XML 41 R32.htm IDEA: XBRL DOCUMENT
v3.24.3

Stock-Based Compensation (Tables) | 9 Months Ended
--- | ---
Sep. 30, 2024
Share-Based Payment Arrangement [Abstract] |
Schedule of Stock-Based Compensation Expense | The amounts included in the consolidated statements of operations relating to stock-based compensation associated with the two equity incentive plans, cash awards, and CSBUs are as follows:
|  | Three Months Ended September 30, |  |  | Nine Months Ended September 30, |
|  | 2024 |  |  | 2023 |  |  | 2024 |  |  | 2023 |
Research and development expenses |  | $ | 1,711,231 |  |  | $ | 403,904 |  |  | $ | 3,609,590 |  |  | $ | 3,457,642 |
General and administrative expenses |  |  | 1,514,563 |  |  |  | 385,313 |  |  | $ | 3,100,572 |  |  | $ | 3,095,470 |
Total stock-based compensation expense |  | $ | 3,225,794 |  |  | $ | 789,217 |  |  | $ | 6,710,162 |  |  | $ | 6,553,112 |
Summary of Activity Relating to Stock Options | The table below summarizes activity relating to stock options under the incentive plans for the nine months ended September 30, 2024:
|  | Number of Shares |  |  | Weighted Average Exercise Price |  |  | Weighted Average Contractual Term (Years) |  |  | Aggregate Intrinsic Value(a) |
Outstanding at December 31, 2023 |  |  | 5,868,816 |  |  | $ | 6.40 |  |  | 6.44 |  |  | $ | 3,996 |
Granted |  |  | 2,376,328 |  |  | $ | 3.67 |  |  |  |  |  |  | — |
Expired |  |  | (179,897 | ) |  | $ | 7.90 |  |  |  |  |  |  | — |
Forfeitures |  |  | (31,506 | ) |  | $ | 4.49 |  |  |  |  |  |  | — |
Outstanding at September 30, 2024 |  |  | 8,033,741 |  |  | $ | 5.57 |  |  |  | 6.94 |  |  | $ | 7,387,843 |
Exercisable at September 30, 2024 |  |  | 5,116,768 |  |  | $ | 6.23 |  |  |  | 5.76 |  |  | $ | 3,509,500 |
(a) The aggregate intrinsic value in the above table was calculated on the positive difference, if any, between the closing price per share of the Company’s common stock on September 30, 2024 of $5.39 and the per share exercise price of the underlying options.
Summary of Activity Relating to Restricted Stock Units | The table below summarizes activity relating to restricted stock units (RSUs) for the nine months ended September 30, 2024:
|  | Number of Shares |  |  | Weighted-Average Grant Date Fair Value |
Outstanding at December 31, 2023 |  |  | 944,497 |  |  | $ | 5.30 |
Settled in common stock |  |  | (340,488 | ) |  |  | 5.10 |
Outstanding at September 30, 2024 |  |  | 604,009 |  |  | $ | 5.41 |
Summary of Employee Stock Purchase Plan Activity | A summary of the weighted-average grant-date fair value and total stock-based compensation expense recognized related to the 2016 ESPP are as follows:
| Nine Months Ended September 30, |
| 2024 |  |  | 2023 |
Weighted-average grant-date fair value per share | $ | 1.32 |  |  | $ | 3.09 |
Total stock-based compensation expense | $ | 14,199 |  |  | $ | 38,931 |

X
- Definition Schedule of stock option exercise activity table. + References No definition available. + Details
Name: | aldx_ScheduleOfStockOptionExerciseActivityTableTextBlock
Namespace Prefix: | aldx_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_DisclosureOfCompensationRelatedCostsSharebasedPaymentsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of allocation of amount expensed and capitalized for award under share-based payment arrangement to statement of income or comprehensive income and statement of financial position. Includes, but is not limited to, corresponding line item in financial statement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
Name: | us-gaap_ScheduleOfEmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of employee stock purchase plan activity. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (g) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
Name: | us-gaap_ScheduleOfShareBasedCompensationEmployeeStockPurchasePlanActivityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the number and weighted-average grant date fair value for restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited during the year. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
Name: | us-gaap_ScheduleOfShareBasedCompensationRestrictedStockUnitsAwardActivityTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration