Our Team

We are committed to providing creative, practical solutions to create long-term value for our partners.

David Modesett

President

About David

David has more than 35 years of experience in the energy business. As an entrepreneur, he has built three companies while expanding scope and expertise during seismic changes in world energy markets.

In 2004, David founded Vega Energy Partners. Vega focused on structuring solutions for producers, midstream companies, utilities, LNG exporters, large end-users, and retail aggregators. These solutions included natural gas infrastructure development, asset optimization, and physical commodity management services. Business operations focused on Infrastructure Development and Infrastructure Management.

Vega created and aggregated demand across the eastern United States, leveraging this demand to drive $6.0 Billion of capital projects and over 5.6 Bcf/d of capacity additions including brownfield pipeline expansion projects and three greenfield pipeline projects. Vega’s long-term infrastructure-based solutions helped increase supply liquidity, lower costs to consumers, and reduce carbon emissions in the U.S., Europe, and India.

In 2021, David sold Vega Energy to a global commodity company. After the sale, David, with a core group of former Vega employees, founded Arc57.

Matt Wenaas

Corporate Development

About Matt

Matt joined Arc57 at its founding in April 2021. Prior to working at Arc57, Matt worked for its predecessor company Vega Energy Partners across a variety of roles, most recently as Head of Analytics. His responsibilities included fundamentals analysis and evaluation of all transactions, financial modeling, supporting capital raises, and analyzing market fundamentals.

Matt graduated from the University of Calgary in 2006 with a Bachelor of Commerce degree in Finance.

Kasyn Stevenson

Legal

About Kasyn

Kasyn joined Arc57 at its founding in April 2021. Prior to working at Arc57, Kasyn worked for its predecessor company Vega Energy Partners as in house counsel. Prior to Kasyn’s time at Vega and Arc57, she worked for Norton Rose Fulbright and Baker Botts as transactional counsel, focused primarily on energy company mergers and acquisitions and joint ventures.

Kasyn graduated from Pomona College in 2009 as a Bachelor of Arts in Mathematical Economics and Politics double major. Immediately after graduation, Kasyn attended the University of Texas at Austin and obtained her Juris Doctor in 2012.

John Alford

Business Development

About John

John joined Arc57 in 2023. Prior to working at Arc57, John spent two years doing Business Development and Origination at Six One Commodities, assisting the company in building out its Natural Gas Trading portfolio. Before Six One, John was at Vega Energy for 9 years and held several roles within the Business Development and Trading & Scheduling groups. John also worked at Protiviti in Audit and Sarbanes-Oxley compliance groups.

John graduated Texas A&M University in 2010 with a Bachelor of Business Administration degree in Finance.

Chris Beggins

Business Development

About Chris

Chris joined Arc57 at its founding in April 2021. Chris started career his in the energy industry in 1987 developing a marketing trading platform for Tejas Power Corporation. In 1993, Chris formed Inventory Management and Distribution company (IMD) to perform Asset Management Agreements with utilities across the United States. After selling IMD to Koch energy trading in 2000, Chris stayed on and led business development activities until the company was sold to Merrill Lynch Commodities. At Merrill, Chris assumed the role of Managing Director of Business Development for natural gas, power, crude, and coal. In 2008, Merrill, was acquired by Bank of America at which point Chris left to join with Vega Energy to pursue unregulated opportunities in natural gas marketing. At Vega, Chris helped structure a number of pipeline transactions to bring shale gas to the ultimate end user. After the sale of Vega Energy, Chris joined Arc57 in a business development role.

Tim Hebert

Business Development

About Tim
Tim joined Arc57 in 2025, focused on strategy and operations to enhance profitability and long-term growth. Prior to Arc57, Tim served as an Investment Banking Associate in Energy M&A at Evercore, advising on midstream and upstream oil & gas transactions, logistics and energy transition, and capital raises. Before working in the private sector, Tim served nearly a decade in the U.S. Army, including as a Green Beret Special Forces Detachment Commander with 7th Special Forces Group, where he led multinational security partnerships and complex training missions in El Salvador. He began his military career as a Engineer Platoon Leader, supporting USAID in Liberia during the Ebola pandemic, and then serving as Battalion Engineer of the 75th Ranger Regiment.

Tim earned his MBA from The Wharton School at the University of Pennsylvania, majoring in Finance, and holds a Bachelor of Science in Mechanical Engineering Technology from Oklahoma State University.

Aaron Berg

Operations

About Aaron

Aaron is an operator with more than 20 years of experience building and scaling businesses in the energy sector. He began his career at Vega Energy Partners, where he advanced from analyst to President, helping lead the company’s growth, strategic transactions, and operational development through its sale to Six One Commodities. He later served as Chief Operating Officer, overseeing integration efforts across four global offices.

Most recently, Aaron was COO of Wise Rock, a venture-backed SaaS company serving the energy industry, where he helped drive greater than 10x growth in revenue and valuation while building the systems and team required to scale.

At Arc57, Aaron focuses on translating strategy into execution—aligning people, processes, and capital to build durable, high-performing businesses.

Aaron graduated from the University of Tulsa in 2005 with a B.S.B.A in Finance

Ashley Irwin

Operations

About Ashley

Ashley joined Arc57 in 2023. Prior to working at Arc57, Ashley spent two years as Treasurer and Head of Credit at Six One Commodities, assisting the company in increasing its borrowing base facility from $125M to $745M in one year. Before Six One, Ashley was at Vega Energy for 15 years and held several roles within the strategy and optimization group, including trading, scheduling, accounting, and risk management. Ashley also worked at KPMG Canada in the US Corporate Tax group and at Duke Energy North America in the Structuring group.

Ashley graduated the University of Texas in 2002 with a Bachelor of Science degree in Accounting and a Master of Science degree in Accounting.

Julie Pincus

Operations

About Julie

Julie joined Arc57 at its founding in April 2021. Prior to working at Arc57, Julie worked for Vega Energy Partners, Ltd. (VEP) for 13 years as Controller participating in growth from recently formed company to its ultimate sale. Prior to VEP, Julie’s Audit Manager position at KPMG, led her to the Controller position at BMC Software for nine years.

Julie graduated from Florida State University with a BS in Accounting. She is certified as a public accountant in Texas.

OFFICE

3701 Kirby, Suite 1166
Houston, TX 77098

Email

info@arc57.com