<PAGE>
Loomis Sayles
Funds
Equity Funds
Supplement dated December April 4, 2000 to
Loomis Sayles Funds Equity Funds Prospectus
Dated February 1, 2000
Effective immediately, Daniel J. Thelen, Vice President of Loomis Sayles,
serves as co-portfolio manager of the Loomis Sayles Small Cap Value Fund. Prior
to joining Loomis Sayles in 1996, Mr. Thelen was a Manager at
PricewaterhouseCoopers LLP since 1990. He manages the Fund with Joseph Gatz and
Dawn Alston Paige, Vice Presidents of the Trust and of Loomis Sayles, who have
managed the Fund since 2000.