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➤ MERCER EXHIBIT 99.1 For Immediate Release MERCER INTERNATIONAL INC . REPORTS SECOND QUARTER AND FIRST HALF 2021 RESULTS AND ANNOUNCES QUARTERLY CASH DIVIDEND OF $ 0.065 Selected Highlights Record quarterly wood products segment results Second quarter Operating EBITDA * of $ 83.8 million and net income of $ 21.4 million Completed Capital Program to Increase Stendal Mill production by 80,000 ADMTs per year NEW YORK , NY , July 29 , 2021 - Mercer International Inc. ( Nasdaq : MERC ) today reported second quarter 2021 Operating EBITDA increased to $ 83.8 million from $ 40.5 million in the second quarter of 2020 and from $ 82.0 million in the first quarter of 2021 . In the second quarter of 2021 , net income was $ 21.4 million ( or $ 0.32 per share ) compared to a net loss of $ 8.4 million ( or $ 0.13 per share ) in the second quarter of 2020 and net income of $ 5.9 million ( or $ 0.09 per share ) in the first quarter of 2021 . In the first half of 2021 , Operating EBITDA increased by 70 % to $ 165.8 million from $ 97.5 million in the same period of 2020. In the first half of 2021 , net income was $ 27.3 million ( or $ 0.41 per share ) compared to a net loss of $ 11.8 million ( or $ 0.18 per share ) in the same period of 2020 . Mr. David Gandossi , the Chief Executive Officer , stated : “ In the second quarter , we successfully and safely completed major capital programs to improve the performance of our Stendal and Peace River mills . At Stendal we have added 80,000 tonnes of NBSK pulp capacity with the addition of two new batch digesters which are currently being ramped up . At Peace River we rebuilt its recovery boiler and are ramping up its operations . Our Friesau sawmill's strong second quarter production allowed it to continue significant sales into the very strong U.S. market and to achieve record quarterly operating income of $ 42.3 million . In the current quarter , approximately 39 % of lumber sales volumes were to the U.S. * Operating EBITDA is not a measure of financial performance under accounting principles generally accepted in the United States ( " GAAP " ) and should not be considered in isolation or as a substitute for analysis of our results as reported under GAAP . See page 6 of the financial tables included in this press release for a reconciliation of net income ( loss ) to Operating EBITDA .