Cleveland-based law firm Ulmer & Berne has signed a lease to occupy 18,000 square feet in the Citigroup Center for a larger Chicago office.

The new office at 500 W. Madison St. signals that the firm plans to expand from its current roster of eight attorneys. The new space can accommodate 30 lawyers plus staff. In September, the firm grew from two lawyers to eight with the addition of litigators from Reed Smith and Levenfeld Pearlstein.

Ulmer & Berne is the third Cleveland firm to enter or move to new offices in the Chicago market in recent months. Baker & Hostetler opened a new office at 191 N. Wacker Drive in November with four attorneys. In September McDonald Hopkins leased 24,000 square feet at 300 N. LaSalle St.