Number of Employees in Arduino

I have to write a report for University about Arduino. I would like to know how many employees work there and who is responsable for the BI/BA (extraction of data and information from community)

Thanks a lot!!

Which Arduino ?
Arduino LCC ? --> USA
Arduino AG ? --> Switzerland
BCMI labs SA ? --> Switzerland
Arduino ? ? ?

Arduino is not a single company, it's a nebula.

You can interact sites like "www.moneyhouse.ch" for Switzerland, for the USA it must exist but I am in Europe I do not know.

Additionally when it comes to development type work there are a lot of people that don't "officially" work for Arduino.

Your question is something akin to "how long is a piece of string"
There will be a significant difference between OFFICIAL employees and parts time / unpaid / and other forms of non registered workforce.