NainTech's consolidated revenue grew from KRW 88.82bn in 2022 to KRW 123.05bn in 2023 and KRW 197.22bn in 2024, before falling sharply to KRW 82.37bn in 2025.
Operating profit swung between profit and loss each year: a KRW 5.22bn profit in 2022, a KRW 3.10bn loss in 2023, a KRW 4.63bn profit in 2024, and an KRW 8.92bn loss in 2025, with the operating margin deteriorating to -10.8% in 2025.
Net income attributable to owners was near breakeven at KRW 0.03bn in 2022, turned to an KRW 8.87bn profit in 2023, then widened into losses of KRW 5.72bn in 2024 and KRW 17.70bn in 2025; the company attributed the 2025 loss to temporary cost increases from restructuring and new business investment along with derivative valuation losses tied to convertible bonds and redeemable convertible preferred stock.
On a quarterly basis, Q2 2025 revenue of KRW 27.75bn and operating profit of KRW 0.84bn were offset by an KRW 8.32bn net loss driven by derivative valuation losses, while Q3 2025 revenue of KRW 22.11bn and an operating loss of KRW 1.36bn nonetheless flipped to a KRW 2.51bn net profit.
Q4 2025 was the weakest quarter, with revenue of KRW 16.61bn, an operating loss of KRW 7.01bn, and a net loss of KRW 9.41bn, reflecting bad debt expenses from clearing long-outstanding receivables combined with full expensing of personnel and R&D costs tied to a large North American project.
Q1 2026 marked a return to profitability with revenue of KRW 19.79bn (up 24.5% year-on-year), operating profit of KRW 1.47bn, and net income of KRW 0.98bn, and Q2 2026 sustained a second consecutive profitable quarter with net income of KRW 0.52bn despite an operating loss of KRW 0.47bn on revenue of KRW 12.72bn.
Quarterly revenue itself fluctuated—KRW 27.75bn, KRW 22.11bn, KRW 16.61bn, KRW 19.79bn, then KRW 12.72bn—so a clear sustained recovery in top-line scale has not yet been confirmed.
On the cash flow side, operating cash flow turned positive at KRW 7.81bn in 2025 despite the net loss, which can be interpreted as reflecting non-cash items such as bad debt expenses and derivative valuation losses.