Strike Price 409a Staleness Months Checker

Observed completed calendar-month409Avaluation age plus independent material-event flag; not official safe-harbor validity or assumption no event from elapsed time. Caller independently verifies policy, evidence, dates and applicability; not legal/compliance advice or causal business-success prediction.

Description

Valuation age is an elapsed calendar measure, while material events provide separate review evidence.

Valuation age is an elapsed calendar measure, while material events provide separate review evidence.1

A chosen month threshold does not establish 409A compliance or safe-harbor validity. Use this tool to calculate strike Price 409a Staleness Months Checker from the supplied measurements and assumptions.

When to use Strike Price 409a Staleness Months Checker

Use this tool to calculate strike Price 409a Staleness Months Checker from the supplied measurements and assumptions. Establish the business period, event definitions, jurisdiction or agreement edition, and independently documented evidence or comparison rubric.

How to use Strike Price 409a Staleness Months Checker and understand its results

  1. Establish the business period, event definitions, jurisdiction or agreement edition, and independently documented evidence or comparison rubric.
  2. Enter callerValuationDate, observedGrantDate, callerMaxCompletedMonths, independentMaterialEventSinceValuation, using the field meanings and rules below, then run the tool.
  3. Read completedValuationAgeMonths, callerStalenessReview. Interpret the fields using their units, signs and evidence conventions below.
  4. If input validation fails, correct the reported field and run again. Before applying the result, check reference scope, model assumptions and any missing evidence or placeholder values.
Input fieldMeaningValue typeRequirement
callerValuationDateCaller valuation datestringRequired
observedGrantDateObserved grant datestringRequired
callerMaxCompletedMonthsCaller max completed monthsnumberRequired
independentMaterialEventSinceValuationIndependent material event since valuationbooleanRequired

Enter real YYYY-MM-DD dates with grant no earlier than valuation, integer caller threshold 1–120 months and an explicit material-event boolean. Completed months are year/month difference minus one when the grant day number is below the valuation day number; there is no end-of-month anniversary adjustment. Flag age≥threshold or materialEvent=true. No legal safe-harbor validity is determined.

months=12×(grantYear−valuationYear)+grantMonth−valuationMonth−[grantDay<valuationDay]; review=months≥limit or materialEvent

Use the exact units, boundary rules, ordering and missing-evidence conventions above.

Output fieldMeaningValue type
completedValuationAgeMonthsCompleted Valuation Age Months; follow the units, sign, ordering and evidence convention stated abovenumber
callerStalenessReviewCaller Staleness Review; follow the units, sign, ordering and evidence convention stated aboveboolean
json
{
  "input": {
    "callerValuationDate": "2025-01-15",
    "observedGrantDate": "2026-01-14",
    "callerMaxCompletedMonths": 12,
    "independentMaterialEventSinceValuation": true
  },
  "output": {
    "completedValuationAgeMonths": 11,
    "callerStalenessReview": true
  }
}

Limitations and assumptions

A chosen month threshold does not establish 409A compliance or safe-harbor validity. Interpretation depends on the units, sampling scope and exact model described above.

All listed fields require explicit values. Unexpected fields, incorrect types, nonfinite numbers and sparse evidence arrays fail validation; the specific bounds and alignment requirements are stated above. Extremely large inputs or outputs can also be rejected. An input error is distinct from a successful result reporting false, no matches or missing evidence.

Alternative or Complementary methods

Use Cliff Early Exercise 83b Election 30 day Checker for this related task: An election timing screen starts with an independently eligible property-transfer event and an applicable calendar window.

Use Rsu vs Options Private Company Context Lookup when its separate inputs and assumptions fit the question: Private-company RSUs and options have different contractual structures and conditions.

References

  1. Strike Price 409a Staleness Months Checker — tool.io

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