SECURITIES AND EXCHANGE COMMISSION

Washington, DC 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. 3)*

SIFCO Industries, Inc.

(Name of Issuer)

Common Stock, $1.00 Par Value

(Title of Class of Securities)

826546-10-3

(CUSIP Number)

Janice G. Carlson, Trustee

31556 Tres Lomas

Bulverde, TX 78163

830-980-2749

(Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications)

January 15, 2015

(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.

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).

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This statement relates to Common Stock, par value $1.00 per share (“Common Stock”), of SIFCO Industries, Inc., an Ohio corporation (“SIFCO”), whose principal executive offices are located at 970 East 64th Street, Cleveland, Ohio 44103.

This statement is filed by Charles H. Smith, III and Janice G. Carlson as Trustees (collectively the “Trustees”) under the Voting Trust Agreement, dated January 31, 2013, as extended by the Voting Trust Extension Agreement, dated as of January 15, 2015, which extends the Voting Trust until January 31, 2017 as per the attached exhibit (collectively, the “Voting Trust Agreement”).

Information as to each of these individuals is set forth below:

(a) Charles H. Smith, III.

(b) Mr. Smith’s residence address is 1200 First Street, Apt. 1231, Alexandria, VA 22314.

(c) Mr. Smith’s present principal occupation is Chief Executive Officer at 3-iT Accounting and Financial Services Corp., 1800 Diagonal Road, Suite 600, Alexandria, VA 22314.

(d) Mr. Smith has not, during the last five years, been convicted in any criminal proceeding (excluding traffic violations or similar misdemeanors).

(e) Mr. Smith has not, during the last five years, been a party to any civil proceeding as a result of which he is subject to any judgment, decree or final order enjoining future violations of, or prohibiting or mandating activities subject to, federal or state securities laws or finding any violations with respect to such laws.

(f) Mr. Smith is a citizen of the United States.

(a) Janice G. Carlson

(b) Mrs. Carlson’s residence address is 31556 Tres Lomas, Bulverde, TX 78163.

(C) Mrs. Carlson’s present principal occupation is homemaker.

(d) Mrs. Carlson has not, during the last five years, been convicted in any criminal proceeding (excluding traffic violations or similar misdemeanors).

(e) Mrs. Carlson has not, during the last five years, been a party to any civil proceeding as a result of which she is subject to any judgment, decree or final order enjoining future violations of, or prohibiting or mandating activities subject to, federal or state securities laws or finding any violations with respect to such laws.

(f) Mrs. Carlson is a citizen of the United States.

Mr. Smith and Mrs. Carlson currently own, as Trustees, 1,994,674 shares of the Common Stock pursuant to the Voting Trust Agreement. The Voting Trust Agreement was renewed for a term beginning January 31, 2015 and ending January 31, 2017.

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The purpose of the formation of the Voting Trust Agreement is to continue the investment of the signing shareholders in SIFCO and to continue to maintain the stability of SIFCO through the Trustees’ exercise of voting control over the SIFCO Common Stock in the Voting Trust. This statement is being filed due to the extension of the Voting Trust Agreement through January 31, 2017.

The Trustees have no plan or proposal that would result in:

(a) the acquisition or disposition of any additional SIFCO securities by any person;

(b) an extraordinary corporate transaction such as a merger, reorganization or liquidation involving SIFCO or any of its subsidiaries;

(c) a sale or transfer of a material amount of assets of SIFCO or any of its subsidiaries;

(d) any change in the present Board of Directors or management of SIFCO, including any plan or proposal to change the number or term of directors or fill any existing vacancies on the Board;

(e) any material change in the present capitalization or dividend policy of SIFCO;

(f) any other material change in SIFCO’s business or corporate structure;

(g) changes in SIFCO’s Articles of Incorporation or Regulations or instruments corresponding thereto or other actions which may impede the acquisition of control of SIFCO by any person;

(h) causing a class of securities of SIFCO to be delisted from a national securities exchange or to cease to be authorized to be quoted in an inter-dealer quotation system of a registered national securities association;

(i) a class of equity securities of SIFCO becoming eligible for termination of registration pursuant to Section 12(g)(4) of the Securities Exchange Act of 1934, as amended; or

(j) any action similar to any of those enumerated above.

(a) The aggregate number of SIFCO shares of Common Stock subject to the Voting Trust Agreement is 1,994,674, constituting approximately 36.8% of the 5,413,129 Shares of SIFCO outstanding on October 31, 2014. The ownership of voting trust certificates under the Voting Trust Agreement is set forth on Exhibit 1.

(b) Mr. Smith and Mrs. Carlson, as Trustees, share the power to vote the Common Stock subject to the Voting Trust Agreement. Although the Trustees do not have the power to dispose of the Common Stock subject to the Voting Trust, they share the power to terminate the Voting Trust or to return Common Stock subject to the Trust to holders of voting trust certificates.

(c) There were no transactions in the Common Stock during the past 60 days.

(d) Under the terms of the Voting Trust Agreement, all dividends paid with respect to SIFCO Shares are distributed to the holders of the related voting trust certificates.

(e) Not applicable.

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The Voting Trust Agreement was extended for an additional two-year term ending January 31, 2017. The Trustees may terminate the trust during the extended term by notice to the holders of the voting trust certificates.

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Signatures

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

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Exhibit 1

VOTING TRUST EXTENSION AGREEMENT

THIS AGREEMENT entered into by and among those holders of Common Shares of SIFCO Industries, Inc. executing and delivering this Agreement (“Shareholders”) and JANICE G. CARLSON and CHARLES H. SMITH, III, as Trustees and their successors in trust (said named Trustees and their successors being hereinafter called the “Trustees”);

WITNESSES THAT:

As of February 1, 2013 certain shareholders of SIFCO Industries, Inc. (the “Company”) entered into a Voting Trust Agreement (the “Trust Agreement”) with respect to their shares of Common Stock in the Company; and

Pursuant to Section 14 of the Trust Agreement, the term of Trust Agreement may be extended for an additional period not to exceed two years upon the concurrence of the holders of Trust Certificates representing not less than 85% of the 1,994,674 shares deposited under the Trust Agreement, (after giving effect to stock dividends issued subsequent to the date of the Trust Agreement, the “Trust Shares”); and

The shareholders constituting the holders of Trust Certificates representing not less than 85% of the Trust Shares, wish to extend the term of the Trust Agreement, on the terms and conditions set forth therein, for an additional two (2) years from January 31, 2015.

NOW, THEREFORE, each Shareholder of the Company who becomes a party hereto agrees with each of the other such Shareholders for himself and his heirs, administrators, successors and assigns as follows:

1. EXTENSION OF TRUST AGREEMENT. The Trust Agreement shall be extended, unless sooner terminated on the terms and conditions set forth therein, to January 31, 2017, upon the occurrence prior to January 31, 2015 of the earlier of either:

(a) the execution of this Agreement by the holders of not less than 1,695,472 shares of Common Stock of the Company, such number representing not less than 85% of the Trust Shares,

Or

(b) the presentation to the Company of a certificate signed by the Secretary of the meeting, certifying that at a meeting duly called and held for the purpose of considering an extension, at a place in Cuyahoga County, Ohio, specified in a notice given either by the Trustees or a Trust Certificate holder, not less than ten (10) nor more than thirty (30) days prior to such meeting to each Trust Certificate holder under the Trust Agreement, the holders of Trust Certificates representing not less than eighty-five (85) percent of the Trust Shares voted in favor of this extension.

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2. DEFINED TERMS. Capitalized terms used herein and not otherwise defined shall have the meanings assigned to them in the Trust Agreement.

3. EXECUTION. This Extension Agreement may be executed in any number of counterparts, each of which, when executed, shall be deemed to be an original and all of which together shall constitute but one and the same instrument. This Extension Agreement shall inure to the benefit of, and be binding upon, all persons executing it and their respective heirs, executors, administrators, legatees and assigns.

IN WITNESS WHEREOF, the Trustees have executed and delivered this Extension Agreement and the Shareholders have become parties hereto in the manner herein before provided.

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VOTING TRUST EXTENSION AGREEMENT

TO JANUARY 31, 2017

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VOTING TRUST EXTENSION AGREEMENT

TO JANUARY 31, 2017

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VOTING TRUST EXTENSION AGREEMENT

TO JANUARY 31, 2017

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VOTING TRUST EXTENSION AGREEMENT

TO JANUARY 31, 2017

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VOTING TRUST EXTENSION AGREEMENT

TO JANUARY 31, 2017

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