Trinity Industries director granted 4,024 stock units

Biesterfeld Robert C Jr reported acquisition or exercise transactions in this Form 4 filing.

Rhea-AI Filing Summary

Biesterfeld Robert C Jr reported acquisition or exercise transactions in this Form 4 filing.

Trinity Industries director Robert C. Biesterfeld Jr. received a grant of 4,024 Trinity Stock Units as equity compensation. These units represent a right to receive an equal number of Trinity common shares on a 1-for-1 basis after his service as director ends.

The units vest at the first annual stockholders meeting following the grant date, aligning his compensation with shareholder interests over that period. After vesting and upon his termination as director, the units will be settled in Trinity common stock. Following this grant, he holds 4,024 stock units directly.

Insider Trade Summary

Grant/Award: 4,024 shares

Grant/Award 1 txn

Insider Biesterfeld Robert C Jr

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Trinity Stock Units	4,024	$0.00	$0.00

Holdings After Transaction: Trinity Stock Units — 4,024 contracts (Direct)

Footnotes (1)

1. F1. Restricted Stock Units granted pursuant to the Fifth Amended and Restated Trinity Industries, Inc. 2004 Stock Option and Incentive Plan. Distribution is 1 for 1 in Trinity Stock after Director's termination. Units vest upon the first annual stockholders meeting following the Date of Grant.

Key Figures

Stock units granted: 4,024 units Underlying common shares: 4,024 shares Grant price per unit: $0.0000 +1 more

4 metrics

Stock units granted 4,024 units Trinity Stock Units granted to director on May 21, 2026

Underlying common shares 4,024 shares Each unit convertible 1-for-1 into common stock

Grant price per unit $0.0000 Equity award granted at no cash cost to director

Post-grant stock units held 4,024 units Total Trinity Stock Units following this transaction

Key Terms

Restricted Stock Units, Trinity Stock Units, Stock Option and Incentive Plan, annual stockholders meeting

4 terms

Restricted Stock Units financial

"Restricted Stock Units granted pursuant to the Fifth Amended and Restated Trinity Industries, Inc. 2004 Stock Option and Incentive Plan."

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

Trinity Stock Units financial

"Distribution is 1 for 1 in Trinity Stock after Director's termination."

Stock Option and Incentive Plan financial

"granted pursuant to the Fifth Amended and Restated Trinity Industries, Inc. 2004 Stock Option and Incentive Plan."

annual stockholders meeting financial

"Units vest upon the first annual stockholders meeting following the Date of Grant."

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What did Trinity Industries (TRN) disclose in this Form 4 filing?

Trinity Industries disclosed that director Robert C. Biesterfeld Jr. received 4,024 Trinity Stock Units as an equity award. These units are a form of restricted stock unit that convert into common shares on a 1-for-1 basis after his board service ends.

How many stock units were granted to the Trinity Industries (TRN) director?

The director received 4,024 Trinity Stock Units in this grant. Each unit represents a future right to receive one share of Trinity common stock, providing equity-based compensation tied to the company’s long-term performance and his continued board service.

When do the Trinity Industries (TRN) stock units vest for the director?

The stock units vest upon the first annual stockholders meeting following the grant date. This schedule links the equity award to at least one full annual shareholder cycle, encouraging continued service and alignment with shareholder interests during that period.

When will the Trinity Industries (TRN) director receive common stock for these units?

The director will receive Trinity common stock after his termination from the board. At that time, each vested Trinity Stock Unit converts into one share, turning the deferred equity award into actual stock ownership upon the end of board service.

What plan governs the Trinity Stock Units granted to the Trinity (TRN) director?

The units were granted under the Fifth Amended and Restated Trinity Industries, Inc. 2004 Stock Option and Incentive Plan. This plan authorizes equity-based awards like restricted stock units to directors and others to support long-term incentive compensation.

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Accepted by SEC EDGAR 05/26/2026 - 04:57 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

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^*

Biesterfeld Robert C Jr

(Last) (First) (Middle)

14221 N DALLAS PARKWAY

SUITE 1100

(Street)

DALLAS TEXAS 75254

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
TRINITY INDUSTRIES INC [ NYSE/TRN ]

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)
05/21/2026

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

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
Trinity Stock Units	$0	05/21/2026		A		4,024		(1)	(1)	Common Stock	4,024	$0	4,024	D

Explanation of Responses:

1. Restricted Stock Units granted pursuant to the Fifth Amended and Restated Trinity Industries, Inc. 2004 Stock Option and Incentive Plan. Distribution is 1 for 1 in Trinity Stock after Director's termination. Units vest upon the first annual stockholders meeting following the Date of Grant.

Remarks:

	Phillip M. Kim For: Robert C. Biesterfeld Jr.	05/26/2026
	** 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)