Exhibit 4(a) INVESTMENT MANAGEMENT AGREEMENT AGREEMENT, dated September 29, 2006, between Master Government Securities Trust (the "Trust"), a Delaware statutory trust, and BlackRock Advisors, LLC (the "Advisor"), a Delaware limited liability company....Investment Management Agreement • July 30th, 2007 • Master Government Securities LLC • New York
Exhibit 4(b) SUB-INVESTMENT ADVISORY AGREEMENT AGREEMENT dated September 29, 2006, between BlackRock Advisors, LLC, a Delaware limited liability company (the "Advisor"), and BlackRock Institutional Management Corporation, a Delaware corporation (the...Sub-Investment Advisory Agreement • July 30th, 2007 • Master Government Securities LLC • New York
LIMITED LIABILITY COMPANY AGREEMENT OF MASTER GOVERNMENT SECURITIES LLCLimited Liability Company Agreement • July 30th, 2007 • Master Government Securities LLC • Delaware
