Director John E. Kunz of FOSTER L B CO (FSTR) reports 36-share tax withholding

Rhea-AI Filing Summary

Foster L B Co director John E. Kunz reported a small, routine share disposition related to taxes. On May 22, 2026, 36 shares of common stock were withheld at $38.11 per share to cover tax liabilities from the vesting of restricted stock granted under the 2025 Annual Director Equity Award. After this tax-withholding event, Kunz directly owned 21,773 shares of common stock.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Kunz John E

Role null

Type	Security	Shares	Price	Value
Tax Withholding	Common Stock	36	$38.11	$1K

Holdings After Transaction: Common Stock — 21,773 shares (Direct, null)

Footnotes (1)

1. [object Object]

Key Figures

Shares withheld for taxes: 36 shares Tax withholding price: $38.11 per share Shares owned after transaction: 21,773 shares

3 metrics

Shares withheld for taxes 36 shares Tax-withholding disposition on May 22, 2026

Tax withholding price $38.11 per share Value used for 36-share tax withholding

Shares owned after transaction 21,773 shares Direct common stock holdings after May 22, 2026 event

Key Terms

tax-withholding disposition, restricted stock, 2025 Annual Director Equity Award

3 terms

tax-withholding disposition financial

"transaction_action: "tax-withholding disposition" for 36 shares at $38.11"

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.

restricted stock financial

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

Shares granted to an individual that carry limits on transfer or sale until certain conditions are met, such as staying with the company for a set time or hitting performance targets. Think of them as a locked gift that gradually opens; for investors they matter because they affect how many shares may enter the market later, signal management incentives and potential dilution, and reveal confidence in future company performance.

2025 Annual Director Equity Award financial

"restricted stock related to the 2025 Annual Director Equity Award"

Form 4 Insider Transactions: What Each Field Means →

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^*

Kunz John E

(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		36(1)	D	$38.11	21,773	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 restricted stock related to the 2025 Annual Director Equity Award.

Remarks:

	John E. Kunz 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)

FAQ

What insider transaction did FOSTER L B CO (FSTR) director John E. Kunz report?

Director John E. Kunz reported a small tax-related share disposition. On May 22, 2026, 36 shares of FOSTER L B CO common stock were withheld to cover taxes on vested restricted stock from the 2025 Annual Director Equity Award.

Was the FSTR insider transaction an open-market sale or a tax withholding event?

The FSTR insider transaction was a tax withholding event, not an open-market sale. Shares were delivered to satisfy tax liabilities arising from the vesting of restricted stock under the 2025 Annual Director Equity Award, as indicated by the Form 4 code F.

How many FSTR shares were affected in John E. Kunz’s May 2026 Form 4 filing?

The Form 4 filing shows 36 shares of FSTR common stock were disposed of. These shares were withheld to pay taxes related to restricted stock vesting. Following this event, Kunz directly held a total of 21,773 shares of FOSTER L B CO common stock.

What is John E. Kunz’s FOSTER L B CO share ownership after the tax withholding?

After the reported tax withholding, John E. Kunz directly owned 21,773 shares of FOSTER L B CO common stock. This figure reflects his position immediately following the 36-share tax-withholding disposition tied to the vesting of his 2025 Annual Director Equity Award.

What does the FSTR Form 4 footnote say about the 36 withheld shares?

The footnote explains the 36 shares were withheld to pay taxes due on restricted stock vesting. It specifies the shares relate to the 2025 Annual Director Equity Award, clarifying the disposition was for tax obligations rather than a discretionary open-market sale of FSTR shares.