What is the Y-tunnus number of EY Advisory Oy?

EY Advisory Oy is registered with PRH / YTJ under Y-tunnus 3283705-9.

What is the revenue of EY Advisory Oy?

EY Advisory Oy reported revenue of EUR 132,5M in 2025.

EY Advisory Oy employs 580 people as of the latest annual report.

Mikko Aarne Äijälä is Chief Executive Officer of EY Advisory Oy, in role since 2022.

Toni Johannes Karinpoika Halonen chairs the board of EY Advisory Oy, in role since 2026.

EY Advisory Oy's registered address is Korkeavuorenkatu 3234.

OYActive

Y-tunnus 3283705-9Korkeavuorenkatu 32-34, 00130 HelsinkiBusiness and other management consultancy activities · NACE 7020Est. 2022580 employees

Actively employed in the business

Name	Role	Member since
Current (1)
MA Mikko Aarne Äijälä Chief Executive Officer	Chief Executive Officer	2022
Former (3)
KE Kalle-Pekka Ensio Kotka Audit	Audit	2022 – 2025
JP Jussi Petteri Savio Deputy auditor	Deputy auditor	2022 – 2023
EA Eila Anneli Grönlund Deputy Member	Deputy Member	2022 – 2022

Non-executive oversight

Name	Role	Member since
Current (4)
TJ Terhi Johanna Mäkinen	Board of Directors	2022
TJ Toni Johannes Karinpoika Halonen	Chairperson	2026
AL Annika Lisa Maria Gyllström	Board of Directors	2026
MS Mikko Simo Sakari Järventausta	Board of Directors	2022
Former (2)
JP Jani Petri Ylä-Autio	Board of Directors	2022 – 2022
HE Heikki Esa Petteri Ilkka	Chairperson	2022 – 2026

As of last annual report

Shareholder	Type	Ownership	Votes	Since
Ernst & Young Oy	Company	100%	100%	2025

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