Ownership Submission
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 *
  BIEMER ALBERT J
 2. Date of Event Requiring Statement (Month/Day/Year)
04/22/2010		 3. Issuer Name and Ticker or Trading Symbol
CASTLE A M & CO [CAS]
(Last)
(First)
(Middle)
3400 NORTH WOLF ROAD		 4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
Vice President, Supply Chain
 5. If Amendment, Date Original Filed(Month/Day/Year)
(Street)

FRANKLIN PARK, IL 60131		 6. Individual or Joint/Group Filing(Check Applicable Line)
_X_ Form filed by One Reporting Person
___ 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 2,600
D
 

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
Restricted Stock Units   (1)   (1) Common Stock 3,700 $ (2) D  
Performance Share Units   (3)   (3) Common Stock 3,700 (4) $ (5) D  
Employee Stock Options (right to buy) 03/18/2013 03/17/2018 Common Stock 7,300 $ 12.79 D  
Employee Stock Options (right to buy) 10/23/2004 10/23/2013 Common Stock 4,667 $ 5.21 D  

Reporting Owners

Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
BIEMER ALBERT J
3400 NORTH WOLF ROAD
FRANKLIN PARK, IL 60131		       Vice President, Supply Chain  

Signatures

Robert J. Perna, Attorney-in-Fact 05/03/2010
**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 restricted stock units vest in full on December 31, 2012, provided the reporting person is employed by A. M. Castle & Co. on the vesting date.
(2) Each restricted stock unit represents a contingent right to receive one share of common stock of A. M. Castle & Co. (the "Company").
(3) The PSUs will vest on December 31, 2012, if the reporting person remains employed by the Company over the performance period and the Company determines that it acheived certain total shareholder return ("TSR") performance goals. The performance period begins on January 1, 2010 and ends December 31, 2012. Once vested, payout for PSU's can range from 0% to 200% based on the Company's relative TSR over the performance period as compared to a group of peer companies. TSR is measured generally as the increase or decrease in the market value of Company common stock including the reinvestment of dividends.
(4) The grant amount of 3,700 PSUs assumes 100% vesting. Since payout for PSUs can range from 0% to 200%, the maximum number of shares that could vest and be distributed is 7,400.
(5) Each performance share unit (PSU) represents a contingent right to receive one share of A. M. Castle & Co. common stock.
 
Remarks:
Exhibit List:
Exhibit 24 - Power of Attorney

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