N.H. Rev. Stat. Ann. § 296:33

The treasurer of every railroad corporation and the clerk of every other dividend paying corporation, except banks, until its capital stock is fully paid in and a certificate thereof filed and recorded, shall annually, on or before March first, cause to be filed and recorded, in the office of the clerk of the town or city in which the corporation has its principal place of business a list of the names and places of residence of all its stockholders certified under oath.