Stockholders' Equity (Tables)

12 Months Ended

Jan. 31, 2026

Equity [Abstract]

Schedule of Share of Common Stock Reserved for Future Issuance

We have reserved the following shares of common stock, on an as-if converted basis, for future issuance as follows:

	January 31,
(in thousands)	2026	2025
RSUs outstanding	23,792	27,268
Options issued and outstanding	3	83
Remaining shares available for future issuance under the Equity Incentive Plans	46,611	39,387
Remaining shares available for future issuance under the ESPP	13,115	11,819
Total shares of common stock reserved	83,521	78,557

Schedule of Share-based Compensation, Activity

Shares available for grant under the 2018 Plan for the year ended January 31, 2026 were as follows:

(in thousands)	Year Ended January 31, 2026
Available at beginning of fiscal year	39,387
Awards authorized	10,124
Shares granted	(9,336)
Shares canceled/expired	2,928
Shares withheld for taxes	3,508
Available at end of fiscal year	46,611

Schedule of RSU Activity

RSU activity for the year ended January 31, 2026 was as follows:

(in thousands, except per share data)	Number of Units	Weighted-Average Grant Date Fair Value
Unvested at January 31, 2025	27,268	$	57.62
Granted	9,336	83.61
Vested	(9,884)	63.98
Canceled	(2,928)	64.48
Unvested at January 31, 2026	23,792	$	64.34

Schedule of Valuation Assumptions

We calculated the fair value of the RSU with market conditions using a Monte Carlo option-pricing model based on the following assumptions:

	Year Ended January 31,
	2026		2025		2024
Risk-free interest rate	3.77	%	3.85% - 4.41%		4.12	%
Expected dividend yield	—	%	—	%	—	%
Expected life (in years)	2.9		2.8 - 3.0		3.0
Expected volatility	55	%	69% - 70%		71	%

Schedule of ESPP Valuation Assumptions

We calculated the fair value of the ESPP purchase right using the Black-Scholes option-pricing model, based on the following assumptions:

	Year Ended January 31,
	2026		2025		2024
Risk-free interest rate	3.81% - 4.14%		4.45% - 5.35%		4.93%-5.59%
Expected dividend yield	—	%	—	%	—	%
Expected life of purchase right (in years)	0.5		0.5		0.5
Expected volatility	54% - 56%		32% - 41%		31% - 76%

Schedule of Share Repurchase Activity

The following table summarizes the share repurchase activity under our stock repurchase program:

	Year Ended January 31,
(in thousands)	2026		2025		2024
Number of shares repurchased	11,840		10,954		3,058
Aggregate purchase price (1)	$	874,858	$	684,989	$	145,515

(1) The repurchase amount includes the 1% excise tax under the Inflation Reduction Act (“IRA”).