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Stock-Based Compensation
 9 Months Ended
Sep. 30, 2024
Share-Based Payment Arrangement [Abstract]  
Stock-Based Compensation Stock-Based Compensation
Stock Options
There were no new stock option grants during the nine months ended September 30, 2024. As of September 30, 2024, there was no aggregate intrinsic value for our outstanding or exercisable stock options because the closing stock price as of September 30, 2024 was below the cost to exercise these options. No stock options were exercised during the nine months ended September 30, 2024. The weighted average remaining contractual term for the outstanding and exercisable stock options as of September 30, 2024 was approximately 2.5 years.
A summary of the stock option activity for the nine months ended September 30, 2024 is presented below (in thousands, except for weighted average price):
Number of SharesWeighted
Average
Exercise
Price
Outstanding at January 1, 2024180 $14.00 
Granted— $— 
Exercised— $— 
Forfeited— $— 
Expired(1)$14.00 
Outstanding at September 30, 2024179 $14.00 
Exercisable at September 30, 2024179 $14.00 
Restricted Stock Units
On May 11, 2023, the Company's stockholders approved the Amended and Restated ProPetro Holding Corp. 2020 Long Term Incentive Plan (the "A&R 2020 Incentive Plan"), which had been previously approved by the Board and replaced the ProPetro Holding Corp. 2020 Long Term Incentive Plan.
During the nine months ended September 30, 2024, we granted 1,762,177 RSUs to employees, officers and directors pursuant to the A&R 2020 Incentive Plan, which generally vest ratably over a three-year vesting period or a two-year period at one-third after first year anniversary and two-thirds after the second year anniversary, in the case of awards to employees and officers, and generally vest in full after one year, in the case of awards to directors. RSUs are subject to restrictions on transfer and are generally subject to a risk of forfeiture if the award recipient ceases to be an employee or director of the Company prior to vesting of the award. Each RSU represents the right to receive one share of common stock. The grant date fair value of the RSUs is based on the closing share price of our common stock on the date of grant. As of September 30, 2024, the total unrecognized compensation expense for all RSUs was approximately $19.3 million, and is expected to be recognized over a weighted average period of approximately 1.8 years.
The following table summarizes RSUs activity during the nine months ended September 30, 2024 (in thousands, except for fair value):
Number of
Shares		Weighted
Average
Grant Date
Fair Value
Outstanding at January 1, 20242,264 $9.81 
Granted1,762 $7.42 
Vested(737)$9.57 
Forfeited(46)$8.42 
Canceled— $— 
Outstanding at September 30, 20243,243 $8.59 
Performance Share Units
During the nine months ended September 30, 2024, we granted 637,266 PSUs to certain key employees and officers as new awards under the A&R 2020 Incentive Plan. Each PSU earned represents the right to receive either one share of common stock or, as determined by the A&R 2020 Incentive Plan administrator in its sole discretion, a cash amount equal to fair market value of one share of common stock or amount of cash on the day immediately preceding the settlement date. The actual number of shares of common stock that may be issued under the PSUs ranges from 0% up to a maximum of 200% of the target number of PSUs granted to the participant, based on our total shareholder return ("TSR") relative to a designated peer group, generally at the end of a three year period. In addition to the TSR conditions, vesting of the PSUs is generally subject to the recipient’s continued employment through the end of the applicable performance period. Compensation expense is recorded ratably over the corresponding requisite service period. The grant date fair value of PSUs is determined using a Monte Carlo simulation. Grant recipients do not have any shareholder rights until performance relative to the peer group has been determined following the completion of the performance period and shares have been issued.
The following table summarizes information about PSUs activity during the nine months ended September 30, 2024 (in thousands, except for weighted average fair value):
Period
Granted		Target Shares Outstanding at January 1, 2024Target
Shares
Granted		Target Shares VestedTarget
Shares
Forfeited		Target Shares Outstanding at September 30, 2024
2021620 — — (620)— 
2022306 — — — 306 
2023438 — — — 438 
2024— 637 — — 637 
Total1,364 637 — (620)1,381 
Weighted Average Fair Value Per Share$15.80 $8.22 $— $14.73 $12.79 
The total stock-based compensation expense for the nine months ended September 30, 2024 and 2023 for all stock awards was $13.0 million and $10.6 million, respectively, and the associated tax benefit related thereto was $2.7 million and $2.2 million,
respectively. The total unrecognized stock-based compensation expense as of September 30, 2024 was approximately $26.6 million, and is expected to be recognized over a weighted average period of approximately 1.7 years.