InsiderTrades

KOSTER CHRISTOPHER

SEC CIK 1802501 · EDGAR

Buying vs selling by month open-market trades, last 60 months, CNC
BoughtSold

Companies

TickerCompanyTitleHoldingBoughtSoldTradesFirstLast
CNCCentene CorporationSVP, GC, Secr 248.9K — $7.89M 272021-10-282026-08-26

Most active insiders at CNC, 12 months

#InsiderTitleBoughtSold
1 Burdick Kenneth ADir —$7.74M
2 KOSTER CHRISTOPHERGC, Sec —$6.89M
3 PIENKOS THEODORE JCAO, Corp. Ctrl ——
4 MCNALLY TANYA MCHRO ——
5 SMITH SUSAN RAYECOO ——
6 CASSO KATIECAO, Corp. Ctrl ——
7 LONDON SARAHCEO, Dir ——
8 Tyler Lauren MDir ——
9 TANJI KENNETHDir ——
10 Samuels Theodore R. IIDir ——

Transactions 27

Type
Reset
X Filed Traded Ticker Company Insider Title Type Price Qty Owned ΔOwn Value
2026-08-27 16:45 2026-08-26 CNC Centene Corporation KOSTER CHRISTOPHER GC, Sec S - Sale $66.90 -56.5K 248.9K -19% -$3.78M
2026-08-19 16:45 2026-08-18 CNC Centene Corporation KOSTER CHRISTOPHER GC, Sec S - Sale $65.36 -47.6K 305.4K -13% -$3.11M
2026-03-17 2026-03-15 CNC Centene Corporation KOSTER CHRISTOPHER GC, Sec F - Tax $34.45 -9,087 352.8K -3% -$313.0K
A 2026-02-06 2026-01-26 CNC Centene Corporation KOSTER CHRISTOPHER GC, Sec A - Grant $0.00 +126.9K 361.9K +54% $0
2026-01-28 2026-01-26 CNC Centene Corporation KOSTER CHRISTOPHER GC, Sec A - Grant $0.00 +126.9K 388.9K +48% $0
2025-03-18 2025-03-15 CNC Centene Corporation KOSTER CHRISTOPHER GC, Sec F - Tax $58.19 -4,039 175.8K -2% -$235.0K
2025-03-18 2025-03-15 CNC Centene Corporation KOSTER CHRISTOPHER GC, Sec A - Grant $0.00 +85.9K 261.7K +49% $0
2025-02-06 2025-02-04 CNC Centene Corporation KOSTER CHRISTOPHER GC, Sec D - Sale to Iss $0.00 -10.7K 183.6K -5% $0
2025-02-06 2025-02-04 CNC Centene Corporation KOSTER CHRISTOPHER GC, Sec F - Tax $64.82 -3,852 179.8K -2% -$249.7K
2024-12-17 2024-12-15 CNC Centene Corporation KOSTER CHRISTOPHER GC, Sec F - Tax $59.42 -2,518 194.3K -1% -$149.6K
2024-06-24 2024-06-23 CNC Centene Corporation KOSTER CHRISTOPHER GC, Sec F - Tax $67.93 -1,987 196.7K -1.0% -$135.0K
2024-03-19 2024-03-15 CNC Centene Corporation KOSTER CHRISTOPHER GC, Sec F - Tax $76.05 -2,135 161.5K -1% -$162.4K
2024-03-19 2024-03-15 CNC Centene Corporation KOSTER CHRISTOPHER GC, Sec A - Grant $0.00 +37.1K 198.7K +23% $0
2024-02-08 2024-02-06 CNC Centene Corporation KOSTER CHRISTOPHER EVP, GC, Secr A - Grant $0.00 +6,336 177.1K +4% $0
2024-02-08 2024-02-06 CNC Centene Corporation KOSTER CHRISTOPHER EVP, GC, Secr F - Tax $74.07 -13.4K 163.7K -8% -$996.2K
2023-12-19 2023-12-15 CNC Centene Corporation KOSTER CHRISTOPHER EVP, GC, Secr F - Tax $75.51 -4,889 170.8K -3% -$369.2K
2023-06-27 2023-06-23 CNC Centene Corporation KOSTER CHRISTOPHER EVP, GC, Secr F - Tax $66.80 -1,994 175.5K -1% -$133.2K
2023-03-17 2023-03-15 CNC Centene Corporation KOSTER CHRISTOPHER EVP, GC, Secr A - Grant $63.34 +41.4K 177.5K +30% +$2.63M
2023-02-09 2023-02-07 CNC Centene Corporation KOSTER CHRISTOPHER EVP, GC, Secr F - Tax $71.01 -6,175 136.1K -4% -$438.5K
2023-02-09 2023-02-07 CNC Centene Corporation KOSTER CHRISTOPHER EVP, GC, Secr A - Grant $0.00 +324 142.2K +0.2% $0
2022-12-19 2022-12-15 CNC Centene Corporation KOSTER CHRISTOPHER EVP, GC, Secr F - Tax $83.00 -4,928 141.9K -3% -$409.0K
2022-12-13 2022-12-10 CNC Centene Corporation KOSTER CHRISTOPHER EVP, GC, Secr F - Tax $86.25 -1,340 146.8K -0.9% -$115.6K
2022-06-27 2022-06-23 CNC Centene Corporation KOSTER CHRISTOPHER EVP, GC, Secr F - Tax $81.87 -2,010 148.1K -1% -$164.6K
DM 2021-12-17 2021-12-15 CNC Centene Corporation KOSTER CHRISTOPHER EVP, GC, Secr A - Grant $79.68 +42.2K 150.0K +39% +$3.36M
D 2021-12-17 2021-12-15 CNC Centene Corporation KOSTER CHRISTOPHER EVP, GC, Secr F - Tax $81.85 -10.4K 113.7K -8% -$849.4K
M 2021-12-14 2021-12-10+ CNC Centene Corporation KOSTER CHRISTOPHER SVP, GC, Secr F - Tax $76.55 -2,537 118.2K -2% -$194.2K
2021-11-01 2021-10-28 CNC Centene Corporation KOSTER CHRISTOPHER SVP, GC, Secr S - Sale $70.17 -14.3K 120.8K -11% -$1.00M

Purchase Sale Sale after option exercise All abbreviations