FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL OMB Number: 3235-0104 Expires: January 31, 2005 Estimated average burden hours per response... 0.5

(Print or Type Responses)

1. Name and Address of Reporting Person *   Altor Holdings Ltd 2. Date of Event Requiring Statement (Month/Day/Year) 03/03/2016 3. Issuer Name and Ticker or Trading Symbol AMPCO PITTSBURGH CORP [AP] (Last) (First) (Middle) 11-15 SEATON PLACE 4. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director __X__ 10% Owner _____ Officer (give title below) _____ Other (specify below) 5. If Amendment, Date Original Filed(Month/Day/Year) (Street) ST. HELIER, Y9 JE4 0QH 6. Individual or Joint/Group Filing(Check Applicable Line) ___ Form filed by One Reporting Person _X_ Form filed by More than One Reporting Person (City) (State) (Zip) Table I - Non-Derivative Securities Beneficially Owned

1.Title of Security (Instr. 4) 2. Amount of Securities Beneficially Owned (Instr. 4) 3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 4. Nature of Indirect Beneficial Ownership (Instr. 5) Common Stock 1,017,441 I See footnote (1) Common Stock 743,868 I See footnote (2) Common Stock 2,694 I See footnote (3) Common Stock 12,601 I See footnote (4)

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.			SEC 1473 (7-02)
	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 control number.

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Altor Holdings Ltd 11-15 SEATON PLACE ST. HELIER, Y9 JE4 0QH	Â	  X	Â	Â
Altor Fund II GP Ltd 11-15 SEATON PLACE ST HELIER, Y9 JE4 0QH	Â	  X	Â	Â

Signatures

/s/ Stefan Linder, as director of Altor Holdings Limited		04/01/2016
**Signature of Reporting Person		Date
/s/ Emily Sturgess, as attorney-in-fact for Altor Fund II GP Limited		04/01/2016
**Signature of Reporting Person		Date
/s/ Matthew Hague, as attorney-in-fact for Altor Fund II GP Limited		04/01/2016
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 5(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).
(1)	The shares of Common Stock are directly beneficially owned by Altor Fund II (No. 1) Limited Partnership ("Altor Fund 1"). Altor Holdings Limited ("Altor Holdings") is the sole member of Altor Fund II GP Limited ("Altor GP"), which is the general partner of Altor Fund 1, such that each of Altor Holdings and Altor GP may be deemed a beneficial owner of the shares of Common Stock directly beneficially owned by Altor Fund 1. Each of Altor Holdings and Altor GP disclaims beneficial ownership of the shares of Common Stock directly beneficially owned by Altor Fund 1, except to the extent of its respective pecuniary interest therein.
(2)	The shares of Common Stock are directly beneficially owned by Altor Fund II (No. 2) Limited Partnership ("Altor Fund 2"). Altor Holdings is the sole member of Altor GP, which is the general partner of Altor Fund 2, such that each of Altor Holdings and Altor GP may be deemed a beneficial owner of the shares of Common Stock directly beneficially owned by Altor Fund 2. Each of Altor Holdings and Altor GP disclaims beneficial ownership of the shares of Common Stock directly beneficially owned by Altor Fund 2, except to the extent of its respective pecuniary interest therein.
(3)	The shares of Common Stock are directly beneficially owned by Altor Fund II (No. 3) Limited Partnership ("Altor Fund 3"). Altor Holdings is the sole member of Altor GP, which is the general partner of Altor Fund 3, such that each of Altor Holdings and Altor GP may be deemed a beneficial owner of the shares of Common Stock directly beneficially owned by Altor Fund 3. Each of Altor Holdings and Altor GP disclaims beneficial ownership of the shares of Common Stock directly beneficially owned by Altor Fund 3, except to the extent of its respective pecuniary interest therein.
(4)	The shares of Common Stock are directly beneficially owned by Altor Fund II (No. 4) Limited ("Altor Fund 4"). Altor Holdings is the sole member of Altor GP, which is the investment manager to Altor Fund 4, such that each of Altor Holdings and Altor GP may be deemed a beneficial owner of the shares of Common Stock directly beneficially owned by Altor Fund 4. Each of Altor Holdings and Altor GP disclaims beneficial ownership of the shares of Common Stock directly beneficially owned by Altor Fund 4, except to the extent of its respective pecuniary interest therein.
  Remarks: Exhibit 24.1-Power of Attorney

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, See Instruction 6 for procedure.

Potential persons who are to respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB number.