Since 1966, Tekla has grown from a small Finnish company into an international corporation. Tekla headquarters are located in Espoo, Finland.

The most important personnel facts:
- Tekla Group employes about 500 persons
- About 300 persons work at the headquarters in Finland
- About 200 people are located in area offices in 14 countries
- The average age of a Tekla employee is 38,3 years
- 63 % of the personnel have a graduate-level academic degree or have studied at a university
- 28 % of Tekla employees are female, 72% are male