---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-24-096655"
form_type: "8-K"
ticker: "SIRI"
cik: "0000908937"
company_name: "SIRIUS XM HOLDINGS INC."
filed_at: "2024-09-04T23:59:59+00:00"
generated_at: "2026-05-31T06:32:19.368899+00:00"
event_type: "m_and_a"
sentiment: "neutral"
materiality_score: 0.75
calibrated_materiality_score: 0.75
confidence: "high"
source: SEC EDGAR
---

# Liberty Media and Sirius XM announce final exchange ratio for split-off merger; closing Sept 9

## Summary
- Final exchange ratio: 0.8375 New Sirius shares per Liberty SiriusXM share; Sirius XM holders get 0.1 New Sirius per share.
- Split-off and merger expected to close on Sept 9, 2024; New Sirius shares to trade on Nasdaq as SIRI on Sept 10.
- Pro forma: ~339.1M shares outstanding; ~81% owned by former Liberty holders, ~19% by former Sirius XM minority.
- New public company will operate under Sirius XM name and brand; cash paid for fractional shares.
- Conditions must be satisfied or waived; transaction creates a simplified ownership structure.

## SEC filing metadata
- accession: 0001104659-24-096655
- form_type: 8-K
- ticker: SIRI
- cik: 0000908937
- company_name: SIRIUS XM HOLDINGS INC.
- filed_at: 2024-09-04T23:59:59+00:00
- event_type: m_and_a
- sentiment: neutral
- materiality_score: 0.75
- calibrated_materiality_score: 0.75
- confidence: high
- sec_items: 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/908937/000110465924096655/0001104659-24-096655-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/908937/000110465924096655/tm2422920d1_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-24-096655
- JSON: https://secwatch.observer/filing/0001104659-24-096655.json
- Plain text: https://secwatch.observer/filing/0001104659-24-096655.txt

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