X0201 4 2003-08-12 1 0001080310 EATON VANCE INSTITUTIONAL SENIOR FLOATING RATE FUND EIFRX 0001225360 BOTTHOF MICHAEL B THE EATON VANCE BUILDING 255 STATE STREET BOSTON MA 02109 1 0 0 1 Insider and Officer By: Paul M. O'Neil, Attorney in Fact 2003-08-14