SEC Form 3

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 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person* WOLVERINE ASSET MANAGEMENT LLC (Last) (First) (Middle) 175 W. JACKSON BLVD., SUITE 340 (Street) CHICAGO IL 60604 (City) (State) (Zip)	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 ]
		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 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 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)

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: 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)

1. Name and Address of Reporting Person* WOLVERINE ASSET MANAGEMENT LLC (Last) (First) (Middle) 175 W. JACKSON BLVD., SUITE 340 (Street) CHICAGO IL 60604 (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* Wolverine Holdings, L.P. (Last) (First) (Middle) 175 W. JACKSON BLVD., SUITE 340 (Street) CHICAGO IL 60604 (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* Wolverine Trading Partners, Inc. (Last) (First) (Middle) 175 W. JACKSON BLVD., SUITE 340 (Street) CHICAGO IL 60604 (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* Gust Christopher (Last) (First) (Middle) 175 W. JACKSON BLVD., SUITE 340 (Street) CHICAGO IL 60604 (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* Bellick Robert (Last) (First) (Middle) 175 W. JACKSON BLVD., SUITE 340 (Street) CHICAGO IL 60604 (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. 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).

	/s/ Niraj Patel	09/11/2017
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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