---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-24-234122"
form_type: "8-K"
ticker: "SPHR"
cik: "0001795250"
company_name: "Sphere Entertainment Co."
filed_at: "2024-10-08T23:59:59+00:00"
generated_at: "2026-05-30T18:12:09.980892+00:00"
event_type: "leadership"
sentiment: "negative"
materiality_score: 0.65
calibrated_materiality_score: 0.65
confidence: "high"
source: SEC EDGAR
---

# Sphere Entertainment CFO David Byrnes to depart; search for successor underway

## Summary
- David F. Byrnes, EVP, CFO and Treasurer, will leave Sphere Entertainment; a search for a new CFO has commenced.
- Byrnes will remain in his current role for an interim period to facilitate a smooth transition.
- Upon departure, Byrnes will receive severance benefits per his employment agreement.
- Byrnes served as CFO since December 2023 and previously held the role at MSG Entertainment.

## SEC filing metadata
- accession: 0001193125-24-234122
- form_type: 8-K
- ticker: SPHR
- cik: 0001795250
- company_name: Sphere Entertainment Co.
- filed_at: 2024-10-08T23:59:59+00:00
- event_type: leadership
- sentiment: negative
- materiality_score: 0.65
- calibrated_materiality_score: 0.65
- confidence: high
- sec_items: 5.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1795250/000119312524234122/0001193125-24-234122-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1795250/000119312524234122/d103145d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-24-234122
- JSON: https://secwatch.observer/filing/0001193125-24-234122.json
- Plain text: https://secwatch.observer/filing/0001193125-24-234122.txt

## Key facts
- Executive change
  David F. Byrnes departed as Executive Vice President, Chief Financial Officer and Treasurer at Sphere Entertainment Co..
  - Action: will be leaving
  - Role: Executive Vice President, Chief Financial Officer and Treasurer
  source text: On October 8, 2024, Sphere Entertainment Co. (the “Company”) announced that Mr. David F. Byrnes, the Company’s Executive Vice President, Chief Financial Officer and Treasurer, will be leaving the Company.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1795250/000119312524234122/0001193125-24-234122-index.htm

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