Latest results FY2026 · Prices updated Oct 30, 2026
HQ: Osaka, OsakaFounded 19441,038 employeesWebsite
A chemical manufacturer specializing in superabsorbent polymers, functional chemicals, and industrial gases. It has a strong position in superabsorbent polymers for disposable diapers and operates production facilities in Japan and overseas.
Business segments (share of revenue)
Latest results
FY2026
vs. same period a year earlier
| Segment | Share | Revenue | Operating profit | Margin |
|---|---|---|---|---|
| Superabsorbent Resins | 78% | ¥116.1B | ¥11.5B | 9.9% |
| Functional Materials | 22% | ¥31.9B | ¥2.9B | 9.1% |
| Other Businesses | 0% | ¥293M | ¥29M | 9.9% |



Close (Oct 30, 2026)
¥1,458+55.1% (1Y)
Sumitomo Seika +55.1% over 1Y, 30.2pt above the industry average (59 companies, +24.9%).
Reference chart of daily closing prices, not real-time quotes (split-adjusted; weekly closes before the last year). Updated Oct 30, 2026.
| Period | Revenue | Op. profit | Net income | Total assets | Revenue YoY |
|---|---|---|---|---|---|
| 2026FY | ¥148.4B | ¥14.5B | ¥7.7B | ¥152.7B | +0.5% |
| 2025FY | ¥147.6B | ¥10.7B | — | — | — |
Sources: annual securities reports, earnings releases and other public disclosures
Data may contain input errors. For reference only; we accept no responsibility for its accuracy.