STX's consolidated revenue contracted for four straight years, from KRW 1.19 trillion in 2022 to KRW 903.8 billion in 2023, KRW 827.8 billion in 2024, and KRW 641.3 billion in 2025.
Operating losses appeared to narrow from KRW -2.0 billion in 2022 (margin -0.2%) to KRW -15.0 billion in 2023 (-1.7%) and KRW -8.7 billion in 2024 (-1.1%), before widening sharply to KRW -61.9 billion in 2025 (-9.7%).
Net loss attributable to owners followed a similar path, deepening from KRW -13.6 billion (2022) and KRW -50.5 billion (2023) to KRW -44.0 billion (2024) and then KRW -166.2 billion in 2025, a jump that likely reflects one-off items such as asset revaluations and write-downs tied to the rehabilitation filing.
Total equity stayed positive at KRW 102.4 billion (2022), KRW 148.6 billion (2023), and KRW 118.7 billion (2024) before flipping to KRW -49.4 billion in 2025, entering complete capital impairment, with owners' equity falling as low as KRW -114.4 billion.
Operating cash flow, by contrast, turned positive for two consecutive years, from KRW -61.2 billion in 2023 to KRW 35.0 billion in 2024 and KRW 34.5 billion in 2025, suggesting the company continued generating cash through inventory and receivables collection even as reported losses mounted.
On a quarterly basis, the third quarter of 2025 showed a relatively smaller loss, with revenue of KRW 182.6 billion, an operating loss of KRW -4.0 billion, and a net loss to owners of KRW -17.2 billion, but the fourth quarter of 2025, which coincided with the rehabilitation filing, saw revenue fall to KRW 122.4 billion while the operating loss widened to KRW -43.9 billion and the net loss to owners ballooned to KRW -126.0 billion.
Revenue then fell further to KRW 60.0 billion in the first quarter of 2026 with a net loss of KRW -44.1 billion, and to KRW 42.4 billion in the second quarter of 2026, where the net loss widened again to KRW -57.1 billion.
The cumulative net loss to owners over the most recent four quarters (Q3 2025 through Q2 2026) reached KRW -244.4 billion, a scale that exceeds any single full fiscal year in the dataset.