NIHON ISK CO.,LTD.
7986・Standard Market・Other Products
Business
Nippon ISK Co., Ltd. is a long-established manufacturer founded in 1916, listed on the TSE Standard Market. It operates three core businesses: fireproof safes and Portable Cash Boxes (Steel Products-Related), Dental Units and other dental medical equipment (Dental-Related), and metal multipurpose storage units such as coin lockers (Storage Cabinet & Locker-Related), complemented by Real Estate Leasing and Tool Sales as supplementary segments. The company also procures parts through its consolidated subsidiary Vian Air Japan Co., Ltd. Major customers include Kokuyo Co., Ltd. (9.0% of net sales), with a broad customer base spanning corporations, medical institutions, and public facilities. Consolidated net sales for FY2025 were ¥6,064 million.
Business Model
The three core businesses (Steel Products, Dental, and Storage Cabinet & Locker) are all fundamentally based on manufacturing and sales at the company's own factories. Operating primarily on a build-to-forecast production model, the company maintains product competitiveness through continued investment in technology development and quality control (R&D expenses of ¥179 million). The Real Estate Leasing-Related Business, with an operating margin of 87.6%, serves as an extremely high-profitability segment that underpins overall company profits. Capital expenditures and working capital are funded entirely through internal funds, maintaining a debt-free management structure.
Company Strengths
In FY2025 (ending March 2025), the operating margin on sales (ordinary income to sales ratio) reached 10.0% (against a target of 3% or more) and the equity ratio reached 70.4% (against a target of 60% or more), both substantially exceeding the company's own targets. Against net assets of ¥4,708 million, the company maintains a debt-free management policy with zero interest-bearing liabilities, resulting in an extremely robust financial foundation.
The Real Estate Leasing-Related Business is an ultra-high-margin segment, boasting operating income of ¥155 million on sales of ¥178 million, an operating margin of 87.6%. Its stock-type revenue model makes it relatively unaffected by economic fluctuations, contributing to a stable uplift in company-wide profits.
Although there was a temporary decline in FY2022 (ending March 2022) (sales of ¥5,247 million, operating income of ¥130 million), both sales and operating income increased for three consecutive periods from FY2023 (ending March 2023) onward. In FY2025 (ending March 2025), sales reached ¥6,064 million (up 2.8% year on year) and operating income reached ¥596 million (up 14.8% year on year), indicating that the recovery and growth trajectory has become firmly established.
ENVALITH's Perspective
Performance Trend
Net sales increased for five consecutive periods, from ¥5,516 million in FY2021 to ¥6,064 million in FY2025. Operating profit fell to ¥130 million in FY2022, then improved for three consecutive periods thereafter, from ¥477 million to ¥519 million to ¥596 million. In Q1 of FY2026 (ending December 2026), net sales were ¥1,696 million (up 1.3% YoY), operating profit was ¥223 million (up 23.9% YoY), and profit attributable to owners of parent was ¥151 million (up 40.4% YoY), with profit growth significantly outpacing sales growth. The main drivers of the margin improvement were a decrease in cost of sales from ¥1,163 million in the same period of the prior year to ¥1,155 million, and a reduction in SG&A expenses from ¥331 million to ¥318 million. Although downside risks remain from external factors such as price inflation and fluctuations in financial and capital markets, the full-year forecast (net sales of ¥6,100 million, operating profit of ¥630 million) has been left unchanged, and the Q1 progress rate against the operating profit forecast stands at a solid 35.4%.
Growth Strategy
Strengthening earnings power through expanded sales of high value-added products, cost reductions, and new customer acquisition
Actively promoting sales of high value-added products such as the Iris & Facial Recognition Fireproof Safe and the Fingerprint Authentication Key Box with Operation History Function. In Q1 FY2026 (ending December 2026), the Steel Products-Related Business segment achieved net sales of ¥499 million (up 4.2% year on year) and operating profit of ¥137 million (up 6.9% year on year), demonstrating the effect of these initiatives in the results.
Actively developing various new Dental Units and conducting sales activities targeting equipment replacement demand at dental clinics. In Q1 FY2026 (ending December 2026), net sales reached ¥569 million (up 12.4% year on year), recording the highest sales growth rate among all segments. The company continues to maintain product competitiveness through parts procurement collaboration with consolidated subsidiary Bien Air Japan Co., Ltd.
Promoting productivity improvement measures at the Sapporo and Kawajima plants along with new customer development. In Q1 FY2026 (ending December 2026), net sales declined to ¥547 million (down 11.6% year on year), continuing the downward trend, but operating profit rose to ¥38 million (up 41.2% year on year), reflecting the emerging effects of cost reductions. While progress is being made in improving profitability through the establishment of a low-cost production structure, sales recovery remains only partially achieved.
Implementing aggressive cost reduction measures, the company reduced selling, general and administrative expenses to ¥318 million in Q1 FY2026 (ending December 2026), down approximately 4% from ¥331 million in the same period of the previous year. The gross profit margin also improved slightly to 30.6% (from 30.5% in the same period of the previous year). Against the full-year operating profit forecast of ¥630 million (up 5.7% year on year), the company secured a progress rate of 35.4% as of the first quarter.
Last updated: July 17, 2026