Share-based compensation (Tables)

9 Months Ended

Sep. 30, 2022

Share-based compensation

Schedule of company's stock option plan

		Weighted
		Average
		Exercise
Stock Option Plan Totals	Shares	Price
Outstanding at December 31, 2020	5,329,515	$	1.06
-Cancelled	(133,257)	$	2.02
-Exercised	(3,076,489)	$	1.16
-Granted (1)	484,254	$	1.82
Outstanding at December 31, 2021	2,604,023	$	1.03
-Cancelled	(11,781)	$	4.20
-Exercised	(382,371)	$	1.16
-Granted	379,070	$	4.30
Outstanding at September 30, 2022, unaudited	2,588,941	$	1.47

(1) Options to purchase 463,754 shares were granted in 2021, all of which were vested immediately in 2021. In addition, 20,500 stock appreciation rights were granted in December 2021 with a six- month vesting period.

Schedule of weighted average contractual life in years and the weighted average exercise price

		Weighted
		Average		Weighted
		Remaining		Average
	Number of	Contractual		Exercise
	Options	Life		Price
Options outstanding and vested	2,419,701	5.7	years	$	1.31