Tourmaline Oil Corp. announced that it has agreed to issue $250 million aggregate principal amount of senior unsecured notes due January 25, 2028 (the "Notes"). The Notes will be issued at par for aggregate gross proceeds of $250 million and will bear interest at a fixed rate of 2.077% per annum, payable semi-annually on the 25th day of January and July of each year, commencing on July 25, 2021. Tourmaline believes this inaugural issuance of investment-grade debt is an important step towards diversifying its sources of low-cost capital and continuing its progression as one of the largest, most efficient producers of oil and gas in Canada. The Notes have been assigned a provisional rating of BBB, with a stable trend, by DBRS Limited (DBRS Morningstar). The Notes will be direct, unsecured obligations of Tourmaline and will rank equally with all other present and future unsecured and unsubordinated indebtedness of the Company. The Notes are being offered in Canada on a private-placement basis in reliance upon exemptions from the prospectus requirements under applicable securities legislation (the "Offering"). The Notes, offered on a best-efforts basis through a syndicate of agents co-led by Scotia Capital Inc., TD Securities Inc. and BMO Capital Markets Inc., are expected to be issued on or about January 25, 2021, subject to customary closing conditions. The net proceeds of the Offering will be used to repay existing indebtedness and for general corporate purposes.