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Stock-Based Compensation - Narrative (Details) - USD ($) $ / shares in Units, $ in Millions | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | ---
Dec. 31, 2025 | Dec. 31, 2024 | Dec. 31, 2023 | Nov. 30, 2025 | Jul. 31, 2025 | Dec. 31, 2019 | Dec. 31, 2017
Stock-based compensation |  |  |  |  |  |  |
Common stock, par value (in dollars per share) | $ 0.001 | $ 0.001 |  |  |  |  |
Stock Options |  |  |  |  |  |  |
Stock-based compensation |  |  |  |  |  |  |
Options expiration period (in years) | 10 years |  |  |  |  |  |
Granted (in dollars per share) | $ 5.85 | $ 14.43 | $ 10.63 |  |  |  |
Intrinsic value of stock options exercised | $ 0.0 | $ 1.9 | $ 1.9 |  |  |  |
Stock Options | Tranche One |  |  |  |  |  |  |
Stock-based compensation |  |  |  |  |  |  |
Vesting period (in years) | 4 years |  |  |  |  |  |
Vesting percentage 1 (as a percent) | 25.00% |  |  |  |  |  |
Stock Options | Tranche Two |  |  |  |  |  |  |
Stock-based compensation |  |  |  |  |  |  |
Vesting period (in years) | 3 years |  |  |  |  |  |
Vesting percentage 1 (as a percent) | 75.00% |  |  |  |  |  |
Restricted Stock Units (RSUs) |  |  |  |  |  |  |
Stock-based compensation |  |  |  |  |  |  |
Granted (in dollars per share) | $ 7.76 | $ 21.51 | $ 15.90 |  |  |  |
Aggregate fair value of restricted stock awards | $ 13.0 | $ 10.3 | $ 10.4 |  |  |  |
Restricted stock units and stock options |  |  |  |  |  |  |
Stock-based compensation |  |  |  |  |  |  |
Total unrecognized compensation cost related to unvested stock awards | $ 30.7 |  |  |  |  |  |
Period of recognition of unrecognized compensation cost | 2 years 6 months |  |  |  |  |  |
2017 Plan |  |  |  |  |  |  |
Stock-based compensation |  |  |  |  |  |  |
Shares authorized under the plan (in shares) |  |  |  |  |  |  | 1,000,000.0
Annual increase in the shares available for grant under the plan (as a percent of shares of common stock outstanding) | 4.00% |  |  |  |  |  |
Shares outstanding (in shares) | 6,200,000 |  |  |  |  |  |
Shares available for grant under the plan (in shares) | 4,900,000 |  |  |  |  |  |
2017 Plan | Stock Options |  |  |  |  |  |  |
Stock-based compensation |  |  |  |  |  |  |
Shares authorized under the plan (in shares) |  |  |  |  |  |  | 2,500,000
2017 ESPP |  |  |  |  |  |  |
Stock-based compensation |  |  |  |  |  |  |
Shares authorized under the plan (in shares) |  |  |  |  |  | 600,000 |
Annual increase in the shares available for grant under the plan (as a percent of shares of common stock outstanding) |  |  |  |  |  | 1.00% |
Shares available for grant under the plan (in shares) | 1,900,000 |  |  |  |  |  |
Employee stock purchase plan (in shares) | 200,000 | 100,000 | 100,000 |  |  |  |
Inducement Plan |  |  |  |  |  |  |
Stock-based compensation |  |  |  |  |  |  |
Shares authorized under the plan (in shares) |  |  |  |  | 500,000 |  |
2021 Akoya Equity Incentive Plan | Restricted Stock Units (RSUs) |  |  |  |  |  |  |
Stock-based compensation |  |  |  |  |  |  |
Shares authorized under the plan (in shares) |  |  |  |  | 200,000 |  |
Akoya Inducement Plan | Restricted Stock Units (RSUs) |  |  |  |  |  |  |
Stock-based compensation |  |  |  |  |  |  |
Shares authorized under the plan (in shares) |  |  |  |  | 300,000 |  |
2025 Inducement Plan |  |  |  |  |  |  |
Stock-based compensation |  |  |  |  |  |  |
Common stock, issuance (in shares) |  |  |  | 900,000 |  |  |
Common stock, par value (in dollars per share) |  |  |  | $ 0.001 |  |  |

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