ALTAGAS APPOINTS DEREK EVANS AS BOARD CHAIR SUCCESSOR

CALGARY, AB, March 6, 2026 /CNW/ - AltaGas Ltd. ("AltaGas" or the "Company") (TSX: ALA) today announced that its Board of Directors has approved a planned transition of the Board Chair role, effective May 1, 2026, following the Company's 2026 Annual Meeting of Shareholders. Derek Evans has been appointed as the next Board Chair. Pentti Karkkainen will continue to serve as Chair until May 1, 2026, and will remain on the Board as an active Director thereafter to support continuity and ongoing Board leadership.

This planned transition reflects the Board's long‑term succession planning process and its commitment to strong governance practices, including regular Board renewal and continuity planning.

"It has been a privilege to serve as Chair," said Pentti Karkkainen, AltaGas' outgoing Board Chair. "I look forward to supporting Derek and the Board through this next chapter. AltaGas has strong momentum, an exceptional leadership team, and a clear strategy for long‑term success."

"I am honoured to assume the role of Chair and appreciate the confidence the Board has placed in me," said Mr. Evans. "I look forward to working closely with my fellow Directors and the management team to build on AltaGas' strong foundation and advance its long‑term priorities."

"On behalf of the entire organization, I want to thank Pentti for his outstanding leadership and stewardship of the Board," said Vern Yu, AltaGas' President and Chief Executive Officer. "I look forward to welcoming Derek into the role in May and partnering closely as we continue delivering long‑term value for our stakeholders."

Derek Evans Biography
Mr. Evans is a distinguished energy industry leader with more than four decades of experience. Most recently, he served as President and Chief Executive Officer of MEG Energy, where he led a successful turnaround and delivered significant shareholder value over his six‑year tenure, prior to his retirement in 2024. Previously, Mr. Evans served as President and Chief Executive Officer of Pengrowth Energy and Focus Energy Trust, and earlier in his career held senior operational and leadership roles at Renaissance Energy.

Mr. Evans is a strong advocate for the energy industry and its essential role in supporting modern society. He also serves as a Director of Franco‑Nevada Corporation, a leading gold‑focused royalty and streaming company, where he is Chair of the Compensation and ESG Committee. He is also actively involved with several not‑for‑profit organizations.

ABOUT ALTAGAS
AltaGas is a leading North American infrastructure company that connects customers and markets to affordable and reliable sources of energy. The Company operates a diversified, lower-risk, high-growth energy infrastructure business that is focused on delivering stable and growing value for its stakeholders.

For more information visit www.altagas.ca or reach out to one of the following:

Jon Morrison
Senior Vice President, Corporate Development and Investor Relations
[email protected]

Aaron Swanson
Vice President, Investor Relations
[email protected]

Media Inquiries
1-403-206-2841
[email protected]

FORWARD-LOOKING INFORMATION
This news release contains forward-looking statements. When used in this news release, the word "will" and similar expressions, as they relate to AltaGas or an affiliate of AltaGas, are intended to identify forward-looking statements. In particular, this news release contains forward-looking statements with respect to, among other things, the Board Chair transition and the commitment to strong governance practices, including regular Board renewal and continuity planning. These statements involve known and unknown risks, uncertainties and other factors that may cause actual results or events to differ materially from those anticipated in such forward-looking statements. Such statements reflect AltaGas' current views with respect to future events based on certain material factors and assumptions and are subject to certain risks and uncertainties, including without limitation, changes in market, competition, governmental or regulatory developments, general economic conditions and other factors set out in AltaGas' public disclosure documents. Many factors could cause AltaGas' actual results, performance or achievements to vary from those described in this news release, including without limitation those listed above. These factors should not be construed as exhaustive. Should one or more of these risks or uncertainties materialize, or should assumptions underlying forward-looking statements prove incorrect, actual results may vary materially from those described in this news release as intended, planned, anticipated, believed, sought, proposed, estimated or expected, and such forward-looking statements included in, or incorporated by reference in this news release, should not be unduly relied upon. Such statements speak only as of the date of this news release. AltaGas does not intend, and does not assume any obligation, to update these forward-looking statements. The forward-looking statements contained in this news release are expressly qualified by this cautionary statement.

SOURCE AltaGas Ltd.