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v3.23.3

Stock-based compensation - Stock option activity (Details) - USD ($) $ / shares in Units, $ in Thousands |  | 1 Months Ended | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | ---
May 31, 2021 | Sep. 30, 2023 | Dec. 31, 2022 | Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Mar. 31, 2023
Number of Shares |  |  |  |  |  |  |
Outstanding at beginning of the period (in shares) |  |  |  |  |  | 7,454,828 |
Granted (in shares) | 125,000 | 125,000 | 82,500 |  |  | 2,064,526 |
Exercised (in shares) |  |  |  |  |  | (163,356) |
Cancelled (in shares) |  |  |  |  |  | (200,611) |
Outstanding at end of the period (in shares) |  | 9,155,387 |  | 9,155,387 |  | 9,155,387 | 7,454,828
Options exercisable (in shares) |  | 5,400,346 |  | 5,400,346 |  | 5,400,346 |
Options vested and expected to vest (in shares) |  |  |  |  |  | 9,155,387 |
Weighted Average Exercise Price |  |  |  |  |  |  |
Outstanding at beginning of the period (in dollars per share) |  |  |  |  |  | $ 17.24 |
Granted (in dollars per share) |  |  |  |  |  | 18.08 |
Exercised (in dollars per share) |  |  |  |  |  | 10.76 |
Cancelled (in dollars per share) |  |  |  |  |  | 24.73 |
Outstanding at end of the period (in dollars per share) |  | $ 17.38 |  | $ 17.38 |  | 17.38 | $ 17.24
Options exercisable (in dollars per share) |  | 15.28 |  | 15.28 |  | 15.28 |
Options vested and expected to vest (in dollars per share) |  | $ 17.38 |  | $ 17.38 |  | $ 17.38 |
Weighted Average Contractual Term (Years) |  |  |  |  |  |  |
Outstanding (years) |  |  |  |  |  | 6 years 9 months 10 days | 6 years 10 months 17 days
Options exercisable (years) |  |  |  |  |  | 5 years 7 months 6 days |
Options vested and expected to vest (years) |  |  |  |  |  | 6 years 9 months 10 days |
Aggregate Intrinsic Value |  |  |  |  |  |  |
Outstanding |  | $ 27,858 |  | $ 27,858 |  | $ 27,858 | $ 31,244
Options exercisable |  | 26,556 |  | 26,556 |  | 26,556 |
Options vested and expected to vest |  | 27,858 |  | $ 27,858 |  | 27,858 |
Stock-Based Compensation |  |  |  |  |  |  |
Weighted average grant-date fair value per share of stock options granted |  |  |  | $ 12.19 | $ 12.20 |  |
Stock options |  |  |  |  |  |  |
Stock-Based Compensation |  |  |  |  |  |  |
Total unrecognized compensation cost |  | $ 46,400 |  | $ 46,400 |  | $ 46,400 |
Expenses expected to be recognized over a weighted average remaining period |  |  |  |  |  | 2 years 8 months 12 days |

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