SEM executive restructures 361,370 shares in merger

SELECT MEDICAL HOLDINGS CORP executive vice president Brian R. Rusignuolo reported a restructuring transaction involving 361,370 shares of common stock.

Rhea-AI Filing Summary

SELECT MEDICAL HOLDINGS CORP executive vice president Brian R. Rusignuolo reported a restructuring transaction involving 361,370 shares of common stock. The Form 4 shows this was an “other” type of transaction tied to a previously signed merger agreement with Stallion Intermediate Corporation and Stallion MergerSub Corporation.

Immediately before the merger’s effective time, he contributed 203,037 common shares and 158,333 restricted shares to the merger parent in exchange for equivalent parent common and restricted shares, which were then exchanged for interests in Stallion Group Parent, LP. After these steps, the filing reports he directly holds 0 shares of SELECT MEDICAL common stock.

Insider Trade Summary

Other: 361,370 shares

Other 1 txn

Insider Rusignuolo Brian R.

Role EXECUTIVE VICE PRESIDENT

Type	Security	Shares	Price	Value
Other	Common Stock	361,370	$0.00	$0.00

Holdings After Transaction: Common Stock — 0 shares (Direct)

Footnotes (2)

1. F1. This Form 4 reports securities disposed of under the Agreement and Plan of Merger (the "Merger Agreement"), entered into on March 2, 2026, by and among the Issuer, Stallion Intermediate Corporation ("Parent"), and Stallion MergerSub Corporation (filed as Exhibit 2.1 to the Form 8-K filed with the Securities and Exchange Commission on March 3, 2026).
2. F2. Immediately prior to the effective time of the merger, the Reporting Person contributed 203,037 common shares and 158,333 restricted shares to Parent in exchange for an equivalent amount of shares of common stock ("Parent Common Shares") and restricted shares, respectively, of Parent, which Parent Common Shares were then exchanged for an equivalent amount of interests in Stallion Group Parent, LP.

Key Figures

Restructured shares: 361,370 shares Common shares contributed: 203,037 shares Restricted shares contributed: 158,333 shares +2 more

5 metrics

Restructured shares 361,370 shares Common stock involved in Form 4 transaction

Common shares contributed 203,037 shares Common shares contributed to merger parent

Restricted shares contributed 158,333 shares Restricted shares contributed to merger parent

Shares held after transaction 0 shares Direct SEM common stock holdings after restructuring

Merger agreement date March 2, 2026 Date of Agreement and Plan of Merger

Key Terms

Agreement and Plan of Merger, restricted shares, Parent Common Shares, Stallion Group Parent, LP, +1 more

5 terms

Agreement and Plan of Merger regulatory

"reports securities disposed of under the Agreement and Plan of Merger (the "Merger Agreement"), entered into on March 2, 2026"

An Agreement and Plan of Merger is a formal document where two companies agree to combine into one, outlining how the process will happen. It’s like a step-by-step plan for merging, and it matters because it shows both sides have agreed on the details before the official transition takes place.

restricted shares financial

"contributed 203,037 common shares and 158,333 restricted shares to Parent in exchange"

Restricted shares are company stock that cannot be sold or transferred immediately because they are subject to legal or contractual limits, such as a required holding period or performance conditions. They matter to investors because these locked-up shares can affect a company’s available stock for trading, future dilution, and insider incentives—imagine a gift that can’t be cashed until certain conditions are met, which changes when and how much supply can suddenly enter the market.

Parent Common Shares financial

"in exchange for an equivalent amount of shares of common stock ("Parent Common Shares") and restricted shares"

Stallion Group Parent, LP financial

"Parent Common Shares were then exchanged for an equivalent amount of interests in Stallion Group Parent, LP."

Form 4 regulatory

"This Form 4 reports securities disposed of under the Agreement and Plan of Merger"

Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.

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

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Accepted by SEC EDGAR 07/01/2026 - 02:18 PM 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

X

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^*

Rusignuolo Brian R.

(Last) (First) (Middle)

C/O SELECT MEDICAL CORPORATION

4714 GETTYSBURG ROAD

(Street)

MECHANICSBURG PENNSYLVANIA 17055

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
SELECT MEDICAL HOLDINGS CORP [ SEM ]

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

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/30/2026

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	06/30/2026		J(1)		361,370(2)	D	$0	0	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. This Form 4 reports securities disposed of under the Agreement and Plan of Merger (the "Merger Agreement"), entered into on March 2, 2026, by and among the Issuer, Stallion Intermediate Corporation ("Parent"), and Stallion MergerSub Corporation (filed as Exhibit 2.1 to the Form 8-K filed with the Securities and Exchange Commission on March 3, 2026).

2. Immediately prior to the effective time of the merger, the Reporting Person contributed 203,037 common shares and 158,333 restricted shares to Parent in exchange for an equivalent amount of shares of common stock ("Parent Common Shares") and restricted shares, respectively, of Parent, which Parent Common Shares were then exchanged for an equivalent amount of interests in Stallion Group Parent, LP.

	/s/ John F. Duggan, Attorney-in-Fact	07/01/2026
	** 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)