UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 13D

(Rule 13d-101)

INFORMATION TO BE INCLUDED IN STATEMENTS FILED PURSUANT

TO § 240.13d-1(a) AND AMENDMENTS THERETO FILED PURSUANT TO

§ 240.13d-2(a)

(Amendment No. 23)¹

ATRM Holdings, Inc.

(Name of Issuer)

Common Stock, par value $0.001 per share

(Title of Class of Securities)

04964A103

(CUSIP Number)

JEFFREY E. EBERWEIN

LONE STAR VALUE MANAGEMENT, LLC

53 Forest Avenue, 1^st Floor

Old Greenwich, Connecticut 06870

(203) 489-9500

(Name, Address and Telephone Number of Person

Authorized to Receive Notices and Communications)

December 17, 2018

(Date of Event Which Requires Filing of This Statement)

If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of §§ 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box ☒.

Note:  Schedules filed in paper format shall include a signed original and five copies of the schedule, including all exhibits.  See § 240.13d-7 for other parties to whom copies are to be sent.

1              The remainder of this cover page shall be filled out for a reporting person’s initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter disclosures provided in a prior cover page.

The information required on the remainder of this cover page shall not be deemed to be “filed” for the purpose of Section 18 of the Securities Exchange Act of 1934 (“Act”) or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).

CUSIP NO. 04964A103

	1	NAME OF REPORTING PERSON
			Lone Star Value Investors, LP
	2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP				(a) ☐
						(b) ☒
	3	SEC USE ONLY
	4	SOURCE OF FUNDS
	5	CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e)				☐
	6	CITIZENSHIP OR PLACE OF ORGANIZATION
			Delaware
NUMBER OF			7	SOLE VOTING POWER
SHARES
BENEFICIALLY					- 0 -
OWNED BY			8	SHARED VOTING POWER
EACH
REPORTING					- 0 -
PERSON WITH			9	SOLE DISPOSITIVE POWER
					- 0 -
			10	SHARED DISPOSITIVE POWER
					- 0 -
	11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
			- 0 -
	12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES				☐
	13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
			0%
	14	TYPE OF REPORTING PERSON
			PN

2

CUSIP NO. 04964A103

	1	NAME OF REPORTING PERSON
			LONE STAR VALUE CO-INVEST I, LP
	2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP				(a) ☐
						(b) ☒
	3	SEC USE ONLY
	4	SOURCE OF FUNDS
	5	CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e)				☐
	6	CITIZENSHIP OR PLACE OF ORGANIZATION
			DELAWARE
NUMBER OF			7	SOLE VOTING POWER
SHARES
BENEFICIALLY					- 0 -
OWNED BY			8	SHARED VOTING POWER
EACH
REPORTING					- 0 -
PERSON WITH			9	SOLE DISPOSITIVE POWER
					- 0 -
			10	SHARED DISPOSITIVE POWER
					- 0 -
	11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
			- 0 -
	12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES				☐
	13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
			0%
	14	TYPE OF REPORTING PERSON
			PN

3

CUSIP NO. 04964A103

	1	NAME OF REPORTING PERSON
			Lone Star Value Investors GP, LLC
	2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP				(a) ☐
						(b) ☒
	3	SEC USE ONLY
	4	SOURCE OF FUNDS
			OO
	5	CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e)				☐
	6	CITIZENSHIP OR PLACE OF ORGANIZATION
			Delaware
NUMBER OF			7	SOLE VOTING POWER
SHARES
BENEFICIALLY					3,005
OWNED BY			8	SHARED VOTING POWER
EACH
REPORTING					- 0 -
PERSON WITH			9	SOLE DISPOSITIVE POWER
					3,005
			10	SHARED DISPOSITIVE POWER
					- 0 -
	11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
			3,005
	12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES				☐
	13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
			Less than 1%
	14	TYPE OF REPORTING PERSON
			OO

4

CUSIP NO. 04964A103

	1	NAME OF REPORTING PERSON
			Lone Star Value Management, LLC
	2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP				(a) ☐
						(b) ☒
	3	SEC USE ONLY
	4	SOURCE OF FUNDS
	5	CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e)				☐
	6	CITIZENSHIP OR PLACE OF ORGANIZATION
			Connecticut
NUMBER OF			7	SOLE VOTING POWER
SHARES
BENEFICIALLY					- 0 -
OWNED BY			8	SHARED VOTING POWER
EACH
REPORTING					- 0 -
PERSON WITH			9	SOLE DISPOSITIVE POWER
					- 0 -
			10	SHARED DISPOSITIVE POWER
					- 0 -
	11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
			- 0 -
	12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES				☐
	13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
			0%
	14	TYPE OF REPORTING PERSON
			OO

5

CUSIP NO. 04964A103

	1	NAME OF REPORTING PERSON
			Jeffrey E. Eberwein
	2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP				(a) ☐
						(b) ☒
	3	SEC USE ONLY
	4	SOURCE OF FUNDS
			AF, OO
	5	CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEM 2(d) OR 2(e)				☐
	6	CITIZENSHIP OR PLACE OF ORGANIZATION
			United States
NUMBER OF			7	SOLE VOTING POWER
SHARES
BENEFICIALLY					418,017
OWNED BY			8	SHARED VOTING POWER
EACH
REPORTING					- 0 -
PERSON WITH			9	SOLE DISPOSITIVE POWER
					418,017
			10	SHARED DISPOSITIVE POWER
					- 0 -
	11	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
			418,017*
	12	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES				☐
	13	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
			17.4%
	14	TYPE OF REPORTING PERSON
			IN

* Includes 10,000 Shares granted under the Issuer’s 2014 Incentive Plan.

6

CUSIP NO. 04964A103

The following constitutes Amendment No. 23 to the Schedule 13D filed by the undersigned (“Amendment No. 23”). This Amendment No. 23 amends the Schedule 13D as specifically set forth herein.

Item 6. Contracts, Arrangements, Understandings or Relationships With Respect to Securities of the Issuer.

Item 6 is hereby amended to add the following:

On December 17, 2018, Lone Star Value Management entered into a Securities Purchase Agreement (the “December 2018 Securities Purchase Agreement”) with the Issuer pursuant to which Lone Star Value Management purchased, for $300,000, an unsecured promissory note made by the Issuer in the principal amount of $300,000 (the “LSVM December 2018 Note”), bearing interest at 10.0% per annum at an annual rate of 12% (versus the 10% interest rate applied to cash payments) in the manner specified in the LSVM 2018 Note), with interest payable annually and any unpaid principal and interest due on the LSVM December 2018 Note. The foregoing description of the terms of the December 2018 Securities Purchase Agreement and LSVM December 2018 Note is not complete and is qualified in its entirety by reference to the text of the December 2018 Securities Purchase Agreement and LSVM December 2018 Note, which are attached as Exhibits 99.1 and 99.2 hereto, respectively, and are incorporated herein by reference.

Lone Star Value Management, LLC has entered into a Subordination Agreement (the “LSVM Subordination Agreement”) with the Issuer and Gerber Finance Inc. (“Gerber”) pursuant to which LSVM agrees to subordinate all of the Issuer’s obligations to Lone Star Value Management in respect of the December 2018 Securities Purchase Agreement and LSVM December 2018 Note to the obligations of certain subsidiaries of the Issuer to Gerber under their Loan and Security Agreements with Gerber.

Item 7. Material to be Filed as Exhibits.

Item 7 is hereby amended to add the following exhibits:

99.1 December 2018 Securities Purchase Agreement, dated December 17, 2018.

99.2 December 2018 Note, dated December 17, 2018.

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CUSIP NO. 04964A103

SIGNATURES

After reasonable inquiry and to the best of his knowledge and belief, the undersigned certifies that the information set forth in this statement is true, complete and correct.

Dated: December 17, 2018

Lone Star Value Investors, LP
By:	Lone Star Value Investors GP, LLC General Partner

By:	/s/ Jeffrey E. Eberwein
	Name:	Jeffrey E. Eberwein
	Title:	Manager

Lone Star Value Co-Invest I, LP
By:	Lone Star Value Investors GP, LLC General Partner
By:	/s/ Jeffrey E. Eberwein
	Name:	Jeffrey E. Eberwein
	Title:	Manager

Lone Star Value Investors GP, LLC
By:	/s/ Jeffrey E. Eberwein
	Name:	Jeffrey E. Eberwein
	Title:	Manager

Lone Star Value Management, LLC
By:	/s/ Jeffrey E. Eberwein
	Name:	Jeffrey E. Eberwein
	Title:	Sole Member

/s/ Jeffrey E. Eberwein

Jeffrey E. Eberwein

8