[Form 4] FOSTER L B CO Insider Trading Activity

Rhea-AI Filing Summary

L.B. Foster Company (FSTR): 22NW Fund, LP and related reporting persons disclosed open‑market sales of common stock. Reported trades were 4,813 shares at a weighted average price of $28.1749 on 11/11/2025, 2,749 shares at $27.5187 on 11/11/2025, 3,368 shares at $27.0643 on 11/12/2025, and 1,600 shares at $27.0019 on 11/13/2025. Following these transactions, the group reported 1,300,591 shares beneficially owned, held indirectly through 22NW Fund, LP.

Insider Trade Summary

Net Seller: 12,530 shares ($345,610)

Net Sell 5 txns

Insider English Aron R., 22NW, LP, 22NW Fund, LP, 22NW Fund GP, LLC, 22NW GP, Inc.

Role 10% Owner | 10% Owner | 10% Owner | 10% Owner | 10% Owner

Sold 12,530 shs ($346K)

Type	Security	Shares	Price	Value
Sale	Common Stock	1,600	$27.0019	$43K
Sale	Common Stock	3,368	$27.0643	$91K
Sale	Common Stock	4,813	$28.1749	$136K
Sale	Common Stock	2,749	$27.5187	$76K
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 1,300,591 shares (Indirect, By: 22NW Fund, LP); Common Stock — 905 shares (Direct)

Footnotes (1)

1. 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. Represents a weighted average price. These shares were sold in multiple transactions at prices ranging from $28.1600 to $28.1750, inclusive. The Reporting Persons undertake to provide the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. 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. Represents a weighted average price. These shares were sold in multiple transactions at prices ranging from $27.1000 to $28.0200, inclusive. The Reporting Persons undertake to provide the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. Represents a weighted average price. These shares were sold in multiple transactions at prices ranging from $27.0000 to $27.2400, inclusive. The Reporting Persons undertake to provide the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. Represents a weighted average price. These shares were sold in multiple transactions at prices ranging from $27.0000 to $27.0300, inclusive. The Reporting Persons undertake to provide the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

See more from StockTitan in Google Search and AI answers. Adds StockTitan as a preferred source · opens Google

Add on Google Not now

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^*

English Aron R.

(Last) (First) (Middle)

590 1ST AVE. S

UNIT C1

(Street)

SEATTLE WA 98104

(City) (State) (Zip)

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

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director	X	10% Owner
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
11/11/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

	Form filed by One Reporting Person
X	Form filed by More than One Reporting Person

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(1)	11/11/2025		S		4,813	D	$28.1749(2)	1,308,308	I	By: 22NW Fund, LP(3)
Common Stock(1)	11/11/2025		S		2,749	D	$27.5187(4)	1,305,559	I	By: 22NW Fund, LP(3)
Common Stock(1)	11/12/2025		S		3,368	D	$27.0643(5)	1,302,191	I	By: 22NW Fund, LP(3)
Common Stock(1)	11/13/2025		S		1,600	D	$27.0019(6)	1,300,591	I	By: 22NW Fund, LP(3)
Common Stock(1)								905	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

1. Name and Address of Reporting Person^*

English Aron R.

(Last) (First) (Middle)

590 1ST AVE. S

UNIT C1

(Street)

SEATTLE WA 98104

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer

	Director	X	10% Owner
	Officer (give title below)		Other (specify below)

1. Name and Address of Reporting Person^*

22NW, LP

(Last) (First) (Middle)

590 1ST AVE. S

UNIT C1

(Street)

SEATTLE WA 98104

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer

	Director	X	10% Owner
	Officer (give title below)		Other (specify below)

1. Name and Address of Reporting Person^*

22NW Fund, LP

(Last) (First) (Middle)

590 1ST AVE. S

UNIT C1

(Street)

SEATTLE WA 98104

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer

	Director	X	10% Owner
	Officer (give title below)		Other (specify below)

1. Name and Address of Reporting Person^*

22NW Fund GP, LLC

(Last) (First) (Middle)

590 1ST AVE. S

UNIT C1

(Street)

SEATTLE WA 98104

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer

	Director	X	10% Owner
	Officer (give title below)		Other (specify below)

1. Name and Address of Reporting Person^*

22NW GP, Inc.

(Last) (First) (Middle)

590 1ST AVE. S

UNIT C1

(Street)

SEATTLE WA 98104

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer

	Director	X	10% Owner
	Officer (give title below)		Other (specify below)

Explanation of Responses:

1. 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.

2. Represents a weighted average price. These shares were sold in multiple transactions at prices ranging from $28.1600 to $28.1750, inclusive. The Reporting Persons undertake to provide the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

3. 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.

4. Represents a weighted average price. These shares were sold in multiple transactions at prices ranging from $27.1000 to $28.0200, inclusive. The Reporting Persons undertake to provide the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

5. Represents a weighted average price. These shares were sold in multiple transactions at prices ranging from $27.0000 to $27.2400, inclusive. The Reporting Persons undertake to provide the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

6. Represents a weighted average price. These shares were sold in multiple transactions at prices ranging from $27.0000 to $27.0300, inclusive. The Reporting Persons undertake to provide the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

	/s/ Aron R. English	11/13/2025
	22NW Fund, LP; By: 22NW Fund GP, LLC; By: /s/ Aron R. English, Manager	11/13/2025
	22NW, LP; By: 22NW GP, Inc.; By: /s/ Aron R. English, President and Sole Shareholder	11/13/2025
	22NW Fund GP, LLC; By: /s/ Aron R. English, Manager	11/13/2025
	22NW GP, Inc., By: /s/ Aron R. English, President and Sole Shareholder	11/13/2025
	** 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.