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Stock-Based Compensation (Tables)
9 Months Ended
Jun. 30, 2023
Share-Based Payment Arrangement [Abstract]  
Schedule of Stock-Based Compensation Expense
The following table shows stock-based compensation expense that is included in the consolidated results of operations (in thousands):
Three months ended June 30,Nine months ended June 30,
2023202220232022
Cost of sales$160 $125 $463 $342 
Sales and marketing1,089 660 3,012 1,828 
Research and development469 252 1,386 890 
General and administrative1,801 1,106 4,991 3,342 
Stock-based compensation before income taxes3,519 2,143 9,852 6,402 
Income tax benefit(760)(460)(2,096)(1,360)
Stock-based compensation after income taxes$2,759 $1,683 $7,756 $5,042 
Schedule of Stock Option Activity
The following table summarizes our stock option activity (in thousands, except per common share amounts):
Options OutstandingWeighted Average Exercise PriceWeighted Average Contractual Term (in years)Aggregate Intrinsic Value (1)
Balance on September 30, 20221,790 $17.29
Granted66 40.63
Exercised(182)22.77
Forfeited / Canceled(34)20.76
Balance on June 30, 20231,640 $18.434.1$34,471 
Exercisable on June 30, 20231,046 $15.993.5$24,481 
(1) The aggregate intrinsic value represents the total pre-tax intrinsic value, based on our closing stock price of $39.39 as of June 30, 2023, which would have been received by the option holders had all option holders exercised their options as of that date.
14. STOCK-BASED COMPENSATION (CONTINUED)
The intrinsic value of an option is the amount by which the fair value of the underlying stock exceeds its exercise price. The total intrinsic value of all options exercised during the nine months ended June 30, 2023 and 2022 was $4.1 million and $15.6 million, respectively.
Schedule of Valuation Assumptions
The following table shows the weighted average fair value, which was determined based upon the fair value of each option on the grant date utilizing the Black-Scholes option-pricing model and the related assumptions:
Nine months ended June 30,
20232022
Weighted average per option grant date fair value$19.88$10.03
Assumptions used for option grants:
Risk free interest rate
3.50% - 3.98%
1.25% - 3.00%
Expected term6.00 years6.00 years
Expected volatility46%
45% - 46%
Weighted average volatility46%46%
Expected dividend yield
Schedule of Nonvested Restricted Stock Units
The following table presents a summary of our non-vested restricted stock units and performance stock units as of June 30, 2023 and changes during the nine months then ended (in thousands, except per common share amounts):
RSUsPSUs
Number of AwardsWeighted Average Grant Date Fair ValueNumber of AwardsWeighted Average Grant Date Fair Value
Nonvested on September 30, 2022742 $19.14 27 $22.69 
Granted457 40.07 113 40.66 
Vested(276)17.42 (5)22.93 
Canceled(34)26.69 — — 
Nonvested on June 30, 2023889 $30.14 135 $37.72