Patrick J. Guinee - 13 Feb 2026 Form 4 Insider Report for FOSTER L B CO (FSTR)

Role: EVP General Counsel & Sec.
Signature: /s/ Patrick J. Guinee by Judith Balog, attorney-in-fact
Issuer symbol: FSTR
Transactions as of: 13 Feb 2026
Net transactions value: -$76,133
Form type: 4
Filing time: 18 Feb 2026, 15:08:55 UTC
Previous filing: 12 Feb 2026
Next filing: 09 Mar 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Guinee Patrick J.	EVP General Counsel & Sec.	L.B. FOSTER COMPANY, 415 HOLIDAY DRIVE, SUITE 100, PITTSBURGH	/s/ Patrick J. Guinee by Judith Balog, attorney-in-fact	18 Feb 2026	0001600919

This filing has been restated, see here for the amended filing

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	FSTR	Common Stock	Tax liability	$29,353	-928	-1.1%	$31.63	82,635	13 Feb 2026	Direct	F1, F2, F3
transaction	FSTR	Common Stock	Tax liability	$46,781	-1,479	-1.8%	$31.63	81,156	14 Feb 2026	Direct	F2, F3, F4

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Shares withheld to pay taxes applicable to the vesting of restricted stock related to the 2024-2026 LTIP awarded on 5/23/24.
F2	Includes 15,874 Performance Restricted Stock Units earned under the 2023-2025 Long Term Incentive Plan granted on 2/14/2023; those 15,874 Performance Restricted Stock Units will settle at the end of the performance period on December 31, 2025, upon certification by the Compensation Committee.
F3	Includes 2,194 Performance Restricted Stock Units earned under the 2024-2026 Long Term Incentive Plan granted on 5/23/2024; those 2,194 Performance Restricted Stock Units will settle at the end of the performance period on December 31, 2026, upon certification by the Compensation Committee.
F4	Shares withheld to pay taxes applicable to the vesting of restricted stock related to the 2023-2025 LTIP awarded on 2/14/23.