Tax3921
FDX / Data Structures / Tax3921
Form 3921, Exercise of an Incentive Stock Option Under Section 422(b), from TRANSFEROR (1st-2nd boxes as issuer) to EMPLOYEE (3rd-4th boxes as recipient)
Extends and inherits all fields from Tax
Tax3921 Properties
| # | Id | Type | Description |
|---|---|---|---|
| 1 | accountNumber | string | Account number |
| 2 | optionGrantDate | DateString | |
| 3 | optionExerciseDate | DateString | |
| 4 | exercisePrice | number | Box 3, Exercise price per share |
| 5 | exerciseMarketValue | number | Box 4, Fair market value per share on exercise date |
| 6 | numberOfShares | number | Box 5, Number of shares transferred |
| 7 | corporation | TaxParty |
Tax3921 Usage:
- TaxData tax3921
FDX Tax Schema and Model Files
To assist developers, we have made available a copy of the FDX tax schema files (yaml) and related model files in csharp, java, python, ruby, and typescript languages at GitHub for a nominal fee. Request GitHub repository access or more information .
SDK (Java Software Development Kit)
A java SDK is available to generate Tax3921 documents as:
- FDX JSON
- QR PDFs and
- Intelligent Tax Documents®
See this GitHub page and contact us at info@taxdataexchange.org to license the SDK.
Introductory SDK pricing is available through November 28, 2025.
