Senior insider sale

Senior Vice President at CENTENE CORP — senior position signals high conviction

$6.89M

104.10K shares

What this filing means

KOSTER CHRISTOPHER plans to sell 104.10K shares of CENTENE CORP valued at approximately $6.89M. Form 144 is a notice of intent to sell restricted or control securities — not a mandatory transaction. This filing provides advance warning of potential selling pressure.

KOSTER CHRISTOPHER

Filed: 8/26/2026ACC: 0001959173-26-006459

InsiderKOSTER CHRISTOPHERCIK 1802501

→

IssuerCENTENE CORPCIK 1071739

Officer· Senior Vice President

Since Feb 2020

104.10K

Shares to sell

$6.89M

Approx. market value

56.50K

Acquired (3 months)

Planned

1 completed

Securities Acquired — Last 3 Months30

Sort

Restricted Stock Vesting

Compensation

3/15/2025

3.68K

Restricted Stock Vesting

Compensation

2/4/2025

4.73K

Restricted Stock Vesting

Compensation

12/15/2024

3.18K

ESPP Purchase

Cash

9/30/2024

35.00

ESPP Purchase

Cash

6/28/2024

40.00

Restricted Stock Vesting

Compensation

6/23/2024

2.51K

ESPP Purchase

Cash

3/28/2024

34.00

Restricted Stock Vesting

Compensation

3/15/2024

2.70K

ESPP Purchase

Cash

12/29/2023

36.00

Restricted Stock Vesting

Compensation

12/15/2023

6.15K

ESPP Purchase

Cash

9/29/2023

38.00

ESPP Purchase

Cash

6/30/2023

39.00

Restricted Stock Vesting

Compensation

6/23/2023

2.51K

ESPP Purchase

Cash

3/31/2023

42.00

ESPP Purchase

Cash

12/30/2022

32.00

ESPP Purchase

Cash

9/30/2022

34.00

ESPP Purchase

Cash

6/30/2022

31.00

ESPP Purchase

Cash

3/31/2022

31.00

ESPP Purchase

Cash

12/31/2021

32.00

Restricted Stock Vesting

Compensation

12/11/2021

1.47K

Restricted Stock Vesting

Compensation

12/10/2021

1.66K

ESPP Purchase

Cash

9/30/2021

42.00

ESPP Purchase

Cash

6/30/2021

36.00

Restricted Stock Vesting

Compensation

4/27/2021

13.81K

ESPP Purchase

Cash

3/31/2021

41.00

Restricted Stock Vesting

Compensation

12/15/2020

9.07K

Restricted Stock Vesting

Compensation

12/12/2020

1.31K

Restricted Stock Vesting

Compensation

12/11/2020

1.47K

Restricted Stock Vesting

Compensation

12/10/2020

1.66K

ESPP Purchase

Cash

6/30/2020

41.00

Total acquired56.50K

Acquisition Date	Type	Amount Acquired	Gift
3/15/2025	Restricted Stock Vesting Compensation	3.68K	—
2/4/2025	Restricted Stock Vesting Compensation	4.73K	—
12/15/2024	Restricted Stock Vesting Compensation	3.18K	—
9/30/2024	ESPP Purchase Cash	35.00	—
6/28/2024	ESPP Purchase Cash	40.00	—
6/23/2024	Restricted Stock Vesting Compensation	2.51K	—
3/28/2024	ESPP Purchase Cash	34.00	—
3/15/2024	Restricted Stock Vesting Compensation	2.70K	—
12/29/2023	ESPP Purchase Cash	36.00	—
12/15/2023	Restricted Stock Vesting Compensation	6.15K	—
9/29/2023	ESPP Purchase Cash	38.00	—
6/30/2023	ESPP Purchase Cash	39.00	—
6/23/2023	Restricted Stock Vesting Compensation	2.51K	—
3/31/2023	ESPP Purchase Cash	42.00	—
12/30/2022	ESPP Purchase Cash	32.00	—
9/30/2022	ESPP Purchase Cash	34.00	—
6/30/2022	ESPP Purchase Cash	31.00	—
3/31/2022	ESPP Purchase Cash	31.00	—
12/31/2021	ESPP Purchase Cash	32.00	—
12/11/2021	Restricted Stock Vesting Compensation	1.47K	—
12/10/2021	Restricted Stock Vesting Compensation	1.66K	—
9/30/2021	ESPP Purchase Cash	42.00	—
6/30/2021	ESPP Purchase Cash	36.00	—
4/27/2021	Restricted Stock Vesting Compensation	13.81K	—
3/31/2021	ESPP Purchase Cash	41.00	—
12/15/2020	Restricted Stock Vesting Compensation	9.07K	—
12/12/2020	Restricted Stock Vesting Compensation	1.31K	—
12/11/2020	Restricted Stock Vesting Compensation	1.47K	—
12/10/2020	Restricted Stock Vesting Compensation	1.66K	—
6/30/2020	ESPP Purchase Cash	41.00	—
Total		56.50K

Planned & Completed Dispositions2

Sort

Completed

—Completed

Units to sell

47.60K

Market value

$3.11M

8/18/2026

Planned — Approximate Date

NYSEPlanned

Units to sell

56.50K

Market value

$3.78M

8/26/2026

Total

Units

104.10K

Value

$6.89M

Date	Units to Sell	Approx. Market Value	Exchange	Status
Completed
8/18/2026	47.60K	$3.11M	—	Completed
Planned — Approximate Date
8/26/2026	56.50K	$3.78M	NYSE	Planned
Total	104.10K	$6.89M