We’re family-owned with global reach and a people-first approach.

As the second generation to lead MX Holdings, Mike Lefton has been with the company for the entirety of his career. In 1984 he started his career as a scrap buyer at Pennex Aluminum. Over the years, he has held a variety of key leadership roles, including Trader for Metal Exchange, leading the RSI/Dross business unit, and overseeing the Transportation/Logistics department. In 1998, Mike led the development of the company’s proprietary trading software, which is still in use today. After serving as CEO from 2010 to 2017, Mike transitioned to Executive Chairman, where he works alongside the CEO to set the company’s strategic direction and preside over the board of directors. ​

Mike holds a Bachelor of Science in Business Administration from the University of Missouri-Columbia and an MBA from Washington University. He is actively involved in the community, currently serving as Board President for Variety the Children's Charity of St. Louis and on the boards of Barnes Jewish Hospital, Big Brothers Big Sisters of Eastern Missouri, and the St. Louis Men's Group Against Cancer. ​

One of Mike’s favorite volunteer experiences is Variety’s Bikes for Kids program, where the Metal Exchange team builds bicycles for children with disabilities. He takes great pride in MX Holdings’ commitment to being people-focused and purpose-driven, ensuring that the company makes a positive impact on both its employees and the community. ​

Outside of work, Mike enjoys ice hockey, skiing, golf, traveling, and spending time with his family. His go-to karaoke song is “New York, New York,” and his favorite use of aluminum is sitting on an ice-cold bleacher seat while watching a hockey game. 

Since joining MX Holdings in 2016, Matt Rohm has served in several key leadership roles, including Chief Financial Officer (2016-2021) and Chief Operating Officer (2022), before being named Chief Executive Officer in 2023. In his current role, Matt is responsible for serving the needs of over 700 employees across Metal Exchange, Pennex, and MX Holdings, ensuring the company’s continued success and growth. ​

Matt holds a Bachelor of Science in Industrial Engineering from Bradley University and an MBA from Washington University in St. Louis. Prior to joining MX Holdings, Matt served in leadership positions at companies that include Energizer Holdings, Sun Edison, and Anheuser-Busch, where he served for 11 years, including 9 years supporting Metal Container Corporation and leading beverage can sheet procurement.

In addition to his professional responsibilities, he serves as a board member for the Missouri Humane Society and is an Advisory Board Member for Live Inspired by John O'Leary. He encourages all MX holdings employees to get involved in the community, and one of his favorite volunteer experiences while at the company was being involved with the STL Cardinal Toys drive for BJC Children's Hospital. ​​

When it comes to MX Holdings, Matt takes pride in the company’s people, values, and culture. Outside of work, he enjoys walking his four dogs, golfing, cooking (particularly grilling and using his Blackstone), attending concerts, and, on occasion, singing his go-to karaoke song, "Pink Houses" by John Mellencamp. As for his favorite use of aluminum? Cans for cold beverages, of course!

Mark Butterfield joined MX Holdings in 2022 and currently serves as President of Manufacturing, overseeing end-to-end manufacturing operations, including casting, extrusion, fabrication, and assembly. He also leads the strategic pillars of safety, talent development, business development, financial and risk management, innovation, and operational excellence across MX Holdings’ manufacturing facilities. ​

Mark studied Mechanical Engineering at Miami University before starting his career as a CAD Operator, working in various technical roles before advancing to VP of Engineering at Magnode Corp. He later transitioned into operations and management, where he oversaw multi-site, vertically integrated plants focused on casting, extrusion, fabrication, and assembly. Before joining MX Holdings, he served as Managing Director of Aluminum at Shape Corp.​

Mark is actively involved as a leader in the aluminum industry. He currently serves as Chairman of the Aluminum Extruders Council (AEC) and Co-Chairman of the ET Foundation. He has also held leadership roles such as Chairman of the Automotive Committee at AEC and has contributed as an editor for Light Metal Age. ​

What Mark values most about MX Holdings is the company’s commitment to its core values—Safety, Integrity, Caring, and Growth—and the genuine focus on developing people and community support. One of his favorite volunteer experiences at MX Holdings has been serving meals alongside company leadership.​

Outside of work, Mark enjoys contributing to his family’s seventh-generation working farm and spending time with family and friends. His favorite use of aluminum is knowing that his friends and family are safer on the roads due to Pennex products, such as bumpers and crush cans, which enhance road safety by providing crash absorption and protection in vehicles.

Trevor Hansen was promoted to President of Metal Exchange in 2025. He originally joined Pennex in 2024 as Chief Financial Officer, where he led the Finance team in supporting the company’s manufacturing operations. Prior to joining Pennex, Trevor held several leadership roles, including serving as CFO of Kataman Metals from 2015 to 2024. He also spent over a decade with Anheuser-Busch, where he held positions such as President of Anheuser-Busch Recycling, Vice President of Packaging Procurement, and Vice President of Finance for the Packaging Division.

Trevor holds a Bachelor’s degree in History and Political Science from Miami University (Ohio) and an MBA with a concentration in Finance from Washington University in St. Louis. Though new to Pennex, Trevor quickly felt at home thanks to the welcoming team. Outside of work, he enjoys spending time with his four children and, while a former triathlete, now prefers travel, hiking, and biking. When it comes to karaoke, he sticks to group performances, and his favorite use of aluminum? Beer cans, without a doubt!

Dan Jarvis was promoted to Chief Financial Officer of MX Holdings in 2025. In this role, he will oversee finance responsibilities across Metal Exchange and Pennex, including global controllership, treasury, banking, tax, and financial reporting. He has been with the company since 2013, previously serving as CFO of Metal Exchange since 2022. Over the course of his career at the company, he has also held several key positions, including Accounting Manager, Trading Division Controller, and Corporate Controller.

Dan earned both his Bachelor of Science in Accountancy and Business Administration, with a minor in Economics, from Truman State University, as well as his Master’s in Accountancy. His leadership and dedication were recognized with the MXH Growth Champion award. One of his most meaningful volunteer experiences at MX Holdings has been participating in the Operation Food Search backpack program, which provides weekly sacks of kid-friendly, shelf-stable food to help students get through weekends when school meals are unavailable.

Outside of work, Dan enjoys spending time with his kids, hiking, traveling, and cooking. He can often be found working on home improvement projects in his free time. His go-to karaoke song is “Don’t Stop Believing” by Journey, and at home, his family shows their appreciation for aluminum by enjoying plenty of canned water.

Dave McCoy was promoted to Chief Administration and Strategy Officer of MX Holdings in 2025. In this role, he will oversee Corporate Development and Strategy, Global FP&A, IT, Marketing, and Industry Analysis, strengthening the company’s foundation for operational excellence.

Dave has been with MX Holdings since 2016, previously serving as Senior Vice President of Corporate Planning and Development. Before that, he held several leadership roles within MX Holdings, including CFO of MXH Manufacturing, VP of Finance, and Director of FP&A.

His broader career experience also includes key financial and leadership positions at SunEdison, Express Scripts, and Home Decorators Collection, a subsidiary of Home Depot. Dave holds a Bachelor’s degree in Business Administration from Belmont University and an MBA in Finance and International Business from Saint Louis University. Among his professional achievements, he was named MX Holdings’ Growth Champion in 2019 and earned a Green Belt in Operational Excellence.

In addition to his corporate leadership, Dave serves on the board of the South Whidbey Schools Foundation. Outside of work, he enjoys golfing, hiking, traveling, and spending time with his family. His go-to karaoke song is “Country Roads” by John Denver, and after years of experience in the manufacturing industry, he’s developed an appreciation for the complex applications of aluminum in automotive parts.

Becky Parisi has been with MX Holdings since 2015, and as Vice President of Human Resources, she leads the HR team and drives the company’s overall people strategy. Her focus is on attracting top talent, fostering an inclusive and supportive work culture, and supporting employee growth and development. Becky oversees key HR functions, including talent acquisition, total rewards, learning and development, and ensuring compliance with labor laws to help MX Holdings meet the evolving needs of its customers. ​

Throughout her career, Becky has held several key HR roles. Prior to her current role, she served as Director of Human Resources at MX Holdings and Compensation Benefits Manager. Before joining the company, she was Director of Human Resources at Circulation Development, Inc. ​

Becky is a member of the Society of Human Resource Management (SHRM) and the Human Resources Team Leader for the Aluminum Extruder Council’s Workforce Development Team. She holds a Bachelor of Arts in Business from Lindenwood University and completed the Human Resource Executive Education Program at Michigan University. ​

Some of Becky’s favorite volunteer experiences at MX Holdings was serving with the Executive Leadership Team at the Greenville, PA food pantry, as well as working alongside the HR team at Operation Food Search, or painting the break room at our facility in York, PA. She finds all her volunteer experiences to be incredibly meaningful in their own ways. ​

Outside of work, Becky enjoys spending time with her husband, their blended family of five kids, and their two dogs. Live music is a big passion of hers as well as cooking, and hosting meals with friends and family, and participating in her family’s annual candy-making tradition. They love outdoor activities like hiking, biking, camping, and riding Side X Sides in the mountains. Aluminum plays a huge role in her everyday life—from window frames and kitchen appliances to the safety of her family in their F-150.

Jason Barr joined MX Holdings in July 2023 as Vice President of Procurement, where he leads the newly formed procurement organization. His focus is on enhancing external relationships with key partners and suppliers, improving procurement processes, and leveraging systems and technology to better understand and manage spend across the enterprise. ​

Jason began his career at Energizer Holdings, Inc., where he worked for 16 years, starting as a Production Supervisor and later leading over $1.2 billion in global spend as Director of Indirect Procurement. He then moved to The J.M. Smucker Company, where he spent 9 years as Vice President of Indirect Procurement and Shared Services, overseeing $2 billion in enterprise spend. During his time at Smucker, he implemented Supply Chain Financing, generating over $500 million in free cash flow and building industry-leading procurement capabilities. ​

He holds a double major in Economics and Business Administration from Muskingum College (New Concord, OH). Jason is proud of MX Holdings' family heritage and values, finding it refreshing to lead authentically without the pressures of a publicly traded company. ​

Outside of work, Jason enjoys fishing on Lake Erie with his family, collecting Cleveland sports team bobbleheads, attending country music concerts, and playing Fortnite with his daughters. He and his wife also run an Airbnb and enjoy remodeling houses. While he doesn’t sing, if he did, it would be something by Eric Church or HARDY. His favorite use of aluminum is disposable roasting pans, which he often uses when smoking meats.

Carla Martin joined MX Holdings in 2023 as General Counsel and is a key member of the Executive Leadership Team. She provides strategic guidance on legal matters, leveraging her deep expertise in corporate transactions, mergers and acquisitions, licensing, intellectual property, employment, and international law. Carla plays a crucial role in shaping the company’s legal framework, supporting its rapid growth while mitigating risks. What she values most about working at MX Holdings is the opportunity to build the company’s in-house legal function from the ground up, alongside a team of thoughtful and driven colleagues. ​

Before joining MX Holdings, Carla was the General Counsel and Chief Compliance Officer at Novus International, Inc., where she spent nearly eleven years devising innovative legal strategies. Her leadership earned multiple awards for her efforts in driving extraordinary results. Carla has also held senior counsel roles at Nestlé Purina PetCare Company and Macy’s, Inc., after starting her legal career at the firm Lewis Rice and Fingersh. ​

Carla is licensed to practice law in Missouri and Illinois and holds a veterinary medicine license in Missouri. She is a member of the Association of Corporate Counsel and the Greater St. Louis Veterinary Medical Association. Originally from Anchorage, Alaska, Carla earned her bachelor’s degree in biology and doctorate in veterinary medicine from Iowa State University, and her law degree, magna cum laude, from Saint Louis University, where she also earned a Health Law Certificate. ​

Outside of law, Carla began her professional career as an emergency and critical care veterinarian, providing care for critically ill and injured animals. She hopes to return to veterinary medicine as a volunteer when she retires. As for karaoke, she’ll leave it to others, but when it comes to aluminum, she’s a big fan of its versatility, especially aluminum foil.