KOSTER CHRISTOPHER — SEC Form 4 filings
SEC reporting owner CIK 1802501. 11 Form 4 filings on record with FilingPulse; latest filed 2026-08-27.
Transaction summary — filings shown
Covers all 11 filings on record, filed 2024-02-08 to 2026-08-27. Counts and totals are arithmetic on values as filed — descriptive data, not a recommendation.
- Open-market purchases (code P, non-derivative): none reported.
- Open-market sales (code S, non-derivative): 2 legs across 2 filings — 104,103 shares, $6,891,182 total (shares × price as filed).
- Other reported legs (grants, option exercises, tax withholding, gifts, derivative-security transactions, …): 13.
- Largest priced transaction: sale of 56,500 shares @ $66.90 ($3,779,850) in CENTENE CORP, filed 2026-08-27.
By issuer — same filings
Open-market purchase/sale legs on non-derivative securities, grouped by issuer. Role is as filed on the newest filing for that issuer. Dollar totals cover priced legs only (shares × price as filed). Ordered by priced transaction value, largest first.
| Issuer | Role (as filed) | Filings | Purchases (P) | Sales (S) | Other legs |
|---|---|---|---|---|---|
| CENTENE CORP (CNC) | Secretary & General Counsel | 11 | — | 2 legs · 104,103 sh · $6,891,182 | 13 |
Form 4 filings — KOSTER CHRISTOPHER
| Filed | Form | Issuer | Reported transactions | Source |
|---|---|---|---|---|
| 2026-08-27 | 4 | CENTENE CORP (CNC) | Sale (S): 56,500 @ $66.90 | EDGAR |
| 2026-08-19 | 4 | CENTENE CORP (CNC) | Sale (S): 47,603 @ $65.36 | EDGAR |
| 2026-03-17 | 4 | CENTENE CORP (CNC) | Tax withholding (F): 9,087 @ $34.45 | EDGAR |
| 2026-02-06 | 4/A | CENTENE CORP (CNC) | Grant/award (A): 126,925 @ $0 | EDGAR |
| 2026-01-28 | 4 | CENTENE CORP (CNC) | Grant/award (A): 126,925 @ $0 | EDGAR |
| 2025-03-18 | 4 | CENTENE CORP (CNC) | Tax withholding (F): 4,039 @ $58.19 · Grant/award (A): 85,925 @ $0 | EDGAR |
| 2025-02-06 | 4 | CENTENE CORP (CNC) | Disposition to issuer (D): 10,661 @ $0 · Tax withholding (F): 3,852 @ $64.82 | EDGAR |
| 2024-12-17 | 4 | CENTENE CORP (CNC) | Tax withholding (F): 2,518 @ $59.42 | EDGAR |
| 2024-06-24 | 4 | CENTENE CORP (CNC) | Tax withholding (F): 1,987 @ $67.93 | EDGAR |
| 2024-03-19 | 4 | CENTENE CORP (CNC) | Tax withholding (F): 2,135 @ $76.05 · Grant/award (A): 37,147 @ $0 | EDGAR |
| 2024-02-08 | 4 | CENTENE CORP (CNC) | Grant/award (A): 6,336 @ $0 · Tax withholding (F): 13,449 @ $74.07 | EDGAR |
FilingPulse's Form 4 archive currently extends back to 2024-01-11 and is expanding backward through EDGAR history — earlier filings by this insider may not be indexed yet. Names and roles are shown as filed.
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