Mk Seiko

5906.TTSE STANDARDMetal Products

Key numbers · FY ended 2026-03

Revenue¥29.8bn+5.4% YoY Operating income¥2.7bn+36.6% YoY Net income (owners)¥2.4bn+76.4% YoY Total assets¥28.3bn+7.8% YoY EPS (basic)¥167.49+84.5% YoY

Full financial history and reports →

Stock price5906 · View chart ↗

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Latest filings

Fri, Oct 31 · JST1 filing

14:07MATERIALMk Seiko · Change in parent company or specified subsidiary

Mon, May 26 · JST1 filing

15:465% STAKEMk Seiko · The Hachijuni Bank, Ltd. + 2 joint holders · 6.01% → 4.45%−1.56pp

Fri, Apr 4 · JST1 filing

16:575% STAKEMk Seiko · Maruyama Haruyo + 1 joint holder · 9.70% → 5.30%−4.40pp

All filings →

Major holders (5%+) · 1

Holder	Stake	Change	Filed
Maruyama Haruyo	5.30%	—	2025-04-04

Each holder's own ratio from its most recent large-shareholding report.