SAN ANTONIO–(BUSINESS WIRE)–Howard Energy Partners (HEP) today announced that it has executed a definitive agreement to acquire Iron Horse Midstream (Iron Horse), a portfolio company of Sixth Street, expanding its position in the prolific Anadarko Basin. The acquisition is supported by multidecade customer contracts covering approximately 167,000 dedicated acres and builds on HEP’s strong foundation for long-term growth and value creation. With this transaction, HEP’s investment in Midcontine