exhibit 2. 3 contribution agreement by and among meh sub llc, gulfport energy corporation, mammoth energy partners llc and mammoth energy services, inc. dated as of march 20, 2017 article 1contribution article 1 article 1 contribution contribution 1. 1contribution of interests 1. 1 1. 1 contribution of interests contribution of interests 1. 2consideration 1. 2 1. 2 consideration consideration 1. 3tax treatment 1. 3 1. 3 tax treatment tax treatment article 2representations and warranties of mammoth article 2 article 2 representations and warranties of mammoth representations and warranties of mammoth 2. 1organization of mammoth 2. 1 2. 1 organization of mammoth organization of mammoth 2. 2power and authority ; enforceability 2. 2 2. 2 power and authority ; enforceability power and authority ; enforceability 2. 3no violation ; necessary approvals 2. 3 2. 3 no violation ; necessary approvals no violation ; necessary approvals 2. 4brokers ’ fees 2. 4 2. 4 brokers ’ fees brokers ’ fees 2. 5capitalization 2. 5 2. 5 capitalization capitalization 2. 6issuance of common stock 2. 6 2. 6 issuance of common stock issuance of common stock 2. 7registration rights 2. 7 2. 7 registration rights registration rights 2. 8breach of article 5 representation and warranty 2. 8 2. 8 breach of article 5 representation and warranty breach of article 5 representation and warranty article 3representations and warranties of mammoth partners llc article 3 article 3 representations and warranties of mammoth partners llc representations and warranties of mammoth partners llc 3. 1organization of mammoth partners llc 3. 1 3. 1 organization of mammoth partners llc organization of mammoth partners llc 3. 2power and authority ; enforceability 3. 2 3. 2 power and authority ; enforceability power and authority ; enforceability 3. 3no violation ; necessary approvals 3. 3 3. 3 no violation ; necessary approvals no violation ; necessary approvals 3. 4brokers ’ fees 3. 4 3. 4 brokers ’ fees brokers ’ fees 3. 5breach of article 5 representation and warranty 3. 5 3. 5 breach of article 5 representation and warranty breach of article 5 representation and warranty article 4representations and warranties of contributors article 4 article 4 representations and warranties