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

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(Print or Type Responses)

1. Name and Address of Reporting Person *   WOLVERINE ASSET MANAGEMENT LLC 2. Date of Event Requiring Statement (Month/Day/Year) 08/31/2017 3. Issuer Name and Ticker or Trading Symbol CASTLE A M & CO [NONE] (Last) (First) (Middle) 175 W. JACKSON BLVD., SUITE 340 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) CHICAGO, IL 60604 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 70,905 I See Footnotes (1) (2)

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.			SEC 1473 (7-02)
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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
5.00% / 7.00% Convertible Senior Secured Notes due 2022	  (3)	  (3)	Common Stock	2,249,528 (4)	$ (4)	I	See Footnotes (1) (2)

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
WOLVERINE ASSET MANAGEMENT LLC 175 W. JACKSON BLVD., SUITE 340 CHICAGO, IL 60604	Â	  X	Â	Â
Wolverine Holdings, L.P. 175 W. JACKSON BLVD., SUITE 340 CHICAGO, IL 60604	Â	  X	Â	Â
Wolverine Trading Partners, Inc. 175 W. JACKSON BLVD., SUITE 340 CHICAGO, IL 60604	Â	  X	Â	Â
Gust Christopher 175 W. JACKSON BLVD., SUITE 340 CHICAGO, IL 60604	Â	  X	Â	Â
Bellick Robert 175 W. JACKSON BLVD., SUITE 340 CHICAGO, IL 60604	Â	  X	Â	Â

Signatures

/s/ Niraj Patel		09/11/2017
**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)	These securities are directly owned by Wolverine Flagship Fund Trading Limited ("Flagship Fund"), a private investment fund managed by Wolverine Asset Management, LLC ("WAM"). The sole member and manager of WAM is Wolverine Holdings, L.P. ("WH"), of which the general partner is Wolverine Trading Partners, Inc. ("WTP"). Robert Bellick and Christopher Gust may be deemed to control WTP.
(2)	The Reporting Persons are jointly filing this Form 3 pursuant to Rule 16a-3(j) under the Exchange Act.
(3)	The Issuer's 5.00% / 7.00% Convertible Senior Secured PIK Toggle Notes due 2022 (the "Convertible Notes") are convertible at the election of the holder at any time prior to the close of business on the trading day immediately preceding August 31, 2022, the maturity date for the Convertible Notes.
(4)	Upon conversion of the Convertible Notes, the settlement of the conversion right may, at the option of the A.M. Castle & Co. (the "Issuer"), be in the form of shares of common stock, par value $0.01 per share ("Common Stock"), cash or a combination of cash and shares of Common Stock. The reporting persons disclaim beneficial ownership of any shares of Common Stock that they might receive upon conversion of the Convertible Notes. The Convertible Notes are convertible into shares of Common Stock at an initial conversion rate of 0.2654 shares of Common Stock per $1.00 principal amount of Convertible Notes (subject to adjustment in certain circumstances in accordance with the terms of the Convertible Notes).

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