BLACKROCK ECOSOLUTIONS INVESTMENT TRUST Shares of Beneficial Interest ($0.001 par value) UNDERWRITING AGREEMENTEcosolutions Investment Trust • September 25th, 2007 • BlackRock EcoSolutions Investment Trust • New York
The undersigned, BlackRock EcoSolutions Investment Trust, a Delaware statutory trust (the “Fund”), BlackRock Advisors, LLC, a Delaware limited liability company (the “Adviser”), BlackRock Investment Management, LLC, a Delaware limited liability company (“BIM”), and BlackRock Investment Management International Limited, a limited company organized under the laws of England and Wales (“BIMI,” and together with BIM, the “Sub-Advisers”, and the Sub-Advisers together with the Adviser, the “Advisers”), address you as underwriters and as the representatives (the “Representatives”) of each of the several underwriters named in Schedule I hereto (the “Underwriters”). The Fund proposes to sell to the Underwriters [ ] shares of its common shares of beneficial interest, par value $0.001 per share (the “Common Shares”) (said shares to be issued and sold by the Fund being hereinafter called the “Underwritten Securities”). The Fund also proposes to grant to the Underwriters an option to purchase up to
