X0306 4 2020-07-28 1 0001704235 Quintana Energy Services Inc. "QES" 0001563798 Stanford Geoffrey C 1415 LOUISIANA STREET, SUITE 2900 HOUSTON TX 77002 0 1 0 0 See Remarks Common stock 2020-07-28 4 D 0 43878 D 0 D Restricted Stock Unit 2020-07-28 4 D 0 27233 D Common Stock 27233 0 D Performance Share Unit 2020-07-28 4 A 0 24600 A Common Stock 24600 30350 D Performance Share Unit 2020-07-28 4 D 0 30350 D Common Stock 30350 0 D On July 28, 2020, pursuant to the Agreement and Plan of Merger, dated May 3, 2020 (the "Merger Agreement"), by and among Quintana Energy Services Inc. ("QES"), KLX Energy Services Holdings, Inc. ("KLXE"), Krypton Intermediate LLC, and Kypton Merger Sub Inc. ("Merger Sub"), Merger Sub merged with and into QES (the "Merger"), with QES surviving the Merger as the wholly owned subsidiary of KLXE. Pursuant to the Merger Agreement, at the effective time of the Merger, each share of QES's common stock was converted into, and became exchangeable for, 0.0969 shares of KLXE common stock. On July 27, 2020 (the last trading day prior to consummation of the Merger and KLXE's 1-for-5 reverse stock split), the closing price of one share of KLXE common stock was $2.00 and the closing price of one share of QES common stock was $0.93. Pursuant to the Merger Agreement, at the effective time of the Merger, each outstanding QES restricted stock unit award subject to time-based vesting was cancelled and converted into a KLXE restricted stock unit award equal to the number of outstanding QES restricted stock units multiplied by 0.0969. The KLXE restricted stock unit award will otherwise continue on the same terms and conditions as were applicable to the QES restricted stock unit award. Pursuant to the Merger Agreement, at the effective time of the Merger, each outstanding QES performance share unit award was cancelled and converted into a KLXE restricted stock unit award equal to the number of outstanding QES performance share units that were earned based on actual achievement of the applicable performance goals in accordance with the Merger Agreement multiplied by 0.0969. (Continued from Footnote 3) With respect to such KLXE restricted stock unit award, the portion based on a QES performance share unit award granted in 2019 determined to have been earned based on discretionary performance goals and the portion based on a QES performance share unit award granted in 2020 subject to a strategic performance goals, in each case, will be settled in cash following the vesting of such KLXE restricted stock unit. The KLXE restricted stock unit award will otherwise continue on the same terms and conditions as were applicable to the QES performance share unit award (other than any performance-based vesting conditions). Vice President and Chief Accounting Officer /s/ Max L. Bouthillette, attorney-in-fact 2020-07-28