Landstar System (LSTR) director sells 11,246 shares around $221 average

Rhea-AI Filing Summary

Landstar System director Diana M. Murphy reported an open-market sale of 11,246 shares of Common Stock on June 5, 2026. The weighted average sale price was $221.2809 per share, with prices ranging from $218.12 to $223.86. After this transaction, she directly holds 18,853 shares of Landstar System stock.

Insider Trade Summary

Net Seller: 11,246 shares

Net Sell 1 txn

Insider MURPHY DIANA M

Role Director

Sold 11,246 shs ($2.49M)

Type	Security	Shares	Price	Value
Sale	Common Stock	11,246	$221.2809	$2.49M

Holdings After Transaction: Common Stock — 18,853 shares (Direct)

Footnotes (1)

1. F1. The price reported is the weighted average sale price for the transactions reported. The prices received ranged from $218.12 to $223.86. The reporting person will provide to the issuer, a security holder of the issuer, or the SEC staff, upon request, full information regarding the number of shares sold at each price within the range.

Key Figures

Shares sold: 11,246 shares Weighted average price: $221.2809 per share Shares held after sale: 18,853 shares +2 more

5 metrics

Shares sold 11,246 shares Open-market sale on June 5, 2026

Weighted average price $221.2809 per share Average sale price for reported transactions

Shares held after sale 18,853 shares Direct ownership following June 5, 2026 transaction

Low sale price $218.12 per share Lowest price within reported sale range

High sale price $223.86 per share Highest price within reported sale range

Key Terms

Common Stock, open-market sale, weighted average sale price

3 terms

Common Stock financial

"security_title: "Common Stock""

Common stock represents ownership shares in a company, giving investors a stake in its success and a say in important decisions through voting rights. It is the most common type of stock traded on markets and can provide income through dividends, as well as potential for value growth. For investors, holding common stock means sharing in the company’s profits and risks.

open-market sale financial

"transaction_action: "open-market sale""

An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

weighted average sale price financial

"The price reported is the weighted average sale price for the transactions reported."

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

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Form 4 Insider Transactions: What Each Field Means →

Available on EDGAR 06/08/2026 - 04:54 PM Accepted by SEC EDGAR 06/08/2026 - 04:53 PM Learn about SEC filing dates

FAQ

What insider transaction did Landstar System (LSTR) disclose for Diana M. Murphy?

Diana M. Murphy reported an open-market sale of Landstar System Common Stock. She sold 11,246 shares on June 5, 2026 at a weighted average price of $221.2809 per share, according to the Form 4 filing.

At what prices did Diana M. Murphy sell Landstar System (LSTR) shares?

The reported weighted average sale price was $221.2809 per share. According to the footnote, individual sale prices during the transactions ranged from $218.12 to $223.86 per share, all as part of the June 5, 2026 trades.

How many Landstar System (LSTR) shares does Diana M. Murphy hold after the sale?

Following the reported transactions, Diana M. Murphy directly holds 18,853 shares of Landstar System Common Stock. This post-transaction holding is disclosed in the Form 4 as her total direct ownership after the June 5, 2026 sale.

Was Diana M. Murphy’s Landstar System (LSTR) trade an open-market sale?

Yes. The Form 4 describes the transaction as an open-market sale of Common Stock. It is coded as a sale with transaction code “S” and labeled an open-market or private sale at market-based prices during the trading day.

Does the Landstar System (LSTR) Form 4 mention how the sale price was calculated?

Yes. The filing states the reported price is a weighted average sale price for all trades reported that day. It notes that individual sale prices ranged between $218.12 and $223.86 per share.

Can investors see the exact trade breakdown for Diana M. Murphy’s LSTR sale?

The filing explains that only a weighted average price is shown. It adds that full details of the number of shares sold at each price in the $218.12–$223.86 range are available upon request from the issuer, a security holder, or SEC staff.

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

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^*

MURPHY DIANA M

(Last) (First) (Middle)

13410 SUTTON PARK DRIVE SOUTH

(Street)

JACKSONVILLE FLORIDA 32224

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
LANDSTAR SYSTEM INC [ LSTR ]

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

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/05/2026

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	06/05/2026		S		11,246	D	$221.2809(1)	18,853	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. The price reported is the weighted average sale price for the transactions reported. The prices received ranged from $218.12 to $223.86. The reporting person will provide to the issuer, a security holder of the issuer, or the SEC staff, upon request, full information regarding the number of shares sold at each price within the range.

	/s/ Lauren W. Mapanoo, attorney-in-fact	06/08/2026
	** 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)