This is the 17939th most frequent Russian word.
учредителями
"Founders" or "establishers."
The word 'учредителями' is the instrumental plural form of 'учредитель', meaning 'founder' or 'establisher'. In this sentence, it highlights the role of the people as creators or initiators of the company.
Они являются учредителями новой компании.
They are the founders of the new company.
The word 'учредителями' here is used as the object of preposition 'с', indicating the individuals responsible for establishing the referenced project.
Мы встретились с учредителями этого проекта.
We met with the founders of this project.
The word 'учредителями' denotes the individuals responsible for initiating the exhibition, emphasizing their active role in its creation.