Koster Christopher
- SEC CIK
- 0001802501
In the past year, 2 open-market sale filings worth $6.89M and no purchases.
Current role at each company
- CNC Centene CorpSecretary & General Counselas of Aug 27, 2026
Open-market trades in the past year
Open-market purchases (P) and sales (S) filed in the last 365 days, not counting derivative securities or duplicate filings. Values leave out price outliers.
- Bought
- –
- 0 filings
- Sold
- $6.89M
- 2 filings
- Net
- −$6.89M
- Bought minus sold
- Companies
- 1
- With open-market trades
Trades
Every Form 4 that lists Koster Christopher as a reporting owner, including filings made jointly with others, grouped by company. Each row adds up one type of transaction in one filing. Only open-market purchases (P) and sales (S) are shown by default.
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Aug 27, 2026 (view filing)4:45 PM ET | Aug 26 | 1 day | Koster ChristopherSecretary & General Counsel | SSale | −56.5K | $66.90 | −$3.78M | −18.5%248.9K after | |
| Aug 19, 2026 (view filing)4:45 PM ET | Aug 18 | 1 day | Koster ChristopherSecretary & General Counsel | SSale | −47.6K | $65.36 | −$3.11M | −13.5%305.4K after | |
| Nov 1, 2021 (view filing) | Oct 28 | 4 days | Koster ChristopherSVP, Secr. & General Counsel | SSale | −14.3K | $70.17 | −$1.00M | −10.6%120.8K after |