Foster L B grants 295 RSUs to controller

Curran Timothy Joseph reported acquisition or exercise transactions in this Form 4 filing.

Rhea-AI Filing Summary

Curran Timothy Joseph reported acquisition or exercise transactions in this Form 4 filing.

FOSTER L B CO reported a Form 4 showing its Controller and Principal Accounting Officer, Timothy Joseph Curran, received an award of 295 restricted stock units of common stock at no cost. These RSUs will generally vest in equal parts over three years on the first, second, and third anniversaries of the grant date.

After this grant, Curran holds 9,090 shares and units in total, including 255 Performance Restricted Stock Units under the 2025–2027 Long Term Incentive Plan and 966 Performance Restricted Stock Units under the 2024–2026 Long Term Incentive Plan, which are scheduled to settle following performance certification in 2027 and 2026, respectively.

Insider Trade Summary

Grant/Award: 295 shares

Grant/Award 1 txn

Insider Curran Timothy Joseph

Role Controller and PAO

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	295	$0.00	$0.00

Holdings After Transaction: Common Stock — 9,090 shares (Direct)

Footnotes (3)

1. F1. Award of 295 restricted stock units (RSUs) which are settled in stock upon vesting and generally will vest ratably over a three-year period on the first, second, and third anniversary of the date of the grant.
2. F2. Includes 255 Performance Restricted Stock Units earned under the 2025-2027 Long Term Incentive Plan granted on 5/22/2025; those 255 Performance Restricted Stock Units will settle at the end of the performance period on December 31, 2027, upon certification by the Compensation Committee.
3. F3. Includes 966 Performance Restricted Stock Units earned under the 2024-2026 Long Term Incentive Plan granted on 5/23/2024; those 966 Performance Restricted Stock Units will settle at the end of the performance period on December 31, 2026, upon certification of the Compensation Committee.

Key Figures

RSU grant: 295 restricted stock units Post-transaction holdings: 9,090 shares and units Performance RSUs 2025–2027 plan: 255 units +3 more

6 metrics

RSU grant 295 restricted stock units Award of common stock-settled RSUs on grant date

Post-transaction holdings 9,090 shares and units Total holdings following the RSU award

Performance RSUs 2025–2027 plan 255 units To settle after performance period ending December 31, 2027

Performance RSUs 2024–2026 plan 966 units To settle after performance period ending December 31, 2026

Vesting schedule 3-year ratable vesting RSUs vest on first, second, and third anniversaries of grant

Grant price $0.00 per share Equity compensation award with no cash cost to insider

Key Terms

restricted stock units, Performance Restricted Stock Units, Long Term Incentive Plan, Compensation Committee

4 terms

restricted stock units financial

"Award of 295 restricted stock units (RSUs) which are settled in stock upon vesting"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

Performance Restricted Stock Units financial

"Includes 255 Performance Restricted Stock Units earned under the 2025-2027 Long Term Incentive Plan"

Performance restricted stock units (PRSUs) are promises to deliver company shares to employees or executives only if the business meets specific performance targets and any time-based holding rules. Think of them as a bonus that converts into stock only after set goals are reached, so investors watch PRSUs for two reasons: they can dilute existing shares if paid out, and they signal how closely management’s pay is tied to company performance.

Long Term Incentive Plan financial

"earned under the 2025-2027 Long Term Incentive Plan granted on 5/22/2025"

A long term incentive plan is a company program that awards executives and key employees bonuses—often in stock, options, or cash—only if the business meets multi-year performance goals. It links management pay to company results—like tying a coach’s bonus to a team’s multi-season record—so investors monitor it for how leaders are motivated, potential share dilution, and signals about the company’s long-term priorities.

Compensation Committee financial

"will settle at the end of the performance period ... upon certification by the Compensation Committee"

A compensation committee is a group within a company's leadership responsible for setting and reviewing how much top executives and employees are paid, including salaries, bonuses, and benefits. It matters to investors because fair and effective pay decisions can influence a company's performance, leadership motivation, and overall governance, helping ensure that the company’s management is aligned with shareholders’ interests.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What did FSTR reporting person Timothy Curran receive in this Form 4 filing?

Timothy Curran received an award of 295 restricted stock units of common stock. These units were granted at no cost and represent equity-based compensation that will be settled in shares as they vest over time.

How do the 295 RSUs granted to Timothy Curran at FSTR vest?

The 295 restricted stock units generally vest ratably over three years. Vesting occurs in equal portions on the first, second, and third anniversaries of the grant date, after which each vested unit is settled in one share of common stock.

How many FSTR shares and units does Timothy Curran hold after this transaction?

After the award, Timothy Curran holds a total of 9,090 shares and units. This figure includes time-based restricted stock units and performance-based RSUs that will settle in future years once vesting and performance conditions are met.

What performance-based RSUs are included in Timothy Curran’s FSTR holdings?

Curran’s holdings include 255 Performance Restricted Stock Units from the 2025–2027 Long Term Incentive Plan and 966 from the 2024–2026 plan. These performance RSUs will settle at the end of each plan’s performance period upon Compensation Committee certification.

When will Timothy Curran’s performance-based RSUs at FSTR settle?

The 255 Performance Restricted Stock Units related to the 2025–2027 plan are scheduled to settle on December 31, 2027. The 966 units from the 2024–2026 plan are scheduled to settle on December 31, 2026, after performance is certified.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 06/03/2026 - 03:26 PM Learn about SEC filing dates

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^*

Curran Timothy Joseph

(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)

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/01/2026

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	06/01/2026		A		295(1)	A	$0	9,090(2)(3)	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. Award of 295 restricted stock units (RSUs) which are settled in stock upon vesting and generally will vest ratably over a three-year period on the first, second, and third anniversary of the date of the grant.

2. Includes 255 Performance Restricted Stock Units earned under the 2025-2027 Long Term Incentive Plan granted on 5/22/2025; those 255 Performance Restricted Stock Units will settle at the end of the performance period on December 31, 2027, upon certification by the Compensation Committee.

3. Includes 966 Performance Restricted Stock Units earned under the 2024-2026 Long Term Incentive Plan granted on 5/23/2024; those 966 Performance Restricted Stock Units will settle at the end of the performance period on December 31, 2026, upon certification of the Compensation Committee.

Remarks:

	/s/ Timothy J. Curran by Maribel Castro, attorney-in-fact	06/03/2026
	** 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)