October 30, 2015

In an effort to better serve our investors, Green Century has selected Atlantic Shareholder Services as the Transfer Agent and shareholder services provider for the Green Century Funds effective November 23, 2015.

Prior to November 23, 2015, please mail all correspondence regarding new account openings and other shareholder correspondence to:

Green Century Funds, P.O. Box 6110, Indianapolis, IN 46206-6110

Beginning November 23, 2015, please mail all correspondence regarding new account openings and other shareholder correspondence to:

Regular Mail:

Green Century Funds
P.O. Box 588
Portland, ME 04112

Overnight Mail:

Green Century Funds
Attn: Transfer Agent, Atlantic Fund Services
3 Canal Plaza, Ground Floor
Portland, ME 04101

Effective November 23, 2015, the Custodian for IRA accounts will be MUFG Union Bank, N.A. The change in Custodian will not affect your account opening.

If you have any questions, please call us at 1-800-93-GREEN (1-800-934-7336), Monday through Friday, 9:00 am – 6:00 pm Eastern Time.

Thank you for your interest in the environmentally responsible and fossil fuel free Green Century Funds.