CastleBook OÜ

Active Registry code 16189086 OÜ Registered 22 Mar 2021
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CastleBook OÜ is a OÜ based in , registry code 16189086, status: active. Main activity: Web search portal activities. According to EMTA, turnover for Q3 2026 was €-14 with employees.

Turnover
-14 €
↓ 240.0% vs Q2 2026
State taxes
—
Labour taxes
—
Employees
—

Q3 2026 · data from the Tax and Customs Board (EMTA)

Position in the industry Computing infrastructure, data processing, hosting and other information service activities · EMTAK 63

  • Revenue · 2025 175 €
    industry median 5 110 € · companies in the industry: 2 187

Taxes and turnover

Q4 2023 – Q3 2026
Turnover, € Q3 2026: -14 € · −240.0% vs Q2 2026 · industry median 17 575 € · above 2% of the industry
-5 00005 00010 00015 00020 000Q4 2023 Company: 0 € Industry median: 18 245 €Q4·23Q1 2024 Company: 0 € Industry median: 19 996 €Q2 2024 Company: 0 € Industry median: 16 991 €Q2·24Q3 2024 Company: 0 € Industry median: 16 000 €Q4 2024 Company: 77 € Industry median: 17 517 €Q4·24Q1 2025 Company: 835 € Industry median: 17 803 €Q2 2025 Company: 0 € Industry median: 16 890 €Q2·25Q3 2025 Company: 0 € Industry median: 18 033 €Q4 2025 Company: 0 € Industry median: 18 004 €Q4·25Q1 2026 Company: 355 € Industry median: 18 420 €Q2 2026 Company: 10 € Industry median: 17 757 €Q2·26Q3 2026 Company: -14 € Industry median: 17 575 €Q3·26-5 00005 00010 00015 00020 000Q4 2024 Company: 77 € Industry median: 17 517 €Q1 2025 Company: 835 € Industry median: 17 803 €Q1·25Q2 2025 Company: 0 € Industry median: 16 890 €Q3 2025 Company: 0 € Industry median: 18 033 €Q3·25Q4 2025 Company: 0 € Industry median: 18 004 €Q1 2026 Company: 355 € Industry median: 18 420 €Q1·26Q2 2026 Company: 10 € Industry median: 17 757 €Q3 2026 Company: -14 € Industry median: 17 575 €Q3·26
  • Company
  • Industry median

Industry: Computing infrastructure, data processing, hosting and other information service activities (the EMTAK division of the main activity). Median: half of the industry is above, half below.

Figures by quarter
Quarter Turnover, € State taxes, € Labour taxes, € Employees
Q3 2026 -14 — — —
Q2 2026 10 — — —
Q1 2026 355 — — —
Q4 2025 — — — —
Q3 2025 — — — —
Q2 2025 — — — —
Q1 2025 835 — — —
Q4 2024 77 — — —
Q3 2024 — — — —
Q2 2024 — — — —
Q1 2024 — — — —
Q4 2023 — — — —
Q3 2023 — — — —
Q2 2023 — — — —
Q1 2023 — — — —
Q4 2022 — — — —
Q3 2022 — — — —
Q2 2022 — — — —
Q1 2022 — — — —

Financials by year

2021 – 2025
Revenue, € 2025: 175 € · industry median 5 110 € · above 36% of the industry
02 0004 0006 0002021 Company: 0 € Industry median: 4 648 €20212022 Company: 0 € Industry median: 4 446 €20222023 Company: 0 € Industry median: 4 503 €20232024 Company: 0 € Industry median: 4 515 €20242025 Company: 175 € Industry median: 5 110 €202502 0004 0006 0002021 Company: 0 € Industry median: 4 648 €20212022 Company: 0 € Industry median: 4 446 €2023 Company: 0 € Industry median: 4 503 €20232024 Company: 0 € Industry median: 4 515 €2025 Company: 175 € Industry median: 5 110 €2025
  • Company
  • Industry median

Industry: Computing infrastructure, data processing, hosting and other information service activities (the EMTAK division of the main activity). Median: half of the industry is above, half below.

Net profit, € 2025: -598 € · +59.7% vs 2024 · industry median 0 € · above 25% of the industry
-1 500-1 000-50005002021 Company: 0 € Industry median: 1 €20212022 Company: 0 € Industry median: 0 €20222023 Company: -506 € Industry median: 0 €20232024 Company: -1 484 € Industry median: 0 €20242025 Company: -598 € Industry median: 0 €2025-1 500-1 000-50005002021 Company: 0 € Industry median: 1 €20212022 Company: 0 € Industry median: 0 €2023 Company: -506 € Industry median: 0 €20232024 Company: -1 484 € Industry median: 0 €2025 Company: -598 € Industry median: 0 €2025
  • Company
  • Industry median

Industry: Computing infrastructure, data processing, hosting and other information service activities (the EMTAK division of the main activity). Median: half of the industry is above, half below.

Assets, € thousand 2025: 104 933 € · +0.7% vs 2024
02550751001252021 Company: 2 500 €20212022 Company: 2 500 €20222023 Company: 102 202 €20232024 Company: 104 180 €20242025 Company: 104 933 €202502550751001252021 Company: 2 500 €20212022 Company: 2 500 €2023 Company: 102 202 €20232024 Company: 104 180 €2025 Company: 104 933 €2025
Equity, € 2025: 1 902 € · −23.9% vs 2024
05001 0001 5002 0002 5002021 Company: 2 500 €20212022 Company: 2 500 €20222023 Company: 1 994 €20232024 Company: 2 500 €20242025 Company: 1 902 €202505001 0001 5002 0002 5002021 Company: 2 500 €20212022 Company: 2 500 €2023 Company: 1 994 €20232024 Company: 2 500 €2025 Company: 1 902 €2025
Employees 2025: 0 · industry median 1 · above 2% of the industry
0.00.20.40.60.81.02021 Company: 0 Industry median: 120212022 Company: 0 Industry median: 120222023 Company: 0 Industry median: 120232024 Company: 0 Industry median: 120242025 Company: 0 Industry median: 120250.00.20.40.60.81.02021 Company: 0 Industry median: 120212022 Company: 0 Industry median: 12023 Company: 0 Industry median: 120232024 Company: 0 Industry median: 12025 Company: 0 Industry median: 12025
  • Company
  • Industry median

Industry: Computing infrastructure, data processing, hosting and other information service activities (the EMTAK division of the main activity). Median: half of the industry is above, half below.

Financials by year
Year Revenue, € Net profit, € Labour costs, € Assets, € Equity, € Employees
2025 175 -598 0 104 933 1 902 0
2024 0 -1 484 0 104 180 2 500 0
2023 0 -506 0 102 202 1 994 0
2022 0 0 0 2 500 2 500 0
2021 0 0 0 2 500 2 500 0

Figures from the company’s own (non-consolidated) balance sheet and income statement. A loss is shown with a minus sign.

Financial ratios for 2025

Net profit margin
-341.7 %
Net profit / revenue
Return on equity (ROE)
-31.4 %
Net profit / equity
Return on assets (ROA)
-0.6 %
Net profit / assets
Equity ratio
1.8 %
Equity / assets
Debt ratio
98.2 %
Liabilities / assets
Current ratio
37.56
Current assets / current liabilities

Annual reports

PDFs from e-Äriregister
Annual reports
Year Period Filed Report Documents
2025 1 Jan 2025 – 31 Dec 2025 29 May 2026 Company’s own e-Äriregister
2024 1 Jan 2024 – 31 Dec 2024 3 Jun 2025 Company’s own e-Äriregister
2023 1 Jan 2023 – 31 Dec 2023 20 Jun 2024 Company’s own e-Äriregister
2022 1 Jan 2022 – 31 Dec 2022 7 Jun 2023 Company’s own e-Äriregister
2021 22 Mar 2021 – 31 Dec 2021 27 Jun 2022 Company’s own e-Äriregister

Board

Right of representation

Any member of the management board may represent the private limited company in all transactions.

Owners

Beneficial owners

  • Kerli Tamm
    Indirect ownership · since 22 Mar 2021
  • Otto Vaarmann
    Member of a senior management body (management or supervisory board) · since 22 Mar 2021
  • Priit Põder
    Member of a senior management body (management or supervisory board) · since 22 Mar 2021
  • Raido Kaju
    Member of a senior management body (management or supervisory board) · since 22 Mar 2021

Founders and other persons

shared board members, owners or beneficial owners

Activities (EMTAK)

  • 63911Web search portal activities Main
Rulings
Number, date Title Deadline State Document
Ä 50169605 / 6
21 Oct 2026
Entry made by the register on its own initiative Signed
21 Oct 2026
PDF
Ä 50169605 / M2
5 Oct 2026
Procedural ruling 19 Oct 2026 In force
5 Oct 2026
PDF
Ä 50169605 / 5
22 Sep 2026
Amendment entry In force
22 Sep 2026
PDF
Ä 50169605 / M1
21 Sep 2026
Ruling to eliminate deficiencies 21 Oct 2026 Deficiencies eliminated
22 Sep 2026
PDF
Ä 50169605 / 4
21 Jun 2025
Amendment entry In force
21 Jun 2025
PDF
Ä 50169605 / 3
18 Dec 2023
Amendment entry In force
18 Dec 2023
PDF
Ä 50169605 / 2
2 Sep 2023
Amendment entry In force
2 Sep 2023
PDF
Ä 50169605
22 Mar 2021
First entry In force
22 Mar 2021
PDF

Sources: e-Äriregister and EMTA. Data updated 31 Oct 2026. Open at the source ↗ · Report an error in the data