Aron R. English - 14 Nov 2025 Form 4 Insider Report for FOSTER L B CO (FSTR)

Role: 10%+ Owner
Signature: /s/ Aron R. English
Issuer symbol: FSTR
Transactions as of: 14 Nov 2025
Net transactions value: -$71,469
Form type: 4
Filing time: 18 Nov 2025, 16:43:22 UTC
Previous filing: 13 Nov 2025
Next filing: 25 Nov 2025
SEC: View on sec.gov

Reporting Owners (5)

Name	Relationship	Address	Signature	Signature date	CIK
English Aron R.	10%+ Owner	590 1ST AVE. S, UNIT C1, SEATTLE	/s/ Aron R. English	18 Nov 2025	0001770436
22NW, LP	10%+ Owner	590 1ST AVE. S, UNIT C1, SEATTLE	22NW Fund, LP; By: 22NW Fund GP, LLC; By: /s/ Aron R. English, Manager	18 Nov 2025	0001694297
22NW Fund, LP	10%+ Owner	590 1ST AVE. S, UNIT C1, SEATTLE	22NW, LP; By: 22NW GP, Inc.; By: /s/ Aron R. English, President and Sole Shareholder	18 Nov 2025	0001640809
22NW Fund GP, LLC	10%+ Owner	590 1ST AVE. S, UNIT C1, SEATTLE	22NW Fund GP, LLC; By: /s/ Aron R. English, Manager	18 Nov 2025	0001770575
22NW GP, Inc.	10%+ Owner	590 1ST AVE. S, UNIT C1, SEATTLE	22NW GP, Inc., By: /s/ Aron R. English, President and Sole Shareholder	18 Nov 2025	0001783663

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	FSTR	Common Stock	Sale	$60,669	-2,247	-0.17%	$27.00	1,298,344	14 Nov 2025	By: 22NW Fund, LP	F1, F2
transaction	FSTR	Common Stock	Sale	$10,800	-400	-0.03%	$27.00	1,297,944	17 Nov 2025	By: 22NW Fund, LP	F1, F2
holding	FSTR	Common Stock						905	14 Nov 2025	Direct	F1

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

Explanation of Responses:

Id	Content
F1	This Form 4 is filed jointly by 22NW Fund, LP ("22NW Fund"), 22NW, LP ("22NW"), 22NW Fund GP, LLC ("22NW GP"), 22NW GP, Inc. ("22NW Inc.") and Aron English (collectively, the "Reporting Persons"). Each of the Reporting Persons may be deemed to be a member of a Section 13(d) group that collectively beneficially owns more than 10% of the Issuer's outstanding shares of Common Stock. Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein except to the extent of his or its pecuniary interest therein.
F2	Securities owned directly by 22NW Fund. As the investment manager to 22NW Fund, 22NW may be deemed to beneficially own the securities owned directly by 22NW Fund. As the general partner of 22NW Fund, 22NW GP may be deemed to beneficially own the securities owned directly by 22NW Fund. As the general partner of 22NW, 22NW Inc. may be deemed to beneficially own the securities owned directly by 22NW Fund. Mr. English, as the Portfolio Manager of 22NW, Manager of 22NW GP and President and sole shareholder of 22NW Inc., may be deemed to beneficially own the securities owned directly by 22NW Fund.

Content

This Form 4 is filed jointly by 22NW Fund, LP ("22NW Fund"), 22NW, LP ("22NW"), 22NW Fund GP, LLC ("22NW GP"), 22NW GP, Inc. ("22NW Inc.") and Aron English (collectively, the "Reporting Persons"). Each of the Reporting Persons may be deemed to be a member of a Section 13(d) group that collectively beneficially owns more than 10% of the Issuer's outstanding shares of Common Stock. Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein except to the extent of his or its pecuniary interest therein.

Securities owned directly by 22NW Fund. As the investment manager to 22NW Fund, 22NW may be deemed to beneficially own the securities owned directly by 22NW Fund. As the general partner of 22NW Fund, 22NW GP may be deemed to beneficially own the securities owned directly by 22NW Fund. As the general partner of 22NW, 22NW Inc. may be deemed to beneficially own the securities owned directly by 22NW Fund. Mr. English, as the Portfolio Manager of 22NW, Manager of 22NW GP and President and sole shareholder of 22NW Inc., may be deemed to beneficially own the securities owned directly by 22NW Fund.