Form SC 13G/A - Statement of Beneficial Ownership by Certain Investors: [Amend]
SEC Accession No. 0001085146-17-001970
Filing Date
2017-09-08
Accepted
2017-09-08 13:04:58
Documents
1

Document Format Files

Seq Description Document Type Size
1 ROBECO INVESTMENT MANAGEMENT INC. gpora3_90817.htm SC 13G/A 26365
  Complete submission text file 0001085146-17-001970.txt   28147
Mailing Address 14313 NORTH MAY AVENUE SUITE 100 OKLAHOMA CITY OK 73134
Business Address 14313 NORTH MAY AVENUE SUITE 100 OKLAHOMA CITY OK 73134 4058488807
GULFPORT ENERGY CORP (Subject) CIK: 0000874499 (see all company filings)

EIN.: 731521290 | State of Incorp.: DE | Fiscal Year End: 1231
Type: SC 13G/A | Act: 34 | File No.: 005-51297 | Film No.: 171075848
SIC: 1311 Crude Petroleum & Natural Gas

Mailing Address 909 THIRD AVENUE NEW YORK NY 10022
Business Address ONE BEACON STREET BOSTON MA 02108 2129089500
Boston Partners (Filed by) CIK: 0001386060 (see all company filings)

EIN.: 980202744 | State of Incorp.: DE | Fiscal Year End: 1231
Type: SC 13G/A