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Sunlands Technology Group Announces Unaudited Second Quarter 2026 Financial Results Exhibit 99.1 BEIJING , August 20 , 2026 -- Sunlands Technology Group ( NYSE : STG ) ( “ Sunlands ” or the “ Company ” ) , a leader in China's adult online education market and China's adult personal interest learning market , today announced its unaudited financial results for the second quarter ended June 30 , 2026 . Second Quarter 2026 Financial and Operational Snapshots Net revenues were RMB406.4 million ( US $ 59.9 million ) , compared to RMB539.0 million in the second quarter of 2025 . Gross billings ( non - GAAP ) were RMB286.2 million ( US $ 42.2 million ) , compared to RMB400.3 million in the second quarter of 2025 . Gross profit was RMB349.2 million ( US $ 51.5 million ) , compared to RMB469.4 million in the second quarter of 2025 . Net income was RMB83.5 million ( US $ 12.3 million ) , compared to RMB126.6 million in the second quarter of 2025 . Net income margin¹ was 20.5 % , compared to 23.5 % in the second quarter of 2025 . New student enrollments² were 95,280 , compared to 159,154 in the second quarter of 2025 . As of June 30 , 2026 , the Company's deferred revenue balance was RMB433.5 million ( US $ 63.9 million ) , compared to RMB585.3 million as of December 31 , 2025 . 1 Net income margin is defined as net income as a percentage of net revenues . 2 New student enrollments for a given period refer to the total number of orders placed by students that newly enroll in at least one course during that period , including those students that enroll and then terminate their enrollment with us , excluding orders of our low - price courses , such as “ mini courses ” and “ RMB1 courses " , which we offer in the form of recorded videos or short live streaming , to strengthen our competitiveness and improve customer experience . 1