N.H. Rev. Stat. Ann. § 564-F:18-1805
(a) A judicial proceeding against a foundation official for breach of duty may be commenced only within the earliest of:
(2) Except as provided in subsection (a)(3), 3 years after the earliest of:
(A) The foundation official's removal, resignation, or death;
(B) The termination of the beneficiary's interest;
(C) The foundation's dissolution or
(3) If the act or omission was not discovered and could not reasonably have been discovered at the time of the act or omission, one year after the earlier of:
(A) The discovery of the act or omission; or
(B) In the exercise of reasonable diligence, the date on which the act or omission should have been discovered.
Source. 2017, 257:47, eff. Oct. 1, 2017. 2018, 210:17, eff. June 8, 2018.