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Form NSAR-B BLACKROCK MUNICIPAL SERI For: May 31

July 28, 2016 10:32 AM EDT
      PAGE  1
000 B000000 05/31/2016
000 C000000 0000799113
000 D000000 N
000 E000000 NF
000 F000000 Y
000 G000000 N
000 H000000 N
000 I000000 6.1
000 J000000 A
001 A000000 BLACKROCK MUNICIPAL SERIES TRUST
001 B000000 811-04802
001 C000000 8004417762
002 A000000 100 BELLEVUE PARKWAY
002 B000000 WILMINGTON
002 C000000 DE
002 D010000 19809
003  000000 N
004  000000 N
005  000000 N
006  000000 N
007 A000000 Y
007 B000000  1
007 C010100  1
007 C020100 BR Strategic Municipal Opportunities Fund
007 C030100 N
008 A000101 BLACKROCK ADVISORS, LLC
008 B000101 A
008 C000101 801-47710
008 D010101 WILMINGTON
008 D020101 DE
008 D030101 19809
011 A000101 BLACKROCK INVESTMENTS, LLC
011 B000101 8-48436
011 C010101 NEW YORK
011 C020101 NY
011 C030101 10022
012 A000101 BNY MELLON INVESTMENT SERVICING (US) INC.
012 B000101 84-01761
012 C010101 WILMINGTON
012 C020101 DE
012 C030101 19809
013 A000101 DELOITTE & TOUCHE LLP
013 B010101 BOSTON
013 B020101 MA
013 B030101 02116
014 A000101 BLACKROCK EXECUTION SERVICES
014 B000101 8-48719
014 A000102 BLACKROCK INVESTMENTS, LLC
014 B000102 8-48436
014 A000103 HARRIS WILLIAMS LLC
014 B000103 8-53380
      PAGE  2
014 A000104 PNC CAPITAL MARKETS, INC.
014 B000104 8-32493
014 A000105 PNC INVESTMENTS LLC
014 B000105 8-66195
014 A000106 SOLEBURY CAPITAL, LLC
014 B000106 8-67548
015 A000101 STATE STREET BANK AND TRUST COMPANY
015 B000101 C
015 C010101 BOSTON
015 C020101 MA
015 C030101 02110
015 E010101 X
018  000100 Y
019 A000100 Y
019 B000100  279
019 C000100 BLKRKADVSR
020 A000001 BANK OF AMERICA SECURITIES LLC
020 B000001 56-0906609
020 C000001    236
020 A000002 RBC CAPITAL MARKETS CORP
020 B000002 13-5033225
020 C000002     10
020 A000003 CITIGROUP GLOBAL MARKETS INC
020 B000003 11-2418191
020 C000003      3
020 A000004 JEFFERIES & COMPANY, INC.
020 B000004 95-2622990
020 C000004      3
021  000000      252
022 A000001 FFI INSTITUTIONAL TAX-EXEMPT FUND
022 B000001 22-2509978
022 C000001   2881009
022 D000001   3105422
022 A000002 BLACKROCK LIQUIDITY CASH FUNDS, MUNICASH
022 B000002 52-0983343
022 C000002   2235861
022 D000002   1823304
022 A000003 WELLS FARGO BANK NA
022 B000003 94-1347393
022 C000003   1743744
022 D000003   1078587
022 A000004 CITIGROUP GLOBAL MARKETS, INC.
022 B000004 11-2418191
022 C000004   1458096
022 D000004   1287060
022 A000005 BANK OF AMERICA SECURITIES LLC
022 B000005 56-0906609
022 C000005   1389063
022 D000005   1049346
022 A000006 BARCLAYS CAPITAL INC.
022 B000006 13-3297824
      PAGE  3
022 C000006    834606
022 D000006    964203
022 A000007 JPMORGAN SECURITIES INC
022 B000007 13-3299429
022 C000007    942791
022 D000007    717277
022 A000008 MORGAN STANLEY CO INCORPORATED
022 B000008 36-3145972
022 C000008    737732
022 D000008    710592
022 A000009 PERSHING LLC
022 B000009 13-2741729
022 C000009    619749
022 D000009    245610
022 A000010 GOLDMAN SACHS & CO
022 B000010 13-5108880
022 C000010    249218
022 D000010    188240
023 C000000   13823961
023 D000000   12201125
024  000100 N
026 A000000 N
026 B000000 N
026 C000000 N
026 D000000 Y
026 E000000 N
026 F000000 N
026 G010000 N
026 G020000 N
026 H000000 N
027  000000 Y
028 A010100    314535
028 A020100      6224
028 A030100         0
028 A040100     58558
028 B010100    176846
028 B020100      6361
028 B030100         0
028 B040100     75301
028 C010100    222053
028 C020100      6398
028 C030100         0
028 C040100     79423
028 D010100    196924
028 D020100      6164
028 D030100         0
028 D040100     68076
028 E010100    243611
028 E020100      6145
028 E030100         0
028 E040100     77418
      PAGE  4
028 F010100    232498
028 F020100      5915
028 F030100         0
028 F040100     65609
028 G010100   1386467
028 G020100     37207
028 G030100         0
028 G040100    424385
028 H000100    327932
029  000100 Y
030 A000100    675
030 B000100  4.25
030 C000100  0.00
031 A000100     47
031 B000100      0
032  000100    628
033  000100      0
034  000100 Y
035  000100    317
036 A000100 N
036 B000100      0
037  000100 N
038  000100      0
039  000100 N
040  000100 Y
041  000100 Y
042 A000100   0
042 B000100   0
042 C000100 100
042 D000100   0
042 E000100   0
042 F000100   0
042 G000100   0
042 H000100   0
043  000100   4571
044  000100      0
045  000100 Y
046  000100 N
047  000100 Y
048  000100  0.000
048 A010100  1000000
048 A020100 0.550
048 B010100  2000000
048 B020100 0.520
048 C010100  2000000
048 C020100 0.500
048 D010100  5000000
048 D020100 0.480
048 E010100        0
048 E020100 0.000
048 F010100        0
      PAGE  5
048 F020100 0.000
048 G010100        0
048 G020100 0.000
048 H010100        0
048 H020100 0.000
048 I010100        0
048 I020100 0.000
048 J010100        0
048 J020100 0.000
048 K010100 10000000
048 K020100 0.470
049  000100 N
050  000100 N
051  000100 N
052  000100 N
053 A000100 Y
053 B000100 Y
053 C000100 N
054 A000100 Y
054 B000100 Y
054 C000100 N
054 D000100 N
054 E000100 N
054 F000100 N
054 G000100 N
054 H000100 Y
054 I000100 N
054 J000100 Y
054 K000100 N
054 L000100 N
054 M000100 Y
054 N000100 N
055 A000100 N
055 B000100 N
056  000100 Y
057  000100 N
058 A000100 N
059  000100 Y
060 A000100 Y
060 B000100 Y
061  000100        0
062 A000100 Y
062 B000100   0.0
062 C000100   0.0
062 D000100   0.0
062 E000100   0.0
062 F000100   0.0
062 G000100   0.0
062 H000100   0.0
062 I000100   0.0
062 J000100   0.0
      PAGE  6
062 K000100   0.0
062 L000100   9.0
062 M000100   0.0
062 N000100   0.0
062 O000100 104.6
062 P000100   0.6
062 Q000100   0.0
062 R000100   0.3
063 A000100   0
063 B000100 17.3
064 A000100 Y
064 B000100 Y
065  000100 N
066 A000100 N
067  000100 N
068 A000100 N
068 B000100 N
069  000100 N
070 A010100 Y
070 A020100 N
070 B010100 N
070 B020100 N
070 C010100 Y
070 C020100 N
070 D010100 N
070 D020100 N
070 E010100 Y
070 E020100 Y
070 F010100 N
070 F020100 N
070 G010100 Y
070 G020100 N
070 H010100 N
070 H020100 N
070 I010100 N
070 I020100 N
070 J010100 Y
070 J020100 N
070 K010100 Y
070 K020100 Y
070 L010100 N
070 L020100 N
070 M010100 N
070 M020100 N
070 N010100 Y
070 N020100 N
070 O010100 Y
070 O020100 N
070 P010100 Y
070 P020100 N
070 Q010100 N
      PAGE  7
070 Q020100 N
070 R010100 Y
070 R020100 N
071 A000100   8053901
071 B000100   6640280
071 C000100   3826126
071 D000100  174
072 A000100 12
072 B000100   121870
072 C000100      849
072 D000100        0
072 E000100        0
072 F000100    19171
072 G000100      546
072 H000100        0
072 I000100     2148
072 J000100      148
072 K000100        0
072 L000100       54
072 M000100       72
072 N000100      490
072 O000100        0
072 P000100     3001
072 Q000100        0
072 R000100       51
072 S000100      152
072 T000100     4571
072 U000100        0
072 V000100        0
072 W000100      124
072 X000100    30528
072 Y000100     1857
072 Z000100    94048
072AA000100    12661
072BB000100        0
072CC010100   169736
072CC020100        0
072DD010100    66499
072DD020100    27108
072EE000100        0
073 A010100   0.0000
073 A020100   0.0000
073 B000100   0.0000
073 C000100   0.0000
074 A000100    16045
074 B000100        0
074 C000100        0
074 D000100  4846350
074 E000100        0
074 F000100        0
074 G000100        0
      PAGE  8
074 H000100        0
074 I000100   427969
074 J000100    56060
074 K000100       62
074 L000100    72247
074 M000100      135
074 N000100  5418868
074 O000100   383617
074 P000100     2234
074 Q000100        0
074 R010100        0
074 R020100        0
074 R030100        0
074 R040100   426988
074 S000100        0
074 T000100  4606029
074 U010100   271237
074 U020100   119469
074 V010100     0.00
074 V020100     0.00
074 W000100   0.0000
074 X000100    44788
074 Y000100  1532687
075 A000100        0
075 B000100  3680145
076  000100     0.00
077 A000000 Y
077 B000000 Y
077 D000000 N
077 O000000 Y
077 Q010000 N
077 Q020000 N
077 Q030000 N
078  000000 N
080 A000100 FEDERAL INSURANCE COMPANY
080 B000100 NATL UNION FIRE INS. CO. OF PITTSBURGH, PA
080 C000100    36875
081 A000100 Y
081 B000100  98
082 A000100 N
082 B000100        0
083 A000100 N
083 B000100        0
084 A000100 N
084 B000100        0
085 A000100 Y
085 B000100 N
086 A010000      0
086 A020000      0
086 B010000      0
086 B020000      0
      PAGE  9
086 C010000      0
086 C020000      0
086 D010000      0
086 D020000      0
086 E010000      0
086 E020000      0
086 F010000      0
086 F020000      0
SIGNATURE   NEAL J. ANDREWS
TITLE       CFO
 



            REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Shareholders of BlackRock California Municipal Opportunities Fund,
BlackRock New Jersey Municipal Bond Fund, BlackRock Pennsylvania Municipal Bond
Fund and BlackRock Strategic Municipal Opportunities and the Board of Trustees
of BlackRock California Municipal Series Trust, BlackRock Multi-State Municipal
Series Trust and BlackRock Municipal Series Trust:

In planning and performing our audits of the financial statements of BlackRock
California Municipal Opportunities Fund of BlackRock California Municipal
Series Trust, BlackRock New Jersey Municipal Bond Fund and BlackRock
Pennsylvania Municipal Bond Fund, two of the series constituting BlackRock
Multi-State Municipal Series Trust, and BlackRock Strategic Municipal
Opportunities Fund of BlackRock Municipal Series Trust (collectively, the
"Funds"), as of and for the year ended May 31, 2016, in accordance with the
standards of the Public Company Accounting Oversight Board (United States), we
considered the Funds' internal control over financial reporting, including
controls over safeguarding securities, as a basis for designing our auditing
procedures for the purpose of expressing our opinion on the financial
statements and to comply with the requirements of Form N-SAR, but not for the
purpose of expressing an opinion on the effectiveness of the Funds' internal
control over financial reporting. Accordingly, we express no such opinion.

The management of the Funds is responsible for establishing and maintaining
effective internal control over financial reporting. In fulfilling this
responsibility, estimates and judgments by management are required to assess
the expected benefits and related costs of controls. A funds's internal control
over financial reporting is a process designed to provide reasonable assurance
regarding the reliability of financial reporting and the preparation of
financial statements for external purposes in accordance with generally
accepted accounting principles. A fund's internal control over financial
reporting includes those policies and procedures that (1) pertain to the
maintenance of records that, in reasonable detail, accurately and fairly
reflect the transactions and dispositions of the assets of the fund; (2)
provide reasonable assurance that transactions are recorded as necessary to
permit preparation of financial statements in accordance with generally
accepted accounting principles, and that receipts and expenditures of the fund
are being made only in accordance with authorizations of management and
trustees of the fund; and (3) provide reasonable assurance regarding prevention
or timely detection of unauthorized acquisition, use, or disposition of a
fund's assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting
may not prevent or detect misstatements. Also, projections of any evaluation of
effectiveness to future periods are subject to the risk that controls may
become inadequate because of changes in conditions, or that the degree of
compliance with the policies or procedures may deteriorate.

A deficiency in internal control over financial reporting exists when the
design or operation of a control does not allow management or employees, in the
normal course of performing their assigned functions, to prevent or detect
misstatements on a timely basis. A material weakness is a deficiency, or a
combination of deficiencies, in internal control over financial reporting, such
that there is a reasonable possibility that a material misstatement of a fund's
annual or interim financial statements will not be prevented or detected on a
timely basis.

Our consideration of the Funds' internal control over financial reporting was
for the limited purpose described in the first paragraph and would not
necessarily disclose all deficiencies in internal control that might be
material weaknesses under standards established by the Public Company
Accounting Oversight Board (United States). However, we noted no deficiencies
in the Funds' internal control over financial reporting and their operation,
including controls for safeguarding securities that we consider to be a
material weakness, as defined above, as of May 31, 2016.



This report is intended solely for the information and use of management and
the Board of Trustees of BlackRock California Municipal Opportunities Fund of
BlackRock California Municipal Series Trust, BlackRock New Jersey Municipal
Bond Fund and BlackRock Pennsylvania Municipal Bond Fund, two of the series
constituting BlackRock Multi-State Municipal Series Trust, and BlackRock
Strategic Municipal Opportunities Fund of BlackRock Municipal Series Trusts,
and the Securities and Exchange Commission and is not intended to be and should
not be used by anyone other than these specified parties.

/s/ Deloitte & Touche LLP
Boston, Massachusetts
July 26, 2016



                                                           [LOGO OF BLACKROCK]


Rule 10f-3 Transaction Form

Acquisition of Securities During Affiliated Underwritings

PARTICIPATING FUNDS

.  U.S. Registered Funds (Name of Fund, Aladdin Ticker):
   ISHARES SHORT-TERM NATIONAL AMT-FREE MUNI BOND ETF (NAT0-5)
   BlackRock Short-Term Municipal Fund (BR-STMUNI)
   BlackRock Strategic Municipal Opportunities Fund of BlackRock Series Trust
   (BR-SMO-IG)

THE OFFERING

KEY CHARACTERISTICS (COMPLETE ALL FIELDS)

Date of Offering
Commencement:              08-14-2015

Security Type:             BND/MUNI

Issuer                     City of Charlotte, North Carolina Water and Sewer
                           System Refunding Revenue Bonds, Series 2015

Selling Underwriter        Wells Fargo Securities

Affiliated Underwriter(s)  [X] PNC Capital Markets LLC
                           [_] Other:

List of Underwriter(s)     Bank of America Merrill Lynch, PNC Capital Markets
                           LLC, J.P. Morgan Securities LLC, Wells Fargo
                           Securities

TRANSACTION DETAILS

Date of Purchase  08-14-2015

Purchase Price/Share    $111.517  Total Commission, Spread or Profit
(PER SHARE / % OF PAR)     (0.89)
                        $117.007
                           (1.36)                                         0.375
                        $119.286
                           (2.68)
                        $116.471
                           (3.05)

1.   Aggregate Principal Amount Purchased (a+b)                     $71,320,000

     a.  US Registered Funds
         (Appendix attached with individual Fund/Client
         purchase)                                                  $14,500,000

     b.  Other BlackRock Clients                                    $56,820,000

                                                                    Page 1 of 2



Rule 10f-3 Report - Definitions                            [LOGO OF BLACKROCK]


2. Aggregate Principal Amount of Offering                          $459,585,000

FUND RATIO
[Divide Sum of #1 by #2]
Must be less than 0.25                                                   0.1552

LEGAL REQUIREMENTS

OFFERING TYPE (CHECK ONE)

The securities fall into one of the following transaction types (see
Definitions):

[_]  U.S. Registered Public Offering. [Issuer must have 3 years of continuous
                                      operations]
[_]  Eligible Rule 144A Offering..... [Issuer must have 3 years of continuous
                                      operations]
[X]  Eligible Municipal Securities
[_]  Eligible Foreign Offering....... [Issuer must have 3 years of continuous
                                      operations]
[_]  Government Securities Offering.. [Issuer must have 3 years of continuous
                                      operations]

TIMING AND PRICE (CHECK ONE OR BOTH)

[X]  The securities were purchased before the end of the first day on which any
     sales were made, at a price that was not more than the price paid by each
     other purchaser of securities in that offering or in any concurrent
     offering of the securities; and

[_]  If the securities are offered for subscription upon exercise of rights,
     the securities were purchased on or before the fourth day before the day
     on which the rights offering terminated.

FIRM COMMITMENT OFFERING (CHECK ONE)

[X] YES  The securities were offered pursuant to an underwriting or similar
[_] NO   agreement under which the underwriters were committed to purchase all
         of the securities being offered, except those purchased by others
         pursuant to a rights offering, if the underwriters purchased any of
         the securities.

NO BENEFIT TO AFFILIATED UNDERWRITER (CHECK ONE)

[X] YES  No affiliated underwriter was a direct or indirect participant in, or
[_] NO   benefited directly or indirectly from, the transaction.

Completed by:  Dipankar Banerjee               Date:  09-09-2015
               ------------------------------
               Global Syndicate Team Member

Approved by:   Steven DeLaura                  Date:  09-09-2015
               ------------------------------
               Global Syndicate Team Member



Rule 10f-3 Report - Definitions                            [LOGO OF BLACKROCK]


DEFINITIONS

TERM                       DEFINITION

Fund Ratio                 Number appearing at the bottom of page 1 of 2 of
                           the Rule 10f-3 Report form. It is the sum of the
                           Funds' participation in the offering by the Funds
                           and other accounts managed by BlackRock divided by
                           the total amount of the offering.

Eligible Foreign Offering  The securities are sold in a public offering
                           conducted under the laws of a country other than
                           the United States and

                           (a)  the offering is subject to regulation in such
                                country by a "foreign financial regulatory
                                authority," as defined in Section 2(a)(50) of
                                the Investment Company Act of 1940;

                           (b)  the securities were offered at a fixed price
                                to all purchasers in the offering (except for
                                any rights to purchase securities that are
                                required by law to be granted to existing
                                security holders of the issuer);

                           (c)  financial statements, prepared and audited as
                                required or permitted by the appropriate
                                foreign financial regulatory authority in such
                                country, for the two years prior to the
                                offering, were made available to the public
                                and prospective purchasers in connection with
                                the offering; and

                           (d)  if the issuer is a "domestic issuer," i.e.,
                                other than a foreign government, a national of
                                any foreign country, or a corporation or other
                                organization incorporated or organized under
                                the laws of any foreign country, it (1) has a
                                class of securities registered pursuant to
                                section 12(b) or 12(g) of the Securities
                                Exchange Act of 1934 or is required to file
                                reports pursuant to section 15(d) of that act,
                                and (2) has filed all the material required to
                                be filed pursuant to section 13(a) or 15(d) of
                                that act for a period of at least 12 months
                                immediately preceding the sale of securities
                                (or for such shorter period that the issuer
                                was required to file such material)



Rule 10f-3 Report - Definitions                            [LOGO OF BLACKROCK]


TERM                           DEFINITION

Eligible Municipal Securities  The securities:

                               (a)  are direct obligations of, or obligations
                                    guaranteed as to principal or interest by,
                                    a State or any political subdivision
                                    thereof, or any agency or instrumentality
                                    of a State or any political subdivision
                                    thereof, or any municipal corporate
                                    instrumentality of one or more States, or
                                    any security which is an industrial
                                    development bond (as defined in section
                                    103(c)(2) of Title 26) the interest on
                                    which is excludable from gross income
                                    under certain provisions of the Internal
                                    Revenue Code;

                               (b)  are sufficiently liquid that they can be
                                    sold at or near their carrying value
                                    within a reasonably short period of time;
                                    and

                               (c)  either

                                   (1)  are subject to no greater than
                                        moderate credit risk; or

                                   (2)  if the issuer of the municipal
                                        securities, or the entity supplying
                                        the revenues or other payments from
                                        which the issue is to be paid, has
                                        been in continuous operation for less
                                        than three years, including the
                                        operation of any predecessors, the
                                        securities are subject to a minimal or
                                        low amount of credit risk.

                               Also, purchases of municipal securities may not
                               be designated as group sales or otherwise
                               allocated to the account of any prohibited
                               seller (i.e., an affiliated underwriter).

Eligible Rule 144A Offering    The securities are sold in an offering where

                               (a)  the securities are offered or sold in
                                    transactions exempt from registration
                                    under Section 4(2) of the Securities Act
                                    of 1933, Rule 144A thereunder, or Rules
                                    501-508 thereunder;

                               (b)  the securities were sold to persons that
                                    the seller and any person acting on behalf
                                    of the seller reasonably believe to
                                    include qualified institutional buyers, as
                                    defined in Rule 144A ("QIBs"); and

                               (c)  the seller and any person acting on behalf
                                    of the seller reasonably believe that the
                                    securities are eligible for resale to
                                    other QIBs pursuant to Rule 144A.

Government Securities          The security is issued or guaranteed as to
Offering                       principal or interest by the United States, or
                               by a person controlled or supervised by and
                               acting as an instrumentality of the Government
                               of the United States pursuant to authority
                               granted by the Congress of the United States;
                               or any certificate of deposit for any of the
                               foregoing.



Rule 10f-3 Report - Definitions                            [LOGO OF BLACKROCK]


TERM                    DEFINITION

U.S. Registered Public  The securities offered are registered under the
Offering.               Securities Act of 1933 that are being offered to the
                        public.



                                                           [LOGO OF BLACKROCK]


Rule 10f-3 Transaction Form

Acquisition of Securities During Affiliated Underwritings

PARTICIPATING FUNDS

.  U.S. Registered Funds (Name of Fund, Aladdin Ticker):
   BlackRock Strategic Municipal Opportunities Fund of BlackRock Series Trust
   (BR-SMO-IG)

THE OFFERING

KEY CHARACTERISTICS (COMPLETE ALL FIELDS)

Date of Offering
Commencement:              01-13-2016

Security Type:             BND/MUNI

Issuer                     City of Chicago General Obligation Refunding Bonds,
                           Series 2015C

Selling Underwriter        Citigroup Global Markets Inc.

Affiliated Underwriter(s)  [X] PNC Capital markets, LLC
                           [_]

List of Underwriter(s)     Citigroup Global Markets Inc., PNC Capital Markets
                           LLC, Cabrera Capital markets, LLC, Backstrom
                           McCarley Berry & Co., LLC, North South Capital LLC,
                           Harvestons Securities, Inc., Podesta & Co., Drexel
                           Hamilton, LLC

TRANSACTION DETAILS

Date of Purchase  01-13-2016

Purchase Price/Share    $101.405 Total Commission, Spread or Profit     0.5936%
(PER SHARE / % OF PAR)

1.   Aggregate Principal Amount Purchased (a+b)                    $  5,000,000

     a.  US Registered Funds
         (Appendix attached with individual Fund/Client
         purchase)                                                 $  5,000,000

     b.  Other BlackRock Clients                                            N/A

2.   Aggregate Principal Amount of Offering                        $500,000,000

FUND RATIO
[Divide Sum of #1 by #2]
Must be less than 0.25                                                     0.01

                                                                    Page 1 of 2



Rule 10f-3 Report - Definitions                            [LOGO OF BLACKROCK]


LEGAL REQUIREMENTS

OFFERING TYPE (CHECK ONE)

The securities fall into one of the following transaction types (see
Definitions):

[_]  U.S. Registered Public Offering. [Issuer must have 3 years of continuous
                                      operations]
[_]  Eligible Rule 144A Offering..... [Issuer must have 3 years of continuous
                                      operations]
[X]  Eligible Municipal Securities
[_]  Eligible Foreign Offering....... [Issuer must have 3 years of continuous
                                      operations]
[_]  Government Securities Offering.. [Issuer must have 3 years of continuous
                                      operations]

TIMING AND PRICE (CHECK ONE OR BOTH)

[X]  The securities were purchased before the end of the first day on which any
     sales were made, at a price that was not more than the price paid by each
     other purchaser of securities in that offering or in any concurrent
     offering of the securities; and

[_]  If the securities are offered for subscription upon exercise of rights,
     the securities were purchased on or before the fourth day before the day
     on which the rights offering terminated.

FIRM COMMITMENT OFFERING (CHECK ONE)

[X] YES  The securities were offered pursuant to an underwriting or similar
[_] NO   agreement under which the underwriters were committed to purchase all
         of the securities being offered, except those purchased by others
         pursuant to a rights offering, if the underwriters purchased any of
         the securities.

NO BENEFIT TO AFFILIATED UNDERWRITER (CHECK ONE)

[X] YES  No affiliated underwriter was a direct or indirect participant in, or
[_] NO   benefited directly or indirectly from, the transaction.

Completed by:  Dipankar Banerjee               Date:  02-04-2016
               ------------------------------
               Global Syndicate Team Member

Approved by:   Steven DeLaura                  Date:  02-04-2016
               ------------------------------
               Global Syndicate Team Member



Rule 10f-3 Report - Definitions                            [LOGO OF BLACKROCK]


DEFINITIONS

TERM                       DEFINITION

Fund Ratio                 Number appearing at the bottom of page 1 of 2 of
                           the Rule 10f-3 Report form. It is the sum of the
                           Funds' participation in the offering by the Funds
                           and other accounts managed by BlackRock divided by
                           the total amount of the offering.

Eligible Foreign Offering  The securities are sold in a public offering
                           conducted under the laws of a country other than
                           the United States and

                           (a)  the offering is subject to regulation in such
                                country by a "foreign financial regulatory
                                authority," as defined in Section 2(a)(50) of
                                the Investment Company Act of 1940;

                           (b)  the securities were offered at a fixed price
                                to all purchasers in the offering (except for
                                any rights to purchase securities that are
                                required by law to be granted to existing
                                security holders of the issuer);

                           (c)  financial statements, prepared and audited as
                                required or permitted by the appropriate
                                foreign financial regulatory authority in such
                                country, for the two years prior to the
                                offering, were made available to the public
                                and prospective purchasers in connection with
                                the offering; and

                           (d)  if the issuer is a "domestic issuer," i.e.,
                                other than a foreign government, a national of
                                any foreign country, or a corporation or other
                                organization incorporated or organized under
                                the laws of any foreign country, it (1) has a
                                class of securities registered pursuant to
                                section 12(b) or 12(g) of the Securities
                                Exchange Act of 1934 or is required to file
                                reports pursuant to section 15(d) of that act,
                                and (2) has filed all the material required to
                                be filed pursuant to section 13(a) or 15(d) of
                                that act for a period of at least 12 months
                                immediately preceding the sale of securities
                                (or for such shorter period that the issuer
                                was required to file such material)



Rule 10f-3 Report - Definitions                            [LOGO OF BLACKROCK]


TERM                           DEFINITION

Eligible Municipal Securities  The securities:

                               (a)  are direct obligations of, or obligations
                                    guaranteed as to principal or interest by,
                                    a State or any political subdivision
                                    thereof, or any agency or instrumentality
                                    of a State or any political subdivision
                                    thereof, or any municipal corporate
                                    instrumentality of one or more States, or
                                    any security which is an industrial
                                    development bond (as defined in section
                                    103(c)(2) of Title 26) the interest on
                                    which is excludable from gross income
                                    under certain provisions of the Internal
                                    Revenue Code;

                               (b)  are sufficiently liquid that they can be
                                    sold at or near their carrying value
                                    within a reasonably short period of time;
                                    and

                               (c)  either

                                   (1)  are subject to no greater than
                                        moderate credit risk; or

                                   (2)  if the issuer of the municipal
                                        securities, or the entity supplying
                                        the revenues or other payments from
                                        which the issue is to be paid, has
                                        been in continuous operation for less
                                        than three years, including the
                                        operation of any predecessors, the
                                        securities are subject to a minimal or
                                        low amount of credit risk.

                               Also, purchases of municipal securities may not
                               be designated as group sales or otherwise
                               allocated to the account of any prohibited
                               seller (i.e., an affiliated underwriter).

Eligible Rule 144A Offering    The securities are sold in an offering where

                               (a)  the securities are offered or sold in
                                    transactions exempt from registration
                                    under Section 4(2) of the Securities Act
                                    of 1933, Rule 144A thereunder, or Rules
                                    501-508 thereunder;

                               (b)  the securities were sold to persons that
                                    the seller and any person acting on behalf
                                    of the seller reasonably believe to
                                    include qualified institutional buyers, as
                                    defined in Rule 144A ("QIBs"); and

                               (c)  the seller and any person acting on behalf
                                    of the seller reasonably believe that the
                                    securities are eligible for resale to
                                    other QIBs pursuant to Rule 144A.

Government Securities          The security is issued or guaranteed as to
Offering                       principal or interest by the United States, or
                               by a person controlled or supervised by and
                               acting as an instrumentality of the Government
                               of the United States pursuant to authority
                               granted by the Congress of the United States;
                               or any certificate of deposit for any of the
                               foregoing.



Rule 10f-3 Report - Definitions                            [LOGO OF BLACKROCK]


TERM                    DEFINITION

U.S. Registered Public  The securities offered are registered under the
Offering.               Securities Act of 1933 that are being offered to the
                        public.



                                                           [LOGO OF BLACKROCK]


Rule 10f-3 Transaction Form

Acquisition of Securities During Affiliated Underwritings

PARTICIPATING FUNDS

.  U.S. Registered Funds (Name of Fund, Aladdin Ticker):
   ISHARES CORE U.S. AGGREGATE BOND ETF (ISHAGG)
   ISHARES INTERMEDIATE CREDIT BOND ETF (ISHICRED)
   ISHARES INTERMEDIATE GOVERNMENT/CREDIT BOND ETF (ISHIGOVCR)
   ISHARES IBOXX $ INVESTMENT GRADE CORPORATE BOND ETF (ISHINTOP)
   Multimanager Core Bond Portfolio (AXA-VIP)
   AZL Enhanced Bond Index Fund (AZ-CORE)
   BlackRock Allocation Target Shares: Series C Portfolio (BATSC)
   BlackRock Balanced Capital Portfolio (FI) (BCS_F)
   BlackRock Core Bond Portfolio (BR-CORE)
   BlackRock Funds, BlackRock Global Long/Short Credit Fund (BR-GC)
   BlackRock Investment Grade Bond Portfolio (BR-IG)
   BlackRock Multi Asset Income - Passive Fixed Income Portfolio (BR-INC-PFI)
   Strategic Income Opportunities Fund (BR-SIP)
   BlackRock Strategic Municipal Opportunities Fund of BlackRock Series Trust
   (BR-SMO-TAX)
   BlackRock Macro Themes Fund - Fixed Income Sleeve (BRMT-FI)
   BlackRock Total Return V.I. Portfolio (Ins - Var Ser) (BVA-BF)
   BlackRock Total Return Portfolio (Ins - Series) (BVA-TR)
   Metropolitan Series Fund, Inc.- BlackRock Bond Income Portfolio (MET-BI)
   Master Total Return Portfolio of Master Bond LLC (MF-BOND)
   U.S. Total Bond Index Master Portfolio (MIP_AGG)
   Advanced Series Trust - AST BlackRock/Loomis Sayles Bond Portfolio
   (SMF_PRUTR)
   UBS PACE Intermediate Fixed Income Investments Portfolio (UBS-PACE)

THE OFFERING

KEY CHARACTERISTICS (COMPLETE ALL FIELDS)

Date of Offering
Commencement:              10-16-2015

Security Type:             BND/CORP

Issuer                     The Goldman Sachs Group, Inc. (2025)

Selling Underwriter        Goldman, Sachs & Co.

Affiliated Underwriter(s)  [X] PNC Capital Markets LLC
                           [_] Other:

List of Underwriter(s)     Goldman, Sachs & Co., ABN AMRO Securities (USA)
                           LLC, BBVA Securities Inc., BNY Mellon Capital
                           Markets, LLC, Capital One Securities, Inc., Commerz
                           Markets LLC, DBS Bank Ltd., Fifth Third Securities,
                           Inc., ING Financial Markets LLC, KeyBanc Capital
                           Markets Inc., Lloyds Securities Inc., Mizuho
                           Securities USA Inc., Natixis Securities Americas
                           LLC, PNC Capital Markets LLC, RBC Capital Markets,
                           LLC, RBS Securities Inc., Santander Investment
                           Securities Inc., Scotia Capital (USA) Inc., SMBC
                           Nikko Securities

                                                                    Page 1 of 2



Rule 10f-3 Report - Definitions                            [LOGO OF BLACKROCK]

               America, Inc., Standard Chartered Bank, SunTrust
               Robinson Humphrey, Inc., TD Securities (USA) LLC,
               U.S. Bancorp Investments, Inc., Drexel Hamilton,
               LLC, Loop Capital Markets, LLC, Mischler Financial
               Group, Inc., Siebert Brandford Shank & Co., L.L.C.

TRANSACTION DETAILS

Date of Purchase  10-16-2015

Purchase Price/Share    $99.300 Total Commission, Spread or Profit       0.450%
(PER SHARE / % OF PAR)

1.   Aggregate Principal Amount Purchased (a+b)                  $   75,000,000

     a.  US Registered Funds
         (Appendix attached with individual Fund/Client
         purchase)                                               $   14,119,000

     b.  Other BlackRock Clients                                 $   60,881,000

2.   Aggregate Principal Amount of Offering                      $2,000,000,000

FUND RATIO
[Divide Sum of #1 by #2]
Must be less than 0.25                                                   0.0375



Rule 10f-3 Report - Definitions                            [LOGO OF BLACKROCK]


LEGAL REQUIREMENTS

OFFERING TYPE (CHECK ONE)

The securities fall into one of the following transaction types (see
Definitions):

[X]  U.S. Registered Public Offering. [Issuer must have 3 years of continuous
                                      operations]
[_]  Eligible Rule 144A Offering..... [Issuer must have 3 years of continuous
                                      operations]
[_]  Eligible Municipal Securities
[_]  Eligible Foreign Offering....... [Issuer must have 3 years of continuous
                                      operations]
[_]  Government Securities Offering.. [Issuer must have 3 years of continuous
                                      operations]

TIMING AND PRICE (CHECK ONE OR BOTH)

[X]  The securities were purchased before the end of the first day on which any
     sales were made, at a price that was not more than the price paid by each
     other purchaser of securities in that offering or in any concurrent
     offering of the securities; and

[_]  If the securities are offered for subscription upon exercise of rights,
     the securities were purchased on or before the fourth day before the day
     on which the rights offering terminated.

FIRM COMMITMENT OFFERING (CHECK ONE)

[X] YES  The securities were offered pursuant to an underwriting or similar
[_] NO   agreement under which the underwriters were committed to purchase all
         of the securities being offered, except those purchased by others
         pursuant to a rights offering, if the underwriters purchased any of
         the securities.

NO BENEFIT TO AFFILIATED UNDERWRITER (CHECK ONE)

[X] YES  No affiliated underwriter was a direct or indirect participant in, or
[_] NO   benefited directly or indirectly from, the transaction.

Completed by:  Dillip Behera                   Date:  10-20-2015
               ------------------------------
               Global Syndicate Team Member

Approved by:   Steven DeLaura                  Date:  10-20-2015
               ------------------------------
               Global Syndicate Team Member



Rule 10f-3 Report - Definitions                            [LOGO OF BLACKROCK]


DEFINITIONS

TERM                       DEFINITION

Fund Ratio                 Number appearing at the bottom of page 1 of 2 of
                           the Rule 10f-3 Report form. It is the sum of the
                           Funds' participation in the offering by the Funds
                           and other accounts managed by BlackRock divided by
                           the total amount of the offering.

Eligible Foreign Offering  The securities are sold in a public offering
                           conducted under the laws of a country other than
                           the United States and

                           (a)  the offering is subject to regulation in such
                                country by a "foreign financial regulatory
                                authority," as defined in Section 2(a)(50) of
                                the Investment Company Act of 1940;

                           (b)  the securities were offered at a fixed price
                                to all purchasers in the offering (except for
                                any rights to purchase securities that are
                                required by law to be granted to existing
                                security holders of the issuer);

                           (c)  financial statements, prepared and audited as
                                required or permitted by the appropriate
                                foreign financial regulatory authority in such
                                country, for the two years prior to the
                                offering, were made available to the public
                                and prospective purchasers in connection with
                                the offering; and

                           (d)  if the issuer is a "domestic issuer," i.e.,
                                other than a foreign government, a national of
                                any foreign country, or a corporation or other
                                organization incorporated or organized under
                                the laws of any foreign country, it (1) has a
                                class of securities registered pursuant to
                                section 12(b) or 12(g) of the Securities
                                Exchange Act of 1934 or is required to file
                                reports pursuant to section 15(d) of that act,
                                and (2) has filed all the material required to
                                be filed pursuant to section 13(a) or 15(d) of
                                that act for a period of at least 12 months
                                immediately preceding the sale of securities
                                (or for such shorter period that the issuer
                                was required to file such material)



Rule 10f-3 Report - Definitions                            [LOGO OF BLACKROCK]


TERM                           DEFINITION

Eligible Municipal Securities  The securities:

                               (a)  are direct obligations of, or obligations
                                    guaranteed as to principal or interest by,
                                    a State or any political subdivision
                                    thereof, or any agency or instrumentality
                                    of a State or any political subdivision
                                    thereof, or any municipal corporate
                                    instrumentality of one or more States, or
                                    any security which is an industrial
                                    development bond (as defined in section
                                    103(c)(2) of Title 26) the interest on
                                    which is excludable from gross income
                                    under certain provisions of the Internal
                                    Revenue Code;

                               (b)  are sufficiently liquid that they can be
                                    sold at or near their carrying value
                                    within a reasonably short period of time;
                                    and

                               (c)  either

                                   (1)  are subject to no greater than
                                        moderate credit risk; or

                                   (2)  if the issuer of the municipal
                                        securities, or the entity supplying
                                        the revenues or other payments from
                                        which the issue is to be paid, has
                                        been in continuous operation for less
                                        than three years, including the
                                        operation of any predecessors, the
                                        securities are subject to a minimal or
                                        low amount of credit risk.

                               Also, purchases of municipal securities may not
                               be designated as group sales or otherwise
                               allocated to the account of any prohibited
                               seller (i.e., an affiliated underwriter).

Eligible Rule 144A Offering    The securities are sold in an offering where

                               (a)  the securities are offered or sold in
                                    transactions exempt from registration
                                    under Section 4(2) of the Securities Act
                                    of 1933, Rule 144A thereunder, or Rules
                                    501-508 thereunder;

                               (b)  the securities were sold to persons that
                                    the seller and any person acting on behalf
                                    of the seller reasonably believe to
                                    include qualified institutional buyers, as
                                    defined in Rule 144A ("QIBs"); and

                               (c)  the seller and any person acting on behalf
                                    of the seller reasonably believe that the
                                    securities are eligible for resale to
                                    other QIBs pursuant to Rule 144A.

Government Securities          The security is issued or guaranteed as to
Offering                       principal or interest by the United States, or
                               by a person controlled or supervised by and
                               acting as an instrumentality of the Government
                               of the United States pursuant to authority
                               granted by the Congress of the United States;
                               or any certificate of deposit for any of the
                               foregoing.



Rule 10f-3 Report - Definitions                            [LOGO OF BLACKROCK]


TERM                    DEFINITION

U.S. Registered Public  The securities offered are registered under the
Offering.               Securities Act of 1933 that are being offered to the
                        public.



                                                           [LOGO OF BLACKROCK]


Rule 10f-3 Transaction Form

Acquisition of Securities During Affiliated Underwritings

PARTICIPATING FUNDS

.  U.S. Registered Funds (Name of Fund, Aladdin Ticker):
   BlackRock Strategic Municipal Opportunities Fund of BlackRock Series Trust
   (BR-SMO-HY)

THE OFFERING

KEY CHARACTERISTICS (COMPLETE ALL FIELDS)

Date of Offering
Commencement:              12-03-2015

Security Type:             BND/MUNI

Issuer                     Michigan Finance Authority local Government loan
                           Program Revenue Bonds, Series 2015-C

Selling Underwriter        Citigroup Global Markets Inc

Affiliated Underwriter(s)  [X] PNC Capital Markets LLC
                           [_] Other:

List of Underwriter(s)     Citigroup Global Markets Inc., Bank of America
                           Merrill Lynch, Barclays Capital Inc, J.P.Morgan
                           Securities LLC, PNC Capital Markets LLC, Loop
                           Capital Markets LLC, Piper Jaffray & Co.

TRANSACTION DETAILS

Date of Purchase  12-03-2015

 Purchase Price/Share    $110.711 Total Commission, Spread or Profit      0.493
 (PER SHARE / % OF PAR)  $110.287

1.   Aggregate Principal Amount Purchased (a+b)                    $  9,000,000

     a.  US Registered Funds
         (Appendix attached with individual Fund/Client
         purchase)                                                 $  8,000,000

     b.  Other BlackRock Clients                                      1,000,000

2. Aggregate Principal Amount of Offering                          $197,660,000

FUND RATIO
[Divide Sum of #1 by #2]
Must be less than 0.25                                                  0.04553

                                                                    Page 1 of 2



Rule 10f-3 Report - Definitions                            [LOGO OF BLACKROCK]


LEGAL REQUIREMENTS

OFFERING TYPE (CHECK ONE)

The securities fall into one of the following transaction types (see
Definitions):

[_]  U.S. Registered Public Offering. [Issuer must have 3 years of continuous
                                      operations]
[_]  Eligible Rule 144A Offering..... [Issuer must have 3 years of continuous
                                      operations]
[X]  Eligible Municipal Securities
[_]  Eligible Foreign Offering....... [Issuer must have 3 years of continuous
                                      operations]
[_]  Government Securities Offering.. [Issuer must have 3 years of continuous
                                      operations]

TIMING AND PRICE (CHECK ONE OR BOTH)

[X]  The securities were purchased before the end of the first day on which any
     sales were made, at a price that was not more than the price paid by each
     other purchaser of securities in that offering or in any concurrent
     offering of the securities; and

[_]  If the securities are offered for subscription upon exercise of rights,
     the securities were purchased on or before the fourth day before the day
     on which the rights offering terminated.

FIRM COMMITMENT OFFERING (CHECK ONE)

[X] YES  The securities were offered pursuant to an underwriting or similar
[_] NO   agreement under which the underwriters were committed to purchase all
         of the securities being offered, except those purchased by others
         pursuant to a rights offering, if the underwriters purchased any of
         the securities.

NO BENEFIT TO AFFILIATED UNDERWRITER (CHECK ONE)

[X] YES  No affiliated underwriter was a direct or indirect participant in, or
[_] NO   benefited directly or indirectly from, the transaction.

Completed by:  Dipankar Banerjee               Date:  12-05-2015
               ------------------------------
               Global Syndicate Team Member

Approved by:   Steven Delaura                  Date:  12-05-2015
               ------------------------------
               Global Syndicate Team Member



Rule 10f-3 Report - Definitions                            [LOGO OF BLACKROCK]


DEFINITIONS

TERM                       DEFINITION

Fund Ratio                 Number appearing at the bottom of page 1 of 2 of
                           the Rule 10f-3 Report form. It is the sum of the
                           Funds' participation in the offering by the Funds
                           and other accounts managed by BlackRock divided by
                           the total amount of the offering.

Eligible Foreign Offering  The securities are sold in a public offering
                           conducted under the laws of a country other than
                           the United States and

                           (a)  the offering is subject to regulation in such
                                country by a "foreign financial regulatory
                                authority," as defined in Section 2(a)(50) of
                                the Investment Company Act of 1940;

                           (b)  the securities were offered at a fixed price
                                to all purchasers in the offering (except for
                                any rights to purchase securities that are
                                required by law to be granted to existing
                                security holders of the issuer);

                           (c)  financial statements, prepared and audited as
                                required or permitted by the appropriate
                                foreign financial regulatory authority in such
                                country, for the two years prior to the
                                offering, were made available to the public
                                and prospective purchasers in connection with
                                the offering; and

                           (d)  if the issuer is a "domestic issuer," i.e.,
                                other than a foreign government, a national of
                                any foreign country, or a corporation or other
                                organization incorporated or organized under
                                the laws of any foreign country, it (1) has a
                                class of securities registered pursuant to
                                section 12(b) or 12(g) of the Securities
                                Exchange Act of 1934 or is required to file
                                reports pursuant to section 15(d) of that act,
                                and (2) has filed all the material required to
                                be filed pursuant to section 13(a) or 15(d) of
                                that act for a period of at least 12 months
                                immediately preceding the sale of securities
                                (or for such shorter period that the issuer
                                was required to file such material)



Rule 10f-3 Report - Definitions                            [LOGO OF BLACKROCK]


TERM                           DEFINITION

Eligible Municipal Securities  The securities:

                               (a)  are direct obligations of, or obligations
                                    guaranteed as to principal or interest by,
                                    a State or any political subdivision
                                    thereof, or any agency or instrumentality
                                    of a State or any political subdivision
                                    thereof, or any municipal corporate
                                    instrumentality of one or more States, or
                                    any security which is an industrial
                                    development bond (as defined in section
                                    103(c)(2) of Title 26) the interest on
                                    which is excludable from gross income
                                    under certain provisions of the Internal
                                    Revenue Code;

                               (b)  are sufficiently liquid that they can be
                                    sold at or near their carrying value
                                    within a reasonably short period of time;
                                    and

                               (c)  either

                                   (1)  are subject to no greater than
                                        moderate credit risk; or

                                   (2)  if the issuer of the municipal
                                        securities, or the entity supplying
                                        the revenues or other payments from
                                        which the issue is to be paid, has
                                        been in continuous operation for less
                                        than three years, including the
                                        operation of any predecessors, the
                                        securities are subject to a minimal or
                                        low amount of credit risk.

                               Also, purchases of municipal securities may not
                               be designated as group sales or otherwise
                               allocated to the account of any prohibited
                               seller (i.e., an affiliated underwriter).

Eligible Rule 144A Offering    The securities are sold in an offering where

                               (a)  the securities are offered or sold in
                                    transactions exempt from registration
                                    under Section 4(2) of the Securities Act
                                    of 1933, Rule 144A thereunder, or Rules
                                    501-508 thereunder;

                               (b)  the securities were sold to persons that
                                    the seller and any person acting on behalf
                                    of the seller reasonably believe to
                                    include qualified institutional buyers, as
                                    defined in Rule 144A ("QIBs"); and

                               (c)  the seller and any person acting on behalf
                                    of the seller reasonably believe that the
                                    securities are eligible for resale to
                                    other QIBs pursuant to Rule 144A.

Government Securities          The security is issued or guaranteed as to
Offering                       principal or interest by the United States, or
                               by a person controlled or supervised by and
                               acting as an instrumentality of the Government
                               of the United States pursuant to authority
                               granted by the Congress of the United States;
                               or any certificate of deposit for any of the
                               foregoing.



Rule 10f-3 Report - Definitions                            [LOGO OF BLACKROCK]


TERM                    DEFINITION

U.S. Registered Public  The securities offered are registered under the
Offering.               Securities Act of 1933 that are being offered to the
                        public.



                                                           [LOGO OF BLACKROCK]


Rule 10f-3 Transaction Form

Acquisition of Securities During Affiliated Underwritings

PARTICIPATING FUNDS

.  U.S. Registered Funds (Name of Fund, Aladdin Ticker):
   ISHARES IBONDS SEP 2018 AMT-FREE MUNI BOND ETF (IMUN18)
   ISHARES NATIONAL AMT-FREE MUNI BOND ETF (ISHMUNI)
   ISHARES SHORT-TERM NATIONAL AMT-FREE MUNI BOND ETF (NAT0-5)
   ISHARES IBONDS SEP 2019 AMT-FREE MUNI BOND ETF (IMUN19)
   ISHARES IBONDS SEP 2020 AMT-FREE MUNI BOND ETF (IMUN20)
   ISHARES NATIONAL AMT-FREE MUNI BOND ETF (ISHMUNI)
   ISHARES NEW YORK AMT-FREE MUNI BOND ETF (ISHNY)
   BlackRock Strategic Municipal Opportunities Fund of BlackRock Series Trust
   (BR-SMO-IG)
   BlackRock New York Municipal 2018 Term Trust (BLH)
   BlackRock New York Municipal Opportunities Fund of BlackRock Multi-State Mu
   (BR-NYMO)
   BlackRock Muni Intermediate Duration Fund, Inc. (MUI)
   BlackRock New York Municipal Income Trust II (BFY)

THE OFFERING

KEY CHARACTERISTICS (COMPLETE ALL FIELDS)

Date of Offering
Commencement:              08/03/15

Security Type:             BND/MUNI

Issuer                     The City of New York, General Obligation Bonds,
                           Fiscal 2016 Series A

Selling Underwriter        Siebert Brandford Shank & Co., Bank of America
                           Merrill Lynch

Affiliated Underwriter(s)  [X] PNC Capital Markets LLC
                           [_] Other:

List of Underwriter(s)     Siebert Brandford Shank & Co., Bank of America
                           Merrill Lynch, Citigroup Global Markets Inc.,
                           Jefferies LLC, J.P. Morgan Securities LLC, Morgan
                           Stanley & Co. LLC, Barclays Capital Inc., Fidelity
                           Capital Markets, Goldman, Sachs & Co., Janney
                           Montgomery Scott LLC, Lebenthal & Company LLC, Loop
                           Capital Markets, PNC Capital Markets LLC, Ramirez &
                           Co., Inc., Raymond James & Associates, Inc., RBC
                           Capital Markets, Rice Financial Products Company,
                           Roosevelt & Cross, Inc., Southwest Securities,
                           Inc., Wells Fargo Securities, Blaylock Beal Van,
                           LLC, Cabrera Capital Markets, LLC, Drexel Hamilton,
                           LLC, TD Securities (USA) LLC

                                                                    Page 1 of 2



Rule 10f-3 Report - Definitions                            [LOGO OF BLACKROCK]


TRANSACTION DETAILS

Date of Purchase  08-03-2015

Purchase Price/Share    $108.445  Total Commission, Spread or Profit      0.455
(PER SHARE / % OF PAR)     (0.57)
                        $111.600
                           (1.02)
                        $114.217
                           (1.31)
                        $116.222
                           (1.59)
                        $118.634
                           (2.84)
                        $116.649
                           (3.05)
                        $115.996
                           (3.12)

1.   Aggregate Principal Amount Purchased (a+b)                    $ 63,575,000

     a.  US Registered Funds
         (Appendix attached with individual Fund/Client
         purchase)                                                 $ 44,965,000

     b.  Other BlackRock Clients                                   $ 18.610,000

2.   Aggregate Principal Amount of Offering                        $645,765,000

FUND RATIO
[Divide Sum of #1 by #2]
Must be less than 0.25                                                  0.09845



Rule 10f-3 Report - Definitions                            [LOGO OF BLACKROCK]

LEGAL REQUIREMENTS

OFFERING TYPE (CHECK ONE)

The securities fall into one of the following transaction types (see
Definitions):

[_]  U.S. Registered Public Offering. [Issuer must have 3 years of continuous
                                      operations]
[_]  Eligible Rule 144A Offering..... [Issuer must have 3 years of continuous
                                      operations]
[X]  Eligible Municipal Securities
[_]  Eligible Foreign Offering....... [Issuer must have 3 years of continuous
                                      operations]
[_]  Government Securities Offering.. [Issuer must have 3 years of continuous
                                      operations]

TIMING AND PRICE (CHECK ONE OR BOTH)

[X]  The securities were purchased before the end of the first day on which any
     sales were made, at a price that was not more than the price paid by each
     other purchaser of securities in that offering or in any concurrent
     offering of the securities; and

[_]  If the securities are offered for subscription upon exercise of rights,
     the securities were purchased on or before the fourth day before the day
     on which the rights offering terminated.

FIRM COMMITMENT OFFERING (CHECK ONE)

[X] YES  The securities were offered pursuant to an underwriting or similar
[_] NO   agreement under which the underwriters were committed to purchase all
         of the securities being offered, except those purchased by others
         pursuant to a rights offering, if the underwriters purchased any of
         the securities.

NO BENEFIT TO AFFILIATED UNDERWRITER (CHECK ONE)

[X] YES  No affiliated underwriter was a direct or indirect participant in, or
[_] NO   benefited directly or indirectly from, the transaction.

Completed by:  Dillip Behera                   Date:  08-19-2015
               ------------------------------
               Global Syndicate Team Member

Approved by:   Steven DeLaura                  Date:  08-19-2015
               ------------------------------
               Global Syndicate Team Member



Rule 10f-3 Report - Definitions                            [LOGO OF BLACKROCK]


DEFINITIONS

TERM                       DEFINITION

Fund Ratio                 Number appearing at the bottom of page 1 of 2 of
                           the Rule 10f-3 Report form. It is the sum of the
                           Funds' participation in the offering by the Funds
                           and other accounts managed by BlackRock divided by
                           the total amount of the offering.

Eligible Foreign Offering  The securities are sold in a public offering
                           conducted under the laws of a country other than
                           the United States and

                           (a)  the offering is subject to regulation in such
                                country by a "foreign financial regulatory
                                authority," as defined in Section 2(a)(50) of
                                the Investment Company Act of 1940;

                           (b)  the securities were offered at a fixed price
                                to all purchasers in the offering (except for
                                any rights to purchase securities that are
                                required by law to be granted to existing
                                security holders of the issuer);

                           (c)  financial statements, prepared and audited as
                                required or permitted by the appropriate
                                foreign financial regulatory authority in such
                                country, for the two years prior to the
                                offering, were made available to the public
                                and prospective purchasers in connection with
                                the offering; and

                           (d)  if the issuer is a "domestic issuer," i.e.,
                                other than a foreign government, a national of
                                any foreign country, or a corporation or other
                                organization incorporated or organized under
                                the laws of any foreign country, it (1) has a
                                class of securities registered pursuant to
                                section 12(b) or 12(g) of the Securities
                                Exchange Act of 1934 or is required to file
                                reports pursuant to section 15(d) of that act,
                                and (2) has filed all the material required to
                                be filed pursuant to section 13(a) or 15(d) of
                                that act for a period of at least 12 months
                                immediately preceding the sale of securities
                                (or for such shorter period that the issuer
                                was required to file such material)



Rule 10f-3 Report - Definitions                            [LOGO OF BLACKROCK]


TERM                           DEFINITION

Eligible Municipal Securities  The securities:

                               (a)  are direct obligations of, or obligations
                                    guaranteed as to principal or interest
                                    by, a State or any political subdivision
                                    thereof, or any agency or instrumentality
                                    of a State or any political subdivision
                                    thereof, or any municipal corporate
                                    instrumentality of one or more States, or
                                    any security which is an industrial
                                    development bond (as defined in section
                                    103(c)(2) of Title 26) the interest on
                                    which is excludable from gross income
                                    under certain provisions of the Internal
                                    Revenue Code;

                               (b)  are sufficiently liquid that they can be
                                    sold at or near their carrying value
                                    within a reasonably short period of time;
                                    and

                               (c)  either

                                    (1)  are subject to no greater than
                                         moderate credit risk; or

                                    (2)  if the issuer of the municipal
                                         securities, or the entity supplying
                                         the revenues or other payments from
                                         which the issue is to be paid, has
                                         been in continuous operation for
                                         less than three years, including the
                                         operation of any predecessors, the
                                         securities are subject to a minimal
                                         or low amount of credit risk.

                               Also, purchases of municipal securities may
                               not be designated as group sales or otherwise
                               allocated to the account of any prohibited
                               seller (i.e., an affiliated underwriter).

Eligible Rule 144A Offering    The securities are sold in an offering where

                               (a)  the securities are offered or sold in
                                    transactions exempt from registration
                                    under Section 4(2) of the Securities Act
                                    of 1933, Rule 144A thereunder, or Rules
                                    501-508 thereunder;

                               (b)  the securities were sold to persons that
                                    the seller and any person acting on
                                    behalf of the seller reasonably believe
                                    to include qualified institutional
                                    buyers, as defined in Rule 144A ("QIBs");
                                    and

                               (c)  the seller and any person acting on
                                    behalf of the seller reasonably believe
                                    that the securities are eligible for
                                    resale to other QIBs pursuant to
                                    Rule 144A.

Government Securities          The security is issued or guaranteed as to
Offering                       principal or interest by the United States, or
                               by a person controlled or supervised by and
                               acting as an instrumentality of the Government
                               of the United States pursuant to authority
                               granted by the Congress of the United States;
                               or any certificate of deposit for any of the
                               foregoing.



Rule 10f-3 Report - Definitions                            [LOGO OF BLACKROCK]


TERM                    DEFINITION

U.S. Registered Public  The securities offered are registered under the
Offering.               Securities Act of 1933 that are being offered to the
                        public.




                                                           [LOGO OF BLACKROCK]


Rule 10f-3 Transaction Form

Acquisition of Securities During Affiliated Underwritings

PARTICIPATING FUNDS

.  U.S. Registered Funds (Name of Fund, Aladdin Ticker):
   BlackRock Strategic Municipal Opportunities Fund of BlackRock Series Trust
   (BR-SMO-IG)

THE OFFERING

KEY CHARACTERISTICS (COMPLETE ALL FIELDS)

Date of Offering           02-09-2016
Commencement:

Security Type:             BND/MUNI

Issuer                     State of Wisconsin General Obligation Refunding
                           Bonds 2016-1

Selling Underwriter        Bank of America Merrill Lynch

Affiliated Underwriter(s)  [X] PNC Capital markets, LLC
                           [_]

List of Underwriter(s)     Bank of America Merrill Lynch, Ramirez & Co.,
                           Inc., PNC Capital Markets LLC, Stifel, Nicolaus &
                           Company, Inc., Robert W. Baird & Co., Inc

TRANSACTION DETAILS

Date of Purchase  02-09-2016

                                                           
Purchase Price/Share    $118.618  Total Commission, Spread or
(PER SHARE / % OF PAR)  $121.724  Profit                                   0.401

1.   Aggregate Principal Amount Purchased (a+b)                     $ 46,285,000

    a. US Registered Funds
       (Appendix attached with individual Fund/Client purchase)     $ 10,800,000

    b. Other BlackRock Clients                                      $ 35,485,000

2. Aggregate Principal Amount of Offering                           $295,225,000

FUND RATIO [Divide Sum of #1 by #2] Must be less than 0.25               0.15678
Page 1 of 2 Rule 10f-3 Report - Definitions [LOGO OF BLACKROCK] LEGAL REQUIREMENTS OFFERING TYPE (CHECK ONE) The securities fall into one of the following transaction types (see Definitions): [_] U.S. Registered Public Offering. [Issuer must have 3 years of continuous operations] [_] Eligible Rule 144A Offering..... [Issuer must have 3 years of continuous operations] [X] Eligible Municipal Securities [_] Eligible Foreign Offering....... [Issuer must have 3 years of continuous operations] [_] Government Securities Offering.. [Issuer must have 3 years of continuous operations] TIMING AND PRICE (CHECK ONE OR BOTH) [X] The securities were purchased before the end of the first day on which any sales were made, at a price that was not more than the price paid by each other purchaser of securities in that offering or in any concurrent offering of the securities; and [_] If the securities are offered for subscription upon exercise of rights, the securities were purchased on or before the fourth day before the day on which the rights offering terminated. FIRM COMMITMENT OFFERING (CHECK ONE) [X] YES The securities were offered pursuant to an underwriting or similar [_] NO agreement under which the underwriters were committed to purchase all of the securities being offered, except those purchased by others pursuant to a rights offering, if the underwriters purchased any of the securities. NO BENEFIT TO AFFILIATED UNDERWRITER (CHECK ONE) [X] YES No affiliated underwriter was a direct or indirect participant in, or [_] NO benefited directly or indirectly from, the transaction. Completed by: Dipankar Banerjee Date: 02-15-2016 ------------------------------ Global Syndicate Team Member Approved by: Steven DeLaura Date: 02-15-2016 ------------------------------ Global Syndicate Team Member Rule 10f-3 Report - Definitions [LOGO OF BLACKROCK] DEFINITIONS TERM DEFINITION Fund Ratio Number appearing at the bottom of page 1 of 2 of the Rule 10f-3 Report form. It is the sum of the Funds' participation in the offering by the Funds and other accounts managed by BlackRock divided by the total amount of the offering. Eligible Foreign Offering The securities are sold in a public offering conducted under the laws of a country other than the United States and (a) the offering is subject to regulation in such country by a "foreign financial regulatory authority," as defined in Section 2(a)(50) of the Investment Company Act of 1940; (b) the securities were offered at a fixed price to all purchasers in the offering (except for any rights to purchase securities that are required by law to be granted to existing security holders of the issuer); (c) financial statements, prepared and audited as required or permitted by the appropriate foreign financial regulatory authority in such country, for the two years prior to the offering, were made available to the public and prospective purchasers in connection with the offering; and (d) if the issuer is a "domestic issuer," i.e., other than a foreign government, a national of any foreign country, or a corporation or other organization incorporated or organized under the laws of any foreign country, it (1) has a class of securities registered pursuant to section 12(b) or 12(g) of the Securities Exchange Act of 1934 or is required to file reports pursuant to section 15(d) of that act, and (2) has filed all the material required to be filed pursuant to section 13(a) or 15(d) of that act for a period of at least 12 months immediately preceding the sale of securities (or for such shorter period that the issuer was required to file such material) Rule 10f-3 Report - Definitions [LOGO OF BLACKROCK] TERM DEFINITION Eligible Municipal Securities The securities: (a) are direct obligations of, or obligations guaranteed as to principal or interest by, a State or any political subdivision thereof, or any agency or instrumentality of a State or any political subdivision thereof, or any municipal corporate instrumentality of one or more States, or any security which is an industrial development bond (as defined in section 103(c)(2) of Title 26) the interest on which is excludable from gross income under certain provisions of the Internal Revenue Code; (b) are sufficiently liquid that they can be sold at or near their carrying value within a reasonably short period of time; and (c) either (1) are subject to no greater than moderate credit risk; or (2) if the issuer of the municipal securities, or the entity supplying the revenues or other payments from which the issue is to be paid, has been in continuous operation for less than three years, including the operation of any predecessors, the securities are subject to a minimal or low amount of credit risk. Also, purchases of municipal securities may not be designated as group sales or otherwise allocated to the account of any prohibited seller (i.e., an affiliated underwriter). Eligible Rule 144A Offering The securities are sold in an offering where (a) the securities are offered or sold in transactions exempt from registration under Section 4(2) of the Securities Act of 1933, Rule 144A thereunder, or Rules 501-508 thereunder; (b) the securities were sold to persons that the seller and any person acting on behalf of the seller reasonably believe to include qualified institutional buyers, as defined in Rule 144A ("QIBs"); and (c) the seller and any person acting on behalf of the seller reasonably believe that the securities are eligible for resale to other QIBs pursuant to Rule 144A. Government Securities The security is issued or guaranteed as to Offering principal or interest by the United States, or by a person controlled or supervised by and acting as an instrumentality of the Government of the United States pursuant to authority granted by the Congress of the United States; or any certificate of deposit for any of the foregoing. Rule 10f-3 Report - Definitions [LOGO OF BLACKROCK] TERM DEFINITION U.S. Registered Public The securities offered are registered under the Offering. Securities Act of 1933 that are being offered to the public.


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