BlackRock Muni CA Fund director reports no holdings

A BlackRock MuniHoldings California Quality Fund director filed an initial Form 3 reporting no transactions or derivative holdings.

Available on EDGAR 09/17/2026 - 06:03 PM EDT Accepted by SEC EDGAR 09/17/2026 - 06:03 PM EDT Learn about SEC filing dates

Rhea-AI Filing Summary

BLACKROCK MUNIHOLDINGS CALIFORNIA QUALITY FUND, INC. (MUC) has a new insider disclosure: Francis C. Mahoney filed an initial statement of beneficial ownership on Form 3 in his capacity as a director.

The filing reports no transactions or derivative positions, and includes no indication of activity under a Rule 10b5-1 trading plan.

Key Figures

Buy transactions: 0 transactions Sell transactions: 0 transactions Net shares bought or sold: 0 shares +2 more

5 metrics

Buy transactions 0 transactions Count of buy transactions reported in the Form 3 transaction summary

Sell transactions 0 transactions Count of sell transactions reported in the Form 3 transaction summary

Net shares bought or sold 0 shares Net buy/sell share count in the transaction summary

Derivative transactions 0 transactions Derivative transaction count in the Form 3 data

Holding entries 0 entries Number of reported holdings rows in the Form 3

Key Terms

Form 3, beneficial ownership, Rule 10b5-1 trading plan

3 terms

Form 3 regulatory

"Francis C. Mahoney filed an initial statement of beneficial ownership on Form 3"

Form 3 is the initial public filing that officers, directors and large shareholders must submit to report their ownership of a company’s securities when they become insiders. It acts like an opening inventory sheet that gives investors a starting point to see who holds significant stakes and to spot later trades or potential conflicts of interest, helping assess insider confidence and transparency.

beneficial ownership financial

"filed an initial statement of beneficial ownership on Form 3 in his capacity"

Beneficial ownership means the person or entity that actually enjoys the benefits of owning shares or other assets — such as receiving dividends, voting rights, or price gains — even if the legal title is held in another name. For investors it matters because knowing who truly controls and profits from a company reveals who can influence decisions, exposes potential conflicts of interest or hidden concentration of power, and affects transparency and risk in the stock.

Rule 10b5-1 trading plan regulatory

"includes no indication of activity under a Rule 10b5-1 trading plan"

A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What did the recent Form 3 filing for MUC disclose?

The Form 3 discloses that Francis C. Mahoney, a director of BLACKROCK MUNIHOLDINGS CALIFORNIA QUALITY FUND, INC. (MUC), filed an initial statement of beneficial ownership with no reported transactions or derivative positions.

Who is the reporting person in the MUC Form 3 filing?

The reporting person is Francis C. Mahoney, who is identified in the filing as a director of BLACKROCK MUNIHOLDINGS CALIFORNIA QUALITY FUND, INC.

Does the MUC Form 3 show any recent stock purchases or sales?

No. The transaction summary in the Form 3 shows 0 buy transactions, 0 sell transactions, and 0 net shares bought or sold, indicating no reported trading activity.

Are there any derivative securities reported in the MUC Form 3?

No. The Form 3 lists a derivative transaction count of 0 and an empty derivative summary, indicating no reported options or other derivative positions.

Was the MUC Form 3 filed under a Rule 10b5-1 trading plan?

No. The Rule 10b5-1 status field is null, and there is no indication in the data that the filing relates to transactions under a Rule 10b5-1 trading plan.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

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:			3235-0104
Estimated average burden
hours per response:			0.5

1. Name and Address of Reporting Person^*

Mahoney Francis C.

(Last) (First) (Middle)

50 HUDSON YARDS

(Street)

NEW YORK NEW YORK 10001

(City) (State) (Zip)

UNITED STATES

(Country)

2. Date of Event Requiring Statement (Month/Day/Year)
09/08/2026

3. Issuer Name and Ticker or Trading Symbol
BLACKROCK MUNIHOLDINGS CALIFORNIA QUALITY FUND, INC. [ MUC ]

3a. Foreign Trading Symbol

5. If Amendment, Date of Original Filed (Month/Day/Year)

4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

No securities are beneficially owned.

	/s/ Gladys Chang as Attorney-in-Fact	09/17/2026
	** Signature of Reporting Person	Date
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 5 (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 3: SEC 1473 (03-26)