Mr. Jon Morrison reports

ALTAGAS LTD. ANNOUNCES AGGREGATE $600 MILLION MEDIUM TERM NOTE OFFERINGS

AltaGas Ltd. has agreed to issue $350-million of senior unsecured medium-term notes with a coupon rate of 5.141 per cent, maturing on March 14, 2034, and $250-million of senior unsecured medium-term notes with a coupon rate of 5.597 per cent, maturing on March 14, 2054.

The offering is expected to close on or about March 14, 2024. The net proceeds resulting from the offering will be used to refinance the company's March, 2024, medium-term note maturities, to pay down other existing indebtedness, to finance working capital and for general corporate purposes.

The offering is being made through a syndicate of investment dealers co-led by CIBC World Markets Inc., National Bank Financial Inc. and TD Securities Inc. under AltaGas's short form base shelf prospectus dated March 31, 2023, as supplemented by a prospectus supplement dated May 11, 2023, and related pricing supplement dated March 11, 2024.

Further to the press release of March 8, 2024, the board of directors of AltaGas approved a 29.75-cent-per-share quarterly common share dividend to be paid to shareholders of record on March 15, 2024, and payable on March 28, 2024.

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.

We seek Safe Harbor.