AltaGas Ltd. ('AltaGas') (TSX: ALA) today announced that it has completed its issue of $400 million of senior unsecured medium term notes (the 'Offering') with a coupon rate of 4.638 percent, maturing on May 15, 2026. The net proceeds resulting from the Offering will be used to pay down existing indebtedness under AltaGas' credit facility and to refinance the senior unsecured medium-term note maturing in June 2023. The Offering continues to stagger, extend and de-risk AltaGas' capital structure and tenor profile. The Offering was made through a syndicate of investment dealers co-led by TD Securities Inc., CIBC Capital Markets Inc. and National Bank Financial Inc. under AltaGas' Short Form Base Shelf Prospectus dated March 31, 2023, Prospectus Supplement dated May 11, 2023 and related Pricing Supplement dated May 11, 2023.