0001179110-13-006468.txt : 20130404 0001179110-13-006468.hdr.sgml : 20130404 20130404174014 ACCESSION NUMBER: 0001179110-13-006468 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 2 CONFORMED PERIOD OF REPORT: 20130404 FILED AS OF DATE: 20130404 DATE AS OF CHANGE: 20130404 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Li Allen CENTRAL INDEX KEY: 0001509318 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 811-22437 FILM NUMBER: 13743935 MAIL ADDRESS: STREET 1: 100 WILSHIRE BOULEVARD, SUITE 500 CITY: SANTA MONICA STATE: CA ZIP: 90401 ISSUER: COMPANY DATA: COMPANY CONFORMED NAME: Guggenheim Build America Bonds Managed Duration Trust CENTRAL INDEX KEY: 0001495825 IRS NUMBER: 000000000 STATE OF INCORPORATION: DE BUSINESS ADDRESS: STREET 1: 2455 CORPORATE WEST DRIVE CITY: LISLE STATE: IL ZIP: 60532 BUSINESS PHONE: 630-505-3700 MAIL ADDRESS: STREET 1: 2455 CORPORATE WEST DRIVE CITY: LISLE STATE: IL ZIP: 60532 4 1 edgar.xml FORM 4 - X0306 4 2013-04-04 0 0001495825 Guggenheim Build America Bonds Managed Duration Trust GBAB 0001509318 Li Allen GUGGENHEIM PARTNERS, LLC 100 WILSHIRE BOULEVARD, SUITE 500 SANTA MONICA CA 90401 0 0 0 1 Director of the Sub-Adviser Common Stock 2013-04-04 4 P 0 55 22.80 A 565 D Common Stock 2013-04-04 4 P 0 500 22.82 A 1065 D /s/ Allen Li, by Mark E. Mathiasen Pursuant to a Power of Attorney 2013-04-04 EX-24 2 poali.txt POWER OF ATTORNEY The undersigned, being a person required to file a statement under Section 16(a) of the Securities Exchange Act of 1934, as amended (the '1934 Act'), with respect to Guggenheim Build America Bonds Managed Duration Trust, a Delaware statutory trust, hereby authorizes, designates and appoints Kevin M. Robinson and Mark E. Mathiasen to act as attorney-in-fact to execute and file statements on Form 3, Form 4 and Form 5 and any successor forms adopted by the Securities Exchange Commission, as required by the 1934 Act and the Investment Company Act of 1940, as amended, and the rules thereunder, and to take such other actions as such attorney-in-fact may deem necessary or appropriate in connection with such statements, hereby confirming and ratifying all actions that such attorney-in-fact has taken or may take in reliance hereon. This power of attorney shall continue in effect until the undersigned no longer has an obligation to file statements under the section cited above, or until specifically terminated in writing by the undersigned. IN WITNESS WHEREOF, the undersigned has duly executed this power of attorney on the 23rd day of December, 2010. Signature /s/ Allen Li -------------------------