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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1071739	Centene Corp	CNC	Hospital & Medical Service Plans (6324)	041406317

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1205242	K Robert Ditmore	7700 Forsyth Boulevard St. Louis MO 63105		Yes	No	No	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Common Stock	Acquisiton	2012-03-05	22,500	$7.57	272,501	No	4	M	Direct
Common Stock	Disposition	2012-03-05	22,500	$46.65	250,001	No	4	S	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	M	Direct
No	4	S	Direct

Reported Derivative Transactions

Sec. Name	Sec. Type	Acquisiton - Disposition	Date	Amount	Price	Amount - 2	Price - 2
Common Stock	Common Stock Option (right to buy)	Disposition	2012-03-05	22,500	$7.57	22,500	$7.57

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
0	2004-05-03	2012-07-24	No	4	M	Direct

Reported Non-Derivative Holdings

Sec. Name	Remaning Holdings	Nature of Ownership	Explanation
Common Stock	15,250	Indirect	By spouse
Common Stock	5,600	Indirect	See footnote
Common Stock	59,200	Indirect	See footnote

Reported Derivative Holdings

Sec. Name	Sec. Type	Price	Date	Expiration Date	Amount	Remaning Holdings	Nature of Ownership
Common Stock	Common Stock Option (right to buy)	$16.65	2005-04-26	2014-05-04	10,000	10,000	Direct

Expiration Date	Amount	Remaning Holdings	Nature of Ownership
2014-05-04	10,000	10,000	Direct

Footnotes

Ownership includes 3,555 shares of restricted stock subject to vesting requirements.
This sale is pursuant to a 10b5-1 Trading Plan established on February 20, 2012. The weighted average price for this transaction is reported within the form. Full information regarding the number of shares at each price is available upon request.
Shares owned by spouse who shares Mr. Ditmore's household. Mr. Ditmore disclaims beneficial ownership of the shares held by his spouse, and the inclusion of these shares in this report shall not be deemed an admission of beneficial ownership of all of the reported shares for purposes of Section 16 or for any other purpose.
Owned by the Ditmore 2002 Charitable Remainder Trust, of which Mr. Ditmore is a co-trustee.
Owned by the Ditmore Family Management Company LLC, of which Mr. Ditmore is a chief manager. Mr. Ditmore disclaims beneficial ownership except to the extent of his pecuniary interest therein, and the inclusion of these shares in this report shall not be deemed an admission of beneficial ownership of all of the reported shares for purposes of Section 16 or for any other purpose.