Our Team

Jana J. Jonas is Chief of Staff of EnCap Flatrock Midstream. Ms. Jonas is responsible for the daily management of all administrative and office functions across EnCap Flatrock Midstream’s three office locations. In addition to managing the firm’s administrative functions, she also supports the investor relations functions of EFM’s funds and oversees public relations for the firm. She serves on EnCap Flatrock’s Charitable Giving Committee and is responsible for the company’s community outreach efforts. Ms. Jonas joined EnCap Flatrock Midstream in 2008 upon receiving her B.S. in Agricultural Leadership and Development with a minor in Public Relations from Texas A&M University.

Ian S. Morris is a Vice President of EnCap Flatrock Midstream. Mr. Morris supports all finance, administrative and accounting functions of EFM’s funds and portfolio companies. Prior to joining EnCap Flatrock Midstream in 2021, Mr. Morris was an Investment Banking Analyst at Evercore’s Corporate Advisory business in Houston, where he focused on M&A and capital structure advisory across the energy sector. Prior to joining Evercore, Mr. Morris was a Finance and Corporate Development Analyst at EPIC Midstream in San Antonio. Mr. Morris holds a B.S. in Accounting from Trinity University. He currently serves as an observer of several EnCap Flatrock portfolio companies, including Cardinal Midstream Partners IV, LLC; Manchester Energy, LLC; Moda Midstream II, LLC; and Stakeholder Midstream, LLC.

Abigail R. Stavinoha is a Vice President of EnCap Flatrock Midstream. Ms. Stavinoha supports all finance, administrative and accounting functions of EFM’s funds and portfolio companies. Prior to joining EnCap Flatrock Midstream in 2020, Ms. Stavinoha was Manager – Project Development at Sterling Energy Investments, providing technical and commercial support for midstream infrastructure in Colorado’s Denver-Julesburg Basin. She also previously worked as an engineer for Chevron Phillips Chemical Company at the Sweeny Complex in Texas.

Ms. Stavinoha holds a B.S. in Mechanical Engineering from the University of Kansas and an MBA from Harvard Business School. She is a Registered Professional Engineer in Colorado and previously served on the Board of Directors of the GPA Midstream Rocky Mountain Chapter. She currently serves on the board of directors of several EFM portfolio companies, including BMR Midstream, Cardinal Midstream Partners, Rangeland Energy IV and Vecino Energy Partners.

R. Kyle Stelma is a Vice President of EnCap Flatrock Midstream. Mr. Stelma supports all finance, administrative and accounting functions of EFM’s funds and portfolio companies. Prior to joining EnCap Flatrock Midstream in 2017, Mr. Stelma was an analyst in the Energy Investment Banking Group at Jefferies LLC in Houston, where he focused on M&A advisory work as well as public and private capital raises in the energy sector. Mr. Stelma holds a B.B.A. in Finance from Texas A&M University. He currently serves on the board of directors of several EFM portfolio companies, including Greenfield Midstream, Ironwood Midstream Energy Partners II, Manchester Energy Partners and Stakeholder Midstream.

Meredith M. Stieler is the Vice President of Accounting and Controller of EnCap Flatrock Midstream. Ms. Stieler joined EnCap Flatrock Midstream in 2012 and has more than 30 years of experience in accounting and risk management positions. She began her career in public accounting and served as a Senior Auditor with KPMG. In 1990, she joined the wholesale gas trading business at Enron Corp. and over the next 12 years served in a variety of energy accounting and risk management positions. Ms. Stieler has held positions as Controller in the construction industry and a non-profit organization serving youth in Texas. Ms. Stieler holds a B.B.A. in Accounting from Texas A&M University and an M.B.A. from Houston Baptist University.

Ryan T. Lupo is Manager, GIS & IT of EnCap Flatrock Midstream. Mr. Lupo joined EnCap Flatrock Midstream in 2019, bringing over 10 years of Geographic Information Systems knowledge and experience. Prior to joining EnCap Flatrock Midstream, Mr. Lupo spent nearly five years at Howard Energy Partners building a GIS infrastructure as a Senior GIS Analyst. Before his role at Howard Energy Partners, Mr. Lupo grew his experience in Occidental Petroleum’s Information Technology GIS group supporting Oxy’s worldwide GIS infrastructure and growing their South Texas and Mid-Con GIS systems. Mr. Lupo holds a B.S. in Geographic information Systems from Texas A&M University.

Nix L. Park is an Associate at EnCap Flatrock Midstream. Mr. Park supports all finance, administrative, and accounting functions for EFM’s funds and portfolio companies. Prior to joining EnCap Flatrock Midstream in 2025, Mr. Park was an Investment Banking Associate at Texas Capital’s Energy Investment Bank in Dallas, where he focused on M&A and equity capital markets across the energy sector. Prior to Texas Capital, Mr. Park was an analyst in the merchant banking group at Amherst Holdings, where he focused on asset management and debt capital markets for a real estate fund with $16 billion in AUM. Mr. Park holds a B.A. in Economics from the University of Texas. 

Laura E. Garner is an Office Manager for EnCap Flatrock Midstream’s Houston office. She joined EnCap Flatrock Midstream in 2015 and is responsible for the management of administrative and office functions. Prior to joining EnCap Flatrock Midstream, Ms. Garner was an Executive Assistant in Asset Management at Tudor, Pickering, Holt & Co. Prior to that, she was a Lending Assistant at Amegy Bank in the Private Banking Group. Ms. Garner holds a B.B.A. in Finance from Texas A&M University-Corpus Christi.

Aimee M. Rogers is an Office Manager for Encap Flatrock Mistream’s San Antonio office. Mrs. Rogers joined Encap Flatrock Midstream in 2020 and is responsible for the administrative functions of the firm’s San Antonio Office. She studied Psychology at Alamo Colleges and has held similar positions with WellMed Medical Management and Provenir Healthcare in San Antonio.

Mindy S. Hinds is an Administrative Assistant for EnCap Flatrock Midstream’s Oklahoma office. Ms. Hinds joined EnCap Flatrock Midstream in 2011 and is responsible for the administration of the firm's Oklahoma City office. She studied business at Michigan State University and has held similar positions with Imperial Inc. in Oklahoma City and New England Life Insurance in Tulsa.