Question 1

What is the Y-tunnus number of Tammer-Data Oy?

Accepted Answer

Tammer-Data Oy is registered with PRH / YTJ under Y-tunnus 2206142-9.

Question 2

What is the revenue of Tammer-Data Oy?

Accepted Answer

Tammer-Data Oy reported revenue of EUR 1,4M in 2025.

Question 3

How many employees does Tammer-Data Oy have?

Accepted Answer

Tammer-Data Oy employs 4 people as of the latest annual report.

Question 4

Who is the CEO of Tammer-Data Oy?

Accepted Answer

Sami Petteri Nissinen is Deputy Chief Executive Officer of Tammer-Data Oy, in role since 2013.

Question 5

Who is the chairman of Tammer-Data Oy?

Accepted Answer

Leo Juhani Ahonen chairs the board of Tammer-Data Oy, in role since 2018.

Question 6

Where is Tammer-Data Oy headquartered?

Accepted Answer

Tammer-Data Oy's registered address is Sammonkatu 35.

Person	Role here	Other companies
Sami Petteri Nissinen	Deputy Chief Executive Officer	0 companies
Teuvo Kalevi Niinimäki	Deputy Member	0 companies
Sami Antero Niinimäki	Chief Executive Officer	0 companies
Leo Juhani Ahonen	Board of Directors	0 companies

Tammer-Data Oy

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