Involved parties include U.S. corporations (public and private) offering these plans, current/former employees who exercised ISOs or first transferred ESPP shares in 2025, and the IRS. Law firms such as Haynes Boone, Orrick, Goodwin, DLA Piper, and others issued reminders in January 2026[1][3][4][5]. Key agencies are the IRS (receives filings via FIRE or IRIS systems); relevant Code sections are 422 (ISOs), 423 (ESPPs), and 6039 (reporting)[1][2][3][4][5][7].
Context traces to statutory mandates unchanged for years, triggered by 2025 activity; firms now remind due to approaching deadlines adjusted for weekends: employee statements by February 2, 2026; IRS paper filings by March 2, 2026; electronic by March 31, 2026 (mandatory for 10+ forms per type, down from prior 250 threshold). Paper forms must be scannable (orderable from IRS); electronic filers need Transmitter Control Codes; extensions via Form 8809[1][2][3][4][5].
**Newsworthy in early 2026 as deadlines loom (statements just days away from January publications), risking penalties for non-compliance amid lower electronic thresholds and stock plan complexities like multiple transactions or brokerage transfers counting as "first transfers."[1][2][3][4][5]