FOSTER L B CO director logs tax share withholding

FOSTER L B CO director Diane B. Owen reported a small, routine share disposition tied to equity compensation.

Rhea-AI Filing Summary

FOSTER L B CO director Diane B. Owen reported a small, routine share disposition tied to equity compensation. On the vesting of stock from her 2025 Annual Director Equity Award, 96 shares of Common Stock were withheld at $38.11 per share to cover taxes. After this tax-withholding event, she continues to directly own 78,397 shares of Common Stock, indicating that only a minor portion of her holdings was affected and there was no open-market sale.

Insider Trade Summary

Exercise Price or Tax Liability: 96 shares

Exercise Price or Tax Liability 1 txn

Insider OWEN DIANE B

Role Director

Type	Security	Shares	Price	Value
Exercise Price or Tax Liability	Common Stock	96	$38.11	$4K

Holdings After Transaction: Common Stock — 78,397 shares (Direct)

Footnotes (1)

1. F1. Shares withheld to pay taxes applicable to the vesting of stock related to the 2025 Annual Director Equity Award.

Key Figures

Shares withheld for taxes: 96 shares Withholding price per share: $38.11/share Shares held after transaction: 78,397 shares

3 metrics

Shares withheld for taxes 96 shares Tax-withholding disposition related to 2025 Annual Director Equity Award

Withholding price per share $38.11/share Value assigned to withheld shares on May 22, 2026

Shares held after transaction 78,397 shares Direct ownership following tax-withholding disposition

Key Terms

tax-withholding disposition, Annual Director Equity Award, Common Stock

3 terms

tax-withholding disposition financial

"transaction_action: tax-withholding disposition"

A tax-withholding disposition is an event or transaction—such as selling or transferring securities, exercising options, or receiving compensation—that triggers a requirement to hold back part of the payment and remit it to tax authorities. It matters to investors because it reduces the cash they receive immediately and can change the timing and amount of taxable income, like a cashier taking a portion of your sale proceeds to pay taxes before you get the rest.

Annual Director Equity Award financial

"vesting of stock related to the 2025 Annual Director Equity Award"

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.

FAQ

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

What did FOSTER L B CO director Diane B. Owen report in this Form 4 for FSTR?

Director Diane B. Owen reported a tax-withholding disposition of 96 shares of Common Stock. The shares were withheld to pay taxes on the vesting of stock from her 2025 Annual Director Equity Award, not sold on the open market.

How many FSTR shares were withheld for taxes from Diane B. Owen’s award?

A total of 96 shares of FOSTER L B CO Common Stock were withheld. These shares covered taxes related to the vesting of stock from her 2025 Annual Director Equity Award, as described in the filing’s footnote disclosure.

At what price were the withheld FSTR shares valued in Diane B. Owen’s Form 4?

The 96 withheld shares were valued at $38.11 per share. This price is used in the Form 4 to reflect the value of the shares applied toward Owen’s tax liability on the vested director equity award.

How many FSTR shares does Diane B. Owen hold after this tax-withholding event?

Following the tax-withholding disposition, Diane B. Owen directly holds 78,397 shares of FOSTER L B CO Common Stock. This shows that only a small portion of her overall position was used to satisfy the equity award tax obligation.

Was Diane B. Owen’s Form 4 transaction an open-market sale of FSTR stock?

No, the transaction was a tax-withholding disposition, not an open-market sale. Shares were withheld by the issuer to pay taxes on the vesting of stock from her 2025 Annual Director Equity Award, according to the filing footnote.

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

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Accepted by SEC EDGAR 05/27/2026 - 03:11 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^*

OWEN DIANE B

(Last) (First) (Middle)

C/O L. B. FOSTER COMPANY

415 HOLIDAY DRIVE, SUITE 100

(Street)

PITTSBURGH PENNSYLVANIA 15220

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
FOSTER L B CO [ FSTR ]

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)
05/22/2026

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	05/22/2026		F		96(1)	D	$38.11	78,397	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. Shares withheld to pay taxes applicable to the vesting of stock related to the 2025 Annual Director Equity Award.

Remarks:

	Diane B. Owen by Maribel Castro attorney-in-fact	05/27/2026
	** 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)