SEC EDGAR · Insider purchase
BMN: BANK OF AMERICA CORP /DE/; MERRILL LYNCH, PIERCE, FENNER & SMITH INC. reported buying shares
1 reported purchase of non-derivative securities. Code P includes open-market and private purchases; it does not establish motive.
Follow BMN- Became public
- Oct 29, 2026
- Event / period date
- Oct 27, 2026
- Collected
- Nov 8, 2026, 4:27 PM EST
Why this is connected
This filing identifies BlackRock 2037 Municipal Target Term Trust as the issuer of the security. The company's SEC identifier connects it to BMN.
Reported transactions
BANK OF AMERICA CORP /DE/ (10% owner); MERRILL LYNCH, PIERCE, FENNER & SMITH INC. (10% owner)
3,070 shares · Common stock
Oct 27, 2026 · $22.98 per share
Value calculated from the reported shares and prices: $70,548.60.
Code P covers open-market and private purchases. Grants, option exercises, and tax withholding are excluded from purchase results. Read the source footnotes for ownership and pricing details.
Source evidence
Read the source excerpt or record
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<ownershipDocument>
<schemaVersion>X0609</schemaVersion>
<documentType>4</documentType>
<periodOfReport>2026-10-27</periodOfReport>
<notSubjectToSection16>0</notSubjectToSection16>
<issuer>
<issuerCik>0001832871</issuerCik>
<issuerName>BlackRock 2037 Municipal Target Term Trust</issuerName>
<issuerTradingSymbol>BMN</issuerTradingSymbol>
</issuer>
<reportingOwner>
<reportingOwnerId>
<rptOwnerCik>0000070858</rptOwnerCik>
<rptOwnerName>BANK OF AMERICA CORP /DE/</rptOwnerName>
</reportingOwnerId>
<reportingOwnerAddress>
<rptOwnerNonUSAddressFlag>false</rptOwnerNonUSAddressFlag>
<rptOwnerStreet1>BANK OF AMERICA CORPORATE CENTER</rptOwnerStreet1>
<rptOwnerStreet2>100 N TRYON ST</rptOwnerStreet2>
<rptOwnerCity>CHARLOTTE</rptOwnerCity>
<rptOwnerState>NC</rptOwnerState>
<rptOwnerZipCode>28255</rptOwnerZipCode>
<rptOwnerStateDescription></rptOwnerStateDescription>
</reportingOwnerAddress>
<reportingOwnerRelationship>
<isDirector>0</isDirector>
<isOfficer>0</isOfficer>
<isTenPercentOwner>1</isTenPercentOwner>
<isOther>0</isOther>
</reportingOwnerRelationship>
</reportingOwner>
<reportingOwner>
<reportingOwnerId>
<rptOwnerCik>0000728612</rptOwnerCik>
<rptOwnerName>MERRILL LYNCH, PIERCE, FENNER & SMITH INC.</rptOwnerName>
</reportingOwnerId>
<reportingOwnerAddress>
<rptOwnerNonUSAddressFlag>false</rptOwnerNonUSAddressFlag>
<rptOwnerStreet1>ONE BRYANT PARK</rptOwnerStreet1>
<rptOwnerStreet2></rptOwnerStreet2>
<rptOwnerCity>NEW YORK</rptOwnerCity>
<rptOwnerState>NY</rptOwnerState>
<rptOwnerZipCode>10036</rptOwnerZipCode>
<rptOwnerStateDescription></rptOwnerStateDescription>
</reportingOwnerAddress>
<reportingOwnerRelationship>
<isDirector>0</isDirector>
<isOfficer>0</isOfficer>
<isTenPercentOwner>1</isTenPercentOwner>
<isOther>0</isOther>
</reportingOwnerRelationship>
</reportingOwner>
<aff10b5One>0</aff10b5One>
<nonDerivativeTable>
<nonDerivativeTransaction>
<securityTitle>
<value>Common stock</value>
</securityTitle>
<transactionDate>
<value>2026-10-27</value>
</transactionDate>
<transactionCoding>
<transactionFormType>4</transactionFormType>
<transactionCode>P</transactionCode>
<equitySwapInvolved>0</equitySwapInvolved>
</transactionCoding>
<transactionTimeliness>
<value></value>
</transactionTimeliness>
<transactionAmounts>
<transactionShares>
<value>3070</value>
</transactionShares>
<transactionPricePerShare>
<value>22.98</value>
</transactionPricePerShare>
<transactionAcquiredDisposedCode>
<value>A</value>
</transactionAcquiredDisposedCode>
</transactionAmounts>
<postTransactionAmounts>
<sharesOwnedFollowingTransaction>
<value>3070</value>
</sharesOwnedFollowingTransaction>
</postTransactionAmounts>
<ownershipNature>
<directOrIndirectOwnership>
<value>I</value>
</directOrIndirectOwnership>
<natureOfOwnership>
<value>See Footnotes</value>
<footnoteId id="F1"/>
<footnoteId id="F2"/>
<footnoteId id="F3"/>
</natureOfOwnership>
</ownershipNature>
</nonDerivativeTransaction>
<nonDerivativeTransaction>
<securityTitle>
<value>Common stock</value>
</securityTitle>
<transactionDate>
<value>2026-10-27</value>
</transactionDate>
<transactionCoding>
<transactionFormType>4</transactionFormType>
<transactionCode>S</transactionCode>
<equitySwapInvolved>0</equitySwapInvolved>
</transactionCoding>
<transactionTimeliness>
<value></value>
</transactionTimeliness>
<transactionAmounts>
<transactionShares>
<value>302</value>
</transactionShares>
<transactionPricePerShare>
<value>22.165</value>
</transactionPricePerShare>
<transactionAcquiredDisposedCode>
<value>D</value>
</transactionAcquiredDisposedCode>
</transactionAmounts>
<postTransactionAmounts>
<sharesOwnedFollowingTransaction>
<value>2768</value>
</sharesOwnedFollowingTransaction>
</postTransactionAmounts>
<ownershipNature>
<directOrIndirectOwnership>
<value>I</value>
</directOrIndirectOwnership>
<natureOfOwnership>
<value>See Footnotes</value>
<footnoteId id="F1"/>
<footnoteId id="F2"/>
<footnoteId id="F3"/>
</natureOfOwnership>
</ownershipNature>
</nonDerivativeTransaction>
<nonDerivativeTransaction>
<securityTitle>
<value>Common stock</value>
</securityTitle>
<transactionDate>
<value>2026-10-27</value>
</transactionDate>
<transactionCoding>
<transactionFormType>4</transactionFormType>
<transactionCode>S</transactionCode>
<equitySwapInvolved>0</equitySwapInvolved>
</transactionCoding>
<transactionTimeliness>
<value></value>
</transactionTimeliness>
<transactionAmounts>
<transactionShares>
<value>1899</value>
</transactionShares>
<transactionPricePerShare>
<value>25.0837</value>
</transactionPricePerShare>
<transactionAcquiredDisposedCode>
<value>D</value>
</transactionAcquiredDisposedCode>
</transactionAmounts>
<postTransactionAmounts>
<sharesOwnedFollowingTransaction>
<value>869</value>
</sharesOwnedFollowingTransaction>
</postTransactionAmounts>
<ownershipNature>
<directOrIndirectOwnership>
<value>I</value>
</directOrIndirectOwnership>
<natureOfOwnership>
<value>See Footnotes</value>
<footnoteId id="F1"/>
<footnoteId id="F2"/>
<footnoteId id="F3"/>
</natureOfOwnership>
</ownershipNature>
</nonDerivativeTransaction>
<nonDerivativeTransaction>
<securityTitle>
<value>Common stock</value>
</securityTitle>
<transactionDate>
<value>2026-10-27</value>
</transactionDate>
<transactionCoding>
<transactionFormType>4</transactionFormType>
<transactionCode>S</transactionCode>
<equitySwapInvolved>0</equitySwapInvolved>
</transactionCoding>
<transactionTimeliness>
<value></value>
</transactionTimeliness>
<transactionAmounts>
<transactionShares>
<value>869</value>
</transactionShares>
<transactionPricePerShare>
<value>25.1607</value>
</transactionPricePerShare>
<transactionAcquiredDisposedCode>
<value>D</value>
</transactionAcquiredDisposedCode>
</transactionAmounts>
<postTransactionAmounts>
<sharesOwnedFollowingTransaction>
<value>0</value>
</sharesOwnedFollowingTransaction>
</postTransactionAmounts>
<ownershipNature>
<directOrIndirectOwnership>
<value>I</value>
</directOrIndirectOwnership>
<natureOfOwnership>
<value>See Footnotes</value>
<footnoteId id="F1"/>
<footnoteId id="F2"/>
<footnoteId id="F3"/>
</natureOfOwnership>
</ownershipNature>
</nonDerivativeTransaction>
</nonDerivativeTable>
<footnotes>
<footnote id="F1">This statement is jointly filed by Bank of America Corporation and Merrill Lynch, Pierce, Fenner & Smith Incorporated ("Merrill Lynch") (collectively, the "Reporting Persons"). Bank of America Corporation holds an indirect interest in the securities listed in this Report by virtue of its 100% ownership of its subsidiary Merrill Lynch. Each Reporting Person disclaims beneficial ownership of the securities reported herein except to the extent of its pecuniary interest therein, if any, and this report shall not be deemed an admission that any such Reporting Person is the beneficial owner of, or has any pecuniary interest in, such securities for purposes of Securities Exchange Act of 1934 (the "Exchange Act"), or for any other purpose.</footnote>
<footnote id="F2">Each Reporting Person declares that neither the filing of this statement nor anything herein shall be construed as an admission that such person is, for the purposes of Section13(d) of the Exchange Act or any other purpose, (i) acting (or has agreed or is agreeing to act together with any other person) as a partnership, limited partnership, syndicate or other group for the purpose of acquiring, holding or disposing of securities of the Issuer or otherwise with respect to the Issuer or any securities of the Issuer or (ii) a member of any group with respect to the Issuer or any securities of the Issuer.</footnote>
<footnote id="F3">Without conceding its status as a greater than 10% beneficial owner or that the reported transactions are subject to disclosure under Section 16(a) of the Exchange Act or short-swing profit recovery under Section 16(b) of the Exchange Act, the amount of profit potentially recoverable by the Issuer from the reported transactions in the event that the Reporting Persons were greater than 10% beneficial owners and the transactions were subject to Section 16(b) has been or will be remitted to the Issuer.</footnote>
</footnotes>
<ownerSignature>
<signatureName>BANK OF AMERICA CORP /DE/ By Its: Authorized Signatory /s/ Andres Ortiz</signatureName>
<signatureDate>2026-10-29</signatureDate>
</ownerSignature>
<ownerSignature>
<signatureName>MERRILL LYNCH, PIERCE, FENNER & SMITH INC. By Its: Authorized Signatory /s/ Andres Ortiz</signatureName>
<signatureDate>2026-10-29</signatureDate>
</ownerSignature>
</ownershipDocument>Congressional trading in BMN
These disclosures provide context. Their presence does not establish a link between a trader and the event.
DisclosedTradeAmount
- Nov 3, 2022$1K–$15K
Sen. Thomas R. Carper (D-DE)
Bought Blackrock 2037 Municipal Target Term Trust BMN
$1K–$15K · Traded Oct 27, 2022 · disclosed Nov 3, 2022 · Spouse
Original documents control. Public records can be amended, and company connections may require interpretation. Nothing here is investment advice.