We may take two as examples, before bringing this part of our subject to a close.
The first of these letters is to P.Silius Nerva, propraetor of Bithynia, a province recently added to the Empire by Pompeius.

Cicero here says that he is himself closely connected with the partners in the company for collecting the pasture-dues (scriptura) of the province, "not only because that company as a body is my client, but also because I am very intimate with most of the individual partners." Can we doubt that he was himself a shareholder?
He urges Nerva to do all he can for Terentius Hispo, the pro-magister of the company, and to try to secure for him the means of making all the necessary arrangements with the taxed communities--relying, we are glad to find, on the tact and kindness of the governor.[124] The second letter, to his own son-in-law, Furius Crassipes, quaestor of Bithynia, shall be quoted here in full from Mr.Shuckburgh's translation:[125] "Though in a personal interview I recommended as earnestly as I could the publicani of Bithynia, and though I gathered that by your own inclination no less than from my recommendation, you were anxious to promote the advantage of that company in every way in your power, I have not hesitated to write you this, since those interested thought it of great importance that I should inform you what my feeling towards them was.

I wish you to believe that, while I have ever had the greatest pleasure in doing all I can for the order of publicani generally, yet this particular company of Bithynia has my special good wishes.

Owing to the rank and birth of its members, this company constitutes a very important part of the state: for it is made up of members of the other companies: and it so happens that a very large number of its members are extremely intimate with me, and especially the man who is at present at the head of the business, P.Rupilius, its pro-magister.

Such being the case, I beg you with more than common earnestness to protect Cn.