---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-24-155272"
form_type: "8-K/A"
ticker: "ILMN"
cik: "0001110803"
company_name: "ILLUMINA, INC."
filed_at: "2024-06-06T23:59:59+00:00"
generated_at: "2026-06-01T05:47:55.929266+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.6
calibrated_materiality_score: 0.6
confidence: "high"
source: SEC EDGAR
---

# Illumina clarifies GRAIL spin-off dates: distribution effective June 24, 2024

## Summary
- Distribution effective 12:01 A.M. NYC time on June 24; GRAIL begins regular-way trading June 25 under ticker GRAL.
- GRAIL stock trades when-issued on Nasdaq as GRALV from June 12 through June 24.
- Illumina common has two markets June 12–24: ILMN (with GRAIL entitlement) and ILMNV (ex-distribution). After June 25, only ILMN trades.
- Spin-off is a pro rata dividend of at least 85.5% of GRAIL shares to Illumina stockholders.

## SEC filing metadata
- accession: 0001193125-24-155272
- form_type: 8-K/A
- ticker: ILMN
- cik: 0001110803
- company_name: ILLUMINA, INC.
- filed_at: 2024-06-06T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.6
- calibrated_materiality_score: 0.6
- confidence: high
- sec_items: 8.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1110803/000119312524155272/0001193125-24-155272-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1110803/000119312524155272/d811905d8ka.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-24-155272
- JSON: https://secwatch.observer/filing/0001193125-24-155272.json
- Plain text: https://secwatch.observer/filing/0001193125-24-155272.txt

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.