March 31, 2026
2026 Quarterly Report
(Unaudited)
BlackRock Taxable Municipal Bond Trust (BBN)
Not FDIC Insured • May Lose Value • No Bank Guarantee

Schedule of Investments (unaudited)
March 31, 2026
BlackRock Taxable Municipal Bond Trust (BBN)
(Percentages shown are based on Net Assets)
Security
 
Par
(000)
Value
Corporate Bonds
Commercial Services & Supplies(a) — 2.9%
Grand Canyon University, 5.13%, 10/01/28
$
6,022
$ 5,937,031
Rensselaer Polytechnic Institute, Series 2018, 5.25%,
09/01/48
 
18,190
16,184,185
Wesleyan University, 4.78%, 07/01/2116
 
11,000
8,486,805
 
 
30,608,021
Financial Services(b) — 1.8%
MMH Master LLC
 
6.38%, 02/01/34
 
2,326
2,381,671
6.50%, 02/01/39
 
6,475
6,630,099
6.75%, 02/01/44
 
7,300
7,619,281
Western Group Housing LP, 6.75%, 03/15/57
 
2,345
2,454,586
 
 
19,085,637
Health Care Providers & Services — 3.6%
Ascension Health, Series 2025, 4.92%, 11/15/35(a)
 
4,750
4,693,348
CommonSpirit Health, 5.32%, 12/01/34(a)
 
5,000
5,008,144
Ochsner Clinic Foundation, 5.90%, 05/15/45(a)
 
5,000
4,841,070
Sutter Health, Series 2025, 5.54%, 08/15/35(a)
 
10,490
10,823,088
West Virginia United Health System Obligated Group,
Series 2018, 4.92%, 06/01/48
 
15,000
12,734,934
 
 
38,100,584
Interactive Media & Services — 1.1%
Meta Platforms, Inc., 5.50%, 11/15/45(a)
 
12,550
11,876,260
Internet Software & Services — 0.9%
Amazon.com, Inc., 5.65%, 03/13/46
 
10,000
9,965,403
Pharmaceuticals — 0.9%
AbbVie, Inc., 4.75%, 03/15/36(a)
 
9,360
9,183,272
Total Corporate Bonds — 11.2%
(Cost: $125,978,392)
118,819,177
Municipal Bonds
Alabama — 0.5%
Alabama Incentives Financing Authority, Refunding RB,
Series B, (AGM), 3.54%, 09/01/42
 
4,970
4,158,295
Jacksonville Public Educational Building Authority, RB,
(AGM), 7.00%, 08/01/46
 
1,365
1,485,154
 
 
5,643,449
Alaska — 0.9%
Alaska Housing Finance Corp., RB, S/F Housing,
Series C, 6.25%, 12/01/53(a)
 
8,715
9,162,259
Arizona — 3.4%
Maricopa County Industrial Development Authority, RB,
7.38%, 10/01/29(b)
 
11,540
12,165,888
Salt River Project Agricultural Improvement & Power
District, RB, BAB, 4.84%, 01/01/41(a)
 
24,545
23,599,669
 
 
35,765,557
Arkansas — 0.8%
Arkansas Development Finance Authority, RB, AMT,
Sustainability Bonds, 7.38%, 07/01/48(b)
 
7,400
8,005,872
California — 20.8%
Alameda Corridor Transportation Authority, Refunding
RB, CAB(c)
 
Series B, Senior Lien, 0.00%, 10/01/42
 
5,000
1,974,948
Series D, Subordinate, (AGM), 0.00%, 10/01/40
 
3,775
1,631,908
Security
 
Par
(000)
Value
California (continued)
Alameda County Joint Powers Authority, RB, BAB,
Series A, 7.05%, 12/01/44(a)
$
11,000
$ 12,316,382
Bay Area Toll Authority, RB, BAB, Series S-3, 6.91%,
10/01/50
 
14,000
15,729,399
California Infrastructure & Economic Development Bank,
RB, 5.50%, 01/01/38(b)
 
4,500
3,948,696
California Infrastructure & Economic Development Bank,
Refunding RB, Class B, AMT, Sustainability Bonds,
12.00%, 01/01/65(b)(d)
 
3,325
1,762,250
California State Public Works Board, RB, BAB,
Series G-2, 8.36%, 10/01/34(a)
 
17,050
20,075,869
California State University, Refunding RB, Series B,
2.80%, 11/01/41
 
5,000
3,717,497
Cerritos Community College District, Refunding GO,
3.00%, 08/01/38
 
1,000
829,308
City & County of San Francisco California, COP,
Class A, 6.38%, 10/01/43
 
8,480
8,671,812
City of Chula Vista California, RB, 2.40%, 06/01/36
 
1,275
1,024,945
City of Huntington Beach California, Refunding RB
 
3.28%, 06/15/40(a)
 
6,000
4,903,648
3.38%, 06/15/44
 
1,500
1,146,738
City of Orange California, RB, (BAM), 3.12%, 06/01/44
 
2,000
1,474,587
City of Riverside California, RB, Series A, (BAM-TCRS),
3.86%, 06/01/45
 
1,500
1,319,685
County of Sonoma California, Refunding RB, Series A,
6.00%, 12/01/29(a)
 
7,535
7,803,682
Golden State Tobacco Securitization Corp., Refunding
RB
 
(SAP), 3.12%, 06/01/38
 
9,100
7,579,744
Class B, (SAP), 3.29%, 06/01/42
 
500
389,357
Series A-1, 3.71%, 06/01/41
 
26,275
20,816,169
Series A-1, 4.21%, 06/01/50
 
22,500
17,040,778
Los Angeles Community College District, GO, BAB,
6.60%, 08/01/42
 
10,000
10,800,651
Regents of the University of California Medical Center
Pooled Revenue, RB, BAB, Series H, 6.55%,
05/15/48
 
5,330
5,655,244
San Diego County Regional Airport Authority, ARB,
Series B, 5.59%, 07/01/43
 
3,570
3,569,719
San Joaquin Hills Transportation Corridor Agency,
Refunding RB, Series B, (AGM), 3.49%, 01/15/50
 
7,200
5,455,187
State of California, GO, BAB(a)
 
7.55%, 04/01/39
 
9,035
10,725,201
7.35%, 11/01/39
 
5,000
5,768,610
7.63%, 03/01/40
 
8,950
10,650,953
7.60%, 11/01/40
 
15,000
17,992,551
State of California, Refunding GO(a)
 
5.13%, 03/01/38
 
10,010
10,045,875
5.88%, 10/01/41
 
5,000
5,232,433
 
 
220,053,826
Colorado — 1.8%
Colorado Health Facilities Authority, Refunding RB,
Series B, 4.48%, 12/01/40
 
11,885
10,412,034
Colorado Housing and Finance Authority, RB, S/F
Housing, Series B-1, Class I, (GNMA), 6.25%,
11/01/54
 
1,760
1,876,435
Denver City & County School District No. 1, Refunding
COP, Series B, 7.02%, 12/15/37
 
6,000
6,834,469
 
 
19,122,938
2

Schedule of Investments (unaudited)(continued)
March 31, 2026
BlackRock Taxable Municipal Bond Trust (BBN)
(Percentages shown are based on Net Assets)
Security
 
Par
(000)
Value
Connecticut — 1.7%
Connecticut Housing Finance Authority, RB, S/F
Housing, Series E-1, Class T, Sustainability Bonds,
5.37%, 11/15/44(a)
$
6,575
$ 6,311,092
Connecticut Housing Finance Authority, Refunding RB,
S/F Housing, Series A-2, Sustainability Bonds,
(FHLMC, FNMA, GNMA), 5.41%, 05/15/55
 
9,675
9,882,061
Connecticut State Health & Educational Facilities
Authority, Refunding RB, Series G-2, 4.25%,
07/01/27(b)
 
1,545
1,539,981
 
 
17,733,134
District of Columbia — 1.8%
Metropolitan Washington Airports Authority Dulles Toll
Road Revenue, ARB, BAB, Series D, 8.00%,
10/01/47(a)
 
10,750
13,153,025
Metropolitan Washington Airports Authority Dulles Toll
Road Revenue, RB, BAB, 7.46%, 10/01/46
 
5,000
5,881,607
 
 
19,034,632
Florida — 5.2%
Capital Trust Agency, Inc., RB, 5.50%, 06/15/26(b)
 
235
234,151
County of Miami-Dade Seaport Department, ARB,
6.22%, 11/01/55
 
3,295
3,383,515
Florida Development Finance Corp., RB, Series D,
5.75%, 12/15/26(b)
 
650
617,500
Florida Development Finance Corp., Refunding RB
 
Class B, 4.01%, 04/01/40
 
2,500
2,161,094
Series B, 4.11%, 04/01/50
 
5,000
3,979,772
AMT, 0.00%, 07/15/32(b)(e)
 
1,150
402,500
Miami-Dade County Educational Facilities Authority,
Refunding RB, Series B, 5.07%, 04/01/50
 
12,250
11,240,377
State Board of Administration Finance Corp., RB,
Series A, 5.53%, 07/01/34(a)
 
18,300
19,175,580
Village Center Community Development District,
Refunding RB, 5.02%, 11/01/36
 
13,500
13,477,443
 
 
54,671,932
Georgia — 5.6%
East Point Business & Industrial Development Authority,
RB, Series B, 5.25%, 06/15/31(b)(e)(f)
 
860
516,000
Municipal Electric Authority of Georgia, Refunding RB,
BAB
 
6.64%, 04/01/57(a)
 
24,720
26,500,661
6.66%, 04/01/57
 
19,972
21,548,709
7.06%, 04/01/57
 
9,174
10,142,824
 
 
58,708,194
Hawaii — 0.7%
State of Hawaii, GO, Series GK, 6.05%, 10/01/36
 
5,000
5,402,719
State of Hawaii, Refunding GO, Series GC, 2.37%,
10/01/35
 
2,500
2,059,539
 
 
7,462,258
Idaho — 1.6%
Idaho Housing & Finance Association, RB, S/F Housing
 
Series B, (FHLMC, FNMA, GNMA), 6.25%, 07/01/54
 
5,470
5,792,058
Series E, (FHLMC, FNMA, GNMA), 6.06%,
01/01/44(a)
 
10,010
10,140,670
Idaho Housing & Finance Association, Refunding RB,
8.00%, 03/01/39(b)
 
600
601,079
 
 
16,533,807
Illinois — 15.5%
Chicago Board of Education, GO, BAB
 
6.04%, 12/01/29
 
8,510
8,399,290
Security
 
Par
(000)
Value
Illinois (continued)
Chicago Board of Education, GO, BAB(continued)
 
6.52%, 12/01/40
$
9,745
$ 9,302,872
Chicago OHare International Airport, Refunding ARB,
BAB, Series B, 6.40%, 01/01/40
 
1,500
1,643,166
Chicago Transit Authority Sales & Transfer Tax Receipts
Revenue, RB
 
Series A, 6.90%, 12/01/40
 
7,024
7,843,873
Series B, 6.90%, 12/01/40
 
4,311
4,813,412
Chicago Transit Authority Sales Tax Receipts Fund, RB,
BAB, Series B, 6.20%, 12/01/40(a)
 
15,473
16,349,007
City of Chicago Illinois Wastewater Transmission
Revenue, RB, BAB, Series B, 2nd Lien, 6.90%,
01/01/40(a)
 
36,000
39,360,870
City of Chicago Illinois Waterworks Revenue, RB, BAB,
Series B, 2nd Lien, 6.74%, 11/01/40
 
15,250
16,684,418
Illinois Finance Authority, RB, 6.69%, 07/01/33
 
2,925
2,980,756
Illinois Housing Development Authority, RB, S/F Housing
 
Series B, Sustainability Bonds, (FHLMC, FNMA,
GNMA), 5.88%, 10/01/49
 
3,800
3,762,400
Series F, Sustainability Bonds, (FHLMC, FNMA,
GNMA), 5.90%, 10/01/46
 
6,790
6,780,958
Illinois Municipal Electric Agency, RB, BAB, 7.29%,
02/01/35(a)
 
5,425
5,837,834
Northern Illinois Municipal Power Agency, RB, BAB,
7.82%, 01/01/40
 
5,000
5,790,641
State of Illinois, GO, BAB
 
6.63%, 02/01/35
 
1,869
1,957,348
7.35%, 07/01/35(a)
 
25,611
27,535,447
Series 3, 6.73%, 04/01/35(a)
 
4,862
5,089,739
 
 
164,132,031
Indiana — 1.5%
Indiana Finance Authority, RB, BAB, Series B, 6.60%,
02/01/39(a)
 
7,900
8,687,703
Indiana Municipal Power Agency, RB, BAB, Series A,
5.59%, 01/01/42
 
7,260
7,071,342
 
 
15,759,045
Kentucky — 0.9%
Westvaco Corp., RB, 7.67%, 01/15/27(b)
 
9,400
9,607,076
Louisiana — 0.9%
Louisiana Local Government Environmental Facilities &
Community Development Authority, RB, Series A-3,
5.20%, 12/01/39(a)
 
9,750
9,913,652
Maryland — 2.6%
Maryland Community Development Administration, RB,
S/F Housing
 
Series F, Sustainability Bonds, (FHLMC, FNMA,
GNMA), 6.15%, 09/01/38
 
5,000
5,195,234
Series F, Sustainability Bonds, (FHLMC, FNMA,
GNMA), 6.23%, 09/01/43
 
10,000
10,184,481
Maryland Economic Development Corp., RB
 
4.00%, 04/01/34
 
9,090
6,725,715
Sustainability Bonds, 5.94%, 05/31/57
 
5,000
5,015,044
Maryland Health & Higher Educational Facilities
Authority, RB, Series B, 6.25%, 03/01/27(b)
 
255
253,275
 
 
27,373,749
Massachusetts — 6.8%
Commonwealth of Massachusetts Transportation Fund
Revenue, RB, BAB, 5.73%, 06/01/40(a)
 
5,000
5,181,104
Massachusetts Educational Financing Authority, RB
 
Series A, 3.61%, 07/01/36
 
8,465
7,662,944
Schedule of Investments
3

Schedule of Investments (unaudited)(continued)
March 31, 2026
BlackRock Taxable Municipal Bond Trust (BBN)
(Percentages shown are based on Net Assets)
Security
 
Par
(000)
Value
Massachusetts (continued)
Massachusetts Educational Financing Authority,
RB(continued)
 
Series A, 5.95%, 07/01/44
$
13,695
$ 14,017,136
Series A, 6.17%, 07/01/50
 
15,000
15,388,476
Massachusetts Educational Financing Authority,
Refunding RB
 
Series A, 4.95%, 07/01/38
 
13,355
12,899,823
Series A, 6.35%, 07/01/49
 
8,885
9,221,631
Massachusetts Housing Finance Agency, RB, S/F
Housing, Series 226, Sustainability Bonds, (FHLMC,
FNMA, GNMA), 5.84%, 12/01/42
 
3,170
3,187,813
Massachusetts Port Authority, Refunding RB, Series C,
2.72%, 07/01/42
 
5,055
3,840,494
 
 
71,399,421
Michigan — 4.2%
Michigan Finance Authority, RB
 
6.38%, 06/01/33(b)(e)
 
1,000
480,000
Series D, 5.02%, 11/01/43
 
7,500
7,185,548
Michigan Finance Authority, Refunding RB, CAB,
Series B, 0.00%, 06/01/45(c)
 
50,000
13,321,280
Michigan State Housing Development Authority, RB, S/F
Housing, Series B, Sustainability Bonds, 5.77%,
12/01/44
 
3,125
3,098,114
Michigan State University, RB, BAB, Series A, 6.17%,
02/15/50(a)
 
5,500
5,637,296
Michigan State University, Refunding RB, Series A,
4.50%, 08/15/48(a)
 
14,575
13,250,047
Western Michigan University, Refunding RB, Series B,
(AGM), 2.88%, 11/15/43
 
1,500
1,135,782
 
 
44,108,067
Minnesota — 1.8%
Minnesota Housing Finance Agency, RB, S/F Housing,
Series P, Sustainability Bonds, (FHLMC, FNMA,
GNMA), 5.79%, 07/01/44
 
3,000
3,018,118
Southern Minnesota Municipal Power Agency,
Refunding RB, BAB, Series A, 5.93%, 01/01/43
 
8,000
8,166,280
Western Minnesota Municipal Power Agency, RB, BAB,
6.77%, 01/01/46
 
5,000
5,423,870
Western Minnesota Municipal Power Agency, Refunding
RB, Series A, 3.23%, 01/01/46
 
3,000
2,286,296
 
 
18,894,564
Missouri — 1.9%
Curators of the University of Missouri, RB, BAB, 5.79%,
11/01/41
 
7,000
7,120,785
Missouri Joint Municipal Electric Utility Commission, RB,
BAB, 7.73%, 01/01/39
 
11,000
13,025,343
 
 
20,146,128
Nevada — 0.8%
County of Clark Department of Aviation, ARB, BAB,
Series C, 6.82%, 07/01/45
 
2,000
2,213,103
Nevada Housing Division, RB, S/F Housing, Series F,
(FHLMC, FNMA, GNMA), 5.52%, 10/01/44
 
6,485
6,296,517
 
 
8,509,620
New Hampshire — 2.6%
New Hampshire Business Finance Authority, RB, 3.78%,
01/01/36
 
2,490
1,832,590
New Hampshire Business Finance Authority, Refunding
RB
 
3.30%, 04/01/32
 
12,895
9,416,725
Security
 
Par
(000)
Value
New Hampshire (continued)
New Hampshire Business Finance Authority, Refunding
RB(continued)
 
2.87%, 07/01/35
$
4,655
$ 3,342,377
Series A, 6.89%, 04/01/34(b)
 
8,835
9,237,995
New Hampshire Health and Education Facilities
Authority Act, RB, Class A, 5.04%, 11/01/34
 
4,130
4,132,359
 
 
27,962,046
New Jersey — 8.0%
New Jersey Economic Development Authority, RB
 
Series A, (NPFGC), 7.43%, 02/15/29
 
15,535
16,293,571
Series B, 7.00%, 06/15/30(b)
 
2,625
2,625,903
New Jersey Educational Facilities Authority, Refunding
RB
 
(AGM), 3.51%, 07/01/42
 
6,000
4,887,777
(AGM), 3.61%, 07/01/50
 
1,500
1,097,931
New Jersey Institute of Technology, Refunding RB,
Series B, 3.42%, 07/01/42(a)
 
7,500
6,091,742
New Jersey Transportation Trust Fund Authority,
Refunding RB, 4.08%, 06/15/39
 
7,230
6,572,990
New Jersey Turnpike Authority, RB, BAB(a)
 
Series A, 7.10%, 01/01/41
 
34,000
39,224,301
Series F, 7.41%, 01/01/40
 
6,790
8,025,950
 
 
84,820,165
New York — 11.3%
City of New York, GO
 
Series H, 6.29%, 02/01/45
 
7,260
7,554,579
Series D-1, Sustainability Bonds, 5.11%, 10/01/54
 
3,930
3,589,811
City of New York, Refunding GO
 
Series D, 2.17%, 08/01/34(g)
 
4,305
3,592,294
Series D, 2.17%, 08/01/34
 
2,980
2,466,305
Metropolitan Transportation Authority Dedicated Tax
Fund, RB, BAB, 7.34%, 11/15/39(a)
 
11,620
13,464,525
Metropolitan Transportation Authority, RB, BAB
 
6.67%, 11/15/39
 
2,220
2,371,356
Series TR, 6.69%, 11/15/40
 
19,705
21,259,900
Metropolitan Transportation Authority, Refunding RB,
Series C2, Sustainability Bonds, 5.18%, 11/15/49
 
340
317,218
New York City Housing Development Corp., RB, M/F
Housing
 
Sustainability Bonds, 3.10%, 11/01/45
 
1,310
943,623
Series D, Sustainability Bonds, (HUD SECT 8),
5.40%, 08/01/49(a)
 
6,550
6,243,573
New York City Municipal Water Finance Authority, RB,
BAB, 5.95%, 06/15/42
 
5,000
5,122,109
New York City Municipal Water Finance Authority,
Refunding RB, 5.88%, 06/15/44(a)
 
7,590
7,636,527
New York State Dormitory Authority, RB, Series B,
5.99%, 07/01/45
 
5,145
5,303,847
New York State Dormitory Authority, RB, BAB, Series H,
5.39%, 03/15/40(a)
 
15,000
14,936,412
New York State Dormitory Authority, Refunding RB
 
2.99%, 07/01/40
 
7,090
5,723,289
Class B, 2.69%, 07/01/40
 
3,000
2,284,655
Port Authority of New York & New Jersey, RB, 5.65%,
11/01/40
 
2,115
2,210,879
Triborough Bridge & Tunnel Authority, Refunding RB
 
Series A-3, 2.51%, 05/15/35(a)
 
10,390
8,735,925
4

Schedule of Investments (unaudited)(continued)
March 31, 2026
BlackRock Taxable Municipal Bond Trust (BBN)
(Percentages shown are based on Net Assets)
Security
 
Par
(000)
Value
New York (continued)
Triborough Bridge & Tunnel Authority, Refunding
RB(continued)
 
Series A-3, 2.92%, 05/15/40
$
3,000
$ 2,337,846
United Nations Development Corp., Refunding RB,
Series A, 6.54%, 08/01/55
 
3,400
3,588,537
 
 
119,683,210
North Carolina — 0.6%
North Carolina Housing Finance Agency, RB, S/F
Housing, Series 53-B, Sustainability Bonds, (FHLMC,
FNMA, GNMA), 6.25%, 01/01/55
 
6,535
6,846,299
Ohio — 3.5%
American Municipal Power, Inc., RB, Series B, 7.83%,
02/15/41(a)
 
20,760
25,067,712
Ohio University, RB, 5.59%, 12/01/2114
 
10,100
9,253,374
State of Ohio, Refunding RB, 3.28%, 01/01/42
 
3,000
2,539,727
 
 
36,860,813
Oklahoma — 1.5%
Oklahoma Development Finance Authority, RB
 
Series A-3, 5.09%, 02/01/52(a)
 
6,750
6,461,125
Series A-3, 4.71%, 05/01/52
 
3,695
3,374,433
Series B, 11.00%, 09/01/41(b)
 
2,900
2,707,363
Oklahoma Municipal Power Authority, RB, BAB, 6.44%,
01/01/45
 
3,500
3,680,179
 
 
16,223,100
Pennsylvania — 3.5%
Commonwealth Financing Authority, RB
 
Series A, 4.14%, 06/01/38
 
4,435
4,152,119
Series A, 3.81%, 06/01/41
 
6,110
5,249,919
Pennsylvania Economic Development Financing
Authority, RB, BAB, Series B, 6.53%, 06/15/39(a)
 
23,050
25,019,203
Pennsylvania Turnpike Commission, Refunding RB,
Series 1, 3.58%, 12/01/43
 
3,630
2,967,389
 
 
37,388,630
Puerto Rico — 1.5%
Puerto Rico Sales Tax Financing Corp., Sales Tax
Revenue, RB
 
Series A-1, Restructured, 5.00%, 07/01/58
 
3,465
3,293,992
Series A-2, Restructured, 4.55%, 07/01/40
 
14,899
12,921,569
 
 
16,215,561
South Carolina — 2.4%
South Carolina Jobs-Economic Development Authority,
RB, 7.35%, 08/15/30(b)
 
710
699,288
South Carolina Public Service Authority, RB, BAB,
Series C, (AGM-CR), 6.45%, 01/01/50(a)
 
11,290
12,073,756
South Carolina Public Service Authority, Refunding RB
 
Series C, 5.78%, 12/01/41
 
4,595
4,795,678
Series D, (AGM), 6.45%, 12/01/42
 
2,870
3,214,655
South Carolina Student Loan Corp., RB
 
Series A, 5.13%, 12/01/36
 
1,835
1,823,325
Series A, 3.59%, 12/01/39
 
3,265
3,209,217
 
 
25,815,919
Tennessee — 5.0%
Memphis-Shelby County Industrial Development Board,
Refunding TA, Series B, 5.45%, 07/01/45
 
5,875
4,436,969
Metropolitan Government of Nashville & Davidson
County Convention Center Authority, RB, BAB,
Series A-2, 7.43%, 07/01/43(a)
 
35,105
39,444,884
Security
 
Par
(000)
Value
Tennessee (continued)
Tennessee Housing Development Agency, RB, S/F
Housing
 
Series 1B, Sustainability Bonds, 5.92%, 07/01/49
$
540
$ 540,054
Series 2B, Sustainability Bonds, (FHLMC, FNMA,
GNMA), 5.91%, 07/01/44
 
5,000
5,076,871
Tennessee State School Bond Authority, Refunding RB,
Series A, 2.56%, 11/01/41(a)
 
4,525
3,424,379
 
 
52,923,157
Texas — 9.0%
Alamo Regional Mobility Authority, Refunding RB,
Series B, 3.28%, 06/15/46
 
5,910
4,325,646
Arlington Higher Education Finance Corp., RB(b)(e)
 
5.50%, 04/01/30
 
500
250,000
6.50%, 11/01/32
 
1,280
768,000
Arlington Higher Education Finance Corp., Refunding
RB, Series B, 4.00%, 08/15/28
 
765
741,422
City of San Antonio Texas Customer Facility Charge
Revenue, ARB, 5.87%, 07/01/45
 
7,500
7,288,069
City of San Antonio Texas Electric & Gas Systems
Revenue, Refunding RB, Series A, 5.47%, 02/01/45
 
12,500
12,526,709
Dallas Area Rapid Transit, RB, BAB, 5.02%, 12/01/48
 
2,500
2,308,237
Hidalgo County Regional Mobility Authority, Refunding
RB, Series B, (AGM), 2.91%, 12/01/40
 
5,000
3,892,669
Metropolitan Transit Authority of Harris County Sales &
Use Tax Revenue, Refunding RB, Series A, 2.99%,
11/01/41
 
4,750
3,729,962
New Caney Independent School District, Refunding GO,
(PSF), 2.40%, 02/15/42(a)
 
7,025
5,045,836
New Hope Higher Education Finance Corp., RB,
Series B, 5.00%, 06/15/27(b)
 
265
261,869
Port of Beaumont Industrial Development Authority, RB,
4.10%, 01/01/28(b)
 
8,285
7,532,001
Port of Beaumont Navigation District, Refunding ARB,
Series B, 10.00%, 07/01/26(b)
 
10,000
10,008,505
Rockwall Independent School District, Refunding GO,
(PSF), 2.38%, 02/15/46
 
5,000
3,317,982
Texas Natural Gas Securitization Finance Corp., RB,
Series 2023-1, Class A2, 5.17%, 04/01/41(a)
 
10,000
10,127,821
Texas Private Activity Bond Surface Transportation
Corp., RB, Series B, 3.92%, 12/31/49
 
25,000
19,929,190
United Independent School District, Refunding GO,
(PSF), 2.85%, 08/15/44
 
3,885
2,848,682
 
 
94,902,600
Utah — 0.4%
Utah Housing Corp., RB, S/F Housing
 
Series D, (FHLMC, FNMA, GNMA), 6.25%, 07/01/54
 
2,700
2,856,068
Series I, (FHLMC, FNMA, GNMA), 5.96%, 07/01/45
 
875
880,773
 
 
3,736,841
Virginia — 4.0%
Tobacco Settlement Financing Corp., Refunding RB,
Series A-1, 6.71%, 06/01/46
 
28,655
22,318,918
Virginia Housing Development Authority, RB, M/F
Housing
 
Series C, 3.33%, 04/01/40
 
5,000
4,189,840
Series D, 3.52%, 06/01/40
 
4,000
3,430,309
Series F, (HUD SECT 8), 3.13%, 07/01/45
 
3,425
2,519,661
Schedule of Investments
5

Schedule of Investments (unaudited)(continued)
March 31, 2026
BlackRock Taxable Municipal Bond Trust (BBN)
(Percentages shown are based on Net Assets)
Security
 
Par
(000)
Value
Virginia (continued)
Virginia Housing Development Authority, RB, S/F
Housing
 
Series A, 5.57%, 10/01/49
$
5,845
$ 5,738,052
Series E, 5.82%, 07/01/44(a)
 
3,670
3,699,770
 
 
41,896,550
Washington — 1.8%
Washington State Convention Center Public Facilities
District, RB, BAB, 6.79%, 07/01/40
 
17,800
19,121,015
West Virginia — 1.5%
Tobacco Settlement Finance Authority, RB, Series B,
0.00%, 06/01/47(c)
 
1,600
148,366
Tobacco Settlement Finance Authority, Refunding RB
 
Series A, Class 1, 4.31%, 06/01/49
 
10,000
7,388,060
Series B, Class 2, 4.88%, 06/01/49
 
8,030
7,878,429
 
 
15,414,855
Wisconsin(b) — 0.9%
Public Finance Authority, RB
 
5.38%, 06/15/28
 
250
245,026
5.25%, 01/01/31
 
845
769,818
Series B, Class S, 5.25%, 06/15/26
 
50
49,923
Public Finance Authority, RB, M/F Housing, 6.70%,
02/01/55
 
7,550
7,574,133
Public Finance Authority, Refunding RB, Series B,
6.13%, 10/01/49
 
1,470
1,269,582
 
 
9,908,482
Total Municipal Bonds — 139.2%
(Cost: $1,451,047,834)
1,471,460,454
 
 

Shares
 
Warrants
Construction & Engineering — 0.0%
Brightline West, (Expires 11/26/35, Strike Price USD
5.00)(f)(h)
 
27,664
45,646
Total Warrants — 0.0%
(Cost: $)
45,646
Total Long-Term Investments — 150.4%
(Cost: $1,577,026,226)
1,590,325,277
Security
 
Shares
Value
Short-Term Securities
Money Market Funds — 0.5%
BlackRock Liquidity Funds, T-Fund, Institutional Shares,
3.55%(i)(j)
 
4,989,151
$     4,989,151
Total Short-Term Securities — 0.5%
(Cost: $4,989,151)
4,989,151
Total Investments — 150.9%
(Cost: $1,582,015,377)
1,595,314,428
Liabilities in Excess of Other Assets — (50.9)%
(537,827,714
)
Net Assets — 100.0%
$ 1,057,486,714
(a)
All or a portion of the security has been pledged as collateral in connection with
outstanding reverse repurchase agreements.
(b)
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.
(c)
Zero-coupon bond.
(d)
Variable rate security. Interest rate resets periodically. The rate shown is the effective
interest rate as of period end. Security description also includes the reference rate and
spread if published and available.
(e)
Issuer filed for bankruptcy and/or is in default.
(f)
Non-income producing security.
(g)
Security is collateralized by municipal bonds or U.S. Treasury obligations.
(h)
Security is valued using significant unobservable inputs and is classified as Level 3 in the
fair value hierarchy.
(i)
Affiliate of the Trust.
(j)
Annualized 7-day yield as of period end.
Affiliates
Investments in issuers considered to be affiliate(s) of the Trust during the period ended March 31, 2026 for purposes of Section 2(a)(3) of the Investment Company Act of 1940, as amended, were as follows:
Affiliated Issuer
Value at
12/31/25
Purchases
at Cost
Proceeds
from Sales
Net
Realized
Gain (Loss)
Change in
Unrealized
Appreciation
(Depreciation)
Value at
03/31/26
Shares
Held at
03/31/26
Income
Capital Gain
Distributions
from
Underlying
Funds
BlackRock Liquidity Funds, T-Fund, Institutional Shares
$ 5,826,343
$ 
$ (837,192
)(a)
$ 
$ 
$ 4,989,151
4,989,151
$ 84,494
$ 
(a)
Represents net amount purchased (sold).
6

Schedule of Investments (unaudited)(continued)
March 31, 2026
BlackRock Taxable Municipal Bond Trust (BBN)
Reverse Repurchase Agreements
Counterparty
Interest
Rate
Trade
Date
Maturity
Date(a)
Face Value
Face Value
Including
Accrued Interest
Type of Non-Cash Underlying
Collateral
Remaining
Contractual Maturity
of the Agreements(a)
Barclays Bank PLC
3.84
%(b)
05/16/25
Open
$ 8,721,212
$ 9,051,238
Municipal Bonds
Open/Demand
Barclays Bank PLC
3.85
(b)
05/16/25
Open
4,575,000
4,748,532
Municipal Bonds
Open/Demand
Barclays Bank PLC
3.85
(b)
05/16/25
Open
13,106,250
13,603,377
Municipal Bonds
Open/Demand
Barclays Bank PLC
3.85
(b)
05/16/25
Open
7,375,637
7,655,400
Municipal Bonds
Open/Demand
Barclays Bank PLC
3.85
05/16/25
Open
25,434,856
26,399,614
Municipal Bonds
Open/Demand
Barclays Bank PLC
3.85
(b)
05/16/25
Open
5,880,938
6,104,005
Municipal Bonds
Open/Demand
RBC Capital Markets, LLC
3.95
(b)
05/16/25
Open
17,865,375
18,547,535
Municipal Bonds
Open/Demand
RBC Capital Markets, LLC
3.95
(b)
05/16/25
Open
15,193,750
15,773,898
Municipal Bonds
Open/Demand
RBC Capital Markets, LLC
3.95
(b)
05/16/25
Open
17,573,750
18,244,774
Municipal Bonds
Open/Demand
RBC Capital Markets, LLC
3.95
(b)
05/16/25
Open
38,160,000
39,617,076
Municipal Bonds
Open/Demand
TD Securities (USA) LLC
3.82
(b)
05/16/25
Open
4,775,000
4,952,765
Corporate Bonds
Open/Demand
TD Securities (USA) LLC
3.85
(b)
05/16/25
Open
10,113,500
10,495,459
Municipal Bonds
Open/Demand
TD Securities (USA) LLC
3.85
(b)
05/16/25
Open
7,945,000
8,245,061
Municipal Bonds
Open/Demand
TD Securities (USA) LLC
3.85
(b)
05/16/25
Open
38,308,331
39,740,531
Municipal Bonds
Open/Demand
TD Securities (USA) LLC
3.85
(b)
05/16/25
Open
7,409,737
7,686,759
Municipal Bonds
Open/Demand
TD Securities (USA) LLC
3.85
(b)
05/16/25
Open
18,551,250
19,251,879
Municipal Bonds
Open/Demand
TD Securities (USA) LLC
3.85
(b)
05/16/25
Open
15,994,981
16,599,067
Municipal Bonds
Open/Demand
TD Securities (USA) LLC
3.85
(b)
05/16/25
Open
3,527,788
3,661,214
Municipal Bonds
Open/Demand
TD Securities (USA) LLC
3.85
(b)
05/16/25
Open
6,743,344
6,998,021
Municipal Bonds
Open/Demand
TD Securities (USA) LLC
3.85
(b)
05/16/25
Open
6,562,188
6,810,023
Municipal Bonds
Open/Demand
TD Securities (USA) LLC
3.85
(b)
05/16/25
Open
1,515,000
1,572,217
Municipal Bonds
Open/Demand
TD Securities (USA) LLC
3.85
(b)
05/16/25
Open
16,912,500
17,551,238
Municipal Bonds
Open/Demand
TD Securities (USA) LLC
3.85
(b)
05/16/25
Open
10,209,550
10,592,913
Municipal Bonds
Open/Demand
TD Securities (USA) LLC
3.85
(b)
05/16/25
Open
5,901,063
6,124,251
Municipal Bonds
Open/Demand
TD Securities (USA) LLC
3.85
(b)
05/16/25
Open
8,324,625
8,639,476
Municipal Bonds
Open/Demand
TD Securities (USA) LLC
3.85
(b)
05/16/25
Open
4,359,713
4,524,367
Municipal Bonds
Open/Demand
TD Securities (USA) LLC
3.85
(b)
05/16/25
Open
19,202,562
19,927,790
Municipal Bonds
Open/Demand
TD Securities (USA) LLC
3.85
(b)
05/16/25
Open
12,811,050
13,294,888
Municipal Bonds
Open/Demand
TD Securities (USA) LLC
3.85
(b)
05/16/25
Open
10,387,500
10,779,807
Municipal Bonds
Open/Demand
TD Securities (USA) LLC
3.85
(b)
05/16/25
Open
11,852,500
12,300,781
Municipal Bonds
Open/Demand
TD Securities (USA) LLC
3.85
(b)
05/16/25
Open
5,431,250
5,636,669
Municipal Bonds
Open/Demand
TD Securities (USA) LLC
3.85
(b)
05/16/25
Open
9,506,250
9,869,415
Municipal Bonds
Open/Demand
TD Securities (USA) LLC
3.85
(b)
05/16/25
Open
12,224,781
12,688,474
Municipal Bonds
Open/Demand
TD Securities (USA) LLC
3.85
05/29/25
Open
15,342,400
15,891,062
Municipal Bonds
Open/Demand
TD Securities (USA) LLC
3.85
(b)
06/26/25
Open
8,182,125
8,449,612
Municipal Bonds
Open/Demand
TD Securities (USA) LLC
3.85
(b)
09/09/25
Open
9,962,500
10,192,717
Municipal Bonds
Open/Demand
TD Securities (USA) LLC
3.85
(b)
09/10/25
Open
5,093,750
5,210,807
Municipal Bonds
Open/Demand
TD Securities (USA) LLC
3.85
(b)
09/18/25
Open
6,107,875
6,241,994
Municipal Bonds
Open/Demand
TD Securities (USA) LLC
3.85
(b)
09/18/25
Open
5,737,500
5,864,052
Municipal Bonds
Open/Demand
TD Securities (USA) LLC
3.85
(b)
09/24/25
Open
6,580,700
6,719,882
Municipal Bonds
Open/Demand
TD Securities (USA) LLC
3.85
(b)
09/30/25
Open
3,218,406
3,284,142
Municipal Bonds
Open/Demand
TD Securities (USA) LLC
3.85
(b)
11/03/25
Open
4,688,213
4,764,708
Municipal Bonds
Open/Demand
TD Securities (USA) LLC
3.85
(b)
11/03/25
Open
4,794,563
4,872,894
Municipal Bonds
Open/Demand
RBC Capital Markets, LLC
3.95
11/06/25
Open
694,025
705,302
Municipal Bonds
Open/Demand
TD Securities (USA) LLC
3.85
(b)
12/01/25
Open
8,671,425
8,785,442
Municipal Bonds
Open/Demand
TD Securities (USA) LLC
3.85
(b)
12/01/25
Open
6,436,363
6,520,992
Municipal Bonds
Open/Demand
RBC Capital Markets, LLC
3.79
(b)
12/31/25
Open
4,565,938
4,609,680
Corporate Bonds
Open/Demand
Barclays Bank PLC
3.74
(b)
01/29/26
Open
7,878,750
7,878,750
Corporate Bonds
Open/Demand
TD Securities (USA) LLC
3.85
(b)
02/02/26
Open
5,560,625
5,595,116
Municipal Bonds
Open/Demand
TD Securities (USA) LLC
3.85
(b)
03/02/26
Open
9,934,925
9,966,800
Municipal Bonds
Open/Demand
Barclays Bank PLC
3.74
03/12/26
04/09/26
10,319,537
10,340,979
Corporate Bonds
Up to 30 Days
Barclays Bank PLC
3.74
03/12/26
04/09/26
11,467,562
11,491,390
Corporate Bonds
Up to 30 Days
Barclays Bank PLC
3.74
03/13/26
04/09/26
8,658,000
8,675,090
Corporate Bonds
Up to 30 Days
TD Securities (USA) LLC
3.82
(b)
03/31/26
Open
4,693,750
4,694,248
Corporate Bonds
Open/Demand
 
 
 
$ 551,045,163
$ 568,444,173
 
 
(a)
Certain agreements have no stated maturity and can be terminated by either party at any time.
(b)
Variable rate security. Rate as of period end and maturity is the date the principal owed can be recovered through demand.
Schedule of Investments
7

Schedule of Investments (unaudited)(continued)
March 31, 2026
BlackRock Taxable Municipal Bond Trust (BBN)
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
343
06/18/26
$ 38,068
$ 619,027
U.S. Long Bond
577
06/18/26
65,562
2,136,721
 
$ 2,755,748
Fair Value Hierarchy as of Period End
Various inputs are used in determining the fair value of financial instruments at the measurement date. 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 that the Trust has the ability to access for identical assets or liabilities;
Level 2 – Inputs other than quoted prices included within Level 1 that are observable for the asset or liability, either directly or indirectly; and
Level 3 – Inputs that are unobservable and significant to the  entire fair value measurement for the asset or liability (including the Valuation Committee’s assumptions used in determining the fair value of 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 Valuation Committee in determining the price for Fair Valued Investments. Level 3 investments include equity or debt issued by privately held companies or funds that may not have a secondary market and/or may have a limited number of investors. The categorization of a value determined for financial instruments is based on the pricing transparency of the 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 financial instruments, refer to its most recent financial statements.
The following table summarizes the Trust’s financial instruments categorized in the fair value hierarchy.  The breakdown of the Trusts financial instruments into major categories is disclosed in the Schedule of Investments above.
 
Level 1
Level 2
Level 3
Total
Assets
Investments
Long-Term Investments
Corporate Bonds
$ 
$ 118,819,177
$ 
$ 118,819,177
Municipal Bonds
1,471,460,454
1,471,460,454
Warrants
45,646
45,646
Short-Term Securities
Money Market Funds
4,989,151
4,989,151
 
$4,989,151
$1,590,279,631
$45,646
$1,595,314,428
Derivative Financial Instruments(a)
Assets
Interest Rate Contracts
$ 2,755,748
$ 
$ 
$ 2,755,748
(a)
Derivative financial instruments are futures contracts. Futures contracts 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 amount or face value, including accrued interest, for financial reporting purposes. As of period end, reverse repurchase agreements of $568,444,173 are categorized as Level 2 within the fair value hierarchy.
Portfolio Abbreviation 
AGM
Assured Guaranty Municipal Corp.
AGM-CR
AGM Insured Custodial Receipt
AMT
Alternative Minimum Tax
Portfolio Abbreviation (continued)
ARB
Airport Revenue Bonds
BAB
Build America Bond
BAM
Build America Mutual Assurance Co.
8

Schedule of Investments (unaudited)(continued)
March 31, 2026
BlackRock Taxable Municipal Bond Trust (BBN)
Portfolio Abbreviation (continued)
BAM-TCRS
Build America Mutual Assurance Co. - Transferable
Custodial Receipts
CAB
Capital Appreciation Bonds
COP
Certificates of Participation
FHLMC
Federal Home Loan Mortgage Corp.
FNMA
Federal National Mortgage Association
GNMA
Government National Mortgage Association
GO
General Obligation Bonds
HUD SECT 8
U.S. Department of Housing and Urban Development
Section 8
M/F
Multi-Family
NPFGC
National Public Finance Guarantee Corp.
PSF
Permanent School Fund
RB
Revenue Bonds
S/F
Single-Family
SAP
Subject to Appropriations
TA
Tax Allocation
Schedule of Investments
9