Insurance-focused D’Amato & Lynch, a Manhattan firm whose head count has shrunk over the last two years, has been sued by its former landlord for more than $1.7 million after the firm moved to smaller office space this year.

WFP Tower B Co. LP, the landlord of downtown office space formerly occupied by D’Amato & Lynch, sued the firm in Manhattan Supreme Court on Thursday, claiming it was owed nearly $1 million in rent that was due before the lease was terminated last year and another $757,000 incurred before the firm actually moved out.