BlackRock (BLK) discloses 1,047,247 shares (16.1%) in iShares BuyWrite ETF

Rhea-AI Filing Summary

BlackRock reports beneficial ownership of 1,047,247 shares (16.1%) of iShares S&P 500 BuyWrite ETF. The filing states BlackRock, Inc. has sole voting and sole dispositive power over 1,047,247 shares. The cover notes that iShares S&P 500 Premium Income ETF holds an interest exceeding 5% of the class. The amendment is signed by a BlackRock managing director on 06/04/2026.

Key Figures

Beneficial ownership: 1,047,247 shares Percent of class: 16.1% Sole voting power: 1,047,247 shares +4 more

7 metrics

Beneficial ownership 1,047,247 shares Amount beneficially owned reported in Item 4

Percent of class 16.1% Percent of class reported in Item 4

Sole voting power 1,047,247 shares Item 4(i) sole power to vote

Sole dispositive power 1,047,247 shares Item 4(iii) sole power to dispose

CUSIP 46438G711 Issuer CUSIP listed on cover

Signature date 06/04/2026 Date on signature block

Other >5% holder iShares S&P 500 Premium Income ETF Item 6 notes an interest >5% by this entity

Key Terms

Schedule 13G/A, Beneficial ownership, Sole dispositive power, CUSIP

4 terms

Schedule 13G/A regulatory

"The filing is an amendment: "SCHEDULE 13G/A""

A Schedule 13G/A is an amended public filing with the U.S. securities regulator that updates a previous Schedule 13G, disclosing when an individual or group holds a substantial (typically over 5%) stake in a company and is claiming a passive, non‑controlling intent. Investors monitor these updates because rising or falling holdings can signal changing confidence, potential future moves, or shifts in voting power — like watching a public ledger where large shareholders quietly adjust their positions.

Beneficial ownership financial

"Item 4: "Amount beneficially owned: 1047247""

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.

Sole dispositive power regulatory

"Item 4(iii): "Sole power to dispose or to direct the disposition of: 1047247""

Sole dispositive power is the exclusive legal authority to decide what happens to a security — for example, whether to sell, transfer, or retain shares — without needing anyone else’s permission. Investors care because it signals who truly controls the economic outcome of an investment: like holding the only key to a safe, the holder can realize gains or losses and may trigger regulatory reporting, insider rules, or influence over corporate ownership.

CUSIP technical

"Cover: "CUSIP No.: 46438G711""

A CUSIP is a nine-character alphanumeric code that uniquely identifies a U.S. or Canadian financial security—such as a stock, bond, or fund share—like a Social Security number for an investment. It matters to investors because brokers, exchanges and record-keepers use the CUSIP to match trades, track ownership, settle transactions and pull accurate records, reducing errors and ensuring money and securities go to the right place.

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

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Available on EDGAR 06/04/2026 - 06:09 PM Accepted by SEC EDGAR 06/04/2026 - 12:12 PM Learn about SEC filing dates

FAQ

What stake did BlackRock report in iShares S&P 500 BuyWrite ETF (BLK filing)?

BlackRock reported beneficial ownership of 1,047,247 shares, equal to 16.1% of the class. The filing specifies sole voting and sole dispositive power over those shares and is recorded in an amended Schedule 13G/A signed on 06/04/2026.

Who at BlackRock signed the Schedule 13G/A amendment for this filing?

Spencer Fleming, Managing Director, signed the amendment. The signature block shows the filing was signed and dated 06/04/2026, completing the Schedule 13G/A disclosure for BlackRock's reporting business units.

Does the filing identify any other holder with more than 5% in iShares S&P 500 BuyWrite ETF?

Yes. The filing states that iShares S&P 500 Premium Income ETF has an interest exceeding 5% of the outstanding common stock. The Schedule 13G/A notes this in Item 6 as required for holdings over five percent.

What voting and dispositive powers does BlackRock assert over the reported shares?

BlackRock asserts sole voting power of 1,047,247 shares and sole dispositive power of 1,047,247 shares. The filing records zero shared voting or dispositive power for these shares.

What CUSIP and issuer are listed on BlackRock's Schedule 13G/A amendment?

The filing lists issuer as iShares S&P 500 BuyWrite ETF with CUSIP 46438G711. The issuer's principal executive office address is shown as 400 Howard Street, San Francisco, CA 94105.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 1)

iShares S&P 500 BuyWrite ETF

(Name of Issuer)

Common Stock

(Title of Class of Securities)

46438G711

(CUSIP Number)

05/31/2026

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

Rule 13d-1(b)

Rule 13d-1(c)

Rule 13d-1(d)

schemaVersion:

SCHEDULE 13G

CUSIP Number(s): 46438G711

1

Names of Reporting Persons

BlackRock, Inc.

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 1,047,247.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 1,047,247.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

1,047,247.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

16.1 %

12

Type of Reporting Person (See Instructions)

HC

SCHEDULE 13G

Item 1.
(a)	Name of issuer: iShares S&P 500 BuyWrite ETF
(b)	Address of issuer's principal executive offices: 400 HOWARD STREET SAN FRANCISCO CA 94105
Item 2.
(a)	Name of person filing: BlackRock, Inc. In accordance with SEC Release No. 34-39538 (January 12, 1998), this Schedule 13G reflects the securities beneficially owned, or deemed to be beneficially owned, by certain business units (collectively, the "Reporting Business Units") of BlackRock, Inc. and its subsidiaries and affiliates. It does not include securities, if any, beneficially owned by other business units whose beneficial ownership of securities are disaggregated from that of the Reporting Business Units in accordance with such release.
(b)	Address or principal business office or, if none, residence: BlackRock, Inc., 50 Hudson Yards New York, NY 10001
(c)	Citizenship: See Item 4 of Cover Page
(d)	Title of class of securities: Common Stock
(e)	CUSIP No.: 46438G711
Item 4.	Ownership
(a)	Amount beneficially owned: 1047247
(b)	Percent of class: 16.1 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 1047247
	(ii) Shared power to vote or to direct the vote: 0
	(iii) Sole power to dispose or to direct the disposition of: 1047247
	(iv) Shared power to dispose or to direct the disposition of: 0
Item 5.	Ownership of 5 Percent or Less of a Class.
	Not Applicable
Item 6.	Ownership of more than 5 Percent on Behalf of Another Person.
	If any other person is known to have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, such securities, a statement to that effect should be included in response to this item and, if such interest relates to more than 5 percent of the class, such person should be identified. A listing of the shareholders of an investment company registered under the Investment Company Act of 1940 or the beneficiaries of employee benefit plan, pension fund or endowment fund is not required. The interest of 1 such person, iShares S&P 500 Premium Income ETF, in the common stock of iShares S&P 500 BuyWrite ETF is more than five percent of the total outstanding common stock.
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
	If a parent holding company has filed this schedule, pursuant to Rule 13d-1(b)(ii)(G), so indicate under Item 3(g) and attach an exhibit stating the identity and the Item 3 classification of the relevant subsidiary. If a parent holding company has filed this schedule pursuant to Rule 13d-1(c) or Rule 13d-1(d), attach an exhibit stating the identification of the relevant subsidiary. See Exhibit 99
Item 8.	Identification and Classification of Members of the Group.
	Not Applicable
Item 9.	Notice of Dissolution of Group.
	Not Applicable

Item 10.

Certifications:

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under § 240.14a-11.

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

BlackRock, Inc.

Signature:	Spencer Fleming
Name/Title:	Managing Director
Date:	06/04/2026

Exhibit Information

Exhibit 24: Power of Attorney Exhibit 99: Item 7