SEC Form 4

FORM 4		UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940	OMB APPROVAL OMB Number: 3235-0287 Estimated average burden hours per response: 0.5
	Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

1. Name and Address of Reporting Person* CD&R Allied Holdings, L.P. (Last) (First) (Middle) C/O MAPLES CORPORATE SERVICES LIMITED PO BOX 309, UGLAND HOUSE (Street) GRAND CAYMAN E9 KY1-1104 (City) (State) (Zip)	2. Issuer Name and Ticker or Trading Symbol Atkore International Group Inc. [ ATKR ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) Director X 10% Owner Officer (give title below) Other (specify below)
	3. Date of Earliest Transaction (Month/Day/Year) 12/13/2016
	4. If Amendment, Date of Original Filed (Month/Day/Year)	6. Individual or Joint/Group Filing (Check Applicable Line) Form filed by One Reporting Person X Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	12/13/2016		S		8,000,000	D	$19	42,010,377	I	By affiliate(1)(2)

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

1. Name and Address of Reporting Person* CD&R Allied Holdings, L.P. (Last) (First) (Middle) C/O MAPLES CORPORATE SERVICES LIMITED PO BOX 309, UGLAND HOUSE (Street) GRAND CAYMAN E9 KY1-1104 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* CD&R Associates VIII, Ltd. (Last) (First) (Middle) C/O MAPLES CORPORATE SERVICES LIMITED P.O. BOX 309, UGLAND HOUSE (Street) GRAND CAYMAN E9 KY1-1104 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* CD&R ASSOCIATES VIII, LP (Last) (First) (Middle) C/O MAPLES CORPORATE SERVICES LIMITED P.O. BOX 309, UGLAND HOUSE (Street) GRAND CAYMAN E9 KY1-1104 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* CD&R Investment Associates VIII, Ltd. (Last) (First) (Middle) C/O MAPLES CORPORATE SERVICES LIMITED PO BOX 309, UGLAND HOUSE (Street) GRAND CAYMAN E9 KY1-1104 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

Explanation of Responses:

1. Following the transaction reported herein, CD&R Allied Holdings, L.P. ("CD&R Holdings") directly owns 42,010,377 shares of Common Stock. CD&R Associates VIII, Ltd., as the general partner of CD&R Holdings, CD&R Associates VIII, L.P., as the sole stockholder of CD&R Associates VIII, Ltd., and CD&R Investment Associates VIII, Ltd., as the general partner of CD&R Associates VIII, L.P., may each be deemed to beneficially own the shares of Common Stock held by CD&R Holdings.

2. Each of CD&R Associates VIII, Ltd., CD&R Associates VIII, L.P. and CD&R Investment Associates VIII, Ltd. expressly disclaims beneficial ownership of the shares of Common Stock held by CD&R Holdings, except to the extent of its pecuniary interest therein.

Remarks:

	CD&R Allied Holdings, L.P. By: CD&R Associates VIII, Ltd., its general partner, By: /s/ Theresa A. Gore, VP, Treas. and Asst. Sec.	12/13/2016
	CD&R Associates VIII, Ltd. By: /s/ Theresa A. Gore, VP, Treas. and Asst. Sec.	12/13/2016
	CD&R Associates VIII, L.P. By: CD&R Investment Associates VIII, Ltd., its general partner, By: /s/ Theresa A. Gore, VP, Treas. and Asst. Sec.	12/13/2016
	CD&R Investment Associates VIII, Ltd. By: /s/ Theresa A. Gore, VP, Treas. and Asst. Sec.	12/13/2016
	** Signature of Reporting Person	Date
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