N.D. Cent. Code § 26.1-12-25
If the directors of any mutual insurance company neglect or omit for the space of six months to lay, or to use reasonable diligence to collect, any assessment which the board of directors is required to make, they are liable personally for all debts and claims then outstanding against the company or that may accrue until the assessment is laid and put in process of collection. If the treasurer of the company unreasonably neglects to collect an assessment made by order of the board of directors and to apply the assessment to the payment of the claims for which it was made, the treasurer is liable personally to the parties having the claims for the amount of the assessment. The treasurer may repay oneself out of any money afterwards received for the company on account of the assessment.
N.D.C.C. § 26.1-12-25