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 811-21036

 

Name of Fund: BlackRock Municipal Bond Trust (BBK)

 

Fund Address: 100 Bellevue Parkway, Wilmington, DE 19809

 

Name and address of agent for service: Donald C. Burke, Chief Executive Officer, BlackRock Municipal Bond Trust, 800 Scudders Mill Road, Plainsboro, NJ, 08536. Mailing address: P.O. Box 9011, Princeton, NJ, 08543-9011

 

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

 

Date of fiscal year end: 08/31/2009

 

Date of reporting period: 05/31/2009

 

Item 1 – Schedule of Investments


 

 

BlackRock Municipal Bond Trust

 

 

 

Schedule of Investments May 31, 2009 (Unaudited)

(Percentages shown are based on Net Assets)


 

 

 

 

 

 

 

 

 

 











State

 

Municipal Bonds

 

Par
(000)

 

Value

 











Alabama - 6.3%

 

Huntsville, Alabama, Health Care Authority Revenue Bonds, Series A, 5.75%, 6/01/11 (a)

 

$

7,500

 

$

8,245,875

 











Arizona - 7.0%

 

Glendale, Arizona, Municipal Property Corp., Excise Tax Revenue Refunding Bonds, Series A, 4.50%, 7/01/32 (b)

 

 

3,655

 

 

3,458,909

 

 

 

Goodyear, Arizona, GO, 4.25%, 7/01/37 (b)

 

 

1,250

 

 

1,099,012

 

 

 

Mohave County, Arizona, Unified School District Number 20 (Kingman), School Improvement Bonds (Project of 2006), Series C, 5%, 7/01/26 (c)

 

 

200

 

 

207,866

 

 

 

Salt Verde Financial Corp., Arizona, Senior Gas Revenue Bonds, 5%, 12/01/32

 

 

1,500

 

 

1,219,980

 

 

 

Salt Verde Financial Corp., Arizona, Senior Gas Revenue Bonds, 5%, 12/01/37

 

 

2,065

 

 

1,643,017

 

 

 

San Luis, Arizona, Facilities Development Corp., Senior Lien Revenue Bonds (Regional Detention Center Project), 6.25%, 5/01/15

 

 

300

 

 

270,357

 

 

 

San Luis, Arizona, Facilities Development Corp., Senior Lien Revenue Bonds (Regional Detention Center Project), 7%, 5/01/20

 

 

300

 

 

267,381

 

 

 

San Luis, Arizona, Facilities Development Corp., Senior Lien Revenue Bonds (Regional Detention Center Project), 7.25%, 5/01/27

 

 

600

 

 

518,280

 

 

 

University Medical Center Corp. of Arizona, Hospital Revenue Bonds, 6.50%, 7/01/39

 

 

500

 

 

499,960

 

 

 

 

 

 

 

 




 

 

 

 

 

 

 

 

9,184,762

 











California - 13.0%

 

California County Tobacco Securitization Agency, Tobacco Revenue Bonds (Stanislaus County Tobacco Funding Corp.), Sub-Series C, 6.30%, 6/01/55 (d)

 

 

4,500

 

 

37,350

 

 

 

California HFA, Home Mortgage Revenue Bonds, AMT, Series G, 5.05%, 2/01/29

 

 

2,835

 

 

2,346,388

 

 

 

California State Department of Veteran Affairs, Home Purchase Revenue Bonds, AMT, Series B, 5.25%, 12/01/37

 

 

5,000

 

 

4,392,350

 

 

 

California State, GO, 5.75%, 4/01/31

 

 

2,000

 

 

2,028,320

 

 

 

California State, GO, 6.50%, 4/01/33

 

 

1,950

 

 

2,119,650

 

 

 

California State, GO, Refunding, AMT, 5.05%, 12/01/36

 

 

1,000

 

 

852,590

 

 

 

Carlsbad, California, Unified School District, GO, Series B, 5.45%, 5/01/34 (e)(f)

 

 

1,000

 

 

558,500

 

 

 

Dinuba, California, Unified School District, GO (Election of 2006), 5.625%, 8/01/31 (b)

 

 

250

 

 

254,730

 

 

 

Dinuba, California, Unified School District, GO (Election of 2006), 5.75%, 8/01/33 (b)

 

 

500

 

 

509,985

 


 


Portfolio Abbreviations


 

To simplify the listings of portfolio holdings in the Schedule of Investments, the names and descriptions of many of the securities have been abbreviated according to the list below.


 

 

AMT

Alternative Minimum Tax (subject to)

CABS

Capital Appreciation Bonds

EDA

Economic Development Authority

EDR

Economic Development Revenue Bonds

GO

General Obligation Bonds

HFA

Housing Finance Agency

IDA

Industrial Development Authority

IDR

Industrial Development Revenue Bonds

M/F

Multi-Family

PILOT

Payment in Lieu of Taxes

1


 

 

BlackRock Municipal Bond Trust

 

 

 

Schedule of Investments May 31, 2009 (Unaudited)

(Percentages shown are based on Net Assets)


 

 

 

 

 

 

 

 

 

 











State

 

Municipal Bonds

 

Par
(000)

 

Value

 











 

 

San Diego, California, Community College District, GO (Election of 2002), CABS, 6.006%, 8/01/19 (f)

 

$

2,800

 

$

1,552,040

 

 

 

University of California Revenue Bonds, Series B, 4.75%, 5/15/38

 

 

1,160

 

 

1,087,233

 

 

 

Val Verde, California, Unified School District Financing Authority, Special Tax Refunding Bonds, Junior Lien, 6.25%, 10/01/28

 

 

1,585

 

 

1,430,463

 

 

 

 

 

 

 

 




 

 

 

 

 

 

 

 

17,169,599

 











Colorado - 2.1%

 

Colorado Health Facilities Authority Revenue Bonds (Catholic Health Initiatives), Series D, 6.25%, 10/01/33

 

 

1,070

 

 

1,157,130

 

 

 

Colorado Health Facilities Authority, Revenue Refunding Bonds (Poudre Valley Health Care), Series B, 5.25%, 3/01/36 (b)

 

 

1,085

 

 

1,039,810

 

 

 

Colorado Springs, Colorado, Utilities System Improvement Revenue Bonds, Subordinate Lien, Series C, 5%, 11/15/45 (b)

 

 

635

 

 

626,593

 

 

 

 

 

 

 

 




 

 

 

 

 

 

 

 

2,823,533

 











District of Columbia - 8.6%

 

District of Columbia, Revenue Refunding Bonds (Friendship Public Charter School, Inc.), 5.25%, 6/01/33 (g)

 

 

595

 

 

351,580

 

 

 

District of Columbia, Tax Increment Revenue Bonds (Gallery Place Project), 5.40%, 7/01/31 (b)

 

 

6,000

 

 

6,081,000

 

 

 

District of Columbia Tobacco Settlement Financing Corp., Asset- Backed Revenue Refunding Bonds, 6.75%, 5/15/40

 

 

5,580

 

 

4,916,371

 

 

 

 

 

 

 

 




 

 

 

 

 

 

 

 

11,348,951

 











Florida - 15.2%

 

Martin County, Florida, IDA, IDR, Refunding (Indiantown Cogeneration Project), AMT, Series A, 7.875%, 12/15/25

 

 

1,500

 

 

1,448,700

 

 

 

Miami Beach, Florida, Health Facilities Authority, Hospital Revenue Refunding Bonds (Mount Sinai Medical Center of Florida), 6.75%, 11/15/21

 

 

2,420

 

 

2,037,592

 

 

 

Orange County, Florida, Health Facilities Authority, Hospital Revenue Bonds (Adventist Health System), 5.625%, 11/15/12 (a)

 

 

7,760

 

 

8,697,718

 

 

 

Palm Beach County, Florida, HFA, M/F Housing Revenue Bonds (Indian Trace Apartment Project), AMT, Series A, 5.625%, 1/01/44 (b)

 

 

7,255

 

 

7,161,991

 

 

 

Stevens Plantation Community Development District, Florida, Special Assessment Revenue Bonds, Series A, 7.10%, 5/01/35

 

 

955

 

 

676,933

 

 

 

 

 

 

 

 




 

 

 

 

 

 

 

 

20,022,934

 











Georgia - 4.0%

 

Atlanta, Georgia, Water and Wastewater Revenue Bonds, 5%, 11/01/37 (b)

 

 

5,000

 

 

4,895,800

 

 

 

Main Street Natural Gas, Inc., Georgia, Gas Project Revenue Bonds, Series A, 6.375%, 7/15/38 (h)(i)

 

 

1,000

 

 

405,000

 

 

 

 

 

 

 

 




 

 

 

 

 

 

 

 

5,300,800

 











Idaho - 1.9%

 

Idaho HFA, Grant and Revenue Anticipation Bonds (Federal Highway Trust Fund), Series A, 5%, 7/15/27

 

 

600

 

 

611,916

 

 

 

Idaho Health Facilities Authority, Revenue Refunding Bonds (Trinity Health Group), Series B, 6.25%, 12/01/33

 

 

1,750

 

 

1,855,455

 

 

 

 

 

 

 

 




 

 

 

 

 

 

 

 

2,467,371

 











Illinois - 9.0%

 

Bolingbrook, Illinois, GO, Refunding, Series B, 6.22%, 1/01/36 (d)(j)(k)

 

 

23,065

 

 

4,474,379

 

 

 

CenterPoint Intermodal Center Program Trust, Illinois, Tax Allocation Bonds, Class A, 10%, 6/15/23 (l)

 

 

1,150

 

 

909,650

 

2


 

 

BlackRock Municipal Bond Trust

 

 

 

Schedule of Investments May 31, 2009 (Unaudited)

(Percentages shown are based on Net Assets)


 

 

 

 

 

 

 

 

 

 











State

 

Municipal Bonds

 

Par
(000)

 

Value

 











 

 

Illinois Health Facilities Authority, Revenue Refunding Bonds (Lake Forest Hospital), Series A, 5.75%, 7/01/29

 

$

6,000

 

$

5,600,580

 

 

 

Illinois State Finance Authority Revenue Bonds (Friendship Village of Schaumburg), Series A, 5.625%, 2/15/37

 

 

420

 

 

279,224

 

 

 

Illinois State Finance Authority Revenue Bonds (Monarch Landing, Inc. Project), Series A, 7%, 12/01/37

 

 

720

 

 

512,323

 

 

 

Illinois State Finance Authority, Student Housing Revenue Bonds (MJH Education Assistance IV LLC), Sub-Series B, 5.375%, 6/01/35 (h)(i)

 

 

425

 

 

41,811

 

 

 

 

 

 

 

 




 

 

 

 

 

 

 

 

11,817,967

 











Indiana - 1.4%

 

Bloomington, Indiana, M/F Housing Revenue Bonds (Canterbury House Apartments), AIG SunAmerica, Inc., Pass-Through Certificates of Beneficial Ownership, AMT, Series 1, 5.90%, 12/01/34

 

 

1,880

 

 

1,910,099

 











Kansas - 2.9%

 

Wichita, Kansas, Airport Authority, Airport Facilities Revenue Bonds (Cessna Citation Service Center), AMT, Series A, 6.25%, 6/15/32

 

 

5,000

 

 

3,809,550

 











Kentucky - 0.4%

 

Kentucky Economic Development Financing Authority, Louisville Arena Project Revenue Bonds (Louisville Arena Authority, Inc.), Sub- Series A-1, 6%, 12/01/38 (c)

 

 

500

 

 

516,490

 











Louisiana - 0.6%

 

East Baton Rouge, Louisiana, Sewerage Commission, Revenue Refunding Bonds, Series A, 5.25%, 2/01/39

 

 

750

 

 

752,707

 











Maryland - 3.2%

 

Frederick County, Maryland, Special Obligation Tax Bonds (Urbana Community Development Authority), Series B, 6.25%, 7/01/30

 

 

2,903

 

 

2,074,164

 

 

 

Maryland State Community Development Administration, Department of Housing and Community Development, Residential Revenue Refunding Bonds, AMT, Series L, 4.95%, 9/01/38

 

 

1,645

 

 

1,483,148

 

 

 

Maryland State Health and Higher Educational Facilities Authority, Mortgage Revenue Refunding Bonds (Western Maryland Health System), 4.375%, 7/01/36 (j)(m)

 

 

750

 

 

662,572

 

 

 

 

 

 

 

 




 

 

 

 

 

 

 

 

4,219,884

 











Michigan - 3.3%

 

Michigan State Building Authority, Revenue Refunding Bonds (Facilities Program), Series I, 6.25%, 10/15/38

 

 

1,250

 

 

1,350,012

 

 

 

Michigan State Hospital Finance Authority, Revenue Refunding Bonds (Henry Ford Health System), Series A, 5.25%, 11/15/46

 

 

1,065

 

 

833,948

 

 

 

Royal Oak, Michigan, Hospital Finance Authority, Hospital Revenue Refunding Bonds (William Beaumont Hospital), 8.25%, 9/01/39

 

 

1,950

 

 

2,194,374

 

 

 

 

 

 

 

 




 

 

 

 

 

 

 

 

4,378,334

 











Minnesota - 4.4%

 

Minneapolis, Minnesota, Health Care System, Revenue Refunding Bonds (Fairview Health Services), Series B, 6.50%, 11/15/38 (c)

 

 

5,350

 

 

5,822,726

 











Mississippi - 3.3%

 

Mississippi Development Bank, Special Obligation Revenue Bonds (Jackson County Limited Tax Note), 5.50%, 7/01/32 (c)

 

 

1,750

 

 

1,781,097

 

 

 

University of Southern Mississippi Education Building Corp. Revenue Bonds (Campus Facilities Improvements Project), 5.375%, 9/01/36

 

 

2,500

 

 

2,558,175

 

 

 

 

 

 

 

 




 

 

 

 

 

 

 

 

4,339,272

 











Multi-State - 8.7%

 

Charter Mac Equity Issuer Trust, 7.20%, 10/31/52 (l)(n)

 

 

10,500

 

 

11,408,355

 











Nebraska - 1.2%

 

Omaha Public Power District, Nebraska, Electric System Revenue Bonds, Series A, 4.75%, 2/01/44

 

 

1,760

 

 

1,638,578

 











3


 

 

BlackRock Municipal Bond Trust

 

 

 

Schedule of Investments May 31, 2009 (Unaudited)

(Percentages shown are based on Net Assets)


 

 

 

 

 

 

 

 

 

 











State

 

Municipal Bonds

 

Par
(000)

 

Value

 











Nevada - 1.5%

 

Clark County, Nevada, EDR, Refunding (Alexander Dawson School of Nevada Project), 5%, 5/15/29

 

$

1,325

 

$

1,242,241

 

 

 

Las Vegas, Nevada, Special Improvement District Number 809 Revenue Bonds (Summerlin Area), 5.65%, 6/01/23

 

 

1,345

 

 

760,369

 

 

 

 

 

 

 

 




 

 

 

 

 

 

 

 

2,002,610

 











New Jersey - 15.2%

 

Middlesex County, New Jersey, Improvement Authority, Subordinate Revenue Bonds (Heldrich Center Hotel/Conference Project), Series B, 6.25%, 1/01/37

 

 

915

 

 

467,721

 

 

 

New Jersey EDA, Cigarette Tax Revenue Bonds, 5.50%, 6/15/24

 

 

3,710

 

 

3,133,095

 

 

 

New Jersey EDA, Cigarette Tax Revenue Bonds, 5.50%, 6/15/31 (o)

 

 

1,500

 

 

1,170,825

 

 

 

New Jersey EDA, EDR, Refunding (Kapkowski Road Landfill Reclamation Improvement District Project), 6.50%, 4/01/28

 

 

7,500

 

 

6,054,225

 

 

 

New Jersey EDA, First Mortgage Revenue Refunding Bonds (The Winchester Gardens at Ward Homestead Project), Series A, 5.80%, 11/01/31

 

 

1,500

 

 

1,222,350

 

 

 

New Jersey EDA, Motor Vehicle Surcharge Revenue Bonds, Series A, 5%, 7/01/27 (j)

 

 

1,000

 

 

997,600

 

 

 

New Jersey EDA, School Facilities Construction, Revenue Refunding Bonds, Series AA, 5.50%, 12/15/29 (e)

 

 

250

 

 

258,572

 

 

 

New Jersey EDA, Special Facility Revenue Bonds (Continental Airlines Inc. Project), AMT, 7.20%, 11/15/30

 

 

3,000

 

 

2,604,720

 

 

 

New Jersey Health Care Facilities Financing Authority Revenue Bonds (Virtua Health), 5.50%, 7/01/38 (c)

 

 

1,500

 

 

1,489,155

 

 

 

New Jersey State Educational Facilities Authority, Revenue Refunding Bonds (University of Medicine and Dentistry), Series B, 7.125%, 12/01/23

 

 

630

 

 

669,104

 

 

 

New Jersey State Educational Facilities Authority, Revenue Refunding Bonds (University of Medicine and Dentistry), Series B, 7.50%, 12/01/32

 

 

800

 

 

831,928

 

 

 

New Jersey State Housing and Mortgage Finance Agency Revenue Bonds, Series AA, 6.50%, 10/01/38

 

 

1,000

 

 

1,073,690

 

 

 

 

 

 

 

 




 

 

 

 

 

 

 

 

19,972,985

 











New York - 12.7%

 

Albany, New York, IDA, Civic Facility Revenue Bonds (New Covenant Charter School Project), Series A, 7%, 5/01/35

 

 

455

 

 

286,008

 

 

 

Hudson Yards Infrastructure Corp., New York, Revenue Bonds, Series A, 5%, 2/15/47 (k)

 

 

1,000

 

 

847,400

 

 

 

Long Island Power Authority, New York, Electric System Revenue Bonds, Series C, 5.25%, 9/01/29 (p)

 

 

1,500

 

 

1,533,810

 

 

 

Long Island Power Authority, New York, Electric System Revenue Refunding Bonds, Series A, 6.25%, 4/01/33

 

 

300

 

 

333,846

 

 

 

Metropolitan Transportation Authority, New York, Dedicated Tax Fund Revenue Bonds, Series B, 5%, 11/15/34

 

 

800

 

 

797,696

 

 

 

Metropolitan Transportation Authority, New York, Service Contract Revenue Refunding Bonds, Series A, 5%, 7/01/30 (q)

 

 

760

 

 

762,766

 

 

 

New York City, New York, City Housing Development Corp., M/F Housing Revenue Bonds, AMT, Series A, 5.50%, 11/01/34

 

 

3,000

 

 

2,884,800

 

 

 

New York City, New York, City IDA, PILOT Revenue Bonds (Queens Baseball Stadium Project), 6.50%, 1/01/46 (c)

 

 

700

 

 

769,377

 

4


 

 

BlackRock Municipal Bond Trust

 

 

 

Schedule of Investments May 31, 2009 (Unaudited)

(Percentages shown are based on Net Assets)


 

 

 

 

 

 

 

 

 

 











State

 

Municipal Bonds

 

Par
(000)

 

 

Value

 











 

 

New York City, New York, City IDA, Special Facility Revenue Bonds (Continental Airlines Inc. Project), AMT, 7.75%, 8/01/31

 

$

3,165

 

$

2,929,271

 

 

 

New York City, New York, City Municipal Water Finance Authority, Second General Resolution, Water and Sewer System Revenue Bonds, Series FF-2, 5.50%, 6/15/40

 

 

400

 

 

420,632

 

 

 

New York City, New York, City Municipal Water Finance Authority, Water and Sewer System Revenue Bonds, Series A, 5.75%, 6/15/40

 

 

450

 

 

482,594

 

 

 

New York Liberty Development Corp. Revenue Bonds (Goldman Sachs Headquarters), 5.25%, 10/01/35

 

 

1,500

 

 

1,391,085

 

 

 

New York State Dormitory Authority, Non-State Supported Debt Revenue Bonds (Rochester Institute of Technology), Series A, 6%, 7/01/33

 

 

1,000

 

 

1,054,340

 

 

 

New York State Dormitory Authority, State Personal Income Tax Revenue Bonds (Education), Series A, 5%, 3/15/38

 

 

1,250

 

 

1,253,750

 

 

 

Port Authority of New York and New Jersey, Consolidated Revenue Refunding Bonds, AMT, 152nd Series, 5.75%, 11/01/30

 

 

1,000

 

 

1,015,490

 

 

 

 

 

 

 

 




 

 

 

 

 

 

 

 

16,762,865

 











North Carolina - 2.5%

 

Gaston County, North Carolina, Industrial Facilities and Pollution Control Financing Authority, Revenue Bonds (National Gypsum Company Project), AMT, 5.75%, 8/01/35

 

 

2,945

 

 

1,429,415

 

 

 

North Carolina Medical Care Commission, Health Care Facilities Revenue Bonds (WakeMed), Series A, 5.875%, 10/01/38 (c)

 

 

1,000

 

 

1,027,750

 

 

 

North Carolina Medical Care Commission, Health Care Facilities, Revenue Refunding Bonds (University Health System), Series D, 6.25%, 12/01/33

 

 

800

 

 

852,488

 

 

 

 

 

 

 

 




 

 

 

 

 

 

 

 

3,309,653

 











Ohio - 0.7%

 

Ohio State Air Quality Development Authority, Revenue Refunding Bonds (Dayton Power and Light Company Project), Series B, 4.80%, 1/01/34 (k)(r)

 

 

900

 

 

904,680

 











Oklahoma - 1.2%

 

Tulsa, Oklahoma, Municipal Airport Trust, Revenue Refunding Bonds, Series A, 7.75%, 6/01/35

 

 

1,725

 

 

1,580,635

 











Oregon - 1.3%

 

Oregon Health Sciences University, Revenue Refunding Bonds, Series A, 5.75%, 7/01/39 (e)

 

 

1,250

 

 

1,235,813

 

 

 

Portland, Oregon, M/F Housing Revenue Bonds (Pacific Tower Apartments), AIG SunAmerica, Inc., Pass-Through Certificates of Beneficial Ownership, AMT, Series 6, 6.05%, 11/01/34

 

 

530

 

 

532,014

 

 

 

 

 

 

 

 




 

 

 

 

 

 

 

 

1,767,827

 











Pennsylvania - 1.4%

 

Pennsylvania Economic Development Financing Authority, Exempt Facilities Revenue Bonds (Reliant Energy), AMT, Series A, 6.75%, 12/01/36

 

 

2,000

 

 

1,885,580

 











Puerto Rico - 0.7%

 

Puerto Rico Commonwealth Highway and Transportation Authority, Transportation Revenue Refunding Bonds, Series N, 5.25%, 7/01/36 (c)

 

 

900

 

 

882,108

 











Rhode Island - 0.8%

 

Rhode Island State Health and Educational Building Corp., Hospital Revenue Bonds (Lifespan Obligation Group), Series A, 7%, 5/15/39 (c)

 

 

1,000

 

 

1,082,250

 











Texas - 16.0%

 

Harris County, Texas, Health Facilities Development Corp., Hospital Revenue Refunding Bonds (Memorial Hermann Healthcare System), Series B, 7.125%, 12/01/31

 

 

500

 

 

538,425

 

5


 

 

BlackRock Municipal Bond Trust

 

 

 

Schedule of Investments May 31, 2009 (Unaudited)

(Percentages shown are based on Net Assets)


 

 

 

 

 

 

 

 

 

 











State

 

Municipal Bonds

 

Par
(000)

 

Value

 











 

 

Harris County, Texas, Health Facilities Development Corp., Hospital Revenue Refunding Bonds (Memorial Hermann Healthcare System), Series B, 7.25%, 12/01/35

 

$

1,750

 

$

1,885,695

 

 

 

Harris County-Houston Sports Authority, Texas, Revenue Refunding Bonds, Senior Lien, Series G, 6.163%, 11/15/41 (d)(j)

 

 

11,690

 

 

916,145

 

 

 

Lower Colorado River Authority, Texas, Revenue Refunding Bonds, 5%, 5/15/13 (a)(j)

 

 

15

 

 

16,901

 

 

 

San Antonio Energy Acquisition Public Facilities Corp., Texas, Gas Supply Revenue Bonds, 5.50%, 8/01/23

 

 

1,775

 

 

1,637,846

 

 

 

San Antonio Energy Acquisition Public Facilities Corp., Texas, Gas Supply Revenue Bonds, 5.50%, 8/01/24

 

 

1,620

 

 

1,500,217

 

 

 

Texas M/F Housing Revenue Bonds (Copperwood Ranch Apartments), AIG SunAmerica, Inc., Pass-Through Certificates of Beneficial Ownership, AMT, Series 9, 5.95%, 11/01/35

 

 

2,480

 

 

2,523,549

 

 

 

Texas State Turnpike Authority, Central Texas Turnpike System Revenue Bonds, 6.084%, 8/15/35 (d)(q)

 

 

60,000

 

 

10,267,200

 

 

 

Texas State Turnpike Authority, Central Texas Turnpike System Revenue Bonds, First Tier, Series A, 5%, 8/15/42 (q)

 

 

2,115

 

 

1,782,628

 

 

 

 

 

 

 

 




 

 

 

 

 

 

 

 

21,068,606

 











Washington - 2.0%

 

Washington State Health Care Facilities Authority Revenue Bonds (MultiCare Health System), Series B, 6%, 8/15/39 (c)

 

 

1,400

 

 

1,427,034

 

 

 

Washington State Health Care Facilities Authority, Revenue Refunding Bonds (Providence Health System), Series A, 4.625%, 10/01/34 (j)(k)

 

 

1,325

 

 

1,176,521

 

 

 

 

 

 

 

 




 

 

 

 

 

 

 

 

2,603,555

 











Wisconsin - 1.0%

 

Wisconsin State Health and Educational Facilities Authority Revenue Bonds (Aurora Health Care, Inc.), 6.40%, 4/15/33

 

 

1,350

 

 

1,283,486

 











 

 

Total Municipal Bonds - 153.5%

 

 

 

 

 

202,284,627

 











 

 

Municipal Bonds Transferred to Tender Option Bond Trusts (s)

 

 

 

 

 

 

 











Colorado - 2.8%

 

Colorado Health Facilities Authority Revenue Bonds (Catholic Health), Series C-7, 5%, 9/01/36 (b)

 

 

3,750

 

 

3,641,062

 











Massachusetts - 1.1%

 

Massachusetts State Water Resource Authority, General Revenue Refunding Bonds, Series A, 5%, 8/01/41

 

 

1,450

 

 

1,429,352

 











New York - 1.7%

 

New York State Dormitory Authority, Non-State Supported Debt Revenue Bonds (New York University), Series A, 5%, 7/01/38

 

 

2,199

 

 

2,195,919

 











Ohio - 2.4%

 

Montgomery County, Ohio, Revenue Bonds (Catholic Health Initiatives), Series C-1, 5%, 10/01/41 (b)

 

 

1,260

 

 

1,166,962

 

 

 

Ohio State Higher Educational Facilities Commission, Hospital Revenue Bonds (University Hospitals Health System), Series A, 5.25%, 1/01/33

 

 

2,000

 

 

2,008,140

 

 

 

 

 

 

 

 




 

 

 

 

 

 

 

 

3,175,102

 











 

 

Total Municipal Bonds Transferred to Tender Option Bond Trusts - 8.0%

 

 

 

 

 

10,441,435

 











 

 

Total Long-Term Investments
(Cost - $224,234,937) - 161.5%

 

 

 

 

 

212,726,062

 











6


 

 

BlackRock Municipal Bond Trust

 

 

Schedule of Investments May 31, 2009 (Unaudited)

(Percentages shown are based on Net Assets)

 

 

 

 

 

 

 

 

 

 

 









 

 

Short-Term Securities

 

Shares

 

Value

 









Money Market Fund - 2.3%

 

FFI Institutional Tax-Exempt Fund, 0.45% (t)(u)

 

 

3,000,000

 

$

3,000,000

 











 

 

Total Short-Term Securities
(Cost - $3,000,000) - 2.3%

 

 

 

 

 

3,000,000

 











 

 

Total Investments (Cost - $227,234,937*) - 163.8%

 

 

 

 

 

215,726,062

 

 

 

Other Assets Less Liabilities - 1.4%

 

 

 

 

 

1,859,245

 

 

 

Liability for Trust Certificates, Including Interest Expense and Fees Payable - (4.1)%

 

 

 

 

 

(5,337,438

)

 

 

Preferred Shares, at Redemption Value - (61.1)%

 

 

 

 

 

(80,509,376

)

 

 

 

 

 

 

 




 

 

Net Assets Applicable to Common Shares - 100.0%

 

 

 

 

$

131,738,493

 

 

 

 

 

 

 

 





 

 

*

The cost and unrealized appreciation (depreciation) of investments as of May 31, 2009, as computed for federal income tax purposes, were as follows:


 

 

 

 

 

Aggregate cost

 

$

220,431,570

 

 

 




Gross unrealized appreciation

 

$

8,022,752

 

Gross unrealized depreciation

 

 

(18,057,633

)

 

 




Net unrealized depreciation

 

$

(10,034,881

)

 

 





 

 

(a)

US government securities, held in escrow, are used to pay interest on this security as well as to retire the bond in full at the date indicated, typically at a premium to par.

 

 

(b)

FSA Insured.

 

 

(c)

Assured Guaranty Insured.

 

 

(d)

Represents a zero-coupon bond. Rate shown reflects the current yield as of report date.

 

 

(e)

When-issued security.

 

 

(f)

Represents a step-up bond that pays an initial coupon rate for the first period and then a higher coupon rate for the following periods. Rate shown reflects the effective yield as of report date.

 

 

(g)

ACA Insured.

 

 

(h)

Issuer filed for bankruptcy and/or is in default of interest payments.

 

 

(i)

Non-income producing security.

 

 

(j)

NPFGC Insured.

 

 

(k)

FGIC Insured.

 

 

(l)

Security exempt from registration under Rule 144A of the Securities Act of 1933. These securities may be resold in transactions exempt from registration to qualified institutional investors.

 

 

(m)

FHA Insured.

 

 

(n)

Security represents a beneficial interest in a trust. The collateral deposited into the trust is federally tax-exempt revenue bonds issued by various state or local governments, or their respective agencies or authorities. The security is subject to remarketing prior to its stated maturity, and is subject to mandatory redemption at maturity.

 

 

(o)

Radian Insured.

 

 

(p)

CIFG Insured.

 

 

(q)

AMBAC Insured.

 

 

(r)

BHAC Insured.

 

 

(s)

Securities represent bonds transferred to a tender option bond trust in exchange for which the Trust acquired the residual interest certificates. These securities serve as collateral in a financing transaction.

 

 

(t)

Represents the current yield as of report date.

 

 

(u)

Investments in companies considered to be an affiliate of the Trust, for purposes of Section 2(a)(3) of the Investment Company Act of 1940, were as follows:


 

 

 

 

 

 

 








Affiliate

 

Net Activity

 

Income

 








FFI Institutional Tax-Exempt Fund

 

1,099,573

 

$

1,274

 








7


 

BlackRock Municipal Bond Trust

 

Schedule of Investments May 31, 2009 (Unaudited)

 



 

 

 

 

Effective September 1, 2008, the Trust adopted Financial Accounting Standards Board Statement of Financial Accounting Standards No. 157, “Fair Value Measurements” (“FAS 157”). FAS 157 clarifies the definition of fair value, establishes a framework for measuring fair values and requires additional disclosures about the use of fair value measurements. Various inputs are used in determining the fair value of investments, which are as follows:

 

 

 

 

 

 

Level 1 - price quotations in active markets/exchanges for identical securities

 

 

 

 

 

 

Level 2 - other observable inputs (including, but not limited to: quoted prices for similar assets or liabilities in markets that are active, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable for the assets or liabilities (such as interest rates, yield curves, volatilities, prepayment speeds, loss severities, credit risks and default rates) or other market-corroborated inputs)

 

 

 

 

 

 

Level 3 - unobservable inputs based on the best information available in the circumstances, to the extent observable inputs are not available (including the Trust’s own assumptions used in determining the fair value of investments)

 

 

 

 

 

The inputs or methodology used for valuing securities are not necessarily an indication of the risk associated with investing in those securities. For information about the Trust’s policy regarding valuation of investments and other significant accounting policies, please refer to the Trust’s most recent financial statements as contained in its semi-annual report.

 

 

 

 

 

The following table summarizes the inputs used as of May 31, 2009 in determining the fair valuation of the Trust’s investments:


 

 

 

 

 





Valuation
Inputs

 

Investment in
Securities

 





 

 

Assets

 

 

 


 

Level 1

 

$

3,000,000

 

Level 2

 

 

212,726,062

 

Level 3

 

 

 






Total

 

$

215,726,062

 

 

 




8


Item 2 – Controls and Procedures
   

2(a) –

The registrant’s principal executive and principal financial officers or persons performing similar functions have concluded that the registrant’s disclosure controls and procedures (as defined in Rule 30a-3(c) under the Investment Company Act of 1940, as amended (the “1940 Act”)) are effective as of a date within 90 days of the filing of this report based on the evaluation of these controls and procedures required by Rule 30a-3(b) under the 1940 Act and Rule 13(a)-15(b) under the Securities Exchange Act of 1934, as amended.

   

2(b) –

There were no changes in the registrant’s internal control over financial reporting (as defined in Rule 30a-3(d) under the 1940 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 – Attached hereto
   
  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.
   
  BlackRock Municipal Bond Trust
   
 

By:

/s/ Donald C. Burke  
    Donald C. Burke
    Chief Executive Officer of
    BlackRock Municipal Bond Trust
   
  Date: July 15, 2009
   
  Pursuant to the requirements of the Securities 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/ Donald C. Burke  
    Donald C. Burke
    Chief Executive Officer (principal executive officer) of
    BlackRock Municipal Bond Trust
   
  Date: July 15, 2009
   
 

By:

/s/ Neal J. Andrews  
    Neal J. Andrews
    Chief Financial Officer (principal financial officer) of
    BlackRock Municipal Bond Trust
   
  Date: July 15, 2009