SemGroup Corp

Q: Sep 30 2019

Q: Jun 30 2019

Q: Mar 31 2019

FY: Dec 31 2018

Q: Sep 30 2018

Q: Jun 30 2018

Q: Mar 31 2018

FY: Dec 31 2017

Q: Sep 30 2017

Q: Jun 30 2017

Q: Mar 31 2017

FY: Dec 31 2016

Q: Sep 30 2016

Q: Jun 30 2016

FY: Dec 31 2015

Q: Mar 31 2016

FY: Dec 31 2015

Q: Sep 30 2015

Q: Jun 30 2015

FY: Dec 31 2014

1.02,8.01

1.02,2.01,3.01,3.03,5.01,5.02,5.07,7.01,9.01

8.01

2.02,9.01

1.01,5.03,7.01,9.01

2.02,9.01

1.01,2.03,9.01

5.02,5.07,9.01

2.02,9.01

1.01,2.01,2.03,7.01,9.01

2.02,9.01

1.01,7.01,9.01

5.02

2.02,9.01

2.02,9.01

1.01,1.02,2.03,9.01

3.03,5.07,9.01

2.02,9.01

2.01,9.01

2.02,9.01

Certification of termination of registration of a class of securities (Section 12(b))

Notice of Effectiveness

Notice of Effectiveness

Notice of Effectiveness

Notice of Effectiveness

Notice of Effectiveness

Post Effective Amendment to S-8

Post Effective Amendment to S-8

Post-effective amendment to a registration statement

Post-effective amendment to a registration statement

Post-effective amendment to a registration statement

Post Effective Amendment to S-8

Post Effective Amendment to S-8

Post-effective amendment to a registration statement

Post-effective amendment to a registration statement

Notification of removal from listing and/or registration on a national securities exchange

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

Written communication about a business combination transaction (Rule 425)

No description available

Definitive Proxy Statement

Definitive Proxy Statement

Preliminary Proxy Statement

Definitive Proxy Statement

Preliminary Proxy Statement

Additional Information for Proxy Statement/ Votes

Definitive Proxy Statement

Definitive Proxy Statement

Additional proxy soliciting materials filed by a non-management party

Definitive Proxy Statement

Definitive Proxy Statement

Definitive Proxy Statement

Additional Information for Proxy Statement/ Votes

Additional Information for Proxy Statement/ Votes

Additional Information for Proxy Statement/ Votes

Additional Information for Proxy Statement/ Votes

Additional Information for Proxy Statement/ Votes

Additional Information for Proxy Statement/ Votes

Additional Information for Proxy Statement/ Votes

none

none

Warburg Pincus (Bermuda) Private Equity GP Ltd.

none

MCADAM WILLIAM J

MCDANIEL THOMAS R

BALLSCHMIEDE RONALD A

Barpoulis Sarah Morrison

Kurz Karl F

LYTAL JAMES H

MINIELLY DAVID M

LINDBERG SUSAN S

Conner Carlin G.

Fitzgerald Robert N

GOSSE DAVID

SELL THOMAS D

REVERE SHAUN M

Buffalo Investor II, L.P.

Buffalo Investor I, L.P.

none

Letter from the SEC

Letter from the SEC

Correspondence with the SEC

Correspondence with the SEC

Correspondence with the SEC

Correspondence with the SEC

Letter from the SEC

Correspondence with the SEC

Letter from the SEC

Correspondence with the SEC

Letter from the SEC

Letter from the SEC

Correspondence with the SEC

Correspondence with the SEC

Letter from the SEC

Correspondence with the SEC

Letter from the SEC

Annual Report Scanned (Paper)

Annual Report Scanned (Paper)

Annual Report Scanned (Paper)