Home > Insider Trading > Filing (0001214651-12-000025)

Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1489136	Semgroup Corp	SEMG	Oil & Gas Field Services, Nec (1389)	203533152

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1366918	A Ronald Ballschmiede	Two Warren Place, 6120 South Yale Ave. Suite 700 Tulsa OK 74136		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	Disposition	2012-06-01	1,382	$29.89	10,526	No	4	S	Direct
Common Stock	Acquisiton	2012-06-01	3,153	$0.00	13,679	No	4	A	Direct

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

Footnotes

The transaction reported in this Form 4 was effected pursuant to a Rule 10b5-1 trading plan previously adopted by the reporting person. These shares were sold to cover the individuals tax obligations arising from the vesting of shares of restricted stock granted under the SemGroup Corporation Equity Incentive Plan.
This transaction was executed in multiple trades on June 1, 2012 at prices ranging from $29.76 to $30.02. The price reported above reflects the weighted average sold price. The reporting person hereby undertakes to provide to the Commission staff, the issuer or a security holder of the issuer, upon request, full information regarding the number of shares sold at each separate price.