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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM N-Q

QUARTERLY SCHEDULE OF PORTFOLIO HOLDINGS OF REGISTERED MANAGEMENT
INVESTMENT COMPANY

Investment Company Act file number 811-06053

Invesco Insured Municipal Bond Trust

(Exact name of registrant as specified in charter)

1555 Peachtree Street, N.E., Atlanta, Georgia	30309
(Address of principal executive offices)	(Zip code)

Philip A. Taylor 1555 Peachtree Street, N.E., Atlanta, Georgia 30309

(Name and address of agent for service)

Registrant’s telephone number, including area code: (713) 626-1919

Date of fiscal year end: 2/28

Date of reporting period: 5/31/11

Item 1. Schedule of Investments.

Invesco Insured Municipal Bond Trust
Quarterly Schedule of Portfolio Holdings
May 31, 2011

                      

           invesco.com/us           MS-CE-IMB-QTR-1      05/11           Invesco Advisers, inc.

Schedule of Investments
May 31, 2011
(Unaudited)

						Principal
	Interest			Maturity		Amount
	Rate			Date		(000)		Value
Municipal Obligations—153.80%
Alabama—0.87%
Birmingham (City of) Airport Authority; Series 2010, Airport RB (INS-AGM) (a)		5.25	%		07/01/30	$	300	$	306,177
Chatom (Town of) Industrial Development Board (PowerSouth Energy Cooperative); Series 2010 A, Ref. Gulf Opportunity Zone RB (INS-AGC) (a)		5.00	%		08/01/37		175		176,204
									482,381
Alaska—2.34%
Alaska (State of) Industrial Development & Export Authority (Snettisham Hydroelectric); Series 1998, Power RB (INS-AMBAC) (a)(b)		5.00	%		01/01/27		1,400		1,295,518
Arizona—0.87%
Arizona (State of); Series 2008 A, COP (INS-AGM) (a)		5.00	%		09/01/26		290		296,055
Glendale (City of) Industrial Development Authority (Midwestern University); Series 2010, RB		5.00	%		05/15/35		100		92,882
Series 2010, RB		5.13	%		05/15/40		100		92,690
									481,627
California—27.61%
Alhambra Unified School District (Election of 2004); Series 2009 B, Unlimited Tax CAB GO Bonds (INS-AGC) (a)(c)		0.00	%		08/01/36		485		85,229
Alvord Unified School District (Election of 2007); Series 2008 A, Unlimited Tax GO Bonds (INS-AGM) (a)		5.00	%		08/01/24		220		230,047
Anaheim (City of) Public Financing Authority (Electric System Distribution Facilities); Series 2007 A, RB (INS-NATL) (a)		4.50	%		10/01/37		1,500		1,373,745
Beverly Hills Unified School District (Election of 2008); Series 2009, Unlimited Tax CAB GO Bonds (c)		0.00	%		08/01/26		215		93,310
Series 2009, Unlimited Tax CAB GO Bonds (c)		0.00	%		08/01/31		420		125,508
California (State of) Department of Water Resources; Series 2008 H, Power Supply RB (INS-AGM) (a)		5.00	%		05/01/22		550		614,922
California (State of) Health Facilities Financing Authority (Scripps Health); Series 2010 A, RB		5.00	%		11/15/36		400		364,112
California (State of) Statewide Communities Development Authority (Cottage Health System Obligated Group); Series 2010, RB		5.00	%		11/01/40		200		182,514
Clovis Unified School District (Election of 2004); Series 2004 A, Unlimited Tax CAB GO Bonds (INS-NATL) (a)(c)		0.00	%		08/01/29		105		33,907
Dry Creek Joint Elementary School District (Election of 2008); Series 2009 E, Unlimited Tax CAB GO Bonds (c)		0.00	%		08/01/43		2,120		258,491
Eastern Municipal Water District; Series 2006 A, Water & Sewer Revenue COP (INS-NATL) (a)		5.00	%		07/01/32		1,000		1,006,870
El Segundo Unified School District (Election of 2008); Series 2009 A, Unlimited Tax CAB GO Bonds (c)		0.00	%		08/01/31		120		32,206
Series 2009 A, Unlimited Tax CAB GO Bonds (c)		0.00	%		08/01/32		460		114,715
Golden State Tobacco Securitization Corp.; Series 2005 A, Enhanced Tobacco Settlement Asset-Backed RB (INS-FGIC) (a)		5.00	%		06/01/38		500		432,960
Los Angeles (City of) Department of Airports (Los Angeles International Airport); Series 2010 B, Sub. RB		5.00	%		05/15/40		200		197,432
Los Angeles (City of) Department of Water & Power; Series 2004 C, Water System RB (INS-NATL) (a)(d)		5.00	%		07/01/25		1,000		1,063,370
Los Angeles Unified School District (Election of 2004); Series 2006 F, Unlimited Tax GO Bonds (INS-FGIC) (a)		5.00	%		07/01/30		1,000		1,015,870
Menifee Union School District (Election of 2008); Series 2009 C, Unlimited Tax CAB GO Bonds (INS-AGC) (a)(c)		0.00	%		08/01/35		300		60,027
Oakland (City of) Joint Powers Financing Authority (Oakland Administration Buildings); Series 2008 B, Ref. Lease RB (INS-AGC) (a)		5.00	%		08/01/23		250		256,537
Oakland (Port of); Series 2002 L, RB (b)(e)(f)		5.00	%		11/01/12		55		58,629
Series 2002 L, RB (INS-NATL) (a)(b)		5.00	%		11/01/21		445		447,826

See accompanying notes which are an integral part of this schedule.

           Invesco Insured Municipal Bond Trust

						Principal
	Interest			Maturity		Amount
	Rate			Date		(000)		Value
California—(continued)
Patterson Joint Unified School District (Election of 2008); Series 2009 B, Unlimited Tax CAB GO Bonds (INS-AGM) (a)(c)		0.00	%		08/01/37	$	1,785	$	311,839
Poway Unified School District (Election of 2008 - School Facilities Improvement District No. 2007-1); Series 2009 A, Unlimited Tax CAB GO Bonds (c)		0.00	%		08/01/28		705		236,302
Series 2009 A, Unlimited Tax CAB GO Bonds (c)		0.00	%		08/01/31		760		203,969
Regents of the University of California; Series 2007 J, General RB (INS-AGM) (a)(d)		4.50	%		05/15/31		2,205		2,105,620
Series 2007 J, General RB (INS-AGM) (a)(d)		4.50	%		05/15/35		1,795		1,627,382
Sacramento (County of) Sanitation Districts Financing Authority; Series 2006, RB (INS-NATL) (a)		5.00	%		12/01/28		1,000		1,039,170
San Francisco (City & County of) (Laguna Honda Hospital); Series 2008 R-3, Ref. Unlimited Tax GO Bonds (INS-AGC) (a)(d)		5.00	%		06/15/28		1,000		1,023,259
Twin Rivers Unified School District (School Facility Bridge Funding Program); Series 2007, COP (INS-AGM) (a)(f)(g)		3.50	%		05/31/13		400		400,160
Yosemite Community College District (Election of 2004); Series 2008, Unlimited Tax CAB GO Bonds (INS-AGM) (a)(c)		0.00	%		08/01/22		525		280,859
									15,276,787
Colorado—1.98%
Colorado (State of) Regional Transportation District (Denver Transit Partners Eagle P3); Series 2010, Private Activity RB		6.00	%		01/15/41		250		250,675
Denver (City of) Convention Center Hotel Authority; Series 2006, Ref. Sr. RB (INS-SGI) (a)		5.00	%		12/01/30		1,000		847,260
									1,097,935
Connecticut—0.52%
Connecticut (State of) Health & Educational Facilities Authority (Quinnipiac University); Series 2007 K-1, RB (INS-NATL) (a)		5.00	%		07/01/24		275		288,692
District of Columbia—5.04%
District of Columbia Water & Sewer Authority; Series 2008 A, Ref. Public Utility Sub. Lien RB (INS-AGC) (a)		5.00	%		10/01/28		245		257,799
District of Columbia; Series 2006 B-1, Ballpark RB (INS-NATL) (a)		5.00	%		02/01/31		1,000		925,010
Series 2008 E, Unlimited Tax GO Bonds (INS-BHAC) (a)(d)		5.00	%		06/01/26		260		276,474
Series 2008 E, Unlimited Tax GO Bonds (INS-BHAC) (a)(d)		5.00	%		06/01/27		260		274,682
Series 2008 E, Unlimited Tax GO Bonds (INS-BHAC) (a)(d)		5.00	%		06/01/28		520		545,808
Series 2009 A, Income Tax Sec. RB (d)		5.25	%		12/01/27		460		510,002
									2,789,775
Florida—19.84%
Broward (County of) Educational Facilities Authority (Nova Southeastern University); Series 2006, RB (INS-AGC) (a)		5.00	%		04/01/31		1,000		988,160
Broward (County of) School Board; Series 2001 A, COP (INS-AGM) (a)		5.00	%		07/01/26		2,000		2,004,820
Citizens Property Insurance Corp.; Series 2010 A-1, Sr. Sec. High Risk Account RB		5.00	%		06/01/14		500		531,545
Jacksonville (City of); Series 2003 C, Ref. Excise Taxes RB (INS-NATL) (a)(b)		5.25	%		10/01/19		1,500		1,552,395
Miami Beach (City of); Series 2000, Water & Sewer RB (INS-AMBAC) (a)		5.75	%		09/01/25		865		876,409
Miami-Dade (County of) Educational Facilities Authority (University of Miami); Series 2008 A, RB (INS-BHAC) (a)		5.50	%		04/01/38		400		409,584
Miami-Dade (County of) Expressway Authority; Series 2010 A, Ref. Toll System RB (INS-AGC) (a)		5.00	%		07/01/35		300		296,880
Miami-Dade (County of); Series 2005 A, Sub. Special Obligation Conv. CAB RB (INS-NATL) (a)(c)		0.00	%		10/01/30		1,000		838,320
Series 2010, Water & Sewer System RB (INS-AGM) (a)		5.00	%		10/01/39		400		402,492
Mid-Bay Bridge Authority; Series 2008 A, Ref. RB (INS-AGC) (a)		5.00	%		10/01/27		280		272,516
Orange (County of) Health Facilities Authority (Orlando Regional Healthcare System); Series 2007 A-2, Hospital VRD RB (INS-AGM) (a)(h)		0.40	%		10/01/41		1,400		1,400,000
Palm Beach (County of) Solid Waste Authority; Series 2009, Improvement RB (INS-BHAC) (a)		5.50	%		10/01/23		350		395,797

See accompanying notes which are an integral part of this schedule.

           Invesco Insured Municipal Bond Trust

						Principal
	Interest			Maturity		Amount
	Rate			Date		(000)		Value
Florida—(continued)
Port St. Lucie (City of); Series 2009, Ref. Utility System RB (INS-AGC) (a)		5.00	%		09/01/29	$	500	$	513,260
Tampa (City of) Sports Authority; Series 2005, Ref. Sales Tax RB (INS-AGM) (a)		5.00	%		01/01/26		480		492,552
									10,974,730
Georgia—1.93%
Atlanta (City of); Series 2010 A, General Airport RB (INS-AGM) (a)		5.00	%		01/01/35		800		801,904
Metropolitan Atlanta Rapid Transit Authority; Series 2007 B, Ref. Third Indenture Sales Tax RB (INS-AGM) (a)		5.00	%		07/01/34		265		267,271
									1,069,175
Idaho—1.66%
Idaho (State of) Health Facilities Authority (St. Luke’s Regional Medical Center); Series 2005, RB (INS-AGM) (a)		5.00	%		07/01/35		425		429,467
Idaho (State of) Housing & Finance Association (Federal Highway Trust Fund); Series 2008 A, Grant & RAB (INS-AGC) (a)		5.25	%		07/15/25		455		490,949
									920,416
Illinois—13.03%
Chicago (City of) (O’Hare International Airport); Series 2001 A, Second Lien Passenger Facility Charge RB (INS-AMBAC) (a)(b)		5.38	%		01/01/32		2,000		1,908,900
Chicago (City of) Park District (Harbor Facilities Revenues Alternate Revenue Source); Series 2003 C, Ref. Unlimited Tax GO Bonds (INS-AMBAC) (a)		5.00	%		01/01/24		1,500		1,566,165
Chicago (City of) Transit Authority (FTA Section 5309 Fixed Guideway Modernization Formula Funds); Series 2008, Capital Grant Receipts RB (INS-AGC) (a)		5.25	%		06/01/25		295		301,847
Chicago (City of); Series 2007 A, Ref. Project Unlimited Tax GO Bonds (INS-AGM) (a)(d)(i)		5.00	%		01/01/37		1,350		1,294,475
DeKalb County Community Unit School District No. 428; Series 2008, School Unlimited Tax GO Bonds (INS-AGM) (a)		5.00	%		01/01/24		210		222,854
Illinois (State of) Finance Authority (Northwestern Memorial Hospital); Series 2009 B, RB		5.75	%		08/15/30		365		382,710
Illinois (State of) Finance Authority (Swedish American Hospital); Series 2004, RB (INS-AMBAC) (a)		5.00	%		11/15/31		1,000		900,440
Illinois (State of) Finance Authority (Swedish Covenant Hospital); Series 2010 A, Ref. RB		5.75	%		08/15/29		300		290,763
Railsplitter Tobacco Settlement Authority; Series 2010, RB		5.50	%		06/01/23		340		338,232
									7,206,386
Iowa—1.40%
Iowa (State of) (IJOBS Program); Series 2009 A, Special Obligation RB (d)(i)		5.00	%		06/01/25		405		444,022
Series 2009 A, Special Obligation RB (d)(i) 5.00% 06/01/26 305 331,691
									775,713
Kansas—0.71%
Kansas (State of) Development Finance Authority (Adventist Health System/Sunbelt Obligated Group); Series 2009 C, Hospital RB		5.50	%		11/15/29		140		149,550
Wyandotte (County of) & Kansas City (City of) Unified Government; Series 2009 A, Utility System Improvement RB (INS-BHAC) (a)		5.25	%		09/01/34		235		242,910
									392,460
Kentucky—1.59%
Kentucky (Commonwealth of) State Property & Buildings Commission (Project No. 93); Series 2009, Ref. RB (INS-AGC) (a)		5.25	%		02/01/28		360		381,751
Louisville & Jefferson County Visitors & Convention Commission (International Convention Center); Series 2004 B, Ref. VRD Dedicated Tax RB (INS-AGM) (a)(h)		0.14	%		12/01/22		500		500,000
									881,751
Louisiana—0.74%
Lafayette (City of) Public Trust Financing Authority (Ragin’ Cajun Facilities, Inc. Housing & Parking); Series 2010, RB (INS-AGM) (a)		5.50	%		10/01/35		400		408,308

See accompanying notes which are an integral part of this schedule.

           Invesco Insured Municipal Bond Trust

						Principal
	Interest			Maturity		Amount
	Rate			Date		(000)		Value
Massachusetts—4.82%
Massachusetts (State of) Health & Educational Facilities Authority (Boston College); Series 2008 M-2, RB		5.50	%		06/01/30	$	500	$	591,405
Massachusetts (State of) Health & Educational Facilities Authority (Harvard University); Series 2009 A, RB (d)		5.50	%		11/15/36		1,435		1,570,134
Massachusetts (State of) Health & Educational Facilities Authority (Massachusetts Institute of Technology); Series 2009 O, RB (d)		5.50	%		07/01/36		465		503,911
									2,665,450
Michigan—3.80%
Detroit (City of); Series 2006 C, Ref. Second Lien Water Supply System RB (INS-AGM) (a)		5.00	%		07/01/26		275		269,849
Wayne (Charter County of) (Detroit Metropolitan Wayne County Airport); Series 2002 D, Ref. Airport RB (INS-NATL) (a)(b)		5.50	%		12/01/17		1,500		1,534,230
Wayne State University Board of Governors; Series 2008, Ref. General RB (INS-AGM) (a)		5.00	%		11/15/29		290		299,370
									2,103,449
Minnesota—3.21%
Minneapolis (City of)(Fairview Health Services); Series 2005 D, Health Care System RB (INS-AMBAC) (a)		5.00	%		11/15/30		1,000		974,490
Minneapolis & St. Paul (Cities of) Housing & Redevelopment Authority (Children’s Hospitals & Clinics of Minnesota); Series 2007 A, VRD Health Care System RB (INS-AGM) (a)(h)		0.15	%		08/15/37		800		800,000
									1,774,490
Missouri—0.38%
Kansas City (City of) Industrial Development Authority (Downtown Redevelopment District); Series 2011 A, Ref. RB		5.50	%		09/01/24		70		76,342
Series 2011 A, Ref. RB		5.50	%		09/01/25		125		135,111
									211,453
Montana—0.32%
Montana (State of) Facility Finance Authority (Benefis Health System Obligated Group); Series 2011 A, Hospital RB (INS-AGC) (a)		5.75	%		01/01/31		170		178,089
Nevada—1.91%
Nevada (State of); Series 2008 C, Capital Improvement & Cultural Affairs Limited Tax GO Bonds (INS-AGM) (a)(d)		5.00	%		06/01/26		1,000		1,053,980
New Hampshire—0.90%
New Hampshire (State of) Health & Education Facilities Authority (University System of New Hampshire); Series 2001, RB (INS-AMBAC) (a)		5.13	%		07/01/33		495		496,010
New Jersey—1.95%
New Jersey (State of) Economic Development Authority (Provident Group-Montclair Properties LLC — Montclair State University Student Housing); Series 2010 A, RB		5.88	%		06/01/42		175		162,682
New Jersey (State of) Economic Development Authority; Sub-Series 2005 N-1, Ref. School Facilities Construction RB (INS-AMBAC) (a)		5.50	%		09/01/24		265		290,601
New Jersey (State of) Housing & Mortgage Finance Agency; Series 2000 CC, Home Buyer RB (INS-NATL) (a)(b)		5.88	%		10/01/31		100		100,043
New Jersey (State of) Transportation Trust Fund Authority; Series 2006 C, Transportation System CAB RB (INS-AGC) (a)(c)		0.00	%		12/15/26		1,290		525,791
									1,079,117
New York—15.38%
Long Island Power Authority; Series 2004 A, Electrical System RB (INS-AMBAC) (a)		5.00	%		09/01/34		1,000		1,003,940
Metropolitan Transportation Authority; Series 2002 B, Service Contract RB (INS-NATL) (a)		5.50	%		07/01/20		2,000		2,085,840
Series 2010 D, RB		5.00	%		11/15/34		275		274,051
New York (State of) Dormitory Authority (Memorial Sloan-Kettering Cancer Center); Series 2003-1, RB (INS-NATL) (a)		5.00	%		07/01/24		2,000		2,083,160

See accompanying notes which are an integral part of this schedule.

           Invesco Insured Municipal Bond Trust

						Principal
	Interest			Maturity		Amount
	Rate			Date		(000)		Value
New York—(continued)
New York (State of) Dormitory Authority (Mental Health Services Facilities Improvement); Series 2007 A, State Supported Debt RB (INS-AGM) (a)		5.00	%		02/15/27	$	500	$	519,435
New York (State of) Dormitory Authority (The City of New York); Series 2005 A, Court Facilities Lease RB (INS-AMBAC) (a)		5.50	%		05/15/28		400		446,828
New York (City of) Industrial Development Agency (Queens Baseball Stadium); Series 2006, PILOT RB (INS-AMBAC) (a)		5.00	%		01/01/31		1,145		999,161
New York (City of) Industrial Development Agency (Yankee Stadium); Series 2006, PILOT RB (INS-FGIC) (a)		5.00	%		03/01/46		445		394,711
New York (City of); Sub-series 2001 A-6, VRD Unlimited Tax GO Bonds (INS-AGM)(a)(h)		0.45	%		11/01/26		700		700,000
									8,507,126
Ohio—5.27%
American Municipal Power-Ohio Inc. (Prairie State Energy Campus); Series 2008 A, RB (INS-AGC) (a)(d)		5.25	%		02/15/33		2,500		2,574,500
Ohio (State of) Higher Educational Facility Commission (Summa Health System); Series 2010, RB		5.75	%		11/15/35		175		165,566
Ohio (State of) Water Development Authority (FirstEnergy Nuclear Generation Corp.); Series 2009 A, Ref. PCR (f)(g)		5.88	%		06/01/16		160		176,352
									2,916,418
Oklahoma—1.08%
Oklahoma (State of) Development Finance Authority (Obligated Group consisting of INTEGRIS Baptist Medical Center, Inc., INTEGRIS South Oklahoma City Hospital Corp. & INTEGRIS Rural Health, Inc.); Series 2007 A-3, Ref. VRD Health System RB (INS-AGC) (a)(h)		0.14	%		08/15/33		600		600,000
Pennsylvania—2.90%
Pennsylvania (State of) Economic Development Financing Authority (Waste Management, Inc.); Series 2004 A, Solid Waste Disposal RB (f)(g)		3.70	%		05/01/15		350		359,506
Philadelphia (City of); Series 2009 B, Limited Tax GO Bonds (INS-AGC) (a)		7.13	%		07/15/38		155		171,813
Philadelphia School District; Series 2008 E, Limited Tax GO Bonds (INS-BHAC) (a)		5.13	%		09/01/23		1,000		1,075,670
									1,606,989
Puerto Rico—1.17%
Puerto Rico Sales Tax Financing Corp.; First Sub. Series 2009 A, RB (e)(f)		5.00	%		08/01/11		260		262,098
First Sub. Series 2010 C, RB		5.25	%		08/01/41		400		382,492
									644,590
South Carolina—3.03%
Piedmont Municipal Power Agency; Series 2008 C, Ref. Electric RB (INS-AGC) (a)		5.75	%		01/01/34		630		661,179
South Carolina (State of) Public Service Authority (Santee Cooper); Series 2006 A, RB (INS-NATL) (a)		5.00	%		01/01/36		1,000		1,016,120
									1,677,299
Texas—15.68%
Capital Area Cultural Education Facilities Finance Corp. (The Roman Catholic Diocese of Austin); Series 2005 B, RB		6.13	%		04/01/45		200		200,318
Dallas & Fort Worth (Cities of)(International Airport); Series 2001 A, Ref. Joint Improvement RB (INS-NATL) (a)(b)		5.50	%		11/01/31		2,000		1,993,820
Friendswood Independent School District; Series 2008, Schoolhouse Unlimited Tax GO Bonds (CEP-Texas Permanent School Fund)		5.00	%		02/15/27		175		188,445
Houston (City of); Series 2004 B, Ref. First Lien Combined Utility System RB (INS-NATL) (a)		5.25	%		05/15/23		500		541,070
Houston Community College System; Series 2008, Sr. Lien Student Fee RB (INS-AGM) (a)		5.00	%		04/15/25		275		292,421
Humble Independent School District; Series 2008 A, School Building Unlimited Tax GO Bonds (INS-AGC) (a)		5.00	%		02/15/26		285		308,305
Lower Colorado River Authority (Transmission Services Corp.); Series 2004, Ref. Transmission Contract RB (INS-NATL) (a)		5.00	%		05/15/25		1,000		1,000,550

See accompanying notes which are an integral part of this schedule.

           Invesco Insured Municipal Bond Trust

						Principal
	Interest			Maturity		Amount
	Rate			Date		(000)		Value
Texas—(continued)
North Texas Tollway Authority; Series 2008 D, Ref. First Tier System CAB RB (INS-AGC) (a)(c)		0.00	%		01/01/28	$	1,500	$	555,555
Series 2008 D, Ref. First Tier System CAB RB (INS-AGC) (a)(c)		0.00	%		01/01/31		320		95,334
San Jacinto River Authority (Groundwater Reduction Plan Division); Series 2011, Special Project RB (INS-AGM) (a)		5.00	%		10/01/32		200		200,730
Series 2011, Special Project RB (INS-AGM) (a)		5.00	%		10/01/37		210		208,014
Texas (State of) Turnpike Authority; Series 2002, First Tier CAB RB (INS-BHAC) (a)(c)		0.00	%		08/15/27		1,265		504,798
University of Houston System Board of Regents; Series 2008, Ref. Consolidated RB (INS-AGM) (a)(d)		5.00	%		02/15/33		2,500		2,585,400
									8,674,760
Utah—1.64%
Utah (State of) Transit Authority; Series 2008 A, Sales Tax RB (INS-AGM) (a)		5.00	%		06/15/36		880		904,939
Virginia—4.51%
Norfolk (City of); Series 1995, Water RB (INS-NATL) (a)		5.88	%		11/01/20		2,000		2,007,760
Roanoke (City of) Economic Development Authority (Carilion Clinic Obligated Group); Series 2010, Ref. Hospital RB		5.00	%		07/01/33		250		245,077
Roanoke (City of) Industrial Development Authority (Carilion Health System Obligated Group); Series 2005 B, Hospital RB (INS-AGM) (a)		5.00	%		07/01/38		250		244,723
									2,497,560
Washington—5.10%
Grant (County of) Public Utility District No. 2; Series 2005 A, Ref. Wanapum Hydro Electric RB (INS-NATL) (a)		5.00	%		01/01/34		950		953,201
Washington (State of); Series 2004 F, Motor Vehicle Fuel Unlimited Tax CAB GO Bonds (INS-AMBAC) (a)(c)		0.00	%		12/01/29		800		326,288
Series 2010 A, Various Purpose Unlimited Tax GO Bonds (d)		5.00%			08/01/29		705		754,428
Series 2010 A, Various Purpose Unlimited Tax GO Bonds (d)		5.00%			08/01/30		740		788,167
									2,822,084
West Virginia—0.62%
West Virginia (State of) Economic Development Authority (Appalachian Power Co. — Amos); Series 2010 A, Ref. Solid Waste Disposal Facilities RB (f)(g)		5.38	%		12/01/20		350		342,864
TOTAL INVESTMENTS(j)—153.80% (Cost $84,645,314)									85,098,321
Floating Rate Note Obligations—(21.61)%
Notes with interest rates ranging from 0.18% to 0.33% at 05/31/11 and contractual maturities of collateral ranging from 06/01/25 to 01/01/37 (See Note 1D)(k)									(11,955,000	)
OTHER ASSETS LESS LIABILITIES—0.61%									335,948
PREFERRED SHARES—(32.80)%									(18,150,000	)
NET ASSETS APPLICABLE TO COMMON SHARES—100.00%								$	55,329,269

Investment Abbreviations:

AGC	— Assured Guaranty Corp.
AGM	— Assured Guaranty Municipal Corp.
AMBAC	— American Municipal Bond Assurance Corp.*
BHAC	— Berkshire Hathaway Assurance Corp.
CAB	— Capital Appreciation Bonds
CEP	— Credit Enhancement Provider
Conv.	— Convertible
COP	— Certificates of Participation
FGIC	— Financial Guaranty Insurance Co.
FTA	— Federal Transit Administration
GO	— General Obligation
INS	— Insurer

See accompanying notes which are an integral part of this schedule.

            Invesco Insured Municipal Bond Trust

NATL	— National Public Finance Guarantee Corp.
PCR	— Pollution Control Revenue Bonds
PILOT	— Payment-in-Lieu-of-Tax
RAB	— Revenue Anticipation Bonds
RB	— Revenue Bonds
Ref.	— Refunding
Sec.	— Secured
SGI	— Syncora Guarantee, Inc.
Sr.	— Senior
Sub.	— Subordinated
VRD	— Variable Rate Demand

Notes to Schedule of Investments:

(a)	Principal and/or interest payments are secured by the bond insurance company listed.
(b)	Security subject to the alternative minimum tax.
(c)	Zero coupon bond issued at a discount.
(d)	Underlying security related to Dealer Trusts entered into by the Trust. See Note 1D.
(e)	Advance refunded; secured by an escrow fund of U.S. Government obligations or other highly rated collateral.
(f)	Security has an irrevocable call by the issuer or mandatory put by the holder. Maturity date reflects such call or put.
(g)	Interest or dividend rate is redetermined periodically. Rate shown is the rate in effect on May 31, 2011.
(h)	Demand security payable upon demand by the Trust at specified time intervals no greater than thirteen months. Interest rate is redetermined periodically. Rate shown is the rate in effect on May 31, 2011.
(i)	Security is subject to a shortfall agreement which may require the Trust to pay amounts to a counterparty in the event of a significant decline in the market value of the security underlying the Dealer Trusts. In case of a shortfall, the maximum potential amount of payments the Trust could ultimately be required to make under the agreement is $1,375,000. However, such shortfall payment would be reduced by the proceeds from the sale of the security underlying the Dealer Trusts.
(j)	This table provides a listing of those entities that have either issued, guaranteed, backed or otherwise enhanced the credit quality of more than 5% of the securities held in the portfolio. In instances where the entity has guaranteed, backed or otherwise enhanced the credit quality of a security, it is not primarily responsible for the issuer’s obligations but may be called upon to satisfy the issuer’s obligations.

Entities	Percentage
Assured Guaranty Municipal Corp.	26.4%
National Public Finance Guarantee Corp.	25.7
American Municipal Bond Assurance Corp. *	13.0
Assured Guaranty Corp.	12.7

(k)	Floating rate note obligations related to securities held. The interest rates shown reflect the rates in effect at May 31, 2011. At May 31, 2011, the Trust’s investments with a value of $19,327,305 are held by Dealer Trusts and serve as collateral for the $11,955,000 in the floating rate note obligations outstanding at that date.
*	AMBAC filed for bankruptcy on November 8, 2010.

See accompanying notes which are an integral part of this schedule.

                Invesco Insured Municipal Bond Trust

Notes to Quarterly Schedule of Portfolio Holdings
May 31, 2011
(Unaudited)

NOTE 1 — Significant Accounting Policies

A. Security Valuations — Securities, including restricted securities, are valued according to the following policy.

     Securities are fair valued using an evaluated quote provided by an independent pricing service approved by the Board of Trustees. Evaluated quotes provided by the pricing service may be determined without exclusive reliance on quoted prices and may reflect appropriate factors such as institution-size trading in similar groups of securities, yield, quality, coupon rate, maturity, type of issue, individual trading characteristics and other market data. Short-term obligations, including commercial paper, having 60 days or less to maturity are recorded at amortized cost which approximates value. Securities with a demand feature exercisable within one to seven days are valued at par. Debt securities are subject to interest rate and credit risks. In addition, all debt securities involve some risk of default with respect to interest and principal payments.

     Securities for which market quotations either are not readily available or are unreliable are valued at fair value as determined in good faith by or under the supervision of the Trust’s officers following procedures approved by the Board of Trustees. Some of the factors which may be considered in determining fair value are fundamental analytical data relating to the investment; the nature and duration of any restrictions on transferability or disposition; trading in similar securities by the same issuer or comparable companies; relevant political, economic or issuer specific news; and other relevant factors under the circumstances.

     Valuations change in response to many factors including the historical and prospective earnings of the issuer, the value of the issuer’s assets, general economic conditions, interest rates, investor perceptions and market liquidity. Because of the inherent uncertainties of valuation, the values reflected in the financial statements may materially differ from the value received upon actual sale of those investments.

B. Securities Transactions and Investment Income — Securities transactions are accounted for on a trade date basis. Realized gains or losses on sales are computed on the basis of specific identification of the securities sold. Interest income is recorded on the accrual basis from settlement date. Dividend income (net of withholding tax, if any) is recorded on the ex-dividend date. Bond premiums and discounts are amortized and/or accreted for financial reporting purposes.

     The Trust may periodically participate in litigation related to Trust investments. As such, the Trust may receive proceeds from litigation settlements. Any proceeds received are included in the Statement of Operations as realized gain (loss) for investments no longer held and as unrealized gain (loss) for investments still held.

     Brokerage commissions and mark ups are considered transaction costs and are recorded as an increase to the cost basis of securities purchased and/or a reduction of proceeds on a sale of securities. Such transaction costs are included in the determination of net realized and unrealized gain (loss) from investment securities reported in the Statement of Operations and the Statement of Changes in Net Assets and the net realized and unrealized gains (losses) on securities per share in the Financial Highlights. Transaction costs are included in the calculation of the Trust’s net asset value and, accordingly, they reduce the Trust’s total returns. These transaction costs are not considered operating expenses and are not reflected in net investment income reported in the Statement of Operations and Statement of Changes in Net Assets, or the net investment income per share and ratios of expenses and net investment income reported in the Financial Highlights, nor are they limited by any expense limitation arrangements between the Trust and the investment adviser.

C. Country Determination — For the purposes of making investment selection decisions and presentation in the Schedule of Investments, the investment adviser may determine the country in which an issuer is located and/or credit risk exposure based on various factors. These factors include the laws of the country under which the issuer is organized, where the issuer maintains a principal office, the country in which the issuer derives 50% or more of its total revenues and the country that has the primary market for the issuer’s securities, as well as other criteria. Among the other criteria that may be evaluated for making this determination are the country in which the issuer maintains 50% or more of its assets, the type of security, financial guarantees and enhancements, the nature of the collateral and the sponsor organization. Country of issuer and/or credit risk exposure has been determined to be the United States of America, unless otherwise noted.

                Invesco Insured Municipal Bond Trust

D. Floating Rate Note Obligations — The Trust invests in inverse floating rate securities, such as Residual Interest Bonds (“RIBs”) or Tender Option Bonds (“TOBs”) for investment purposes and to enhance the yield of the Trust. Inverse floating rate investments tend to underperform the market for fixed rate bonds in a rising interest rate environment, but tend to outperform the market for fixed rate bonds when interest rates decline or remain relatively stable. Such transactions may be purchased in the secondary market without first owning the underlying bond or by the sale of fixed rate bonds by the Trust to special purpose trusts established by a broker dealer (“Dealer Trusts”) in exchange for cash and residual interests in the Dealer Trusts’ assets and cash flows, which are in the form of inverse floating rate securities. The Dealer Trusts finance the purchases of the fixed rate bonds by issuing floating rate notes to third parties and allowing the Trust to retain residual interest in the bonds. The floating rate notes issued by the Dealer Trusts have interest rates that reset weekly and the floating rate note holders have the option to tender their notes to the Dealer Trusts for redemption at par at each reset date. The residual interests held by the Trust (inverse floating rate investments) include the right of the Trust (1) to cause the holders of the floating rate notes to tender their notes at par at the next interest rate reset date, and (2) to transfer the municipal bond from the Dealer Trusts to the Trust, thereby collapsing the Dealer Trusts.

     TOBs are presently classified as private placement securities. Private placement securities are subject to restrictions on resale because they have not been registered under the Securities Act of 1933, as amended or are otherwise not readily marketable. As a result of the absence of a public trading market for these securities, they may be less liquid than publicly traded securities. Although these securities may be resold in privately negotiated transactions, the prices realized from these sales could be less than those originally paid by the Trust or less than what may be considered the fair value of such securities.

     The Trust accounts for the transfer of bonds to the Dealer Trusts as secured borrowings, with the securities transferred remaining in the Trust’s investment assets, and the related floating rate notes reflected as Trust liabilities under the caption Floating rate note obligations on the Statement of Assets and Liabilities. The Trust records the interest income from the fixed rate bonds under the caption Interest and records the expenses related to floating rate obligations and any administrative expenses of the Dealer Trusts a component of Interest, facilities and maintenance fees on the Statement of Operations.

     The Trust generally invests in inverse floating rate securities that include embedded leverage, thus exposing the Trust to greater risks and increased costs. The primary risks associated with inverse floating rate securities are varying degrees of liquidity and the changes in the value of such securities in response to changes in market rates of interest to a greater extent than the value of an equal principal amount of a fixed rate security having similar credit quality, redemption provisions and maturity which may cause the Trust’s net asset value to be more volatile than if it had not invested in inverse floating rate securities. In certain instances, the short-term floating rate interests created by the special purpose trust may not be able to be sold to third parties or, in the case of holders tendering (or putting) such interests for repayment of principal, may not be able to be remarketed to third parties. In such cases, the special purpose trust holding the long-term fixed rate bonds may be collapsed. In the case of RIBs or TOBs created by the contribution of long-term fixed income bonds by the Trust, the Trust will then be required to repay the principal amount of the tendered securities. During times of market volatility, illiquidity or uncertainty, the Trust could be required to sell other portfolio holdings at a disadvantageous time to raise cash to meet that obligation.

E. Other Risks — The value of, payment of interest on, repayment of principal for and the ability to sell a municipal security may be affected by constitutional amendments, legislative enactments, executive orders, administrative regulations, voter initiatives and the economics of the regions in which the issuers are located.

     Since, many municipal securities are issued to finance similar projects, especially those relating to education, health care, transportation and utilities, conditions in those sectors can affect the overall municipal securities market and a Trust’s investments in municipal securities.

     There is some risk that a portion or all of the interest received from certain tax-free municipal securities could become taxable as a result of determinations by the Internal Revenue Service.

                Invesco Insured Municipal Bond Trust

NOTE 2 — Additional Valuation Information

     Generally Accepted Accounting Principles (“GAAP”) defines fair value as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date, under current market conditions. GAAP establishes a hierarchy that prioritizes the inputs to valuation methods giving the highest priority to readily available unadjusted quoted prices in an active market for identical assets (Level 1) and the lowest priority to significant unobservable inputs (Level 3) generally when market prices are not readily available or are unreliable. Based on the valuation inputs, the securities or other investments are tiered into one of three levels. Changes in valuation methods may result in transfers in or out of an investment’s assigned level:

Level 1 —	Prices are determined using quoted prices in an active market for identical assets.
Level 2 —	Prices are determined using other significant observable inputs. Observable inputs are inputs that other market participants may use in pricing a security. These may include quoted prices for similar securities, interest rates, prepayment speeds, credit risk, yield curves, loss severities, default rates, discount rates, volatilities and others.
Level 3 —	Prices are determined using significant unobservable inputs. In situations where quoted prices or observable inputs are unavailable (for example, when there is little or no market activity for an investment at the end of the period), unobservable inputs may be used. Unobservable inputs reflect the Trust’s own assumptions about the factors market participants would use in determining fair value of the securities or instruments and would be based on the best available information.

     The following is a summary of the tiered valuation input levels, as of May 31, 2011. The level assigned to the securities valuations may not be an indication of the risk or liquidity associated with investing in those securities. Because of the inherent uncertainties of valuation, the values reflected in the financial statements may materially differ from the value received upon actual sale of those investments.

     During the three months ended May 31, 2011, there were no significant transfers between investment levels.

	Level 1		Level 2		Level 3		Total
Municipal Obligations	$	—	$	85,098,321	$	—	$	85,098,321

NOTE 3 — Investment Securities

Unrealized Appreciation (Depreciation) of Investment Securities on a Tax Basis
Aggregate unrealized appreciation of investment securities	$	1,941,655
Aggregate unrealized (depreciation) of investment securities		(1,445,291	)
Net unrealized appreciation of investment securities	$	496,364
Cost of investments for tax purposes is $84,601,957.

             Invesco Insured Municipal Bond Trust

Item 2. Controls and Procedures.

(a)

As of June 10, 2011, an evaluation was performed under the supervision and with the participation of the officers of the Registrant, including the Principal Executive Officer (“PEO”) and Principal Financial Officer (“PFO”), to assess the effectiveness of the Registrant’s disclosure controls and procedures, as that term is defined in Rule 30a-3(c) under the Investment Company Act of 1940 (“Act”), as amended. Based on that evaluation, the Registrant’s officers, including the PEO and PFO, concluded that, as of June 10, 2011, the Registrant’s disclosure controls and procedures were reasonably designed so as to ensure: (1) that information required to be disclosed by the Registrant on Form N-Q is recorded, processed, summarized and reported within the time periods specified by the rules and forms of the Securities and Exchange Commission; and (2) that material information relating to the Registrant is made known to the PEO and PFO as appropriate to allow timely decisions regarding required disclosure.

(b)

There have been no changes in the Registrant’s internal control over financial reporting (as defined in Rule 30a-3(d) under the Act) that occurred during the Registrant’s last fiscal quarter that have materially affected, or are reasonably likely to materially affect, the Registrant’s internal control over financial reporting.

Item 3. Exhibits.

Certifications of PEO and PFO as required by Rule 30a-2(a) under the Investment Company Act of 1940.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934 and 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.

Registrant: Invesco Insured Municipal Bond Trust

By:	/s/ Philip A. Taylor
	Philip A. Taylor
	Principal Executive Officer

Date: July 29, 2011

Pursuant to the requirements of the Securities and Exchange Act of 1934 and the Investment Company Act of 1940, this report has been signed below by the following persons on behalf of the Registrant and in the capacities and on the dates indicated.

By:	/s/ Philip A. Taylor
	Philip A. Taylor
	Principal Executive Officer

Date: July 29, 2011

By:	/s/ Sheri Morris
	Sheri Morris
	Principal Financial Officer

Date: July 29, 2011

EXHIBIT INDEX

Certifications of Principal Executive Officer (“PEO”) and Principal Financial Officer (“PFO”) as required by Rule 30a-2(a) under the Investment Company Act of 1940, as amended.