What is the Y-tunnus number of First Whistle Oy?

First Whistle Oy is registered with PRH / YTJ under Y-tunnus 2248102-8.

What is the revenue of First Whistle Oy?

First Whistle Oy reported revenue of EUR 1,2M in 2025.

Milla Erika Heiskanen is Chief Executive Officer of First Whistle Oy, in role since 2023.

Anja Kaarina Kajander chairs the board of First Whistle Oy, in role since 2018.

First Whistle Oy's registered address is Annankatu 27-A.

OYActive

Y-tunnus 2248102-8Annankatu 27A, 00100 HelsinkiBusiness and other management consultancy activities · NACE 7020Est. 2009— employeesfi.falcony.io

Actively employed in the business

Name	Role	Member since
Current (2)
OA Okko Arimo Kouvalainen Deputy Member	Deputy Member	2026
MA Matias Arttu Johannes Vesterinen Chief Executive Officer	Chief Executive Officer	2026
Former (4)
ME Milla Erika Heiskanen Chief Executive Officer	Chief Executive Officer	2023 – 2026
JA Jari Antero Salo Deputy Chief Executive Officer	Deputy Chief Executive Officer	2009 – 2026
MI Mika Ilmari Puuska Audit	Audit	2011 – 2023
RH Rea Harriet Gunilla Klingberg Chief Executive Officer	Chief Executive Officer	2019 – 2023

Non-executive oversight

As of last annual report

No shareholder data available.

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