Mark to Market Calculations These documents summarize the mark-to-market (MtM) calculation in support of the credit requirements for the Master Standard Service Offer Supply Agreement (“Master SSO Supply Agreement”) for the FirstEnergy Ohio Utilities’ CBP auctions. | Document: | | Updated On: | | MtM Calculation for Apr. 13, 2016 Auction |  | Thursday, April 14, 2016 | | MtM Calculation for Apr. 26, 2016 Auction | | Wednesday, April 27, 2016 | | MtM Calculation for Oct. 2016 Auction | | Thursday, October 6, 2016 | | MtM Calculation for Jan. 2017 Auction | | Monday, February 6, 2017 | | MtM Calculation for Jan. 2019 Auction | | Tuesday, April 9, 2019 | |