| Schedule of stock option activity under our equity plans |
A summary of share-settled stock option activity under our equity plans is as follows:
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Number of Options |
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Weighted Average Exercise Price |
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Weighted Average Remaining Contractual Term (Years) |
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Aggregate Intrinsic Value |
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Balance, December 31, 2021 |
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10,589,010 |
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$ |
14.85 |
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7.39 |
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$ |
22,473,835 |
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Granted |
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688,240 |
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$ |
3.96 |
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Exercised |
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(50,000 |
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$ |
3.28 |
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$ |
81,300 |
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Balance, March 31, 2022 |
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11,227,250 |
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$ |
14.24 |
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7.32 |
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$ |
11,642,645 |
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Granted |
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221,892 |
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$ |
4.07 |
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Exercised |
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(10,000 |
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$ |
3.28 |
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$ |
18,300 |
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Balance, June 30, 2022 |
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11,439,142 |
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$ |
14.05 |
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7.13 |
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$ |
5,637,529 |
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Exercisable |
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4,473,003 |
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$ |
4.84 |
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4.77 |
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$ |
5,114,474 |
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Vested and expected to vest |
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11,439,142 |
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$ |
14.05 |
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7.13 |
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$ |
5,637,529 |
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| Schedule of share based compensation activity |
The following table sets forth the allocation of our stock-based compensation expense.
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Three Months Ended June 30, |
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Six Months Ended June 30, |
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(in thousands) |
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2022 |
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2021 |
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2022 |
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2021 |
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Cost of revenue |
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$ |
10 |
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$ |
28 |
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$ |
39 |
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$ |
53 |
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Selling, general and administrative |
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12,707 |
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12,245 |
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24,572 |
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18,026 |
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Research and development |
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1,830 |
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1,758 |
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3,634 |
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2,617 |
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Total stock-based compensation |
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$ |
14,547 |
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$ |
14,031 |
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$ |
28,245 |
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$ |
20,696 |
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