13D Filing: Lone Star Value Management and ATRM Holdings Inc. (ATRM)

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. 19)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 22, 2017

(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).

* Includes 20,000 Shares owned directly by Mr. Eberwein granted under the Issuer’s 2014 Incentive Plan.

The following constitutes Amendment No.
19 to the Schedule 13D filed by the undersigned (“Amendment No. 19”). This Amendment No. 19 amends the Schedule 13D
as specifically set forth herein.

Items 5(a) – (c) are hereby amended
and restated to read as follows:

The aggregate percentage of Shares reported
owned by each person named herein is based upon 2,396,219 Shares outstanding as of November 7, 2017, which is the total number
of Shares outstanding as reported in the Issuer’s definitive proxy statement filed with the Securities and Exchange Commission
on November 13, 2017.

Percentage: Approximately 44.6%

Percentage: 0%

Percentage: Approximately 44.6%

Percentage: Approximately 45.0%

Percentage: Approximately 45.8%

The Reporting Persons, as members of a
“group” for the purposes of Section 13(d)(3) of the Securities Exchange Act of 1934, as amended, may be deemed the
beneficial owner of the Shares directly owned by the other Reporting Persons.  Each Reporting Person disclaims beneficial
ownership of such Shares except to the extent of his or its pecuniary interest therein.

Item 6 is hereby amended
to add the following:

In relation to an
amendment to a Loan and Security Agreement by and among a wholly-owned subsidiary of the Issuer (the “Borrower”), the
Issuer and Gerber Finance Inc. (the “Lender”) effective December 22, 2017, Mr. Eberwein executed a Guaranty dated November
20, 2017 (the “Guaranty”) pursuant to which Mr. Eberwein, subject to certain limitations, agreed to guaranty to Lender
the prompt payment when due of all debts, liabilities and obligations of the Borrower to the Lender arising from certain permitted
overadvances extended to the Borrower under such Loan and Security Agreement up to $500,000. The foregoing description of the Guaranty
is qualified in its entirety by reference to the full text of the Guaranty, which is attached as Exhibit 99.1 hereto.

Item 7 is hereby
amended to add the following exhibit:

99.1       Guaranty
Agreement.

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 28, 2017