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Stock-based compensation (Tables)
 6 Months Ended
Jun. 30, 2024
Share-Based Payment Arrangement [Abstract]  
Schedule of Share-Based Compensation Expense
The Company recognized stock-based compensation expense for all equity arrangements as follows:
Three Months Ended June 30,Six Months Ended June 30,
2024202320242023
(in thousands)
Cost of revenue:
Subscription
$2,983 $2,715 $5,611 $4,982 
Services
451 323 863 632 
Sales and marketing8,285 9,076 14,674 16,575 
Research and development6,969 6,401 12,400 11,434 
General and administrative7,595 11,668 13,314 16,110 
$26,283 $30,183 $46,862 $49,733 
Schedule of Stock-Option Activity
The table below summarizes return target option activity for the six months ended June 30, 2024:
OptionsWeighted‑
Average
Exercise
Price		Weighted‑
Average
Remaining
Contractual
Term (Years)		Aggregate
Intrinsic
Value
(in thousands)
Outstanding, December 31, 20232,594,622 $6.61 4.3$29,697 
Exercised(102,763)6.01 1,285 
Outstanding, June 30, 20242,491,859 $6.64 3.9$24,571 
Options exercisable at June 30, 20242,491,859 $6.64 3.9$24,571 
Vested or expected to vest at June 30, 20242,491,859 $6.64 3.9$24,571 
The table below summarizes the service-based option activity for the six months ended June 30, 2024:
OptionsWeighted‑
Average
Exercise
Price		Weighted‑
Average
Remaining
Contractual
Term (Years)		Aggregate
Intrinsic
Value
(in thousands)
Outstanding, December 31, 20231,048,885 $5.54 3.2$13,129 
Exercised
(200,875)5.67 2,828 
Outstanding, June 30, 2024848,010 $5.51 3.1$9,317 
Options exercisable at June 30, 2024848,010 $5.51 3.1$9,317 
Vested or expected to vest at June 30, 2024848,010 $5.51 3.1$9,317 
Schedule of Restricted Stock Units Stock Option Activity
RSU activity for the six months ended June 30, 2024 was as follows:
UnitsWeighted-Average Grant Date Fair Value (per share)
Outstanding, December 31, 202310,551,679 $24.49 
Granted4,984,772 17.72 
Vested(2,015,812)25.08 
Forfeited(788,420)24.61 
Outstanding, June 30, 202412,732,219 $21.74 
Schedule of ESPP Activity Activity under the 2021 ESPP for the six months ended June 30, 2024 was as follows:
Shares of common stock issued209,047 
Weighted-average purchase price per share$13.06 
Total proceeds to the Company (in thousands)$2,729 
Schedule of Fair Value Assumptions The Company used the following assumptions in the Black-Scholes option pricing model to estimate the fair value:
Expected term0.5 years
Expected volatility40.90%
Risk-free interest rate5.43%
Expected dividend yield—%