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  4. [Form 4] BLACKROCK MUNIASSETS FUND, INC. Insider Trading Activity

BlackRock MuniAssets Fund (NYSE: MUA) director sells 188 rights in share offering

Filing Impact
(Neutral)
Filing Sentiment
(Neutral)
Form Type
4

Rhea-AI Filing Summary

BLACKROCK MUNIASSETS FUND, INC. director Carl W. Kester reported a sale of 188 transferable subscription rights on August 7, 2026 at $0.0061 per right. These rights relate to a pro rata rights offering that allows holders to subscribe for up to 16,784,940 common shares at an estimated subscription price of $10.04 per share. Each right entitles the holder to purchase one new common share for every three rights held, with a minimum of one share for shareholders owning fewer than three shares on the July 28, 2026 record date. After this transaction, the reporting person held no rights of this type.

Positive

  • None.

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Insider KESTER W CARL
Role Director
Sold 188 shs ($1.15)
Type Security Shares Price Value
Sale Transferable Subscription Rights (Right to Buy) F1 188 $0.0061 $1.15
Holdings After Transaction: Transferable Subscription Rights (Right to Buy) — 0 shares (Direct)
Footnotes (1)
  1. F1. On July 17, 2026, BlackRock MuniAssets Fund, Inc. (the "Fund") announced the terms of a pro rata offering of transferable subscription rights (the "Rights") to holders of the Fund's common shares as of the record date of July 28, 2026 ("Record Date Shareholders"), entitling the holders of such Rights to subscribe for up to an aggregate of 16,784,940 of the Fund's common shares (the "Rights Offering"). Record Date Shareholders received one Right for each outstanding whole common share held on the record date. The Rights entitle their holders to purchase one new common share for every three Rights held; however, any Record Date Shareholder who owns fewer than three common shares as of the close of business on the Record Date will be entitled to subscribe for one common share. The estimated subscription price per common share is $10.04.
Rights sold 188 transferable subscription rights Derivative sale reported on August 7, 2026
Sale price per right $0.0061 Price for each transferable subscription right sold
Underlying common shares 62 shares Common stock underlying the 188 rights sold
Maximum shares in rights offering 16,784,940 common shares Aggregate shares available through the rights offering
Estimated subscription price $10.04 per share Estimated subscription price for new common shares
Rights held after transaction 0 rights Total subscription rights of this type following the sale
transferable subscription rights financial
"pro rata offering of transferable subscription rights (the "Rights") to holders"
Transferable subscription rights are short-term entitlements given to existing shareholders allowing them to buy additional shares in a company at a fixed price, and to sell those entitlements to others if they do not want to exercise them. They matter to investors because they protect ownership stakes from dilution and create a tradable asset—like a coupon that can be used to buy discounted stock or sold for cash—affecting share value and portfolio decisions.
Rights Offering financial
"up to an aggregate of 16,784,940 of the Fund's common shares (the "Rights Offering")"
A rights offering is a way for a company to raise additional money by giving existing shareholders the opportunity to buy more shares at a discounted price before they are offered to the public. It’s similar to a special sale where current owners get the first chance to buy extra items at a lower cost, allowing them to increase their investment if they choose. This process matters to investors because it can affect the value of their holdings and their ability to buy new shares at favorable terms.
Record Date Shareholders financial
"to holders of the Fund's common shares as of the record date of July 28, 2026 ("Record Date Shareholders")"
Shareholders who are recorded on a company’s books as owning shares on a specific date set by the company to determine who is entitled to dividends, votes, or other corporate actions. Think of it like a snapshot or guest list: only people listed at that moment receive the benefit, so buying or selling stock right before or after that date can change whether an investor gets the payout or voting rights.
pro rata offering financial
"announced the terms of a pro rata offering of transferable subscription rights"

FAQ

What insider transaction did BLACKROCK MUNIASSETS FUND (MUA) report?
BLACKROCK MUNIASSETS FUND (MUA) reported that director Carl W. Kester sold 188 transferable subscription rights on August 7, 2026 at $0.0061 per right, leaving him with no remaining rights of this type.

What are the transferable subscription rights mentioned in the MUA Form 4?
The transferable subscription rights give holders the ability to buy new common shares in a rights offering. Holders can purchase one new share for every three rights, at an estimated subscription price of $10.04 per share.

How many shares could be issued in BLACKROCK MUNIASSETS FUND (MUA)'s rights offering?
The rights offering for BLACKROCK MUNIASSETS FUND (MUA) permits subscriptions for up to 16,784,940 common shares. This aggregate share amount is tied to the pro rata distribution of one right per outstanding common share on the record date.

What did the 188 rights sold by the MUA director represent in underlying shares?
The 188 transferable subscription rights sold by the MUA director corresponded to 62 underlying common shares. Each three rights entitle the holder to subscribe for one new common share in the rights offering.

When is the record date and estimated subscription price for the MUA rights offering?
For BLACKROCK MUNIASSETS FUND (MUA), the record date for the rights offering is July 28, 2026, and the estimated subscription price per new common share is $10.04, as disclosed in connection with the offering terms.

Who received subscription rights in the BLACKROCK MUNIASSETS FUND (MUA) rights offering?
Subscription rights were issued to Record Date Shareholders of BLACKROCK MUNIASSETS FUND (MUA). Each shareholder holding whole common shares on July 28, 2026 received one right for each share owned on that date.

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Form 4 Insider Transactions: What Each Field Means →
SEC Form 4
FORM 4UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number:3235-0287
Estimated average burden
hours per response:0.5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.
1. Name and Address of Reporting Person*
KESTER W CARL
(Last)(First)(Middle)
50 HUDSON YARDS
(Street)
NEW YORK NEW YORK 10001
(City)(State)(Zip)
UNITED STATES
(Country)		2. Issuer Name and Ticker or Trading Symbol
BLACKROCK MUNIASSETS FUND, INC. [ MUA ] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
XDirector10% Owner
Officer (give title below)Other (specify below)
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
08/07/2026		6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form filed by More than One Reporting Person
4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year)2A. Deemed Execution Date, if any (Month/Day/Year)3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeVAmount(A) or (D)Price
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year)3A. Deemed Execution Date, if any (Month/Day/Year)4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year)7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Transferable Subscription Rights (Right to Buy)(1)(1)08/07/2026S18807/28/202608/20/2026Common Stock62$0.00610D
Explanation of Responses:
1. On July 17, 2026, BlackRock MuniAssets Fund, Inc. (the "Fund") announced the terms of a pro rata offering of transferable subscription rights (the "Rights") to holders of the Fund's common shares as of the record date of July 28, 2026 ("Record Date Shareholders"), entitling the holders of such Rights to subscribe for up to an aggregate of 16,784,940 of the Fund's common shares (the "Rights Offering"). Record Date Shareholders received one Right for each outstanding whole common share held on the record date. The Rights entitle their holders to purchase one new common share for every three Rights held; however, any Record Date Shareholder who owns fewer than three common shares as of the close of business on the Record Date will be entitled to subscribe for one common share. The estimated subscription price per common share is $10.04.
/s/ Gladys Chang as Attorney-in-Fact08/10/2026
** Signature of Reporting PersonDate
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

Source: View Original Filing on SEC EDGAR