NEW YORK, Jan 21 (Reuters) - Proxy advisory firm

Institutional Shareholder Services on Tuesday named Andrew Borek

as the group's new head of special situations research

succeeding Cristiano Guerra.

Borek has worked with Guerra since 2017 on writing

recommendations on hot button issues like corporate mergers and

board elections that often shape the outcome of corporate

elections. He is a "well-known and respected as a subject matter

expert in both shareholder activism and a wide range of

corporate governance topics," ISS wrote to clients. Reuters

obtained a copy of the letter.