Resources Exhibit List: Exhibit 24 - Power of Attorney /s/ Benjamin H. Bash, by Theresa B. Taylor, attorney-in-fact 2015-07-06