What is the Y-tunnus number of Welle Oy?

Welle Oy is registered with PRH / YTJ under Y-tunnus 0786815-2.

What is the revenue of Welle Oy?

Welle Oy reported revenue of 296,0 t. € in 2025.

Jekaterina Trelina is the CEO of Welle Oy, in role since 2026.

Welle Oy's registered address is Huvilakatu 21-A5.

OYActive

Y-tunnus 0786815-2Huvilakatu 21A-215, 00150 HelsinkiEngineering activities and related technical consultancy· NACE 7112Est. 1989 · 36 years old— employees

Actively employed in the business

Name	Role	Member since
Current (2)
JT Jekaterina Trelina Chief Executive Officer	Chief Executive Officer	2026
NE Nicole Emilia Trelina Deputy Member	Deputy Member	2025

Former (5)


TT Tom Thure Antero Sandell Audit	Audit	2011 – 2026
MA Maire Anneli Saastamoinen Chief Executive Officer	Chief Executive Officer	2023 – 2025
PJ Pauli Juhani Aaltonen Deputy auditor	Deputy auditor

Non-executive oversight

Name	Role	Member since
Current (1)
JT Jekaterina Trelina Board of Directors	Board of Directors	2025

Former (1)


MA Maire Anneli Saastamoinen Board of Directors	Board of Directors	2011 – 2025

As of last annual report

No shareholder data available.

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