X0306 4 2020-01-24 0 0000320575 PIONEER ENERGY SERVICES CORP PES 0001185173 LOCKE STACY 1250 N E LOOP 410 #1000 SAN ANTONIO TX 78209 1 1 0 0 President & CEO Common Stock 2020-01-24 4 M 0 82987 A 1217239 D Common Stock 2020-01-24 4 F 0 24605 .04 D 1192634 D Common Stock 2020-01-24 4 M 0 82987 A 1275621 D Common Stock 2020-01-24 4 D 0 82987 .03 D 1192634 D Common Stock 2020-01-25 4 M 0 88509 A 1281143 D Common Stock 2020-01-25 4 F 0 26243 .04 D 1254900 D Common Stock 25000 I By 2010 Trust Common Stock 180334 I By Locke Children's Trust Restricted Stock Units 2020-01-24 4 M 0 82987 0 D Common Stock 82987 165974 D Phantom Stock Units 2020-01-24 2020-01-24 4 M 0 82987 D 2020-01-24 2020-01-24 Common Stock 82987 165974 D Restricted Stock Units 2020-01-25 4 M 0 88509 0 D Common Stock 88509 88510 D Restricted Stock Units convert into common stock on a one-for-one basis. The reporting person is the sole trustee and primary beneficiary of the Wm Stacy Locke Trust of 2010 (the "2010 Trust"). On January 24, 2019, the reporting person was granted 248,961 restricted stock units, vesting one-third on January 24,2020, one-third on January 24,2021, and the final one-third on January 24,2022. On January 25, 2018, the reporting person was granted 265,528 restricted stock units, vesting one-third on January 25,2019, one-third on January 25,2020, and the final one-third on January 25,2021. Each Phantom Stock Unit is the economic equivalent of one share of the Company's common stock. The reporting person settled his shares of phantom stock units in cash. The cash payment is based upon the average closing price of the Company's common stock for the last fourteen (14) days in December 2019, which was $.03. Kurt Forkheim, Attorney-in-fact for Wm. Stacy Locke 2020-01-28