FSTR Form 4: 22NW Fund, Aron English disclose stock sales

Rhea-AI Filing Summary

22NW Fund, LP and related reporting persons reported small open-market sales of Foster L B Co (FSTR) stock. On 11/14/2025, they sold 2,247 shares of common stock at $27 per share, and on 11/17/2025 they sold an additional 400 shares at $27 per share. After these transactions, they report beneficial ownership of 1,297,944 shares held indirectly through 22NW Fund, LP. The reporting persons state they may be part of a Section 13(d) group that collectively owns more than 10% of the company’s outstanding common stock and each disclaims beneficial ownership beyond their economic interest.

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)
11/14/2025

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)	11/14/2025		S		2,247	D	$27	1,298,344	I	By: 22NW Fund, LP(2)
Common Stock(1)	11/17/2025		S		400	D	$27	1,297,944	I	By: 22NW Fund, LP(2)
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. 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.

	/s/ Aron R. English	11/18/2025
	22NW Fund, LP; By: 22NW Fund GP, LLC; By: /s/ Aron R. English, Manager	11/18/2025
	22NW, LP; By: 22NW GP, Inc.; By: /s/ Aron R. English, President and Sole Shareholder	11/18/2025
	22NW Fund GP, LLC; By: /s/ Aron R. English, Manager	11/18/2025
	22NW GP, Inc., By: /s/ Aron R. English, President and Sole Shareholder	11/18/2025
	** 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.

FAQ

What insider transactions were reported for FOSTER L B CO (FSTR)?

The reporting persons disclosed sales of 2,247 FSTR common shares on 11/14/2025 at $27 per share and 400 shares on 11/17/2025 at $27 per share.

How many FSTR shares do the reporting persons beneficially own after the transactions?

Following the reported sales, the filing shows beneficial ownership of 1,297,944 shares of FSTR common stock held indirectly through 22NW Fund, LP.

Who are the reporting persons in this FSTR Form 4 filing?

The filing is made jointly by 22NW Fund, LP, 22NW, LP, 22NW Fund GP, LLC, 22NW GP, Inc. and Aron English, collectively referred to as the reporting persons.

What is the relationship of the reporting persons to FOSTER L B CO (FSTR)?

The reporting persons indicate a relationship as a director and as beneficial owners who may be part of a Section 13(d) group that collectively owns more than 10% of FSTR’s outstanding common stock.

How are the FSTR shares held by the reporting persons structured?

The shares are owned directly by 22NW Fund, LP. As investment manager, general partners, and controlling person, the other reporting entities and Aron English may be deemed to beneficially own these securities.

Do the reporting persons claim full beneficial ownership of the FSTR shares?

No. Each reporting person disclaims beneficial ownership of the reported securities except to the extent of his or its pecuniary interest.