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v3.25.1

Stock-based Compensation - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2024 | Dec. 31, 2023 | May 09, 2024
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |
Options, outstanding (in shares) | 9,470,382 | 11,426,653 |
Stock option awards not vested (in shares) | 6,213,769 |  |
Common Class A |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |
Reserved for future issuance (in shares) |  |  | 10,432,749
Share price (in dollars per share) | $ 21.23 |  |
Legacy Oklo 2016 Plan |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |
Award vesting rate (as a percent) | 20.00% |  |
Award vesting period | 5 years |  |
Award vesting commencement period | 1 year |  |
Award expiration period | 10 years |  |
Options, outstanding (in shares) | 9,470,382 |  |
Cost not yet recognized | $ 9,635 |  |
Stock option awards not vested (in shares) | 483,748 |  |
Cost not yet recognized, period for recognition | 3 years 8 months 26 days |  |
Legacy Oklo 2016 Plan | Common Class A |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |
Reserved for future issuance (in shares) |  |  | 9,470,382
The 2024 Plan |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |
Award expiration period | 10 years |  |
Non-option equity instruments, outstanding (in shares) | 1,386,998 |  |
Reserved for future issuance (in shares) | 15,872,516 |  |
The 2024 Plan | Common Class A |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |
Reserved for future issuance (in shares) |  |  | 15,872,516
Employee Stock Option | Common Class A |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |
Reserved for future issuance (in shares) |  |  | 10,432,749
Fair value of options granted during the period | $ 1,108 | $ 11,343 |
Grant date intrinsic value (in dollars per share) | $ 3.15 | $ 2.27 |
Options exercised in period, intrinsic value | $ 28,537 | $ 1,112 |
Options vested in period, fair value | 2,916 | $ 239 |
Options exercisable, intrinsic value | 64,930 |  |
Options, vested and expected to vest, exercisable, aggregate intrinsic value | $ 182,604 |  |
Restricted Stock Units (RSUs) |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |
Non-option equity instruments, outstanding (in shares) | 1,386,998 |  |
Vested (in shares) | 134,832 |  |
Nonvested (in shares) | 1,252,166 | 0 |
Granted (in shares) | 1,390,298 |  |
Vested in period, aggregate intrinsic value | $ 1,049 |  |
Restricted Stock Units (RSUs) | The 2024 Plan |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |
Cost not yet recognized, period for recognition | 2 years 11 months 19 days |  |
Cost not yet recognized | $ 9,128 |  |
Employee Stock |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |
Award expiration period | 20 years |  |
Granted (in shares) | 0 |  |
Employee Stock | Common Class A |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |
Reserved for future issuance (in shares) |  |  | 2,441,926

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