-----BEGIN PRIVACY-ENHANCED MESSAGE----- Proc-Type: 2001,MIC-CLEAR Originator-Name: webmaster@www.sec.gov Originator-Key-Asymmetric: MFgwCgYEVQgBAQICAf8DSgAwRwJAW2sNKK9AVtBzYZmr6aGjlWyK3XmZv3dTINen TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB MIC-Info: RSA-MD5,RSA, Oq06VpwNPV7UMSMd6x9GsXk1zAeEuoCGcTNw8YcME9pBLug9OKTin3z9IA1cLS47 3Ul+0vNK5qcAGJVovJ/lZw== 0000900092-10-000735.txt : 20100825 0000900092-10-000735.hdr.sgml : 20100825 20100825111021 ACCESSION NUMBER: 0000900092-10-000735 CONFORMED SUBMISSION TYPE: N-PX PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20100630 FILED AS OF DATE: 20100825 DATE AS OF CHANGE: 20100825 EFFECTIVENESS DATE: 20100825 FILER: COMPANY DATA: COMPANY CONFORMED NAME: BLACKROCK MUNIYIELD INSURED INVESTMENT FUND CENTRAL INDEX KEY: 0000891188 IRS NUMBER: 223196058 FISCAL YEAR END: 0630 FILING VALUES: FORM TYPE: N-PX SEC ACT: 1940 Act SEC FILE NUMBER: 811-07156 FILM NUMBER: 101036779 BUSINESS ADDRESS: STREET 1: 100 BELLEVUE PARKWAY CITY: WILMINGTON STATE: DE ZIP: 19809 BUSINESS PHONE: 800-441-7762 MAIL ADDRESS: STREET 1: 100 BELLEVUE PARKWAY CITY: WILMINGTON STATE: DE ZIP: 19809 FORMER COMPANY: FORMER CONFORMED NAME: BLACKROCK MUNIYIELD FLORIDA INSURED FUND DATE OF NAME CHANGE: 20070611 FORMER COMPANY: FORMER CONFORMED NAME: MUNIYIELD FLORIDA INSURED FUND /NJ/ DATE OF NAME CHANGE: 19921217 FORMER COMPANY: FORMER CONFORMED NAME: MUNIYIELD FLORIDA FUND II DATE OF NAME CHANGE: 19600201 N-PX 1 mft.htm MFT mft.htm - Produced by Pellegrini and Associates, Inc. | 134 Spring Street New York NY 10012 | (212) 925-5151

UNITEDSTATES
SECURITIESANDEXCHANGECOMMISSION
Washington,D.C.20549

FORM N-PX

ANNUAL REPORT OF PROXY VOTING RECORD OF REGISTERED MANAGEMENT
INVESTMENT COMPANY

Investment Company Act file number 811-07156

Name of Fund: BlackRock MuniYield Insured Investment Fund (MFT)

Fund Address: 100 Bellevue Parkway, Wilmington, DE 19809

Name and address of agent for service: Anne Ackerley, Chief Executive Officer, BlackRock MuniYield Insured
Investment Fund, 55 East 52nd Street, New York City, NY 10055.

Registrant’s telephone number, including area code: (800) 882-0052, Option 4

Date of fiscal year end: 07/31

Date of reporting period: 07/01/2009 – 06/30/2010

Item 1 – Proxy Voting Record – There were no matters relating to a portfolio security considered at any shareholder
meeting held during the period ended June 30, 2010 with respect to which the registrant was entitled to vote.

Pursuant to the requirements of the Investment Company Act of 1940, the registrant has duly caused this report to be
signed on its behalf by the undersigned, thereunto duly authorized.

BlackRock MuniYield Insured Investment Fund

By: /s/ Anne Ackerley
Anne Ackerley
Chief Executive Officer of
BlackRock MuniYield Insured Investment Fund

Date: August 23, 2010

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