Jonathan F. Foster Appointed to Board of Sabine Oil & Gas

Sabine Oil & Gas Corporation, May 15, 2015

We are pleased to announce that our Board of Directors appointed Jonathan F. Foster as a new Class III director on May 15, 2015 for a term expiring at the 2015 annual meeting of shareholders to be held on June 3, 2015. The Board of Directors has also nominated Mr. Foster for election as a Class III director with a term expiring at the 2018 annual meeting of shareholders.

Because this change adds Mr. Foster to the slate of directors proposed to be elected at the 2015 annual meeting, we are providing you with additional information in the enclosed supplement to proxy statement and an amended proxy card to allow you to vote on the election of Mr. Foster to a three-year term on our Board. For technical reasons explained in the enclosed materials, the supplement to proxy statement and amended proxy card reflect the addition of an additional director nominee as a separate proposal (Proposal 4).

You should resubmit your vote on all of the proposals in your proxy or voting instructions by one of the alternatives described in the supplement. The receipt of your new proxy or voting instructions will revoke and supersede any proxy or voting instructions previously submitted. If you have already voted and do not submit new voting instructions, your previously submitted proxy or voting instructions will be voted at the 2015 annual meeting with respect to all other proposals, including the election of Thomas N. Chewning as a Class III director (Proposal 1), but will not be counted in determining the outcome of the election of Mr. Foster to our Board. On behalf of our Board of Directors, thank you for your continued interest in Sabine Oil & Gas Corporation.