Investor SemGroup Corp
13D/G Filings

This page shows a list of all the recent 13D/G filings made by SemGroup Corp . Schedule 13D is commonly referred to as a “beneficial ownership report.” The term "beneficial owner" is defined under SEC rules. It includes any person who directly or indirectly shares voting power or investment power (the power to sell the security).

When a person or group of persons acquires beneficial ownership of more than 5% of a voting class of a company’s equity securities, they are required to file a Schedule 13D within ten days after the purchase. Click the link icon to see the full transaction history.

Date Form Target Prev
Shares
Current
Shares
Change
(Percent)
Ownership
(Percent)
Change
(Percent)
2016-09-30 13D/A RRMS / Rose Rock Midstream, L.P. 20,704,418 0
2016-05-31 13D/A RRMS / Rose Rock Midstream, L.P. 20,704,418 20,704,418
2015-04-22 13D/A NGL / NGL Energy Partners LP - Limited Partnership 5,196,788
2015-04-01 13D/A RRMS / Rose Rock Midstream, L.P. 20,704,418
2015-01-09 13D/A NGL / NGL Energy Partners LP - Limited Partnership 6,598,767
2014-08-13 13D/A NGL / NGL Energy Partners LP - Limited Partnership 7,652,568
2014-07-03 13D/A RRMS / Rose Rock Midstream, L.P. 171,218
2014-01-10 13D/A RRMS / Rose Rock Midstream, L.P. 171,218
2013-01-22 13D/A RRMS / Rose Rock Midstream, L.P. 171,218
2012-01-17 13D RRMS / Rose Rock Midstream, L.P. 171,218