Business profile

Castellum Oy

Castellum Oy's registered office is Helsingfors. It is a limited company. The company was established on 2019-04-02. It operates in the industry of rental and operating of own or leased non-residential real estate. In its latest retained statement for 2024-12-31, revenue was €1,502,578 and operating profit was €84,512.

Claim profile Contact details

Business ID 2987458-8ValidUnclaimed company profile

Trusted core data

Public company details from the trade register.

Business ID: 2987458-8
Sector: Rental and operating of own or leased non-residential real estate
Municipality: Helsingfors
Company form: Limited company
Registration date: 2019-04-02
Business ID registration date: 2019-03-05
Business status: Valid
Profile ownership: Unclaimed company profile

Contact and location summary

Visiting address: Verkkosaarenkatu 5, 00580, Helsingfors

Phone: +358403505367Source observation

Website: https://castellum.fiSource observation

Linkedin profile: https://www.linkedin.com/company/castellumfinlandSource: company website

Instagram profile: https://www.instagram.com/castellumfinlandSource: company website

Facebook profile: https://www.facebook.com/castellumfinlandSource: company website

People and decision-makers

Stadigh Johan HenrikToimitusjohtaja

Email: Email available for logged-in usersSource: company website

Phone: Phone available for logged-in usersSource: company website

Elmeri NordenswanDecision-maker

Email: Email available for logged-in usersSource: company website

Phone: Phone available for logged-in usersSource: company website

Sanna HulkkoDecision-maker

Email: Email available for logged-in usersSource: company website

Phone: Phone available for logged-in usersSource: company website

Lauri MailaDirector

Email: Email available for logged-in usersSource: company website

Phone: Phone available for logged-in usersSource: company website

Annmari KallioinenDecision-maker

Email: Email available for logged-in usersSource: company website

Phone: Phone available for logged-in usersSource: company website

Niko RaittinenDecision-maker

Email: Email available for logged-in usersSource: company website

Phone: Phone available for logged-in usersSource: company website

Dinah Sjöholmasiakkuuspäällikkö

Email: Email available for logged-in usersSource: company website

Phone: Phone available for logged-in usersSource: company website

Katja Rummukainenasiakkuuspäällikkö

Email: Email available for logged-in usersSource: company website

Phone: Phone available for logged-in usersSource: company website

Riikka HenttonenDecision-maker

Email: Email available for logged-in usersSource: company website

Phone: Phone available for logged-in usersSource: company website

Anna VuorinenDecision-maker

Email: Email available for logged-in usersSource: company website

Phone: Phone available for logged-in usersSource: company website

Juhana JokinenDecision-maker

Email: Email available for logged-in usersSource: company website

Phone: Phone available for logged-in usersSource: company website

Direct contact details available for logged-in usersSome person-level contact details are shown only to registered users. The data is based on public sources, such as the company's own website.Log in to view decision-maker contact details

About Castellum Oy

Financial position and key figures for the company.

Castellum Oy's location municipality is Helsingfors. It is a limited company. The company was established on 2019-04-02. It operates in the industry of rental and operating of own or leased non-residential real estate. In its latest retained statement for 2024-12-31, revenue was €1,502,578 and operating profit was €84,512. The latest retained financial statement for 2024-12-31 shows revenue of €1,502,578 and profit for the financial year of €63,665. Based on the latest retained statement, revenue growth was +7.4%, operating margin was +5.6%, and equity ratio was +33.2%.

Financial highlights

Key figures from the latest financial period.

Latest financial period

2024-12-31

Imported periods0

PRH parsed0

Profile sourceEnriched source observation

Derived indicators

Revenue growth7.4%

Operating margin5.6%

Equity ratio33.2%

Revenue€1,502,578+€103,856 (+7.4%) vs previous periodPrevious: €1,398,722

Operating profit (loss)€84,512+€29,674 (+54.1%) vs previous periodPrevious: €54,838

Profit (loss) for the financial year€63,665+€25,031 (+64.8%) vs previous periodPrevious: €38,634

Assets€1,129,654+€125,872 (+12.5%) vs previous periodPrevious: €1,003,782

Balance-sheet contextLatest financial period

Profit before taxes€86,788Previous: €54,727

Employees6Previous: 6

Revenue trend4 periods

€532,708

2021-12-31

€1,187,356

2022-12-31

€1,398,722

2023-12-31

€1,502,578

2024-12-31

Operating profit (loss) trend4 periods

€20,489

2021-12-31

€46,515

2022-12-31

€54,838

2023-12-31

€84,512

2024-12-31

Profit (loss) for the financial year trend4 periods

€11,536

2021-12-31

-€5,088

2022-12-31

€38,634

2023-12-31

€63,665

2024-12-31

Assets trend4 periods

€655,166

2021-12-31

€932,068

2022-12-31

€1,003,782

2023-12-31

€1,129,654

2024-12-31

Financial ratios

Financial ratios based on financial statement data. Source: Rikastettu lähdehavainto.

Equity ratioSatisfactory

42/100 · Improving

33.2 %2023-12-31: 31.0 %

Current ratioNot assessable

0/100 · Trend unavailable

Not available2023-12-31: Ei saatavilla

Operating profit marginSatisfactory

64/100 · Improving

5.6 %2023-12-31: 3.9 %

Ratio history

Ratio	2021-12-31	2022-12-31	2023-12-31	2024-12-31
Equity ratio	42.4 %	29.8 %	31.0 %	33.2 %
Current ratio	-	-	-	-
Operating profit margin	3.9 %	3.9 %	3.9 %	5.6 %

Registry status and identifiers

Current registry information and identifiers based on YTJ data.

YTJ statusValid

Trade RegisterRegistered

Business ID2987458-8

VAT IDFI29874588

EU IDFIFPRO.2987458-8

MunicipalityHelsingfors

Current registered entries

2019-03-05VAT-liable for business activity in Tax Administration (VAT Register)

2019-03-05Registered in Tax Administration (Prepayment Register)

2019-04-02Registered in Patent and Registration Office (Trade Register)

2019-04-04Registered in Tax Administration (Tax Administration)

2019-05-01Registered in Tax Administration (Employer Register)

Responsible people

Public role relationships materialized from source observations.

Direct contact details available for logged-in users.

Stadigh Johan HenrikToimitusjohtajaSources: 5 · Confidence: 78%

Strömbäck Hans Martin ChristofferVarajäsenSources: 2 · Confidence: 78%

Stadigh Johan HenrikVarsinainen jäsenSources: 2 · Confidence: 78%

Aarne MartamoPäävastuullinen tilintarkastajaSources: 1 · Confidence: 76%

Risk certificate

An open-data based company stability and risk signal.

BUSINESS.fi

BUSINESS.fi Luottoluokitus

Profile-specific risk signal based on open data

Automatic gradeNot a credit decision

A3

GoodCastellum Oy

Grade unchangedA3 · new analysis 2026-10-18

Model score71/100

Assessment confidenceMedium

Evidence qualityUsable financial evidenceFinancial data included

Financial trajectoryFinancial development is mostly stable or mixed.

4 comparable periods

RevenueImproving

ProfitabilityStable

SolvencyStable

LiquidityNot enough history

Peer comparisonSame industryDescriptive comparison – does not change the model score.

872 peers

Solvency40%

Below 60% of peers

Profitability48%

Close to the peer-group midpoint

Revenue growth79%

Better than 79% of peers

Supporting factors

Active registered status
A newer financial statement filing has been reported
Lower industry distress context

Risk factors to note

No material separate warning signals.

Rating historyAutomatic assessment developmentChanges are derived from evidence differences between persisted automatic assessments.

2 assessments

A3

2026-10-1871/100 · v0.15

A3 → A3

Evidence quality: Strong financial evidence → Usable financial evidence.

A3

2026-10-0871/100 · v0.14

Oldest retained automatic assessment in this comparison

Automatic model gradeA3

Automatic model snapshot2026-10-18

Automatic model versionopen-risk-grade-v0.15

Financial data included

The grade can use open digital financial statement data together with registry signals.

Verify assessment

Risk context

When sufficient source-backed financial metrics are not available for a Tier 1 assessment, BUSINESS.fi shows registry, industry, and regional context.

Industry risklow

77/100

Industry context is low based on normalized open statistical inputs.

Age and continuityHyvä

60/100

The company has about 7 years of registry continuity.

Registry and status signalsSeurattava

69/100

Registry history, filing recency, and active register markings are still limited or mixed.

Events & news

Verified events and sourced external company news in one timeline.

Risk grade updatedRisk gradeEvidence verified

8 Oct 2026 · BUSINESS.fi / Opterom LuottoluokitusAutomatic grade A3.

Registry timeline

Trade register notifications shown on a timeline.

15 register eventsLatest event: 2025-12-19

Profile source and ownership

Profile based on public registry data

BUSINESS.fi has created this profile from public company information. Source data updated 2025-12-31.

This company profile has not been claimed yet

Castellum Oy shows public core facts. A company representative can claim the profile, update public information, and access owner tools.