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Stock-based compensation (Tables)

6 Months Ended

Jun. 30, 2026

Share-Based Payment Arrangement [Abstract]

Schedule of Black-Scholes Option-Pricing Model

The following table presents, on a weighted average basis, the assumptions used in the Black-Scholes option-pricing model to determine the grant-date fair value of stock options granted:

									Three Months Ended June 30,									Six Months Ended June 30,
															2026			2025						2026			2025
Risk-free interest rate															4.3		%	4.2		%				3.9		%	4.3		%
Expected term (in years)															5.5			5.9						6.0			6.0
Expected volatility															40.5		%	53.2		%				42.6		%	51.7		%
Expected dividend yield															0		%	0		%				0		%	0		%

Schedule of Stock Option Activity

The following table summarizes the Company’s stock option activity since December 31, 2025:

			Number of shares						Weighted average exercise price						Weighted average remaining contractual term						Aggregate intrinsic value
															(in years)						(in thousands)
Outstanding as of December 31, 2025			6,539,263						$	2.43					6.00						$	8,653
Granted			1,446,500						3.91
Exercised			(158,736)						1.16												$	231
Expired			(11,400)						1.17
Forfeited			(291,039)						3.16
Outstanding as of June 30, 2026			7,524,588						$	2.72					5.76						$	2,951
Options vested and expected to vest as of June 30, 2026			7,524,588						$	2.73					5.76						$	2,951
Options exercisable as of June 30, 2026			5,317,431						$	2.49					4.45						$	2,709

Schedule of Restricted Stock Units Activity

The following table summarizes the Company’s restricted stock units activity since December 31, 2025:

			Number of shares						Weighted average grant date fair value
Unvested as of December 31, 2025			2,795,976						$	2.39
Granted			2,199,825						2.99
Vested			(1,004,341)						2.31
Forfeited			(362,796)						2.74
Unvested as of June 30, 2026			3,628,664						$	2.75

Schedule of ESPP Black-Scholes Option-Pricing Model

The following weighted average assumptions were used in the calculation of fair value of shares under the 2021 ESPP at the grant date for both the six months ended June 30, 2026 and 2025:

						Six Months Ended June 30,
						2026						2025
Risk-free interest rate						3.7		%				4.3		%
Expected term (in years)						0.5						0.5
Expected volatility						41.5		%				51.5		%
Expected dividend yield						0		%				0		%

Schedule of Stock-Based Compensation Expense

Stock-based compensation expense was classified in the condensed consolidated statements of operations as follows (in thousands):

			Three Months Ended June 30,												Six Months Ended June 30,
			2026						2025						2026						2025
Cost of revenue			$	145					$	120					$	234					$	213
Research and development			106						50						171						190
Sales and marketing			147						111						236						200
General and administrative			923						937						1,903						1,657
Total stock-based compensation expense			$	1,321					$	1,218					$	2,544					$	2,260

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Tabular disclosure of the changes in outstanding nonvested restricted stock shares.

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