Martin F. Jackson - 30 Jun 2026 Form 4 Insider Report for SELECT MEDICAL HOLDINGS CORP (SEM)

Reporting relationship: EXECUTIVE VICE PRESIDENT
Issuer ticker: SEM
Reported as of: 30 Jun 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 01 Jul 2026, 14:16:10 UTC
Prior SEC filing: 04 Aug 2025
Source filing: View source filing
Reporting owner signature: /s/ John F. Duggan, Attorney-in-Fact

Filing notes and source

Key filing fact

Martin F. Jackson filed Form 4 for SELECT MEDICAL HOLDINGS CORP (SEM) on 01 Jul 2026.

Key facts

This page summarizes Martin F. Jackson's Form 4 filing for SELECT MEDICAL HOLDINGS CORP (SEM).
3 reported transactions and 0 derivative rows are listed below.
Accepted by SEC: 01 Jul 2026, 14:16.

Change

Previous filing in this sequence was filed on 04 Aug 2025.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001168882 Primary reporting owner

JACKSON MARTIN F

Relationship: EXECUTIVE VICE PRESIDENT
Address: C/O SELECT MEDICAL HOLDINGS CORPORATION, 4714 GETTYSBURG ROAD, MECHANICSBURG
Signature: /s/ John F. Duggan, Attorney-in-Fact
Signature date: 01 Jul 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

SEM transaction

Common Stock

Other

Transaction value
Shares: -1,383,421
Change %: -100%
Price: $0.000000^*
Shares after: 0
Date: 30 Jun 2026
Ownership: Direct
Footnotes: F1, F2

SEM transaction

Common Stock

Other

Transaction value
Shares: -2,634
Change %: -100%
Price: $0.000000^*
Shares after: 0
Date: 30 Jun 2026
Ownership: By son
Footnotes: F1, F3, F4

SEM transaction

Common Stock

Other

Transaction value
Shares: -2,634
Change %: -100%
Price: $0.000000^*
Shares after: 0
Date: 30 Jun 2026
Ownership: By daughter
Footnotes: F1, F3, F4

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Section 16 status

Martin F. Jackson is no longer subject to Section 16 filing requirements. Form 4 or Form 5 obligations may still apply in specific circumstances.

Explanation of responses 4 footnotes

Footnote 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).

Footnote F2

Immediately prior to the effective time of the merger, the reporting person contributed 1,138,754 common shares and 244,667 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.

Footnote F3

Immediately prior to the effective time of the merger, the Reporting Person contributed 2,634 common shares to Parent in exchange for an equivalent amount of shares of Parent Common Shares, which Parent Common Shares were then exchanged for an equivalent amount of interests in Stallion Group Parent, LP.

Footnote F4

The reporting person beneficially owns the reported securities indirectly, but disclaims beneficial ownership of the reported securities except to the extent of his pecuniary interest therein.