Mr. Vern Yu reports

ALTAGAS ANNOUNCES UTILITIES LEADERSHIP TRANSITION AND CONTINUED EXECUTION OF LONG-TERM STRATEGY

AltaGas Ltd. has made a transition within its utilities leadership team, reflecting the depth of its internal talent and continued progress in executing its long-term utilities strategy.

Donald (Blue) Jenkins will be stepping down from his roles as executive vice-president of AltaGas and president of Washington Gas, effective June 30, 2026, to accept a role at another organization. AltaGas thanks Mr. Jenkins for his leadership and contributions to the growth, operational performance and strategic positioning of the company's utilities business since 2019 and wishes him continued success in his future endeavours. AltaGas will leverage its deep and experienced internal leadership team to seamlessly transition responsibilities and maintain strong execution across its utilities platform.

Effective July 1, 2026, Corine Bushfield will be appointed executive vice-president and president, utilities, of AltaGas. Ms. Bushfield has a strong record of converting strategy into results through operational excellence and disciplined execution, combined with the strategic and financial leadership that will be important for maximizing the long-term value of the utilities business. Ms. Bushfield joined AltaGas in 2016 and currently serves as executive vice-president and chief administrative officer, where she is responsible for human resources, information technology and supply chain management across the enterprise. A chartered professional accountant, she brings 30 years of industry experience, with prior roles as chief financial officer of Long Run Exploration, vice-president and assistant controller at Encana, and senior positions at PricewaterhouseCoopers.

William (Jason) Weekley will be appointed as chief operating officer, utilities, and president, Washington Gas, effective July 1, 2026. Mr. Weekley currently serves as senior vice-president, utilities operations, at Washington Gas and brings more than 25 years of experience across the natural gas utility sector. Mr. Weekley has a demonstrated record leading multistate operations, large-scale capital programs, and engineering and construction functions.

"This transition reflects the strength and depth of our leadership team," said Vern Yu, president and chief executive officer of AltaGas. "On behalf of the board and the entire AltaGas team, I want to thank Blue for his contributions to AltaGas's success. I would also like to congratulate both Corine and Jason for their expanded roles. The moves we have made today speak to the calibre of talent at AltaGas and we are confident in our ability to seamlessly transition responsibilities internally. Corine's proven track record will enable us to continue advancing AltaGas's utilities strategy, driving operational excellence, and delivering safe, reliable service to our customers."

About AltaGas Ltd.

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.

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