American Surgical Assistants — The portfolio company of Great Point Partners named Tom Kirk chief executive officer. Kirk, who stepped in on June 3, succeeds Zak Elgamal, American Surgical’s co-founder and president, who will remain on the company’s board of directors. Kirk was previously president and chief executive of prosthetic maker Hanger Inc.

B.C. Ziegler & Co. — The Chicago investment bank hired Sarkis Garabedian for its western region banking team. Garabedian joins from Piper Jaffray & Co., where he was a vice president in the healthcare group. Ziegler specializes in the senior living sector.

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