Ironwood Midstream Announces Two Significant Promotions Within Its Executive Leadership Team

Ironwood Midstream Energy Partners II, LLC
  • Justin Johnson has assumed the role of President
  • Tyler Mason has been promoted to Chief Commercial Officer
  • Ironwood founder, Mike Williams will continue to lead as Chief Executive Officer

SAN ANTONIO, TEXAS – Ironwood Midstream Energy Partners II, LLC (Ironwood II) today announced it has made two significant promotions within its executive leadership team. Justin Johnson has been promoted to President from Chief Commercial Officer, and Tyler Mason has been promoted to Chief Commercial Officer from Vice President of Commercial. Mike Williams, who founded Ironwood in 2015, continues to lead the company as Chief Executive Officer. 

“We are thrilled to promote Justin and Tyler, who have been instrumental in the growth and development of Ironwood over the past several years,” said Ironwood II Chief Executive Officer Mike Williams. “As President and Chief Commercial Officer respectively, Justin and Tyler are well-positioned to execute on our strategic initiatives as we continue to scale our platform of energy infrastructure assets in South Texas. Their collective skill sets, strong industry relationships, and collaborative approach are well-demonstrated, and I am confident will continue to be of great benefit to Ironwood.” 

Justin Johnson, President
Johnson joined Ironwood in 2017 as Chief Financial Officer, before becoming Chief Commercial Officer in 2021. Prior to Ironwood, Johnson served as Chief Financial Officer at Palmera Resources. Johnson has also held various leadership roles in corporate development, finance, treasury, and accounting with Amromco Energy, Quantum Resources, and Carrizo Oil & Gas.

Tyler Mason, Chief Commercial Officer
Mason joined Ironwood in 2021 as Vice President of Commercial. Previously, Mason spent nearly nine years at Howard Energy Partners, most recently as Vice President of Business Development where he negotiated and executed midstream projects across multiple basins throughout the United States. Mason has also worked for Southwestern Energy.

Having recently completed construction of the Ironwood Express Pipeline, an approximately 45-mile trunkline through Gonzales and Karnes counties in South Texas, Ironwood continues to serve its customers by providing seamless market access to key ports, refineries, processing, and chemical complexes along the Gulf Coast region.  With crude oil and natural gas gathering and transportation capacity of approximately 400,000 barrels per day, and 410,000 million cubic feet per day respectively, Ironwood’s customers are offered access to critical markets in Corpus Christi, Houston, Sweeny, and Three Rivers, among others.  


About Ironwood Midstream II
Ironwood Midstream Energy Partners II is an independent energy company that provides a full suite of midstream services to oil and natural gas producers across North America. Headquartered in San Antonio, Ironwood II operates just under 500 miles of crude oil and natural gas pipelines with approximately 300,000 dedicated net acres. The company is led by a team of seasoned industry professionals and is backed by EnCap Flatrock Midstream. For more information, visit

About EnCap Flatrock Midstream
EnCap Flatrock Midstream provides value-added growth capital to proven management teams focused on midstream infrastructure opportunities across North America. The firm was formed in 2008 by a partnership between EnCap Investments L.P. and Flatrock Energy Advisors, LLC. EnCap Flatrock Midstream is based in San Antonio with offices in Oklahoma City and Houston.  Since inception, the firm has managed investment commitments of nearly $10 billion from a broad group of prestigious institutional investors. EnCap Flatrock Midstream is currently making commitments to new management teams from its latest flagship fund, EFM V. For more information, please visit

Media Contact:
Meredith Hargrove Howard
Redbird Communications Group