HASI Announces New Leadership Team Appointments, Effective March 2025
HA Sustainable Infrastructure Capital, Inc., a leading investor in sustainable infrastructure assets, has officially announced significant changes to its executive leadership team. These leadership appointments, which will take effect on March 1, 2025, underscore HASI’s continued commitment to strengthening its executive team and reinforcing its position as a leader in sustainable infrastructure investment.
Jeffrey A. Lipson, HASI’s President & Chief Executive Officer, expressed his enthusiasm regarding these transitions, emphasizing the depth of talent and leadership experience within the company. “I am pleased to announce these management changes, highlighting the contributions of high-performing teammates, each of whom has been with HASI for more than eight years,” Lipson stated. “Marc, Chuck, Nate, and Michelle embody the vision, expertise, determination, and diligence essential to driving HASI’s resilient business forward. Our deep talent pool continues to be a cornerstone of our success, and I am fully confident that these leaders will thrive in their new roles.”
Key Leadership Changes
The newly announced appointments reflect HASI’s strategic focus on leadership continuity, operational excellence, and investment growth. The following individuals will assume their new roles in March 2025:
Marc T. Pangburn – Chief Revenue & Strategy Officer
Marc T. Pangburn, currently serving as Executive Vice President and Chief Financial Officer, will transition into the role of Chief Revenue & Strategy Officer. Having been with HASI since 2013, Pangburn has played an instrumental role in the company’s strategic development and financial operations. Before becoming CFO, he served as Co-Chief Investment Officer, demonstrating his deep expertise in investment strategy and financial oversight.
During his tenure as CFO, Pangburn oversaw several transformative initiatives, including HASI’s CarbonCount Holdings LLC (CCH1) co-investment partnership with KKR. He also played a pivotal role in HASI’s successful upgrade to an investment-grade debt issuer. His leadership in financial planning and investment structuring has helped HASI expand its investment portfolio and improve its financial standing.
In his new capacity as Chief Revenue & Strategy Officer, Pangburn will lead the investment and portfolio teams while overseeing strategic transactions, including asset management activities. His focus will be on driving revenue growth, optimizing asset performance, and identifying new investment opportunities in the sustainable infrastructure sector.
Charles “Chuck” W. Melko – Executive Vice President, Chief Financial Officer & Treasurer
Charles “Chuck” W. Melko, currently serving as Senior Vice President, Chief Accounting Officer, and Treasurer, will step into the role of Executive Vice President, Chief Financial Officer, and Treasurer. Since joining HASI in 2016, Melko has demonstrated his expertise in financial management, risk assessment, and capital markets transactions. He took on the role of Chief Accounting Officer in 2017 and later assumed the additional responsibility of Treasurer in 2021.
Throughout his tenure, Melko has played a critical role in overseeing the company’s expanding financial reporting operations. As HASI has grown in complexity, Melko has successfully navigated various financial and regulatory challenges, ensuring compliance with evolving industry standards. Additionally, he has led numerous bank debt and capital markets transactions, contributing to HASI’s financial stability and growth.
As CFO and Treasurer, Melko will continue to oversee the company’s financial planning, capital management, and reporting functions. His leadership will be essential in ensuring HASI’s sustained financial health and positioning the company for long-term success.
Nathaniel “Nate” J. Rose – Senior Managing Director, Investments
Nathaniel “Nate” J. Rose, who currently serves as Executive Vice President and Chief Investment Officer, will transition to the role of Senior Managing Director, Investments. Rose has been an integral part of HASI since 2000 and has held several senior leadership positions over his long tenure. His contributions have been instrumental in shaping the company’s investment strategy and executing key transactions.
Under Rose’s leadership, HASI’s managed assets have grown significantly, reaching approximately $14 billion. His experience and strategic vision have been critical in executing transactions that align with HASI’s mission of sustainable infrastructure investment.
Rose has expressed his desire to take on a reduced role while continuing to contribute to the company’s success. As Senior Managing Director, Investments, he will remain actively involved in investment strategy, mentoring emerging leaders within the organization, and guiding critical financial transactions.
Michelle E. Whicher – Chief Accounting Officer
Michelle E. Whicher, currently Senior Vice President and Controller, will assume the role of Chief Accounting Officer. Having joined HASI in 2014, Whicher has built a reputation as a highly skilled financial executive with deep expertise in accounting, reporting, and financial oversight. In 2021, she was appointed as Controller, a role in which she played a crucial part in strengthening HASI’s accounting functions amid the company’s rapid expansion.
Throughout her tenure, Whicher has led critical accounting and financial reporting initiatives, ensuring compliance with regulatory standards and maintaining transparency in financial disclosures. Her leadership has been instrumental in supporting HASI’s growth, and she has been a key driver of process improvements in financial reporting.
As Chief Accounting Officer, Whicher will oversee HASI’s accounting and financial reporting operations, ensuring accuracy, regulatory compliance, and alignment with the company’s strategic objectives. Her expertise will be vital in sustaining HASI’s commitment to financial integrity and operational excellence.
Strategic Vision and Organizational Impact
These executive leadership appointments come at a pivotal time for HASI as it continues to expand its portfolio of sustainable infrastructure investments. The company remains focused on investing in projects that drive environmental and economic benefits while delivering value to shareholders.
By appointing seasoned executives with deep institutional knowledge and proven leadership capabilities, HASI aims to further strengthen its investment strategy, financial operations, and revenue growth initiatives. The transitions also reflect HASI’s commitment to leadership development and internal succession planning.
Under the guidance of CEO Jeffrey A. Lipson and the newly appointed leadership team, HASI is well-positioned to navigate the evolving landscape of sustainable finance and infrastructure investment. The company remains dedicated to its mission of accelerating the transition to a low-carbon economy through innovative investment solutions.
HASI’s Commitment to Growth and Innovation
As the company moves forward with these leadership transitions, HASI remains focused on several key priorities:
- Expanding Investment Opportunities – HASI will continue identifying and capitalizing on new investment opportunities in sustainable infrastructure, clean energy, and climate-focused assets.
- Enhancing Financial Strength – With strong financial leadership, HASI aims to further optimize its capital structure, manage financial risks effectively, and enhance shareholder value.
- Driving Sustainable Impact – The company remains committed to supporting projects that align with environmental sustainability goals, reducing carbon footprints, and advancing climate resilience.
- Fostering Leadership Development – HASI will continue nurturing talent within the organization, ensuring leadership continuity and fostering a culture of innovation and excellence.
With a strong leadership team in place and a clear strategic vision, HASI is well-equipped to maintain its position as a premier investor in sustainable infrastructure. The newly appointed executives bring a wealth of experience and expertise, reinforcing HASI’s ability to drive long-term success in an evolving market.
As HASI looks toward the future, the company remains committed to delivering high-impact investment solutions that promote sustainability, resilience, and financial growth. With the new leadership appointments in effect, HASI is poised to accelerate its mission of building a more sustainable and prosperous future.
