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EXHIBIT 99.1 For Immediate Release MERCER MERCER INTERNATIONAL INC . REPORTS FIRST QUARTER 2021 RESULTS AND ANNOUNCES QUARTERLY CASH DIVIDEND OF $ 0.065 Selected Highlights Record quarterly wood products segment results First quarter Operating EBITDA * of $ 82.0 million and net income of $ 5.9 million NEW YORK , NY , April 29 , 2021 - Mercer International Inc. ( Nasdaq : MERC ) today reported first quarter 2021 Operating EBITDA increased to $ 82.0 million from $ 57.0 million in the first quarter of 2020 and from $ 49.5 million in the fourth quarter of 2020 . In the first quarter of 2021 , net income was $ 5.9 million ( or $ 0.09 per share ) compared to a net loss of $ 3.4 million ( or $ 0.05 per share ) in the first quarter of 2020 and a net loss of $ 13.0 million ( or $ 0.20 per share ) in the fourth quarter of 2020 . Mr. David Gandossi , the Chief Executive Officer , stated : “ In the first quarter , our mills continued to run well and safely due to our extensive COVID - 19 protection measures . Our Friesau sawmill's strong operating results allowed us to take full advantage of the strong U.S. lumber market . Our strong first quarter results reflected improved pulp pricing across all of our markets . First quarter average European NBSK list prices were up $ 157 per ADMT , and average net prices in China were up $ 246 per ADMT compared to the prior quarter . Our wood products segment achieved another record quarterly result and continues to benefit from strong demand and robust pricing , particularly in the U.S. market . In the current quarter , approximately 67 % of our lumber revenues and 44 % of lumber sales volumes were to the U.S. which was our single largest market . * 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 .