---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-24-274286"
form_type: "8-K"
ticker: "SPHR"
cik: "0001795250"
company_name: "Sphere Entertainment Co."
filed_at: "2024-12-10T23:59:59+00:00"
generated_at: "2026-05-29T05:14:39.252895+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.4
calibrated_materiality_score: 0.4
confidence: "high"
source: SEC EDGAR
---

# Sphere Entertainment appoints Gregory Brunner interim CFO; annual meeting approves all proposals

## Summary
- Gregory Brunner appointed interim CFO effective Dec 9, 2024; remains SVP, Controller and PAO.
- CFO David F. Byrnes' departure previously announced Oct 8, 2024; transition now complete.
- Annual meeting re-elected all directors: Class A elected 4, Class B elected 12 (Dolan family).
- Ratified auditor for transition period ending Dec 31, 2024: 93.5M for, 226K against.
- Approved stock plan amendment (86M for, 4.2M against) and advisory say-on-pay (84.5M for).

## SEC filing metadata
- accession: 0001193125-24-274286
- form_type: 8-K
- ticker: SPHR
- cik: 0001795250
- company_name: Sphere Entertainment Co.
- filed_at: 2024-12-10T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.4
- calibrated_materiality_score: 0.4
- confidence: high
- sec_items: 5.02, 5.07
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1795250/000119312524274286/0001193125-24-274286-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1795250/000119312524274286/d877810d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-24-274286
- JSON: https://secwatch.observer/filing/0001193125-24-274286.json
- Plain text: https://secwatch.observer/filing/0001193125-24-274286.txt

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