The filing would represent the biggest corporate casualty yet of a slump in oil and gas prices and another black mark in energy for the private-equity pioneer. The Tulsa, Okla.-based oil and gas producer agreed to hand ownership to a group of its lenders in bankruptcy, the company said in a statement Friday, confirming an earlier Wall Street Journal report. The move would wipe out the roughly $4.1 billion in cash KKR and its partners invested in the company. The private-equity firm led a $7.2 billion leveraged buyout of Samson in 2011, the biggest-ever such deal for an oil and gas producer. Samson’s board approved the restructuring agreement Friday afternoon, according to a person familiar with the deal. The energy producer intends to skip a bond payment due Monday and use a 30-day grace period to seek broader creditor support […]