Limbach director buys 500 shares at $50.575

Limbach Holdings director Laurel J. Krzeminski added shares via SEP IRA while reclassifying existing holdings without changing total beneficial ownership.

Rhea-AI Filing Summary

Limbach Holdings, Inc. (LMB) director Laurel J. Krzeminski reported purchasing 500 shares of common stock on September 15, 2026 at $50.575 per share, through an indirect holding in a SEP IRA. After this purchase, reported holdings include 4,000 shares in the SEP IRA, 1,500 shares held directly, and 31,452 shares held indirectly through the Laurel J. Krzeminski Revocable Trust. A footnote states that recent changes reflect a reclassification of how these holdings are presented and do not change aggregate beneficial ownership, and no Rule 10b5-1 trading plan is reported.

Insider Trade Summary

Net Buyer: 500 shares

Net Buy 3 txns

Insider Krzeminski Laurel J

Role Director

Bought 500 shs ($25K)

Type	Security	Shares	Price	Value
Purchase	Common Stock F1	500	$50.575	$25K
holding	Common Stock F1	--	--	--
holding	Common Stock F1	--	--	--

Holdings After Transaction: Common Stock — 4,000 shares (Indirect, By SEP-IRA); Common Stock — 1,500 shares (Direct); Common Stock — 31,452 shares (Indirect, By Laurel J. Krzeminski Revocable Trust)

Footnotes (1)

1. F1. The ownership amounts reported herein reflect the separate presentation of shares held through the Reporting Person's SEP IRA, shares held jointly with the Reporting Person's spouse and shares held by the Laurel J. Krzeminski Revocable Trust, of which the Reporting Person is the settlor and a co-trustee. Prior reports presented these holdings in the aggregate as directly owned. This reclassification does not reflect an acquisition or disposition of securities or change in the Reporting Person's aggregate beneficial ownership. The 500-share purchase reported herein is included in the SEP IRA balance.

Key Figures

Shares purchased: 500 shares Purchase price per share: $50.575 per share SEP IRA holdings after transaction: 4,000 shares +2 more

5 metrics

Shares purchased 500 shares Common stock purchased on September 15, 2026

Purchase price per share $50.575 per share Price for 500-share purchase on September 15, 2026

SEP IRA holdings after transaction 4,000 shares Indirect ownership via SEP IRA after purchase

Direct holdings after transaction 1,500 shares Common stock held directly by Krzeminski

Revocable Trust holdings after transaction 31,452 shares Indirect ownership via Laurel J. Krzeminski Revocable Trust

Key Terms

SEP IRA, Revocable Trust, beneficial ownership

3 terms

SEP IRA financial

"shares held through the Reporting Person's SEP IRA"

Revocable Trust financial

"held by the Laurel J. Krzeminski Revocable Trust"

A revocable trust is a legal arrangement where the person who creates it keeps control and can change or cancel the trust at any time, while naming who will manage and receive the assets later. Think of it like a flexible folder for your investments and property that can be relabeled or reworked as circumstances change; it matters to investors because it determines how ownership is recorded, how easily assets transfer on incapacity or death, and whether holdings bypass public probate proceedings.

beneficial ownership financial

"does not reflect an acquisition or disposition of securities or change in the Reporting Person's aggregate beneficial ownership"

Beneficial ownership means the person or entity that actually enjoys the benefits of owning shares or other assets — such as receiving dividends, voting rights, or price gains — even if the legal title is held in another name. For investors it matters because knowing who truly controls and profits from a company reveals who can influence decisions, exposes potential conflicts of interest or hidden concentration of power, and affects transparency and risk in the stock.

FAQ

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

What insider transaction did LMB director Laurel J. Krzeminski report?

Laurel J. Krzeminski reported a purchase of 500 shares of Limbach Holdings common stock on September 15, 2026 at $50.575 per share, made indirectly through a SEP IRA.

How many Limbach Holdings (LMB) shares does Krzeminski hold after this Form 4?

After the reported purchase, Krzeminski’s reported holdings are 4,000 shares indirectly via a SEP IRA, 1,500 shares held directly, and 31,452 shares held indirectly through the Laurel J. Krzeminski Revocable Trust.

Was the LMB insider trade made under a Rule 10b5-1 trading plan?

No. The filing indicates no Rule 10b5-1 trading plan applies to the reported transactions.

What does the reclassification in Krzeminski’s LMB holdings mean for ownership?

A footnote explains that the holdings were reclassified among a SEP IRA, jointly held shares, and a revocable trust. It states this does not change Krzeminski’s aggregate beneficial ownership of Limbach Holdings shares.

How are Krzeminski’s indirect LMB holdings structured?

Indirect holdings include 4,000 shares through a SEP IRA and 31,452 shares through the Laurel J. Krzeminski Revocable Trust, where Krzeminski is the settlor and a co-trustee.

What is the significance of the 500-share purchase in the SEP IRA for LMB?

The filing notes that the 500-share purchase is included in the SEP IRA balance of 4,000 shares, representing an additional indirect investment in Limbach Holdings common stock by Krzeminski.

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

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Available on EDGAR 09/16/2026 - 04:05 PM Accepted by SEC EDGAR 09/16/2026 - 04:04 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^*

Krzeminski Laurel J

(Last) (First) (Middle)

5102 W LAUREL STREET, SUITE 700

(Street)

TAMPA FLORIDA 33607

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
Limbach Holdings, Inc. [ LMB ]

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

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
09/15/2026

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	09/15/2026		P		500	A	$50.575	4,000(1)	I	By SEP-IRA
Common Stock								1,500(1)	D
Common Stock								31,452(1)	I	By Laurel J. Krzeminski Revocable Trust

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. The ownership amounts reported herein reflect the separate presentation of shares held through the Reporting Person's SEP IRA, shares held jointly with the Reporting Person's spouse and shares held by the Laurel J. Krzeminski Revocable Trust, of which the Reporting Person is the settlor and a co-trustee. Prior reports presented these holdings in the aggregate as directly owned. This reclassification does not reflect an acquisition or disposition of securities or change in the Reporting Person's aggregate beneficial ownership. The 500-share purchase reported herein is included in the SEP IRA balance.

Remarks:

	/s/ Jeremiah G. Garvey, Attorney-in-Fact for Laurel J. Krzeminski	09/16/2026
	** 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)