Sioma Oy is a limited company based in Savonlinna, registered in 1997. Its taxable income in 2024 was 274 t€ and its income taxes 56 t€. Public buyers bought 18 t€ from it in 2022–2026; the largest buyer is Luonnonvarakeskus (Maa- ja metsätalousministeriön hallinnonala). It has won 2 public contracts in EU procurement notices. Latest Trade Register entry: line of business changed, 13.1.2026.
Taxes
Measured by taxable income, Sioma Oy is in the top 10 % of the industry class electrical installation (1752 companies with taxable income; median 23 t€, 12 times the median).
Taxable income is the profit as calculated for taxation, not revenue. Public data from the Finnish Tax Administration; figures for 2025 are published in November 2026. Revenue, financial ratios and employee numbers are shown once the company has filed its financial statements digitally.
Sales to public buyers
Largest buyers
Trade Register events
- Line of business changed
Public contracts won
- Savonlinnan kaupungin liikuntahallin rakentamisen urakkaSavonlinnan kaupunki7,0 M€
- Teknologiapuisto Nohevan Kuitulaboratorion laajennuksen rakennusurakkaSavonlinnan kaupunki4,6 M€
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