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MARTIN F JACKSON

CIK 1168882 · EXECUTIVE VICE PRESIDENT · last filed 2026-07-01

MARTIN F JACKSON is an EXECUTIVE VICE PRESIDENT who has filed 37 SEC Form 4 insider transactions across 1 company since 2009. The most recent filing, for SEM, was dated Jul 1, 2026. Across all open-market trades the lifetime net is −$21.0M, making them a net seller over the disclosed history. 6 SEC filings were submitted jointly with SELECT MEDICAL CORP.

"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.

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Disclosed Exposure

$0

Companies

1

Total Filings

37

Lifetime Open-Market Net

-$20.96M

Filer Profile

Reported Address
4716 OLD GETTYSBURG ROAD
PO BOX 2034
MECHANICSBURG, PA 17055
Related Filers
SELECT MEDICAL CORP — 6 joint filings, latest 2005-02-28
Profile details as reported on the filer's SEC submissions — for individual insiders the address is often in care of the issuer. Related filers are identified from jointly filed SEC submissions and shared reported addresses. View filings on SEC EDGAR.

Holdings By Company

Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
Symbol Role Shares Price Disclosed Exposure Lifetime OM Net Filings Latest Filed
SELECT MEDICAL HOLDINGS CORP (SEM) Delisted EXECUTIVE VICE PRESIDENT 0 $16.51 $0 -$20.96M 37 2026-07-01

Recent Filings

37 filings
Insider activity across all companies, newest first. Form 4 rows are post-trade confirmations (buys, sells, grants, exercises). Notice (144) rows are pre-trade notices of intent to sell restricted or control stock under Rule 144 — they may not all execute. Compare adjacent dates to see which notices became actual sales.
Filed Symbol Action Net Shares Net $ Link
2026-07-01 SELECT MEDICAL HOLDINGS CORP (SEM) Delisted Other (J) −1,388,689 $0 EDGAR
2025-08-04 SELECT MEDICAL HOLDINGS CORP (SEM) Delisted Tax (F) −29,460 -$370.3K EDGAR
2025-07-31 SELECT MEDICAL HOLDINGS CORP (SEM) Delisted Grant (A) +150,000 $0 EDGAR
2024-11-07 SELECT MEDICAL HOLDINGS CORP (SEM) Delisted Tax (F) −42,422 -$1.58M EDGAR
2024-08-05 SELECT MEDICAL HOLDINGS CORP (SEM) Delisted Tax (F) −53,028 -$1.81M EDGAR
2024-08-02 SELECT MEDICAL HOLDINGS CORP (SEM) Delisted Tax (F) −18,648 -$730.6K EDGAR
2024-05-01 SELECT MEDICAL HOLDINGS CORP (SEM) Delisted Grant (A) +138,000 $0 EDGAR
2023-08-02 SELECT MEDICAL HOLDINGS CORP (SEM) Delisted Mixed +127,905 -$661.1K EDGAR
2023-07-31 SELECT MEDICAL HOLDINGS CORP (SEM) Delisted Tax (F) −61,814 -$1.86M EDGAR
2022-08-03 SELECT MEDICAL HOLDINGS CORP (SEM) Delisted Grant (A) +150,000 $0 EDGAR
Showing 1–10 of 37
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Form 4 codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.