BlackRock accounting chief transfers 1,192 shares

His reported post-transaction holdings include common stock and restricted stock units that vest over one to four years.

Rhea-AI Filing Summary

BlackRock, Inc. Principal Accounting Officer Marc D. Comerchero reported disposing of 1,192 shares on October 19, 2026, through a transfer in an exempt transaction pursuant to Rule 16a-12. His reported post-transaction holdings were 5,824 shares, including common stock and restricted stock units (RSUs) that vest over 1 to 4 years. No Rule 10b5-1 plan is reported.

Insider Trade Summary

Other: 1,192 shares

Other 1 txn

Insider Comerchero Marc D.

Role Principal Accounting Officer

Type	Security	Shares	Price	Value
Other	Common Stock F1, F2	1,192	$0.00	$0.00

Holdings After Transaction: Common Stock — 5,824 shares (Direct)

Footnotes (2)

1. F1. Reflects the transfer of 1,192 shares of the Company's common stock in an exempt transaction pursuant to Rule 16a-12.
2. F2. Includes Common Stock as well as Restricted Stock Units that vest over a period of 1 to 4 years. Each Restricted Stock Unit is payable solely by delivery of an equal number of shares of Common Stock.

Key Figures

Shares transferred: 1,192 shares Post-transaction holdings: 5,824 shares RSU vesting period: 1 to 4 years

3 metrics

Shares transferred 1,192 shares October 19, 2026

Post-transaction holdings 5,824 shares Includes common stock and RSUs

RSU vesting period 1 to 4 years RSUs vest over this period

Key Terms

Rule 16a-12, Restricted Stock Units, exempt transaction

3 terms

Rule 16a-12 regulatory

"exempt transaction pursuant to Rule 16a-12"

Restricted Stock Units financial

"Includes Common Stock as well as Restricted Stock Units"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

exempt transaction regulatory

"in an exempt transaction pursuant to Rule 16a-12"

A transaction in which securities are sold without the issuer having to register them with the securities regulator because the sale meets legal exemptions (for example private placements, certain small offerings, or sales to accredited investors). It matters to investors because exempt transactions often involve less public disclosure and more limits on resale, like buying something from a private marketplace rather than a public store—so information access and liquidity can differ from registered offerings.

FAQ

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

How many shares did BlackRock's Principal Accounting Officer transfer?

Marc D. Comerchero, BlackRock's Principal Accounting Officer, reported disposing of 1,192 shares on October 19, 2026, through a transfer in an exempt transaction pursuant to Rule 16a-12. His reported post-transaction holdings were 5,824 shares, including common stock and RSUs. No Rule 10b5-1 plan is reported.

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

Form 4 Insider Transactions: What Each Field Means →

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Available on EDGAR 10/19/2026 - 06:25 PM EDT Accepted by SEC EDGAR 10/19/2026 - 06:24 PM EDT Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED 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^*

Comerchero Marc D.

(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, Inc. [ BLK ]

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

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
10/19/2026

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

X	Form 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)
			Code	V	Amount	(A) or (D)	Price
Common Stock	10/19/2026		J		1,192(1)	D	$0	5,824(2)	D

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)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Reflects the transfer of 1,192 shares of the Company's common stock in an exempt transaction pursuant to Rule 16a-12.

2. Includes Common Stock as well as Restricted Stock Units that vest over a period of 1 to 4 years. Each Restricted Stock Unit is payable solely by delivery of an equal number of shares of Common Stock.

	/s/ R. Andrew Dickson as Attorney-in-Fact for Marc Comerchero	10/19/2026
	** 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 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)