BLACKROCK MUNICIPAL BOND TRUST

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: John M. Perlowski, Chief Executive Officer, BlackRock Municipal Bond

            Trust, 55 East 52nd Street, New York, NY 10055

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

Date of fiscal year end: 08/31/2018

Date of reporting period: 11/30/2017


Item 1 – Schedule of Investments

 


Schedule of Investments  (unaudited) 

November 30, 2017

  

BlackRock Municipal Bond Trust (BBK)

(Percentages shown are based on Net Assets)

 

Security   Par
(000)
    Value  

Municipal Bonds — 136.3%

 

Alabama — 0.7%  

Opelika Utilities Board, Refunding RB, 4.00%, 06/01/41

  $ 960     $ 1,006,387  

UAB Medicine Finance Authority, Refunding RB, Series B, 5.00%, 09/01/41

    130       148,060  
   

 

 

 
      1,154,447  
Arizona — 7.5%  

Arizona Health Facilities Authority, Refunding RB, Phoenix Children’s Hospital, Series A, 5.00%, 02/01/42

    2,200       2,340,602  

City of Phoenix Arizona IDA, Refunding RB, Basis Schools, Inc. Projects, 5.00%, 07/01/45(a)

    460       475,208  

County of Pinal Arizona Electric District No.3, Refunding RB:

   

4.75%, 07/01/21(b)

    680       751,631  

4.75%, 07/01/31

    3,070       3,306,942  

Salt Verde Financial Corp., RB, Senior:

   

5.00%, 12/01/32

    1,500       1,809,555  

5.00%, 12/01/37

    2,065       2,514,427  

University Medical Center Corp., RB, 6.50%, 07/01/19(b)

    500       537,215  

University Medical Center Corp., Refunding RB, 6.00%, 07/01/21(b)

    900       1,030,293  
   

 

 

 
      12,765,873  
Arkansas — 2.3%  

City of Benton Arkansas, RB, 4.00%, 06/01/39

    505       530,023  

City of Fort Smith Arkansas Water & Sewer Revenue, Refunding RB, 4.00%, 10/01/40

    840       876,103  

City of Little Rock Arkansas, RB, 4.00%, 07/01/41

    1,835       1,902,638  

County of Pulaski Arkansas Public Facilities Board, RB, 5.00%, 12/01/42

    465       517,680  
   

 

 

 
      3,826,444  
California — 25.5%  

California Health Facilities Financing Authority, RB, Sutter Health, Series B, 5.88%, 08/15/31

    1,900       2,125,359  

Carlsbad California Unified School District, GO, Election of 2006, Series B, 0.00%, 05/01/34(c)

    1,000       1,137,270  

Chaffey Joint Union High School District, GO, Election of 2012, Series C, 5.25%, 08/01/47

    4,955       5,925,090  
Security   Par
(000)
    Value  
California (continued)  

City of San Jose California, Refunding ARB, Norman Y Mineta San Jose International Airport SJC, Series A-1, AMT, 5.75%, 03/01/34

  $ 2,000     $ 2,224,880  

County of Los Angeles Metropolitan Transportation Authority, Refunding RB, Series A, 5.00%, 07/01/38

    3,500       4,162,130  

County of San Diego Regional Airport Authority, RB, Subordinate, Series B, AMT, 5.00%, 07/01/42

    2,405       2,800,502  

Hartnell Community College District California, GO, CAB, Election of 2002, Series D,
0.00%, 08/01/34(c)

    1,650       1,687,637  

Norwalk-La Mirada Unified School District, GO, Refunding, CAB, Election of 2002, Series E (AGC), 0.00%, 08/01/38(d)

    8,000       3,522,240  

Palomar Community College District, GO, CAB, Election of 2006, Series B:

   

0.00%, 08/01/30(d)

    1,500       1,018,740  

0.00%, 08/01/33(d)

    4,000       1,624,920  

0.00%, 08/01/39(c)

    2,605       2,486,472  

San Diego Community College District, GO, CAB, Election of 2002, 0.00%, 08/01/33(c)

    2,800       3,283,280  

State of California, GO, Refunding, Various Purposes, 5.00%, 02/01/38

    3,000       3,385,560  

State of California, GO, Various Purposes:

   

5.75%, 04/01/31

    2,000       2,114,320  

6.00%, 03/01/33

    1,000       1,098,810  

6.50%, 04/01/33

    1,950       2,080,865  

5.50%, 03/01/40

    2,350       2,543,358  
   

 

 

 
      43,221,433  
Colorado — 0.7%  

Colorado Health Facilities Authority, RB, Catholic Health Initiatives, Series D, 6.25%, 10/01/33

    1,070       1,108,691  
   

 

 

 
Connecticut — 0.3%  

Connecticut State Health & Educational Facility Authority, Refunding RB, Lawrence & Memorial Hospital, Series F, 5.00%, 07/01/36

    550       587,350  
   

 

 

 
Delaware — 1.4%  

County of Sussex Delaware, RB, NRG Energy, Inc., Indian River Power LLC Project, 6.00%, 10/01/40

    1,200       1,271,412  
 

 

 

SCHEDULES OF INVESTMENTS      1  


Schedule of Investments  (unaudited) (continued)

November 30, 2017

  

BlackRock Municipal Bond Trust (BBK)

(Percentages shown are based on Net Assets)

 

Security   Par
(000)
    Value  
Delaware (continued)  

Delaware Transportation Authority, RB, U.S. 301 Project, 5.00%, 06/01/55

  $ 950     $ 1,072,550  
   

 

 

 
      2,343,962  
Florida — 3.9%  

Broward County Florida Airport System Revenue, RB, AMT, 5.00%, 10/01/42

    345       398,875  

Capital Trust Agency Inc., RB, M/F Housing, The Gardens Apartment Project, Series A, 4.75%, 07/01/40

    600       627,576  

County of Miami-Dade Florida, RB, AMT, Seaport Department, Series B, 6.00%, 10/01/31

    4,135       4,841,465  

County of Orange Florida Health Facilities Authority, Refunding RB, Mayflower Retirement Center, 5.00%, 06/01/36

    125       132,165  

Stevens Plantation Community Development District, RB, Special Assessment, Series A, 7.10%, 05/01/35(e)(f)

    860       602,000  
   

 

 

 
      6,602,081  
Hawaii — 0.3%  

State of Hawaii Department of Budget & Finance, Refunding RB, Special Purpose, Senior Living, Kahala Nui, 5.25%, 11/15/37

    400       441,668  
   

 

 

 
Idaho — 0.3%  

Idaho Health Facilities Authority, RB, St. Lukes Health System Project, Series A, 5.00%, 03/01/39

    500       547,070  
   

 

 

 
Illinois — 8.1%  

Chicago Board of Education, GO, Series H, 5.00%, 12/01/36

    235       240,382  

Chicago Board of Education, GO, Refunding, Dedicated Revenues:

   

Series C, 5.00%, 12/01/25

    425       443,479  

Series C, 5.00%, 12/01/34

    235       240,757  

Series F, 5.00%, 12/01/23

    310       326,033  

City of Chicago Illinois, Refunding ARB, O’Hare International Airport Passenger Facility Charge, Series B, AMT, 4.00%, 01/01/29

    1,600       1,659,040  

City of Chicago Illinois, Refunding GARB, O’Hare International Airport, Senior Lien:

   

Series B, 5.00%, 01/01/35

    2,000       2,310,520  

Series B, 5.00%, 01/01/41

    2,000       2,263,460  

Series C, 5.00%, 01/01/38

    1,000       1,134,790  
Security   Par
(000)
    Value  
Illinois (continued)  

City of Chicago Illinois Midway International Airport, Refunding GARB, 2nd Lien, Series A, AMT, 5.00%, 01/01/41

  $ 870     $ 962,394  

City of Chicago Illinois Transit Authority, RB, Sales Tax Receipts, 5.25%, 12/01/40

    665       712,867  

Illinois Finance Authority, Refunding RB:

   

OSF Healthcare System, 6.00%, 05/15/39

    295       315,308  

Roosevelt University Project, 6.50%, 04/01/44

    1,000       1,067,360  

Metropolitan Pier & Exposition Authority, RB, McCormick Place Expansion Project Bonds, Series A, 5.00%, 06/15/57(g)

    645       691,769  

Railsplitter Tobacco Settlement Authority, RB, 6.00%, 06/01/28

    1,150       1,292,795  
   

 

 

 
      13,660,954  
Kansas — 2.6%  

County of Seward Kansas Unified School District No. 480 Liberal, GO, Refunding:

   

5.00%, 09/01/22(b)

    3,280       3,625,843  

5.00%, 09/01/39

    720       822,132  
   

 

 

 
      4,447,975  
Kentucky — 3.7%  

County of Boyle Kentucky, Refunding RB, Centre College of Kentucky, 5.00%, 06/01/37

    2,500       2,822,175  

Kentucky Economic Development Finance Authority, RB, Catholic Health Initiatives, Series A, 5.38%, 01/01/40

    1,830       1,989,118  

Kentucky Public Transportation Infrastructure Authority, RB, Downtown Crossing Project, Convertible CAB, 1st Tier, Series C(c):

   

0.00%, 07/01/34

    500       463,765  

0.00%, 07/01/39

    830       761,143  

0.00%, 07/01/43

    270       247,998  
   

 

 

 
      6,284,199  
Louisiana — 1.5%  

City of Alexandria Louisiana Utilities, RB, 5.00%, 05/01/39

    860       955,340  
 

 

 

2    2017 BLACKROCK QUARTERLY REPORT TO SHAREHOLDERS


Schedule of Investments  (unaudited) (continued)

November 30, 2017

  

BlackRock Municipal Bond Trust (BBK)

(Percentages shown are based on Net Assets)

 

Security   Par
(000)
    Value  
Louisiana (continued)  

Louisiana Local Government Environmental Facilities & Community Development Authority, RB, Westlake Chemical Corp. Project, Series A-1, 6.50%, 11/01/35

  $ 1,050     $ 1,183,780  

Louisiana Public Facilities Authority, RB, Belle Chasse Educational Foundation Project, 6.50%, 05/01/31

    400       431,416  
   

 

 

 
      2,570,536  
Maryland — 0.2%  

County of Anne Arundel Maryland Consolidated, RB, Special Taxing District, Villages at Two Rivers Project:

   

5.13%, 07/01/36

    170       172,407  

5.25%, 07/01/44

    170       171,979  
   

 

 

 
      344,386  
Massachusetts — 2.1%  

Massachusetts Development Finance Agency, RB, Emerson College Issue, Series A:

   

5.00%, 01/01/47

    630       709,701  

5.25%, 01/01/42

    565       649,824  

Massachusetts Development Finance Agency, Refunding RB, International Charter School, 5.00%, 04/15/40

    400       435,656  

Massachusetts Port Authority, Refunding ARB, Series A, AMT, 5.00%, 07/01/42

    1,500       1,725,135  
   

 

 

 
      3,520,316  
Michigan — 5.1%  

Michigan Finance Authority, RB, Detroit Water & Sewage Disposal System, Senior Lien, Series 2014 C-2, AMT, 5.00%, 07/01/44

    240       257,083  

Michigan Finance Authority, Refunding RB, Henry Ford Health System, 5.00%, 11/15/41

    5,560       6,201,235  

Michigan State Hospital Finance Authority, Refunding RB, Trinity Health Credit Group, Series C, 4.00%, 12/01/32

    2,100       2,168,208  
Security   Par
(000)
    Value  
Michigan (continued)  

State of Michigan Building Authority, Refunding RB, Facilities Program, Series I, 6.25%, 10/15/38

  $ 40     $ 41,642  
   

 

 

 
      8,668,168  
Minnesota — 4.5%  

City of Maple Grove Minnesota, Refunding RB, Maple Grove Hospital, Corp., 4.00%, 05/01/37

    880       899,369  

City of Minneapolis Minnesota, Refunding RB, Fairview Health Services, Series B (AGC), 6.50%, 11/15/38

    3,890       4,070,302  

Minneapolis-St. Paul Metropolitan Airports Commission, Refunding ARB, Sub Series D, AMT, 5.00%, 01/01/41

    290       329,115  

Minnesota Higher Education Facilities Authority, RB:

   

Augsburg College, Series B, 4.25%, 05/01/40

    1,185       1,186,019  

College of St. Benedict, Series 8-K, 5.00%, 03/01/37

    660       750,928  

College of St. Benedict, Series 8-K, 4.00%, 03/01/43

    385       391,206  
   

 

 

 
      7,626,939  
Mississippi — 1.9%  

County of Warren Mississippi, RB, Gulf Opportunity Zone Bonds, International Paper Co. Project, Series A, 5.38%, 12/01/35

    400       446,656  

Mississippi Development Bank, RB, Special Obligation:

   

CAB, Hinds Community College District (AGM), 5.00%, 04/01/21(b)

    845       935,626  

County of Jackson Limited Tax Note (AGC), 5.50%, 07/01/32

    1,750       1,850,503  
   

 

 

 
      3,232,785  
Missouri — 2.6%  

Missouri Development Finance Board, RB, Annual Appropriation Sewer System, Series B, 5.00%, 11/01/41

    900       979,758  

Missouri State Health & Educational Facilities Authority, RB:

   

A.T. Still University of Health Sciences, 5.25%, 10/01/31

    500       552,925  

A.T. Still University of Health Sciences, 4.25%, 10/01/32

    320       337,715  

A.T. Still University of Health Sciences, 5.00%, 10/01/39

    500       556,735  
 

 

 

SCHEDULES OF INVESTMENTS      3  


Schedule of Investments  (unaudited) (continued)

November 30, 2017

  

BlackRock Municipal Bond Trust (BBK)

(Percentages shown are based on Net Assets)

 

Security   Par
(000)
    Value  
Missouri (continued)  

Heartland Regional Medical Center, 4.13%, 02/15/43

  $ 300     $ 310,005  

University of Central Missouri, Series C-2, 5.00%, 10/01/34

    1,000       1,130,070  

Missouri State Health & Educational Facilities Authority, Refunding RB, Kansas City University of Medicine and Biosciences, Series A, 5.00%, 06/01/42

    540       613,813  
   

 

 

 
      4,481,021  
Montana — 0.7%  

County of Cascade Montana High School District A Great Falls, GO:

   

4.00%, 07/01/34

    570       618,114  

4.00%, 07/01/35

    550       594,044  
   

 

 

 
      1,212,158  
Nebraska — 1.1%  

Central Plains Energy Project Nebraska, RB, Gas Project No. 3, 5.00%, 09/01/42

    600       653,754  

County of Douglas Nebraska Hospital Authority No. 3, Refunding RB, Health Facilities Nebraska Methodist Health System, 5.00%, 11/01/45

    400       443,512  

Nebraska Public Power District, Refunding RB, Series A:

   

5.00%, 01/01/32

    250       276,827  

4.00%, 01/01/44

    400       408,900  
   

 

 

 
      1,782,993  
Nevada — 1.2%  

City of Las Vegas Nevada, RB, Special Assessment, No. 809 Summerlin Area, 5.65%, 06/01/23

    995       1,009,646  

County of Clark Nevada, Refunding ARB, Department of Aviation, Subordinate Lien, Series A-2, 4.25%, 07/01/36

    1,000       1,058,750  
   

 

 

 
      2,068,396  
New Jersey — 15.2%  

New Jersey EDA, RB:

   

Continental Airlines, Inc. Project, Series B, AMT, 5.63%, 11/15/30

    660       748,994  

Goethals Bridge Replacement Project AMT (AGM), 5.13%, 07/01/42

    200       221,680  

School Facilities Construction, Series UU, 5.00%, 06/15/40

    425       451,971  
Security   Par
(000)
    Value  
New Jersey (continued)  

New Jersey EDA, Refunding RB:

   

Series B, 5.50%, 06/15/30

  $ 2,500     $ 2,896,825  

Special Assessment, Kapkowski Road Landfill Project, 6.50%, 04/01/28

    7,500       8,846,325  

New Jersey Educational Facilities Authority, Refunding RB, College of New Jersey, Series G, 3.50%, 07/01/31

    900       910,152  

New Jersey Health Care Facilities Financing Authority, Refunding RB, St. Barnabas Health Care System, Series A:

   

4.63%, 07/01/21(b)

    510       561,525  

5.63%, 07/01/21(b)

    1,700       1,930,469  

5.00%, 07/01/25

    500       561,495  

New Jersey State Turnpike Authority, RB, Series E, 5.00%, 01/01/45

    1,860       2,100,572  

New Jersey Transportation Trust Fund Authority, RB:

   

CAB, Transportation System, Series A, 0.00%, 12/15/35(d)

    1,000       450,640  

Transportation Program, Series AA, 5.00%, 06/15/45

    900       961,632  

Transportation Program, Series AA, 5.00%, 06/15/46

    400       427,124  

New Jersey Turnpike Authority, Refunding RB, Series B, 5.00%, 01/01/40

    1,000       1,169,920  

South Jersey Port Corp., RB, Marine Terminal, Series B, AMT, 5.00%, 01/01/35(g)

    625       675,300  

Tobacco Settlement Financing Corp., Refunding RB, Series 1A, 5.00%, 06/01/41

    3,000       2,887,650  
   

 

 

 
      25,802,274  
New Mexico — 1.1%  

New Mexico Finance Authority, RB, Senior Lien, Series A:

   

3.25%, 06/01/33

    545       552,575  

3.25%, 06/01/34

    840       848,224  

New Mexico Hospital Equipment Loan Council, Refunding RB, Presbyterian Healthcare Services, 5.00%, 08/01/44

    450       508,527  
   

 

 

 
      1,909,326  
New York — 6.6%  

City of New York New York Industrial Development Agency, RB, PILOT (AMBAC), 5.00%, 01/01/39

    925       939,652  
 

 

 

4    2017 BLACKROCK QUARTERLY REPORT TO SHAREHOLDERS


Schedule of Investments  (unaudited) (continued)

November 30, 2017

  

BlackRock Municipal Bond Trust (BBK)

(Percentages shown are based on Net Assets)

 

Security   Par
(000)
    Value  
New York (continued)  

Counties of New York Tobacco Trust IV, Refunding RB, Settlement Pass-Through Turbo, Series A, 6.25%, 06/01/41(a)

  $ 900     $ 929,871  

Erie Tobacco Asset Securitization Corp., Refunding RB, Asset-Backed, Series A, 5.00%, 06/01/45

    1,160       1,105,086  

Hudson Yards Infrastructure Corp., Refunding RB, Series A, 5.00%, 02/15/37

    2,190       2,549,248  

New York Liberty Development Corp., Refunding RB:

   

2nd Priority, Bank of America Tower at One Bryant Park Project, Class 3, 6.38%, 07/15/49

    800       850,304  

3 World Trade Center Project, Class 2, 5.38%, 11/15/40(a)

    405       445,694  

New York Transportation Development Corp., ARB, LaGuardia Airport Terminal B Redevelopment Project, Series A, AMT, 5.00%, 07/01/41

    1,000       1,097,860  

New York Transportation Development Corp., Refunding ARB, American Airlines, Inc., AMT, 5.00%, 08/01/31

    1,295       1,377,582  

Niagara Area Development Corp., Refunding RB, Solid Waste Disposal Facility, Covanta Energy Project, Series A, AMT, 5.25%, 11/01/42(a)

    400       400,256  

Port Authority of New York & New Jersey, Refunding ARB, Consolidated, 206th Series, AMT, 5.00%, 11/15/37

    1,250       1,453,100  
   

 

 

 
      11,148,653  
North Carolina — 0.2%  

North Carolina Medical Care Commission, Refunding RB, The United Methodist Retirement Homes, Series A, 5.00%, 10/01/42(g)

    300       330,345  
   

 

 

 
North Dakota — 0.3%  

County of Burleigh North Dakota, Refunding RB, St. Alexius Medical Center Project, Series A, 5.00%, 07/01/21(b)

    480       532,066  
   

 

 

 
Ohio — 2.4%  

Buckeye Tobacco Settlement Financing Authority, RB, Asset-Backed, Senior Turbo Term, Series A-2, 6.50%, 06/01/47

    2,000       1,982,260  
Security   Par
(000)
    Value  
Ohio (continued)  

City of Dayton Ohio Airport Revenue, Refunding ARB, James M. Cox Dayton International Airport, Series A AMT (AGM), , 4.00%, 12/01/32

  $ 2,000     $ 2,057,160  
   

 

 

 
      4,039,420  
Oklahoma — 1.8%  

Norman Oklahoma Regional Hospital Authority, Refunding RB, 4.00%, 09/01/37

    1,275       1,310,011  

Oklahoma City Public Property Authority, Refunding RB, 5.00%, 10/01/39

    720       825,142  

Oklahoma Development Finance Authority, RB, Provident Oklahoma Education Resources, Inc., Cross Village Student Housing Project, Series A, 5.25%, 08/01/57

    820       902,098  
   

 

 

 
      3,037,251  
Oregon — 1.7%  

County of Lane Oregon School District No. 19 Springfield, GO, CAB, Series B, 0.00%, 06/15/40(d)

    1,000       437,790  

Oregon Health & Science University, RB, Series A, 4.00%, 07/01/37

    675       714,076  

State of Oregon State Facilities Authority, Refunding RB, University of Portland Project, Series A, 5.00%, 04/01/45

    1,475       1,651,174  
   

 

 

 
      2,803,040  
Pennsylvania — 7.8%  

County of Allegheny Pennsylvania IDA, Refunding RB, U.S. Steel Corp. Project, 6.55%, 12/01/27

    1,695       1,765,376  

Delaware River Port Authority, RB:

   

4.50%, 01/01/32

    1,500       1,645,905  

Series D (AGM), 5.00%, 01/01/40

    2,600       2,763,202  

Pennsylvania Turnpike Commission, RB, Sub-Series B-1, 5.00%, 06/01/42

    5,000       5,627,050  

Pottsville Hospital Authority, Refunding RB, Lehigh Valley Health Network, Series B, 5.00%, 07/01/45

    1,250       1,396,938  
   

 

 

 
      13,198,471  
Puerto Rico — 1.0%  

Children’s Trust Fund, Refunding RB, Tobacco Settlement Asset-Backed Bonds:

   

5.50%, 05/15/39

    940       911,208  
 

 

 

SCHEDULES OF INVESTMENTS      5  


Schedule of Investments  (unaudited) (continued)

November 30, 2017

  

BlackRock Municipal Bond Trust (BBK)

(Percentages shown are based on Net Assets)

 

Security   Par
(000)
    Value  
Puerto Rico (continued)  

Children’s Trust Fund, Refunding RB, Tobacco Settlement Asset-Backed Bonds (continued):

   

5.63%, 05/15/43

  $ 890     $ 857,568  
   

 

 

 
      1,768,776  
Rhode Island — 4.6%  

Rhode Island Health & Educational Building Corp., Refunding RB, Series A (AGM), 3.75%, 05/15/32

    1,155       1,188,356  

Rhode Island Turnpike & Bridge Authority, Refunding RB, Series A, 5.00%, 10/01/40

    1,540       1,753,182  

State of Rhode Island, COP, School for the Deaf Project, Series C (AGC), 5.38%, 04/01/19(b)

    900       944,586  

Tobacco Settlement Financing Corp., Refunding RB:

   

Series A, 5.00%, 06/01/40

    1,000       1,068,850  

Series B, 4.50%, 06/01/45

    2,730       2,752,468  
   

 

 

 
      7,707,442  
Tennessee — 2.9%  

Chattanooga Health Educational & Housing Facility Board, RB, Catholic Health Initiatives, Series A, 5.25%, 01/01/40

    1,950       2,108,301  

County of Chattanooga-Hamilton Tennessee Hospital Authority, Refunding RB, Series A, 5.00%, 10/01/44

    875       946,837  

County of Memphis-Shelby Tennessee Sports Authority, Inc., Refunding RB, Memphis Arena Project, Series A, 5.38%, 11/01/28

    275       293,626  

Johnson City Health & Educational Facilities Board, RB, Mountain States Health, Series A, 5.00%, 08/15/42

    800       851,168  

Metropolitan Government of Nashville & Davidson County Health & Educational Facilities Board, RB, Vanderbilt University Medical Center, Series A, 5.00%, 07/01/40

    675       758,471  
   

 

 

 
      4,958,403  
Texas — 8.7%  

County of Harris Texas Houston Sports Authority, Refunding RB, CAB, Senior Lien, Series G (NPFGC), 0.00%, 11/15/41(d)

    11,690       3,638,396  
Security   Par
(000)
    Value  
Texas (continued)  

County of Matagorda Texas Navigation District No. 1, Refunding RB, Central Power & Light Co., Project, Series A, 6.30%, 11/01/29

  $ 1,500     $ 1,626,585  

County of Midland Texas Fresh Water Supply District No. 1, RB, CAB, City of Midland Project, Series A, 0.00%, 09/15/38(d)

    10,760       4,446,247  

Leander ISD, GO, Refunding CAB, Series D (PSF-GTD)(d):

   

0.00%, 08/15/24(b)

    370       192,548  

0.00%, 08/15/35

    3,630       1,750,822  

Red River Texas Education Financing Corp., RB, Texas Christian University Project, 5.25%, 03/15/38

    760       863,162  

Texas Private Activity Bond Surface Transportation Corp., RB, Senior Lien, LBJ Infrastructure Group LLC, 7.00%, 06/30/40

    2,000       2,248,920  
   

 

 

 
      14,766,680  
Utah — 0.2%  

Utah State Charter School Finance Authority, Refunding RB, Mountainville Academy, 4.00%, 04/15/42

    400       409,244  
   

 

 

 
Vermont — 0.8%  

University of Vermont & State Agricultural College, Refunding RB, 4.00%, 10/01/37

    500       523,395  

Vermont Student Assistance Corp., RB, Series A, 4.13%, 06/15/30

    735       763,342  
   

 

 

 
      1,286,737  
Virginia — 2.2%  

Ballston Quarter Community Development Authority, Tax Allocation Bonds, Series A, 5.38%, 03/01/36

    490       507,091  

Virginia Small Business Financing Authority, RB, AMT:

   

Senior Lien, Elizabeth River Crossings OpCo LLC Project, 6.00%, 01/01/37

    725       822,288  

Transform 66 P3 Project, 5.00%, 12/31/49

    2,135       2,393,527  
   

 

 

 
      3,722,906  
Wisconsin — 0.6%  

Public Finance Authority, Refunding RB, National Gypsum Co., AMT, 4.00%, 08/01/35

    280       272,034  
 

 

 

6    2017 BLACKROCK QUARTERLY REPORT TO SHAREHOLDERS


Schedule of Investments  (unaudited) (continued)

November 30, 2017

  

BlackRock Municipal Bond Trust (BBK)

(Percentages shown are based on Net Assets)

 

Security   Par
(000)
    Value  
Wisconsin (continued)  

WPPI Energy Power Supply Systems, Refunding RB, Series A, 5.00%, 07/01/37

  $ 665     $ 750,160  
   

 

 

 
      1,022,194  

Total Municipal Bonds — 136.3%
(Cost — $214,092,490)

 

    230,943,073  
   

 

 

 

Municipal Bonds Transferred to Tender Option Bond Trusts(h) — 23.3%

 

Colorado — 2.3%  

Colorado Health Facilities Authority, RB, Catholic Health, Series C-7 (AGM), 5.00%, 05/01/18(b)

    3,750       3,805,725  
   

 

 

 
Connecticut — 1.8%  

Connecticut State Health & Educational Facility Authority, Refunding RB, Trinity Health Credit Group, 5.00%, 12/01/45

    2,611       2,956,144  
   

 

 

 
Georgia — 2.7%  

City of Atlanta Georgia Water & Wastewater Revenue, Refunding RB, 5.00%, 11/01/43

    4,003       4,611,544  
   

 

 

 
New Jersey — 0.9%  

New Jersey Transportation Trust Fund Authority, RB, Transportation System, Series B, 5.25%, 06/15/36(i)

    1,400       1,493,850  
   

 

 

 
New York — 12.7%  

City of New York New York, GO, Fiscal 2015, Series B, 4.00%, 08/01/32

    3,990       4,313,948  

Hudson Yards Infrastructure Corp., RB, Fiscal 2012, Series A, 5.75%, 02/15/47(i)

    2,500       2,798,168  
Security   Par
(000)
    Value  
New York (continued)  

New York Liberty Development Corp., RB, 1 World Trade Center Port Authority Consolidated Bonds, 5.25%, 12/15/43

  $ 2,505     $ 2,793,080  

State of New York Dormitory Authority, RB, State University Dormitory Facilities, New York University, Series A, 5.00%, 07/01/18(b)

    2,199       2,244,286  

State of New York Thruway Authority, Refunding RB, Transportation, Personal Income Tax, Series A, 5.00%, 03/15/31

    1,560       1,738,530  

City of New York New York Municipal Water Finance Authority, RB, Water & Sewer System, Fiscal 2009, Series A:

   

5.75%, 06/15/18(b)

    104       105,956  

5.75%, 06/15/40

    346       354,323  

City of New York New York Municipal Water Finance Authority, Refunding RB, Water & Sewer System, 2nd General Resolution:

   

Fiscal 2013, Series CC, 5.00%, 06/15/47

    6,000       6,729,722  

Series FF-2, 5.50%, 06/15/40

    405       428,132  
   

 

 

 
      21,506,145  
   

 

 

 
Ohio — 1.9%  

County of Montgomery Ohio, RB, Catholic Health, Series C-1 (AGM), 5.00%, 04/28/18(b)

    1,260       1,278,396  

Ohio Higher Educational Facility Commission, RB, Cleveland Clinic Health, Series A, 5.25%, 01/01/18(b)

    2,000       2,002,810  
   

 

 

 
      3,281,206  
   

 

 

 
Texas — 1.0%  

City of San Antonio Texas Public Service Board, RB, Electric & Gas Systems, Junior Lien, 5.00%, 02/01/43

    1,580       1,754,965  
   

 

 

 

Total Municipal Bonds Transferred to Tender Option Bond Trusts — 23.3%
(Cost — $37,831,644)

 

    39,409,579  
   

 

 

 
 

 

 

SCHEDULES OF INVESTMENTS      7  


Schedule of Investments  (unaudited) (continued)

November 30, 2017

  

BlackRock Municipal Bond Trust (BBK)

(Percentages shown are based on Net Assets)

 

            Value  

Total Long-Term Investments — 159.6%
(Cost — $251,924,134)

    $ 270,352,652  
   

 

 

 
            Value  

Other Assets Less Liabilities — 0.9%

    $ 1,351,074  

Liability for TOB Trust Certificates, Including Interest Expense and Fees Payable — (13.3)%

      (22,450,971

VMTP Shares, at Liquidation Value — (47.2)%

      (79,900,000
   

 

 

 

Net Assets Applicable to Common Shares — 100.0%

    $ 169,352,755  
   

 

 

 

 

 
(a) Security exempt from registration pursuant to Rule 144A under the Securities Act of 1933, as amended. These securities may be resold in transactions exempt from registration to qualified institutional investors.
(b) U.S. 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.
(c) Step-up bond that pays an initial coupon rate for the first period and then a higher coupon rate for the following periods. Rate as of period end.
(d) Zero-coupon bond.
(e) Issuer filed for bankruptcy and/or is in default.
(f) Non-income producing security.
(g) When-issued security.
(h) Represent bonds transferred to a TOB Trust in exchange of cash and residual certificates received by the Trust. These bonds serve as collateral in a secured borrowing.
(i)  All or a portion of security is subject to a recourse agreement. The aggregate maximum potential amount the Trust could ultimately be required to pay under the agreements, which expire between February 15, 2019 to June 15, 2019, is $2,411,645.

During the period ended November 30, 2017, investments in issuers considered to be an affiliate of the Trust for purposes of Section 2(a)(3) of the Investment Company Act of 1940, as amended, were as follows:

 

Affiliate    Shares
Held at
08/31/17
     Net
Activity
     Shares
Held at
11/30/17
     Value at
11/30/17
     Income      Net
Realized
Gain (Loss)
 (a)
     Change in
Unrealized
Appreciation
(Depreciation)
 

BlackRock Liquidity Funds, MuniCash, Institutional Class

     136,442        (136,442           $      $ 1,316      $ (24    $  
           

 

 

    

 

 

    

 

 

    

 

 

 

 

  (a)  Includes net capital gain distributions, if applicable.  

 

 

8    2017 BLACKROCK QUARTERLY REPORT TO SHAREHOLDERS


Schedule of Investments  (unaudited) (continued)

November 30, 2017

  

BlackRock Municipal Bond Trust (BBK)

 

Derivative Financial Instruments Outstanding as of Period End

Futures Contracts

 

Description    Number of
Contracts
       Expiration
Date
       Notional
Amount (000)
       Value/
Unrealized
Appreciation
(Depreciation)
 

Short Contracts

                 

10-Year U.S. Treasury Note

     22          03/20/18        $ 2,729        $ 19,662  

Long U.S. Treasury Bond

     39          03/20/18          5,917          62,047  

5-Year U.S. Treasury Note

     17          03/29/18          1,978          7,511  
                 

 

 

 

Total

                  $ 89,220  
                 

 

 

 

Portfolio Abbreviations

AGC    Assured Guarantee Corp.
AGM    Assured Guaranty Municipal Corp.
AMBAC    American Municipal Bond Assurance Corp.
AMT    Alternative Minimum Tax (subject to)
ARB    Airport Revenue Bonds
CAB    Capital Appreciation Bonds
COP    Certificates of Participation
EDA    Economic Development Authority
GARB    General Airport Revenue Bonds
GO    General Obligation Bonds
IDA    Industrial Development Authority
ISD    Independent School District
M/F    Multi-Family
NPFGC    National Public Finance Guarantee Corp.
PILOT    Payment in Lieu of Taxes
PSF-GTD    Permanent School Fund Guaranteed
RB    Revenue Bonds

 

 

SCHEDULES OF INVESTMENTS      9  


Schedule of Investments  (unaudited) (continued)

November 30, 2017

  

BlackRock Municipal Bond Trust (BBK)

 

Fair Value Hierarchy as of Period End

Various inputs are used in determining the fair value of investments and derivative financial instruments. These inputs to valuation techniques are categorized into a fair value hierarchy consisting of three broad levels for financial reporting purposes as follows:

 

    Level 1 — Unadjusted price quotations in active markets/exchanges for identical assets or liabilities that the Trust has the ability to access

 

    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 and derivative financial instruments)

The hierarchy gives the highest priority to unadjusted quoted prices in active markets for identical assets or liabilities (Level 1 measurements) and the lowest priority to unobservable inputs (Level 3 measurements). Accordingly, the degree of judgment exercised in determining fair value is greatest for instruments categorized in Level 3. The inputs used to measure fair value may fall into different levels of the fair value hierarchy. In such cases, for disclosure purposes, the fair value hierarchy classification is determined based on the lowest level input that is significant to the fair value measurement in its entirety. Investments classified within Level 3 have significant unobservable inputs used by the BlackRock Global Valuation Methodologies Committee (the “Global Valuation Committee”) in determining the price for Fair Valued Investments. Level 3 investments include equity or debt issued by privately held companies or funds. There may not be a secondary market, and/or there are a limited number of investors. Level 3 investments may also be adjusted to reflect illiquidity and/or non-transferability, with the amount of such discount estimated by the Global Valuation Committee in the absence of market information.

Changes in valuation techniques may result in transfers into or out of an assigned level within the hierarchy. In accordance with the Trust’s policy, transfers between different levels of the fair value hierarchy are deemed to have occurred as of the beginning of the reporting period. The categorization of a value determined for investments and derivative financial instruments is based on the pricing transparency of the investments and derivative financial instruments and is not necessarily an indication of the risks associated with investing in those securities. For information about the Trust’s policy regarding valuation of investments and derivative financial instruments, refer to the Trust’s most recent financial statements as contained in its annual report.

The following tables summarize the Trust’s investments and derivative financial instruments categorized in the disclosure hierarchy:

 

      Level 1        Level 2        Level 3        Total  

Assets:

 

Investments:

 

Long-Term Investments(a)

   $        $ 270,352,652        $        $ 270,352,652  
  

 

 

      

 

 

      

 

 

      

 

 

 

Derivative Financial Instruments(b)

 

Assets:

 

Interest rate contracts

   $ 89,220        $        $        $ 89,220  
  

 

 

      

 

 

      

 

 

      

 

 

 

 

  (a)  See above Schedule of Investments for values in each state or political subdivision.  
  (b) Derivative financial instruments are futures contracts which are valued at the unrealized appreciation (depreciation) on the instrument.  

The Trust may hold assets and/or liabilities in which the fair value approximates the carrying for financial reporting purposes. As of period end, such assets and/or liabilities are categorized within the disclosure hierarchy as follows:

 

      Level 1        Level 2        Level 3        Total  

Liabilities:

 

TOB Trust Certificates

   $        $ (22,403,733      $        $ (22,403,733

VMTP Shares at Liquidation Value

              (79,900,000                 (79,900,000
  

 

 

      

 

 

      

 

 

      

 

 

 
   $        $ (102,303,733      $        $ (102,303,733
  

 

 

      

 

 

      

 

 

      

 

 

 

During the period ended November 30, 2017, there were no transfers between levels.

 

 

10    2017 BLACKROCK QUARTERLY REPORT TO SHAREHOLDERS


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 13a-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/ John M. Perlowski                        
    John M. Perlowski
   

Chief Executive Officer (principal executive officer) of

BlackRock Municipal Bond Trust

Date: January 22, 2018

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/ John M. Perlowski                        
    John M. Perlowski
    Chief Executive Officer (principal executive officer) of
BlackRock Municipal Bond Trust

Date: January 22, 2018

 

By:    

  /s/ Neal J. Andrews                            
    Neal J. Andrews
    Chief Financial Officer (principal financial officer) of
BlackRock Municipal Bond Trust

Date: January 22, 2018