Updated Jul 16, 2026
Koester Jennifer is a corporate insider tracked by InsiderAlpha. No SEC Form 4 filings recorded in the last 90 days.
| Date | Ticker | Company | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-03-17 | SPHR | Sphere Entertainment Co. | F — Tax withholding / forfeiture | 8.8K | $105.70 | $931K |
| 2026-03-17 | SPHR | Sphere Entertainment Co. | M — Option exercise | 17.3K | $0.00 | |
| 2025-09-15 | SPHR | Sphere Entertainment Co. | F — Tax withholding / forfeiture | 13.8K | $60.29 | $834K |
| 2025-09-15 | SPHR | Sphere Entertainment Co. | M — Option exercise | 8.3K | $0.00 | |
| 2025-09-15 | SPHR | Sphere Entertainment Co. | M — Option exercise | 6.8K | $0.00 | |
| 2025-09-15 | SPHR | Sphere Entertainment Co. | M — Option exercise | 12.0K | $0.00 |
Koester Jennifer is a corporate insider — currently tracked as Insider. InsiderAlpha tracks every SEC Form 4 filing in real time.
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
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