What is the Y-tunnus number of Testo-Onni Oy?

Testo-Onni Oy is registered with PRH / YTJ under Y-tunnus 3258773-1.

What is the revenue of Testo-Onni Oy?

Testo-Onni Oy reported revenue of EUR 5K in 2025.

How many employees does Testo-Onni Oy have?

Testo-Onni Oy employs 1 people as of the latest annual report.

Who is the CEO of Testo-Onni Oy?

Arto Sakari Ruokonen is Deputy Member of Testo-Onni Oy, in role since 2026.

Where is Testo-Onni Oy headquartered?

Testo-Onni Oy's registered address is Tähkä 6-C.

Testo-Onni Oy

OYDissolved

Y-tunnus 3258773-1Tähkä 6-CBusiness and other management consultancy activities · NACE 7020Est. 20221 employees

Revenue 2025

EUR 5K

-74% vs 2024

EBITDA margin

91.6%

+216% vs 2024

Equity ratio

-5145.2%

Financial strength

Net profit 2025

EUR 4K

+201% vs 2024

EBITDA — year on yearEUR millions

Key figuresAnnual report 2025

Revenue	EUR 5K	-74%
EBITDA	EUR 5K	+216%
Net profit	EUR 4K	+201%
Total assets	EUR 31	-99%
Equity	EUR -2K	+73%
Employees	1	—

Item	2022	2023	2024	2025
Revenue	48	31	19	5
Staff expenses	−4	−2	−6	−0
EBITDA	4	0	−4	5
Depreciation & amort.	—	−0	−0	−0
EBIT	4	0	−4	5
Net financials	−0	0	−0	−0
Profit before tax	4	0	−4	4
Tax	1	−0	−0	−0
Net profit	3	0	−4	4

Item	2022	2023	2024	2025
Total assets	14	8	6	0
Equity	3	0	−6	−2
Long-term debt	—	1	0	0
Short-term debt	11	9	12	2
Total debt	11	10	12	2

Name	Role	Member since
Current (2)
AS Arto Sakari Ruokonen Deputy Member	Deputy Member	2026
OH Onni Hermanni Ruokonen Chief Executive Officer	Chief Executive Officer	2022
Former (2)
JJ Janne Johannes Ukkonen Deputy Member	Deputy Member	2022 – 2026
VE Veera Elina Bovellan Deputy Member	Deputy Member	2022 – 2022

Person	Role here	Other companies
Arto Sakari Ruokonen	Deputy Member	0 companies
Onni Hermanni Ruokonen	Chief Executive Officer	0 companies
Janne Johannes Ukkonen	Deputy Member	0 companies
Veera Elina Bovellan	Deputy Member	0 companies