EXHIBIT 99.6 GULFPORT ENERGY CORPORATION NOMINEE HOLDER CERTIFICATION The undersigned, a bank, broker, trustee, depositary or other nominee of rights (the "Rights") to purchase shares of Common Stock of Gulfport Energy Corporation, a Delaware corporation ("Gulfport"), pursuant to the Rights Offering described and provided for in Gulfport's prospectus dated, ___________, 2004 (the "Prospectus"), hereby certifies to Gulfport and to UMB Bank, N.A., as Subscription Agent for such Rights Offering, that (1) the undersigned has exercised, on behalf of the beneficial owners thereof (which may include the undersigned), the number of Rights specified below pursuant to the Basic Subscription Privilege (as defined in the Prospectus) on behalf of beneficial owners of Rights who have subscribed for the purchase of additional shares of Common Stock pursuant to the Over-Subscription Privilege (as defined in the Prospectus), listing separately below each such exercised Basic Subscription Privilege and the corresponding Over-Subscription Privilege (without identifying any such beneficial owner), and (2) each such beneficial owner's Basic Subscription Privilege has been exercised in full: Number of shares Rights exercised Number of shares owned on pursuant to Basic subscribed for pursuant the Record Date Subscription to Over-Subscription Privilege Privilege ________________________________________________________________________________ 1. _________________ ______________________ ______________________ 2. _________________ ______________________ ______________________ 3. _________________ ______________________ ______________________ 4. _________________ ______________________ ______________________ 5. _________________ ______________________ ______________________ 6. _________________ ______________________ ______________________ 7. _________________ ______________________ ______________________ 8. _________________ ______________________ ______________________ 9. _________________ ______________________ ______________________ Provide the following information if applicable: _______________________________ Depository Trust Company ("DTC") Participant Number [PARTICIPANT] By: ____________________________ Name: Title: ________________________________ DTC Basic Subscription Confirmation Number(s)