BlackRock (NYSE: BLK) reports 9.9% beneficial stake in Select Medical (SEM)

Rhea-AI Filing Summary

BlackRock, Inc. reports its beneficial ownership of common stock of Select Medical Holdings Corp. (SEM) in an amended Schedule 13G filing. BlackRock and certain of its business units beneficially own 12,320,106 shares of SEM common stock, representing 9.9% of the outstanding class.

BlackRock has sole voting power over 12,150,652 shares and sole dispositive power over all 12,320,106 shares, with no shared voting or dispositive power. The filing notes that at least one underlying fund, iShares Core S&P Small-Cap ETF, holds an interest in SEM common stock representing more than five percent of SEM’s total outstanding common stock.

Key Figures

Beneficial ownership: 12,320,106 shares Percent of class: 9.9% Sole voting power: 12,150,652 shares +1 more

4 metrics

Beneficial ownership 12,320,106 shares Common stock of Select Medical Holdings Corp. beneficially owned by BlackRock, Inc.

Percent of class 9.9% Portion of SEM common stock class beneficially owned by BlackRock, Inc.

Sole voting power 12,150,652 shares Shares of SEM over which BlackRock, Inc. has sole power to vote

Sole dispositive power 12,320,106 shares Shares of SEM over which BlackRock, Inc. has sole power to dispose

Key Terms

Schedule 13G, beneficially owned, sole dispositive power, parent holding company

4 terms

Schedule 13G regulatory

"This reflects the securities beneficially owned, or deemed to be beneficially owned"

A Schedule 13G is a formal document that investors file with the government when they acquire a large ownership stake in a company, usually for investment purposes rather than control. It helps keep the public informed about who owns significant parts of a company's shares, which can influence how the company is managed and how investors make decisions. Filing this schedule is important for transparency and understanding the ownership landscape of publicly traded companies.

beneficially owned financial

"reflects the securities beneficially owned, or deemed to be beneficially owned, by certain business units"

Beneficially owned describes securities or assets where a person has the economic rights and control—such as the right to receive dividends and to direct voting—even if legal title is held in another name. Think of it like having the keys and using a car that’s registered to someone else: you get the benefits and make decisions. Investors care because beneficial ownership reveals who truly controls value and voting power, affecting corporate decisions and takeover dynamics.

sole dispositive power financial

"Sole Dispositive Power 12,320,106.00"

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.

parent holding company regulatory

"If a parent holding company has filed this schedule, pursuant to (ii)(G)"

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Available on EDGAR 07/30/2026 - 11:19 AM Accepted by SEC EDGAR 07/30/2026 - 11:18 AM Learn about SEC filing dates

FAQ

What ownership stake in Select Medical Holdings Corp. (SEM) does BlackRock report in this Schedule 13G/A?

BlackRock reports beneficial ownership of 12,320,106 shares of Select Medical Holdings Corp. common stock, representing 9.9% of the outstanding class. This reflects holdings attributed to specific BlackRock business units.

How much voting power over SEM shares does BlackRock report in this filing for SEM?

BlackRock reports sole voting power over 12,150,652 SEM shares and no shared voting power. It also reports sole dispositive power over 12,320,106 shares, indicating BlackRock alone can decide how these shares are voted and disposed.

What percentage of Select Medical Holdings Corp. (SEM) does BlackRock’s holding represent?

BlackRock’s beneficial ownership represents 9.9% of SEM’s common stock. This percentage is based on SEM’s total outstanding common stock and is disclosed directly in the ownership section of the Schedule 13G/A.

Which BlackRock-affiliated fund holds more than 5% of SEM’s outstanding common stock?

The filing notes that iShares Core S&P Small-Cap ETF has an interest in SEM common stock that is more than five percent of SEM’s total outstanding common stock. This reflects the ETF’s substantial position in the company’s shares.

Does BlackRock share voting or dispositive power over SEM shares with other parties?

BlackRock reports 0 shares with shared voting power and 0 shares with shared dispositive power in SEM. All reported powers—12,150,652 voting and 12,320,106 dispositive—are held on a sole basis by BlackRock entities.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 12)

SELECT MEDICAL HOLDINGS CORP

(Name of Issuer)

Common Stock

(Title of Class of Securities)

81619Q105

(CUSIP Number)

06/30/2026

(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): 81619Q105

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 12,150,652.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 12,320,106.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

12,320,106.00

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)

9.9 %

12

Type of Reporting Person (See Instructions)

HC

SCHEDULE 13G

Item 1.
(a)	Name of issuer: SELECT MEDICAL HOLDINGS CORP
(b)	Address of issuer's principal executive offices: 4714 Gettysburg Road, P.O. Box 2034 MECHANICSBURG PA 17055
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.: 81619Q105
Item 4.	Ownership
(a)	Amount beneficially owned: 12320106
(b)	Percent of class: 9.9 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 12150652
	(ii) Shared power to vote or to direct the vote: 0
	(iii) Sole power to dispose or to direct the disposition of: 12320106
	(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 Core S&P Small-Cap ETF, in the common stock of SELECT MEDICAL HOLDINGS CORP 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:	07/30/2026

Exhibit Information

Exhibit 24: Power of Attorney Exhibit 99: Item 7