{"dataset":"sec-form-4-business-calendar-2026-2030","reviewed_at":"2026-07-31","calculator_input_coverage":{"from":"2026-01-01","through":"2030-12-23"},"methodology":"The standard Form 4 estimate counts the first and second SEC business days after the transaction date. Saturdays, Sundays, and listed federal holidays are excluded. The 2026 closures are transcribed from the SEC EDGAR calendar; 2027-2030 scheduled federal holidays are transcribed from OPM. 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