SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549


SCHEDULE 13D

Under the Securities Exchange Act of 1934 (Amendment No. 39)


Ampco-Pittsburgh Corporation
(Name of Issuer)

Common Stock, $1.00 Par Value Per Share
(Title of Class of Securities)


_________032037103__________
(CUSIP Number)

David Goldman
GAMCO Investors, Inc.
One Corporate Center
Rye, New York 10580-1435
(914) 921-5000
(Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications)


  _______________August 13, 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  .

1

CUSIP No. 032037103
1
Names of reporting persons
I.R.S. identification nos. of above persons (entities only)
Gabelli Funds, LLC                             I.D. No.  13-4044523
2
Check the appropriate box if a member of a group (SEE INSTRUCTIONS) (a)
 
 
(b)
 
3
Sec use only
 
4
Source of funds (SEE INSTRUCTIONS)
    00-Funds of investment advisory clients
 
5
Check box if disclosure of legal proceedings is required pursuant to items 2 (d) or 2 (e)
 
 
6
Citizenship or place of organization
   New York
 
Number Of
 
Shares
 
Beneficially
 
Owned
 
By Each
 
Reporting
 
Person
 
With
: 7
:
:
:
Sole voting power
 
545,927  (Item 5)
: 8
:
:
:
Shared voting power
 
None
: 9
:
:
:
Sole dispositive power
 
545,927  (Item 5)
:10
:
:
:
Shared dispositive power
 
None
11
 
 
 
Aggregate amount beneficially owned by each reporting person
 
545,927  (Item 5)
12
 
 
 
Check box if the aggregate amount in row (11) excludes certain shares
(SEE INSTRUCTIONS)
13
 
 
 
Percent of class represented by amount in row (11)
 
4.37%
14
 
 
 
Type of reporting person (SEE INSTRUCTIONS)
    IA, CO

2

CUSIP No. 032037103
1
Names of reporting persons
I.R.S. identification nos. of above persons (entities only)
GAMCO Asset Management Inc.  I.D. No.  13-4044521
2
Check the appropriate box if a member of a group (SEE INSTRUCTIONS) (a)
 
 
(b)
 
3
Sec use only
 
4
Source of funds (SEE INSTRUCTIONS)
 00-Funds of investment advisory clients
 
5
Check box if disclosure of legal proceedings is required pursuant to items 2 (d) or 2 (e)
 
 
6
Citizenship or place of organization
   New York
 
Number Of
 
Shares
 
Beneficially
 
Owned
 
By Each
 
Reporting
 
Person
 
With
: 7
:
:
:
Sole voting power
 
1,343,745 (Item 5)
: 8
:
:
:
Shared voting power
 
None
: 9
:
:
:
Sole dispositive power
 
1,504,745  (Item 5)
:10
:
:
:
Shared dispositive power
 
None
11
 
 
 
Aggregate amount beneficially owned by each reporting person
 
1,504,745  (Item 5)
12
 
 
 
Check box if the aggregate amount in row (11) excludes certain shares
(SEE INSTRUCTIONS)
13
 
 
 
Percent of class represented by amount in row (11)
 
12.05%
14
 
 
 
Type of reporting person (SEE INSTRUCTIONS)
    IA, CO

3

CUSIP No. 032037103
1
Names of reporting persons
I.R.S. identification nos. of above persons (entities only)
Teton Advisors, Inc.                                           I.D. No.  13-4008049
2
Check the appropriate box if a member of a group (SEE INSTRUCTIONS) (a)
 
 
(b)
 
3
Sec use only
 
4
Source of funds (SEE INSTRUCTIONS)
00 – Funds of investment advisory clients
 
5
Check box if disclosure of legal proceedings is required pursuant to items 2 (d) or 2 (e)
 
 
6
Citizenship or place of organization
   Delaware
 
Number Of
 
Shares
 
Beneficially
 
Owned
 
By Each
 
Reporting
 
Person
 
With
: 7
:
:
:
Sole voting power
 
520,000  (Item 5)
: 8
:
:
:
Shared voting power
 
None
: 9
:
:
:
Sole dispositive power
 
520,000  (Item 5)
:10
:
:
:
Shared dispositive power
 
None
11
 
 
 
Aggregate amount beneficially owned by each reporting person
 
520,000  (Item 5)
12
 
 
 
Check box if the aggregate amount in row (11) excludes certain shares
(SEE INSTRUCTIONS)
13
 
 
 
Percent of class represented by amount in row (11)
 
4.16%
14
 
 
 
Type of reporting person (SEE INSTRUCTIONS) 
    IA, CO

4

CUSIP No. 032037103
1
Names of reporting persons
I.R.S. identification nos. of above persons (entities only)
Gabelli & Company Investment Advisers, Inc.                                                      I.D. No.  13-3379374
2
Check the appropriate box if a member of a group (SEE INSTRUCTIONS) (a)
 
 
(b)
 
3
Sec use only
 
4
Source of funds (SEE INSTRUCTIONS)
00 – Client funds
 
5
Check box if disclosure of legal proceedings is required pursuant to items 2 (d) or 2 (e)
 
 
6
Citizenship or place of organization
   Delaware
 
Number Of
 
Shares
 
Beneficially
 
Owned
 
By Each
 
Reporting
 
Person
 
With
: 7
:
:
:
Sole voting power
 
1,200   (Item 5)
: 8
:
:
:
Shared voting power
 
None
: 9
:
:
:
Sole dispositive power
 
1,200   (Item 5)
:10
:
:
:
Shared dispositive power
 
None
11
 
 
 
Aggregate amount beneficially owned by each reporting person
 
1,200   (Item 5)
12
 
 
 
Check box if the aggregate amount in row (11) excludes certain shares
(SEE INSTRUCTIONS)
13
 
 
 
Percent of class represented by amount in row (11)
 
0.01%
14
 
 
Type of reporting person (SEE INSTRUCTIONS)
    HC, CO, IA
 
5

 
CUSIP No. 032037103
1
Names of reporting persons
I.R.S. identification nos. of above persons (entities only)
MJG Associates, Inc.                                                      I.D. No.  06-1304269
2 
Check the appropriate box if a member of a group (SEE INSTRUCTIONS) (a)
 
 
(b)
3
Sec use only
 
 
4
Source of funds (SEE INSTRUCTIONS)
00-Client Funds
 
5 
Check box if disclosure of legal proceedings is required pursuant to items 2 (d) or 2 (e)
 
6
Citizenship or place of organization
   Connecticut
 
Number Of
 
Shares
 
Beneficially
 
Owned
 
By Each
 
Reporting
 
Person
 
With
: 7
:
:
:
Sole voting power
 
12,000  (Item 5)
: 8
:
:
:
Shared voting power
 
None
: 9
:
:
:
Sole dispositive power
 
12,000  (Item 5)
:10
:
:
:
Shared dispositive power
 
None
11
 
 
 
Aggregate amount beneficially owned by each reporting person
 
 12,000  (Item 5)
12
 
 
 
Check box if the aggregate amount in row (11) excludes certain shares
 (SEE INSTRUCTIONS)
13
 
 
 
Percent of class represented by amount in row (11)
 
0.10%
14
 
 
 
Type of reporting person (SEE INSTRUCTIONS)
 CO
 
6

 
CUSIP No. 032037103
1
Names of reporting persons
I.R.S. identification nos. of above persons (entities only)
 GGCP, Inc.                 I.D. No.  13-3056041
2
Check the appropriate box if a member of a group (SEE INSTRUCTIONS) (a)
 
 
(b)
 
3
Sec use only
 
4
Source of funds (SEE INSTRUCTIONS)
   WC
 
5
Check box if disclosure of legal proceedings is required pursuant to items 2 (d) or 2 (e)
 
 
6
Citizenship or place of organization
Wyoming
 
Number Of
 
Shares
 
Beneficially
 
Owned
 
By Each
 
Reporting
 
Person
 
With
: 7
:
:
:
Sole voting power
 
16,000   (Item 5)
: 8
:
:
:
Shared voting power
 
None
: 9
:
:
:
Sole dispositive power
 
16,000   (Item 5)
:10
:
:
:
Shared dispositive power
 
None
11
 
 
 
Aggregate amount beneficially owned by each reporting person
 
16,000   (Item 5)
 
12
 
 
 
Check box if the aggregate amount in row (11) excludes certain shares
(SEE INSTRUCTIONS)  X
13
 
 
 
Percent of class represented by amount in row (11)
 
0.13%
14
 
 
 
Type of reporting person (SEE INSTRUCTIONS)
    HC, CO

7

CUSIP No. 032037103
1
Names of reporting persons
I.R.S. identification nos. of above persons (entities only)
GAMCO Investors, Inc.                                                                                   I.D. No.  13-4007862
2
Check the appropriate box if a member of a group (SEE INSTRUCTIONS) (a)
 
 
(b)
 
3
Sec use only
 
4
Source of funds (SEE INSTRUCTIONS)
None
 
5
Check box if disclosure of legal proceedings is required pursuant to items 2 (d) or 2 (e)
 
 
6
Citizenship or place of organization
   Delaware
 
Number Of
 
Shares
 
Beneficially
 
Owned
 
By Each
 
Reporting
 
Person
 
With
: 7
:
:
:
Sole voting power
 
None  (Item 5)
: 8
:
:
:
Shared voting power
 
None
: 9
:
:
:
Sole dispositive power
 
None (Item 5)
:10
:
:
:
Shared dispositive power
 
None
11
 
 
 
Aggregate amount beneficially owned by each reporting person
 
None (Item 5)
 
12
 
 
 
Check box if the aggregate amount in row (11) excludes certain shares
(SEE INSTRUCTIONS)  X
13
 
 
 
Percent of class represented by amount in row (11)
 
0.00%
 
14
 
 
Type of reporting person (SEE INSTRUCTIONS)
    HC, CO

8

CUSIP No. 032037103
1
Names of reporting persons
I.R.S. identification nos. of above persons (entities only)
Associated Capital Group, Inc.                                                                                  I.D. No. 47-3965991
 
Check the appropriate box if a member of a group (SEE INSTRUCTIONS) (a)
 
 
(b)
3
Sec use only
 
4
Source of funds (SEE INSTRUCTIONS)
None
 
5
Check box if disclosure of legal proceedings is required pursuant to items 2 (d) or 2 (e)
 
 
6
Citizenship or place of organization
  Delaware
 
Number Of
 
Shares
 
Beneficially
 
Owned
 
By Each
 
Reporting
 
Person
 
With
: 7
:
:
:
Sole voting power
 
None   (Item 5)
: 8
:
:
:
Shared voting power
 
None
: 9
:
:
:
Sole dispositive power
 
None   (Item 5)
:10
:
:
:
Shared dispositive power
 
None
11
 
 
 
Aggregate amount beneficially owned by each reporting person
 
None   (Item 5)
 
12
 
 
 
Check box if the aggregate amount in row (11) excludes certain shares
(SEE INSTRUCTIONS)  X
13
 
 
 
Percent of class represented by amount in row (11)
 
0.00%
14
 
 
 
Type of reporting person (SEE INSTRUCTIONS)
    HC, CO
 
9

 
CUSIP No. 032037103
1
Names of reporting persons
I.R.S. identification nos. of above persons (entities only)
Mario J. Gabelli
2
Check the appropriate box if a member of a group (SEE INSTRUCTIONS) (a)
 
 
(b)
 
3
Sec use only
 
4
Source of funds (SEE INSTRUCTIONS)
 None
 
5
Check box if disclosure of legal proceedings is required pursuant to items 2 (d) or 2 (e)
 
 
6
Citizenship or place of organization
   USA
 
Number Of
 
Shares
 
Beneficially
 
Owned
 
By Each
 
Reporting
 
Person
 
With
: 7
:
:
:
Sole voting power
 
None    (Item 5)
: 8
:
:
:
Shared voting power
 
None
: 9
:
:
:
Sole dispositive power
 
None    (Item 5)
:10
:
:
:
Shared dispositive power
 
None
11
 
 
 
Aggregate amount beneficially owned by each reporting person
 
None    (Item 5)
 
12
 
 
 
Check box if the aggregate amount in row (11) excludes certain shares
(SEE INSTRUCTIONS)  X
13
 
 
 
Percent of class represented by amount in row (11)
 
0.00%
14
 
 
 
Type of reporting person (SEE INSTRUCTIONS)
    IN

10

Item 1. Security and Issuer
This Amendment No. 39 to Schedule 13D on the Common Stock of Ampco-Pittsburgh Corporation (the "Issuer") is being filed on behalf of the undersigned to amend the Schedule 13D, as amended (the "Schedule 13D") which was originally filed on August 18, 1988.  Unless otherwise indicated, all capitalized terms used herein but not defined herein shall have the same meanings as set forth in the Schedule 13D.

Item 2. Identity and Background
Item 2 to Schedule 13D is amended, in pertinent part, as follows:
This statement is being filed by Mario J. Gabelli ("Mario Gabelli") and various entities which he
directly or indirectly controls or for which he acts as chief investment officer.  These entities, except for LICT Corporation ("LICT), CIBL, Inc. ("CIBL") and ICTC Group, Inc. ("ICTC"), engage in various aspects of the securities business, primarily as investment adviser to various institutional and individual clients, including registered investment companies and pension plans, and as general partner or the equivalent of various private investment partnerships or private funds.  Certain of these entities may also make investments for their own accounts.
The foregoing persons in the aggregate often own beneficially more than 5% of a class of equity securities of a particular issuer.  Although several of the foregoing persons are treated as institutional investors for purposes of reporting their beneficial ownership on the short-form Schedule 13G, the holdings of those who do not qualify as institutional investors may exceed the 1% threshold presented for filing on Schedule 13G or implementation of their investment philosophy may from time to time require action which could be viewed as not completely passive.  In order to avoid any question as to whether their beneficial ownership is being reported on the proper form and in order to provide greater investment flexibility and administrative uniformity, these persons have decided to file their beneficial ownership reports on the more detailed Schedule 13D form rather than on the short-form Schedule 13G and thereby to provide more expansive disclosure than may be necessary.
(a), (b) and (c) - This statement is being filed by one or more of the following persons: GGCP, Inc.  ("GGCP"), GGCP Holdings LLC ("GGCP Holdings"), GAMCO Investors, Inc. ("GBL"), Associated Capital Group, Inc. ("AC"), Gabelli Funds, LLC ("Gabelli Funds"), GAMCO Asset Management Inc. ("GAMCO"), Teton Advisors, Inc. ("Teton Advisors"), Gabelli & Company Investment Advisers, Inc. ("GCIA"), G.research, LLC ("G.research"), MJG Associates, Inc. ("MJG Associates"), Gabelli Foundation, Inc. ("Foundation"), Mario Gabelli, LICT, CIBL and ICTC.  Those of the foregoing persons signing this Schedule 13D are hereinafter referred to as the "Reporting Persons".
GGCP makes investments for its own account and is the manager and a member of GGCP Holdings which is the controlling shareholder of GBL and AC.  GBL, a public company listed on the New York Stock Exchange, is the parent company for a variety of companies engaged in the securities business, including certain of those named below.  AC, a public company listed on the New York Stock Exchange, is the parent company for a variety of companies engaged in the securities business, including certain of those listed below.
GAMCO, a wholly-owned subsidiary of GBL, is an investment adviser registered under the Investment Advisers Act of 1940, as amended ("Advisers Act").  GAMCO is an investment manager providing discretionary managed account services for employee benefit plans, private investors, endowments, foundations and others.
GCIA, a wholly owned subsidiary of AC, is an investment adviser registered under the Advisers Act and serves as a general partner or investment manager to limited partnerships and offshore investment companies and other accounts.  As a part of its business, GCIA may purchase or sell securities for its own account.  GCIA is a general partner or investment manager of a number of funds or partnerships, including Gabelli Associates Fund, L.P., Gabelli Associates Fund II, L.P., Gabelli Associates Limited, Gabelli Associates Limited II E, ALCE Partners, L.P., Gabelli Capital Structure Arbitrage Fund LP, Gabelli Capital Structure Arbitrage Fund Limited, Gabelli Intermediate Credit Fund L.P., GAMA Select Energy + L.P., GAMCO Medical Opportunities L.P., and Gabelli Multimedia Partners, L.P.
G.research, a wholly owned subsidiary of GCIA, is a broker-dealer registered under the Securities Exchange Act of 1934, as amended ("1934 Act"), which as a part of its business regularly purchases and sells securities for its own account.
Gabelli Funds, a wholly owned subsidiary of GBL, is a limited liability company. Gabelli Funds is an investment adviser registered under the Advisers Act which provides advisory services for The Gabelli Equity Trust Inc., The Gabelli Asset Fund, The GAMCO Growth Fund, The Gabelli Convertible and Income Securities Fund Inc., The Gabelli Value 25 Fund Inc., The Gabelli Small Cap Growth Fund, The Gabelli Equity Income Fund, The Gabelli ABC Fund, The GAMCO Global Telecommunications Fund, The Gabelli Gold Fund, Inc., The Gabelli Multimedia Trust Inc., The Gabelli Global Rising Income & Dividend Fund, The Gabelli Capital Asset Fund, The GAMCO International Growth Fund, Inc., The GAMCO Global Growth Fund, The Gabelli Utility Trust, The GAMCO Global Opportunity Fund, The Gabelli Utilities Fund, The Gabelli Dividend Growth Fund, The GAMCO Mathers Fund, The Gabelli Focus Five Fund, The Comstock Capital Value Fund, The Gabelli Dividend and Income Trust, The Gabelli Global Utility & Income Trust, The GAMCO Global Gold, Natural Resources, & Income Trust, The GAMCO Natural Resources Gold & Income Trust, The GDL Fund, Gabelli Enterprise Mergers & Acquisitions Fund, The Gabelli ESG Fund, Inc., The Gabelli Healthcare & Wellness Rx Trust, The Gabelli Global Small and Mid Cap Value Trust, Gabelli Value Plus+ Trust, The Gabelli Go Anywhere Trust, Bancroft Fund Ltd. and Ellsworth Growth & Income Fund Ltd. (collectively, the "Funds"), which are registered investment companies.  Gabelli Funds is also the investment adviser to the Gabelli Media Mogul NextSharesTM, the Gabelli Food of All Nations NextSharesTM, the RBI NextSharesTM, and the Gabelli Pet Parents' Fund NextSharesTM, and The GAMCO International SICAV (sub-funds GAMCO Merger Arbitrage and GAMCO All Cap Value), a UCITS III vehicle.
Teton Advisors, an investment adviser registered under the Advisers Act, provides discretionary advisory services to The TETON Westwood Mighty Mitessm Fund, The TETON Westwood Income Fund, The TETON Westwood SmallCap Equity Fund, and The TETON Westwood Mid-Cap Equity Fund.
MJG Associates provides advisory services to private investment partnerships and offshore funds.  Mario Gabelli is the sole shareholder, director and employee of MJG Associates.   MJG Associates is the Investment Manager of Gabelli International Limited and Gabelli Fund, LDC.  Mario J. Gabelli is the general partner of Gabelli Performance Partnership, LP.
The Foundation is a private foundation.  Mario Gabelli is the Chairman, a Trustee and the Investment Manager of the Foundation. Elisa M. Wilson is the President of the Foundation.
LICT is a holding company with operating subsidiaries engaged primarily in the rural telephone industry. LICT actively pursues new business ventures and acquisitions. LICT makes investments in marketable securities to preserve capital and maintain liquidity for financing their business activities and acquisitions and are not engaged in the business of investing, or trading in securities. Mario J. Gabelli is the Chief Executive Officer, a director, and substantial shareholder of LICT.
ICTC is a holding company with subsidiaries in voice, broadband and other telecommunications services, primarily in the rural telephone industry. ICTC makes investments in marketable securities to preserve capital and maintain liquidity for financing their business activities and acquisitions and are not engaged in the business of investing, or trading in securities. Mario J. Gabelli is a director, and substantial shareholder of ICTC.
CIBL is a holding company with interests in telecommunications operations, primarily in the rural telephone industry. CIBL actively pursues new business ventures and acquisitions. CIBL makes investments in marketable securities to preserve capital and maintain liquidity for financing their business activities and acquisitions and are not engaged in the business of investing, or trading in securities. Mario J. Gabelli is a director, and substantial shareholder of CIBL.
Mario Gabelli is the controlling stockholder, Chief Executive Officer and a director of GGCP and Chairman and Chief Executive Officer of GBL. He is the Executive Chairman of AC.  Mario Gabelli is also a member of GGCP Holdings. Mario Gabelli is the controlling shareholder of Teton.
The Reporting Persons do not admit that they constitute a group.
GAMCO is a New York corporation and GBL, AC, GCIA, and Teton Advisors are Delaware corporations, each having its principal business office at One Corporate Center, Rye, New York 10580. GGCP is a Wyoming corporation having its principal business office at 140 Greenwich Avenue, Greenwich, CT 06830.   GGCP Holdings is a Delaware limited liability corporation having its principal business office at 140 Greenwich Avenue, Greenwich, CT 06830.  G.research is a Delaware limited liability company having its principal officers at One Corporate Center, Rye, New York 10580.  Gabelli Funds is a New York limited liability company having its principal business office at One Corporate Center, Rye, New York 10580.  MJG Associates is a Connecticut corporation having its principal business office at 140 Greenwich Avenue, Greenwich, CT 06830.  The Foundation is a Nevada corporation having its principal offices at 165 West Liberty Street, Reno, Nevada 89501.  LICT is a Delaware corporation having its principal place of business as 401 Theodore Fremd Avenue, Rye, New York 10580. CIBL, Inc. is a Delaware corporation having its principal place of business as 165 West Liberty Street, Suite 220, Reno, NV 89501.  ICTC Group Inc. is a Delaware corporation having its principal place of business as 556 Main Street, Nome, North Dakota 58062.
For information required by instruction C to Schedule 13D with respect to the executive officers and directors of the foregoing entities and other related persons (collectively, "Covered Persons"), reference is made to Schedule I annexed hereto and incorporated herein by reference.
(d) – Not applicable.
(e) – Not applicable.
 (f) – Reference is made to Schedule I hereto.

Item 3. Source and Amount of Funds or Other Consideration
Item 3 to Schedule 13D is amended, in pertinent part, as follows:
The Reporting Persons used an aggregate of approximately $2,035,969 to purchase the additional Securities reported as beneficially owned in Item 5 since the most recent filing on Schedule 13D.  GAMCO and Gabelli Funds used approximately $1,243,915 and $140,728, respectively, of funds that were provided through the accounts of certain of their investment advisory clients (and, in the case of some of such accounts at GAMCO, may be through borrowings from client margin accounts) in order to purchase the additional  Securities for such clients.  GCIA used approximately $16,330 of client funds to purchase the additional Securities reported by it. Teton Advisors used approximately $634,996 of client funds to purchase the additional Securities reported by it.

Item 5. Interest In Securities Of The Issuer
Item 5 to Schedule 13D is amended, in pertinent part, as follows:
The aggregate number of Securities to which this Schedule 13D relates is 2,599,872 shares, representing 20.81% of the 12,491,487 shares outstanding as reported in the Issuer's most recent Form 10-Q for the quarterly period ended June 30, 2018.  The Reporting Persons beneficially own those Securities as follows:
 
Name
 
Shares of
Common Stock
% of Class of
Common
Gabelli Funds
 
545,927
4.37%
GAMCO
 
1,504,745
12.05%
Teton Advisors
520,000
4.16%
 
GGCP
16,000
0.13%
 
GCIA
 
1,200
0.01%
MJG Associates
12,000
0.10%

Mario Gabelli is deemed to have beneficial ownership of the Securities owned beneficially by each of the foregoing persons.  GCIA is deemed to have beneficial ownership of the Securities owned beneficially by G.research.  AC, GBL and GGCP are deemed to have beneficial ownership of the Securities owned beneficially by each of the foregoing persons other than Mario Gabelli and the Foundation.
(b) Each of the Reporting Persons and Covered Persons has the sole power to vote or direct the vote and sole power to dispose or to direct the disposition of the Securities reported for it, either for its own benefit or for the benefit of its investment clients or its partners, as the case may be, except that (i) GAMCO does not have the authority to vote 161,000 of its reported shares,  (ii) Gabelli Funds has sole dispositive and voting power with respect to the shares of the Issuer held by the Funds so long as the aggregate voting interest of all joint filers does not exceed 25% of their total voting interest in the Issuer and, in that event, the Proxy Voting Committee of each Fund shall respectively vote that Fund's shares, (iii) at any time, the Proxy Voting Committee of each such Fund may take and exercise in its sole discretion the entire voting power with respect to the shares held by such fund under special  circumstances such as regulatory considerations, and (iv) the power of Mario Gabelli, AC, GBL, and GGCP is indirect with respect to Securities beneficially owned directly by other Reporting Persons.
(c) Information with respect to all transactions in the Securities which were effected during the past sixty days or since the most recent filing on Schedule 13D, whichever is less, by each of the Reporting Persons and Covered Persons is set forth on Schedule II annexed hereto and incorporated herein by reference.
(e) Not applicable.
11

Signature
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.
Dated: August 14, 2018

GGCP, INC.
MARIO J. GABELLI
MJG ASSOCIATES, INC.


By:/s/ David Goldman
     David Goldman
     Attorney-in-Fact



TETON ADVISORS, INC.
GABELLI FUNDS, LLC


By:/s/ David Goldman 
     David Goldman
     General Counsel – Gabelli Funds, LLC
    Counsel-Teton Advisors, Inc.



GAMCO INVESTORS, INC.


By:/s/ Kevin Handwerker
Kevin Handwerker
General Counsel &Secretary – GAMCO Investors, Inc.


ASSOCIATED CAPITAL GROUP, INC.
GAMCO ASSET MANAGEMENT INC.
GABELLI & COMPANY INVESTMENT ADVISERS, INC.


By:/s/ Douglas R. Jamieson
Douglas R. Jamieson
President & Chief Executive Officer – Associated Capital
Group, Inc.
President – GAMCO Asset Management Inc.
President – Gabelli & Company Investment Advisers, Inc.



12

SCHEDULE I
     Information with Respect to Executive
Officers and Directors of the Undersigned
Schedule I to Schedule 13D is amended, in pertinent part, as follows:

The following sets forth as to each of the executive officers and directors of the undersigned: his name; his business address; his present principal occupation or employment and the name, principal business and address of any corporation or other organization in which such employment is conducted.  Unless otherwise specified, the principal employer of each such individual is GAMCO Asset Management Inc., Gabelli Funds, LLC, Gabelli & Company Investment Advisers, Inc., G.research, LLC, Teton Advisors, Inc., Associated Capital Group, Inc. or GAMCO Investors, Inc., the business address of each of which is One Corporate Center, Rye, New York 10580, and each such individual identified below is a citizen of the United States.  To the knowledge of the undersigned, during the last five years, no such person has been convicted in a criminal proceeding (excluding traffic violations or similar misdemeanors), and no such person was a party to a civil proceeding of a judicial or administrative body of competent jurisdiction as a result of which he was or is subject to a judgment, decree or final order enjoining future violations of, or prohibiting or mandating activities subject to, federal or state securities law or finding any violation with respect to such laws except as reported in Item 2(d) and (e) of this Schedule 13D.



















13



GAMCO Investors, Inc.
Directors:
   
 
               Edwin L. Artzt
 
 
 
 
Raymond C. Avansino
 
 
 
 
              Leslie B. Daniels
 
Former Chairman and Chief Executive Officer
Procter & Gamble Company
900 Adams Crossing
Cincinnati, OH 45202
 
Chairman & Chief Executive Officer
E.L. Wiegand Foundation
165 West Liberty Street
Reno, NV 89501
 
Director
c/o GAMCO Investors, Inc.
One Corporate Center
Rye, NY 10580
 
 
Mario J. Gabelli
 
 
 
 
 
 
              Elisa M. Wilson
Chief Executive Officer and Chief Investment Officer of GGCP, Inc.
Chairman & Chief Executive Officer of GAMCO Investors, Inc.
Executive Chairman of Associated Capital Group, Inc.
Director/Trustee of all registered investment companies advised by Gabelli Funds, LLC.
 
Director
c/o GAMCO Investors, Inc.
One Corporate Center
Rye, NY 10580
 
     
               Eugene R. McGrath
 
Former Chairman and Chief Executive Officer
Consolidated Edison, Inc.
4 Irving Place
New York, NY 10003
 
 
               Robert S. Prather
 
 
President & Chief Executive Officer
Heartland Media, LLC
1843 West Wesley Road
Atlanta, GA 30327
 
 
Officers:
   
Mario J. Gabelli
 
Chairman and Chief Executive Officer
 
 
Henry G. Van der Eb
 
Bruce N. Alpert
 
Agnes Mullady
 
Kevin Handwerker
 
Kieran Caterina
 
Diane LaPointe
Senior Vice President
 
Senior Vice President
 
Senior Vice President
 
Executive Vice President, General Counsel and Secretary
 
Co-Chief Accounting Officer
 
Co-Chief Accounting Officer
 
     
     
GAMCO Asset Management Inc.
Directors:
 
   
Douglas R. Jamieson
Regina M. Pitaro
William S. Selby
 
   
Officers:
 
   
Mario J. Gabelli
Chief Executive Officer and Chief Investment Officer – Value Portfolios
 
 
Douglas R. Jamieson
 
               David Goldman
 
President, Chief Operating Officer and Managing Director
 
General Counsel, Secretary & Chief Compliance Officer
 
 
Gabelli Funds, LLC
Officers:
 
   
Mario J. Gabelli
 
Chief Investment Officer – Value Portfolios
 
Bruce N. Alpert
Executive Vice President and Chief Operating Officer
 
 
               Agnes Mullady
President and Chief Operating Officer – Open End Fund Division
 
 
               David Goldman
 
General Counsel
 
     
 
Gabelli Foundation, Inc.
Officers:
 
                Mario J. Gabelli
Chairman, Trustee & Chief Investment Officer
 
                Elisa M. Wilson
 
                Marc Gabelli
 
                Matthew R. Gabelli
 
                Michael Gabelli
President
 
Trustee
 
Trustee
 
Trustee








14








GGCP, Inc.
Directors:
 
               Mario J. Gabelli
 
Chief Executive Officer and Chief Investment Officer of GGCP, Inc.
Chairman & Chief Executive Officer of GAMCO Investors, Inc.
Executive Chairman of Associated Capital Group, Inc.
Director/Trustee of all registered investment companies advised by Gabelli Funds, LLC.
 
Marc Gabelli
 
President – GGCP, Inc.
Matthew R. Gabelli
 
Vice President – Trading
G.research, LLC
One Corporate Center
Rye,  NY 10580
 
              Michael Gabelli
 
 
President & COO
Gabelli & Partners, LLC
One Corporate Center
Rye, NY 10580
 
 
              Frederic V. Salerno
 
Chairman
Former Vice Chairman and Chief Financial Officer
Verizon Communications
 
 
               Vincent S. Tese
 
Executive Chairman – FCB Financial Corp
   
Officers:
 
Mario J. Gabelli
Chief Executive Officer and Chief Investment Officer
              Marc Gabelli
President
              Francis J. Conroy
Special Assistant to CEO, Secretary
              Silvio A. Berni
 
Chief Financial and Accounting Officer, Vice President Corporate Development and Controller, Assistant Secretary
   
GGCP Holdings LLC
Members:
 
              GGCP, Inc.
 
              Mario J. Gabelli
 
 
 
Manager and Member
 
Member





15






 
Teton Advisors, Inc.
Directors:
 
Stephen G. Bondi
 
               Nicholas F. Galluccio
 
               Vincent J. Amabile
 
               John M. Tesoro, CPA
 
               Aaron J. Feingold, M.D.
 
Chairman of the Board
 
Chief Executive Officer and President
 
Founder- Amabile Partners
 
Retired Partner – KPMG LLP
 
President and Founder – Raritan Bay Cardiology Group
Officers:
 
 
               Nicholas F. Galluccio
 
               Michael J. Mancuso
 
               Tiffany Hayden
 
 
See above
 
Chief Financial Officer
 
Secretary
   



 
16




 
Associated Capital Group, Inc.
Directors:
 
Mario J. Gabelli
 
Chief Executive Officer and Chief Investment Officer of GGCP, Inc.
Chairman & Chief Executive Officer of GAMCO Investors, Inc.
Executive Chairman of Associated Capital Group, Inc.
Director/Trustee of all registered investment companies advised by Gabelli Funds, LLC.
 
Richard L. Bready
 
Former Chairman and Chief Executive Officer
Nortek, Inc.
50 Kennedy Plaza
Providence, RI 02903
 
 
              Marc Gabelli
 
 
President – GGCP, Inc.
              Douglas R. Jamieson
President and Chief Executive Officer
 
              Bruce Lisman
 
 
Former Chairman - JP Morgan – Global Equity Division
Daniel R. Lee
 
 
 
Chief Executive Officer
Full House Resorts, Inc.
4670 South Ford Apache Road, Suite 190
Las Vegas, NV 89147
 
              Salvatore F. Sodano
 
Vice Chairman – Broadridge Financial Solutions
 
 
              Frederic V. Salerno
 
 
 
See above
Officers:
 
Mario J. Gabelli
 
               Douglas R. Jamieson
 
               Francis J. Conroy
 
               Kevin Handwerker
 
              David Fitzgerald
 
Executive Chairman
 
President and Chief Executive Officer
 
Interim Chief Financial Officer
 
Executive Vice President, General Counsel and Secretary
 
Assistant Secretary
   
Gabelli & Company Investment Advisers, Inc.
 
Directors:
 
 
              Douglas R. Jamieson
 
 

Officers:
 
              Douglas R. Jamieson
 
Kevin Handwerker
 
David Fitzgerald
Chief Executive Officer and President
 
Executive Vice President, General Counsel and Secretary
 
Assistant Secretary
 
G.research, LLC
 
 
Officers:
 
               Cornelius V. McGinity
 
               Maria Gigi
 
President
 
Controller and Financial Operations Principal
Bruce N. Alpert
 
               Douglas R. Jamieson
 
               Kevin Handwerker
 
               David Fitzgerald
 
               David Goldman
 
               Josephine D. LaFauci
Vice President
 
Secretary
 
Assistant Secretary
 
Assistant Secretary
 
Assistant Secretary
 
Chief Compliance Officer



 
17








                                 SCHEDULE II
                            INFORMATION WITH RESPECT TO
                 TRANSACTIONS EFFECTED DURING THE PAST SIXTY DAYS OR
                 SINCE THE MOST RECENT FILING ON SCHEDULE 13D (1)
                                   SHARES PURCHASED        AVERAGE
                        DATE            SOLD(-)             PRICE(2)

 COMMON STOCK-AMPCO-PITTSBURGH CORPORATION

          GAMCO ASSET MANAGEMENT INC.
                       8/13/18            2,900             8.6500
                       8/13/18            4,400             8.5504
                       8/10/18            4,000             8.6795
                       8/10/18            9,784             8.6836
                       8/09/18            2,000-            9.7888
                       8/09/18            1,500             9.9267
                       8/09/18            2,300-            9.9316
                       8/08/18            1,000             9.7800
                       8/06/18              500            10.2000
                       8/02/18              500            10.3059
                       7/25/18            4,700             9.7262
                       7/24/18            1,800            10.0908
                       7/24/18            1,400-            9.8059
                       7/24/18            2,000-            9.5970
                       7/23/18            1,000             9.8500
                       7/23/18              600-            9.7000
                       7/23/18            2,000-            9.6663
                       7/19/18              200            10.0500
                       7/18/18              900-             *DO
                       7/18/18            8,100-             *DO
                       7/17/18            1,000             9.9525
                       7/17/18              400             9.8750
                       7/17/18            1,500             9.8921
                       7/16/18            1,500             9.8000
                       7/16/18            4,480-            9.7822
                       7/16/18            3,000             9.7667
                       7/16/18            1,000-            9.7951
                       7/13/18              300-             *DO
                       7/13/18              300-             *DO
                       7/12/18            1,700-             *DO
                       7/12/18            1,100             9.9386
                       7/11/18              500            10.2500
                       7/11/18            1,000-           10.2500
                       7/11/18              200             9.6000
                       7/10/18            1,601            10.2984
                       7/10/18              700-           10.2500
                       7/06/18              800-           10.6375
                       6/29/18            5,000            10.3389
                       6/29/18              500-           10.2500
                       6/27/18              800-             *DO
                       6/26/18              611            10.1500
                       6/22/18              600            10.0333
                       6/22/18              500            10.0000
                       6/21/18            1,000-            9.7000
                       6/21/18            2,000             9.7000
                       6/20/18            1,500             9.6865
                       6/20/18            2,000             9.8175
                       6/19/18            1,500             9.9000
                       6/18/18              500-            9.6000
                       6/14/18              500-            9.7000
                       6/14/18            2,000            10.2000
          GABELLI FUNDS, LLC.
             GABELLI SMALL CAP GROWTH FUND
                       8/13/18           12,000             8.6586
             GABELLI GLOBAL SMALL AND MIDCAP VALUE TRUST
                       6/26/18            6,008-           10.2657
             GABELLI GLOBAL RISING INCOME AND DIVIDEND FUND
                       8/13/18            5,000             8.5500
             GABELLI EQUITY TRUST
                       7/25/18            3,227             9.8500
             GABELLI GLOBAL UTILITY & INCOME TRUST
                       6/27/18            3,000-           10.5201
                                                                                             
(1) UNLESS OTHERWISE INDICATED, ALL TRANSACTIONS WERE EFFECTED
    ON THE NYSE.

(2) PRICE EXCLUDES COMMISSION.

(*) RESULTS IN CHANGE OF DISPOSITIVE POWER AND BENEFICIAL OWNERSHIP.


18