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STOCK-BASED COMPENSATION PLANS
9 Months Ended
May 31, 2021
Share-based Payment Arrangement [Abstract]  
Stock-based compensation plans
The Company's stock-based compensation plans are described in Note 15, Stock-Based Compensation Plans, to the consolidated financial statements in the 2020 Form 10-K. In general, restricted stock units granted in 2021 vest ratably over a period of three years. Subject to the achievement of performance targets established by the Compensation Committee of CMC's Board of Directors, performance stock units granted in 2021 vest after a period of three years.

During the nine months ended May 31, 2021 and 2020, the Company granted the following awards under its stock-based compensation plans:
May 31, 2021May 31, 2020
(in thousands, except per share data)Shares GrantedWeighted Average Grant Date Fair ValueShares GrantedWeighted Average Grant Date Fair Value
Equity method1,512 $20.51 1,521 $18.32 
Liability method324 N/A426 N/A

During the three and nine months ended May 31, 2021, the Company recorded expense of $3.2 million and $5.0 million, respectively, for mark-to-market adjustments on liability awards, and recorded immaterial mark-to-market adjustments on liability awards for the three and nine months ended May 31, 2020. At May 31, 2021, the Company had outstanding 711,148 equivalent shares accounted for under the liability method. The Company expects 675,590 equivalent shares to vest.

The following table summarizes total stock-based compensation expense, including fair value remeasurements, which was primarily included in selling, general and administrative expenses on the Company's condensed consolidated statements of earnings:
Three Months Ended May 31,Nine Months Ended May 31,
(in thousands)2021202020212020
Stock-based compensation expense$13,800 $6,170 $35,558 $21,975