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BCS

Notice of Proposed Sale · 144

Centene Corporation

CNCNYSEEQUITYCurrent

Notice of Proposed Sale

Filed Aug 26, 2026Accepted Aug 26, 2026, 1:45 PM EDTFiling CIK 1802501Accession 0001959173-26-006459
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Structured filing — 144

primary_doc.xml

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Notice of proposed sale. The proposed amounts below do not establish that a sale occurred.

Proposed-sale notice

Issuer
CENTENE CORP
Issuer CIK
0001071739
SEC file number
001-31826
Phone
3147254477
Person for whose account securities are to be sold
KOSTER CHRISTOPHER
Relationships to issuer
Officer
Street
7700 FORSYTH BLVD.
City
ST LOUIS
State / country code
MO
Postal code
63105

Securities proposed for sale

Securities proposed for sale · 1 reported row
SecurityProposed unitsAggregate market valueUnits outstandingApproximate sale dateExchangeBroker / market maker
Common56,5003,779,852.00493,995,00008/26/2026NYSEFidelity Brokerage Services LLC

Broker / market maker — proposed row 1, entry 1

Name
Fidelity Brokerage Services LLC
Street
900 Salem Street
City
Smithfield
State / country code
RI
Postal code
02917

Acquisition of securities to be sold

Acquisition of securities to be sold · 30 reported rows
SecurityAcquiredNature of acquisitionAcquired fromAmount acquiredGift transactionPayment dateNature of payment
Common06/30/2020ESPP PurchaseIssuer41N06/30/2020Cash
Common12/10/2020Restricted Stock VestingIssuer1,657N12/10/2020Compensation
Common12/11/2020Restricted Stock VestingIssuer1,472N12/11/2020Compensation
Common12/12/2020Restricted Stock VestingIssuer1,311N12/12/2020Compensation
Common12/15/2020Restricted Stock VestingIssuer9,075N12/15/2020Compensation
Common03/31/2021ESPP PurchaseIssuer41N03/31/2021Cash
Common04/27/2021Restricted Stock VestingIssuer13,812N04/27/2021Compensation
Common06/30/2021ESPP PurchaseIssuer36N06/30/2021Cash
Common09/30/2021ESPP PurchaseIssuer42N09/30/2021Cash
Common12/10/2021Restricted Stock VestingIssuer1,657N12/10/2021Compensation
Common12/11/2021Restricted Stock VestingIssuer1,474N12/11/2021Compensation
Common12/31/2021ESPP PurchaseIssuer32N12/31/2021Cash
Common03/31/2022ESPP PurchaseIssuer31N03/31/2022Cash
Common06/30/2022ESPP PurchaseIssuer31N06/30/2022Cash
Common09/30/2022ESPP PurchaseIssuer34N09/30/2022Cash
Common12/30/2022ESPP PurchaseIssuer32N12/30/2022Cash
Common03/31/2023ESPP PurchaseIssuer42N03/31/2023Cash
Common06/23/2023Restricted Stock VestingIssuer2,506N06/23/2023Compensation
Common06/30/2023ESPP PurchaseIssuer39N06/30/2023Cash
Common09/29/2023ESPP PurchaseIssuer38N09/29/2023Cash
Common12/15/2023Restricted Stock VestingIssuer6,146N12/15/2023Compensation
Common12/29/2023ESPP PurchaseIssuer36N12/29/2023Cash
Common03/15/2024Restricted Stock VestingIssuer2,700N03/15/2024Compensation
Common03/28/2024ESPP PurchaseIssuer34N03/28/2024Cash
Common06/23/2024Restricted Stock VestingIssuer2,513N06/23/2024Compensation
Common06/28/2024ESPP PurchaseIssuer40N06/28/2024Cash
Common09/30/2024ESPP PurchaseIssuer35N09/30/2024Cash
Common12/15/2024Restricted Stock VestingIssuer3,184N12/15/2024Compensation
Common02/04/2025Restricted Stock VestingIssuer4,730N02/04/2025Compensation
Common03/15/2025Restricted Stock VestingIssuer3,679N03/15/2025Compensation

Sales reported in the preceding three months

Sales reported in the preceding three months · 1 reported row
SellerSecuritySale dateAmount soldGross proceeds
Christopher A. KosterCommon08/18/202647,6033,111,262.14

Seller — prior-sale row 1, entry 1

Name
Christopher A. Koster
Street
7700 Forsyth Boulevard
City
St. Louis
State / country code
MO
Postal code
63105

Prior-sale reporting

Nothing to report for the preceding three months
N

Notice signature

Notice date
08/26/2026
Signed
/s/ Gary Redman, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Christopher A. Koster

Company context

Current securities

Recent company filings

  1. Results of Operations and Financial ConditionOct 27, 2026
  2. 10-Q filingOct 27, 2026
  3. Other EventsOct 8, 2026
  4. 4 filingSep 16, 2026
  5. Regulation FD DisclosureSep 16, 2026

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