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Stockholders' Equity
 3 Months Ended
Apr. 30, 2024
Equity [Abstract]  
Stockholders' Equity Stockholders' Equity
Equity Incentive Plans

We maintain three stock-based compensation plans: the 2018 Equity Incentive Plan (the “2018 Plan”), the Amended and Restated 2011 Equity Incentive Plan and the Amended and Restated 2003 Stock Plan.

As of April 30, 2024, 47.0 million shares of our common stock were available for issuance under the 2018 Plan.

Restricted Stock Units

Restricted stock unit (“RSU”) activity for the three months ended April 30, 2024 was as follows:
(in thousands, except per share data)Number of UnitsWeighted-Average Grant Date Fair Value
Unvested at January 31, 202426,700 $60.70 
Granted1,192 54.47 
Vested(2,136)73.52 
Canceled(1,469)64.35 
Unvested at April 30, 202424,287 $58.79 

As of April 30, 2024, our total unrecognized compensation cost related to RSUs was $1.0 billion. We expect to recognize this expense over the remaining weighted-average period of approximately 2.88 years.

As of April 30, 2024, the grant date fair value of unvested RSUs subject to market-based and performance-based vesting conditions (“PSU”) was $116.6 million. The number of RSUs granted or canceled included in the table above reflects shares that could be eligible to vest at 100% of target for PSUs and includes adjustments for over or under achievement for PSUs granted in prior periods.

Stock Options

Option activity for the three months ended April 30, 2024 was as follows:
(in thousands, except years and per share data)Number of OptionsWeighted-Average Exercise Price Per ShareWeighted-Average Remaining Contractual Term (Years)Aggregate Intrinsic Value
Outstanding at January 31, 2024, all vested and exercisable1,385 $17.39 2.63$60,117 
Exercised(56)11.43 
Outstanding at April 30, 2024, all vested and exercisable1,329 $17.64 2.48$51,643 

As of April 30, 2024, there was no remaining unrecognized compensation cost related to stock option grants.
Employee Stock Purchase Plan

The Employee Stock Purchase Plan (“ESPP”) allows eligible employees to purchase shares of our common stock at a discounted price, normally through payroll deductions, subject to the terms of the ESPP and applicable law. As of April 30, 2024, 12.1 million shares of our common stock were reserved for issuance under the ESPP.

Compensation expense related to the ESPP was $3.0 million and $4.2 million for the three months ended April 30, 2024 and 2023.

Stock Repurchase Program

In March 2022, our board of directors authorized a stock repurchase program of up to $200.0 million of our outstanding common stock. Subsequently, in September 2023, our board of directors authorized an increase to its existing stock repurchase program for an additional amount of up to $300.0 million of our outstanding common stock.

During the three months ended April 30, 2024, we repurchased and cancelled 2.5 million shares of common stock at an average price of $58.78 per share, for an aggregate amount of $149.1 million. During the three months ended April 30, 2023, we repurchased and cancelled 0.7 million shares of common stock at an average price of $57.06 per share, for an aggregate amount of $40.5 million.