FORM 4  
 
Check this box if no longer
subject to Section 16. Form 4 or
Form 5 obligations may continue.
See Instruction 1(b).
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN 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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1. Name and Address of Reporting Person * 

Paul J Winsauer

3400 North Wolf Road

Franklin Park,  IL  60131		2. Issuer Name and Ticker or Trading Symbol

A.M.Castle and Co. (CAS)
5. Relationship of Reporting Person(s) to Issuer
            (Check all applicable)
    Director
    10% Owner
 X  Officer (give title below)
    Other (specify below)
 
Vice President
3. Date of Earliest Transaction
(Month/Day/Year)

06/08/2005
4. If Amendment, Date Original Filed
(Month/Day/Year)

 		 6. Individual or Joint/Group Filing (Check Applicable Line)

 X  Form filed by One Reporting Person
    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)
CodeVAmount(A)
or
(D)		Price
Common Stock06/08/200506/08/2005M   7,334A$5.219,511D 
Common Stock06/08/200506/08/2005M   2,967A$6.3912,478D 
Common Stock06/08/200506/08/2005M   9,033A$6.3921,511D 
Common Stock06/08/200506/08/2005M   2,133A$7.0523,644D 
Common Stock06/08/200506/08/2005M   2,134A$7.0525,778D 
Common Stock06/08/200506/08/2005F   3,792D$15.2221,986D 
Common Stock06/08/200506/08/2005F   988D$15.2220,998D 
Common Stock06/08/200506/08/2005F   2,831D$15.2218,167D 
Common Stock06/08/200506/08/2005F   988D$15.2217,179D 
Common Stock06/08/200506/08/2005F   2,510D$15.2214,669D 
Common Stock06/08/200506/08/2005F   1,245D$15.2213,424D 
Common Stock         395.2064IBy PAYSOP Plan
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly. SEC 1474 (9-02)
* If the form is filed by more than one reporting person, see Instruction 4(b)(v)
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 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
Underlying Securities
(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 of
Derivative
Security:
Direct (D)
or Indirect (I)
(Instr. 4)		11. Nature of Indirect
Beneficial Ownership
(Instr. 4)
CodeV(A)(D)Date
Exercisable		Expiration
Date		TitleAmount
or
Number
of
Shares
Stock Options (Right to buy)$10.00        07/27/200107/27/2010Common Stock18,000 18,000D 
Stock Options (Right to buy)$11.00        07/26/200207/26/2011Common Stock18,000 18,000D 
Stock Options (Right to buy)$16.00        07/22/200007/22/2009Common Stock14,000 14,000D 
Stock Options (Right to buy)$5.2106/08/200506/08/2005M    7,33410/23/200410/23/2013Common Stock7,334$5.2114,666D 
Stock Options (Right to buy)$6.3906/08/200506/08/2005M    9,03310/24/200310/24/2012Common Stock9,033$6.398,967D 
Stock Options (Right to buy)$6.3906/08/200506/08/2005M    2,96710/24/200310/24/2012Common Stock2,967$6.396,000D 
Stock Options (Right to buy)$7.0506/08/200506/08/2005M    2,13410/04/200310/04/2012Common Stock2,134$7.054,266D 
Stock Options (Right to buy)$7.0506/08/200506/08/2005M    2,13310/04/200310/04/2012Common Stock2,133$7.052,133D 
SEC 1474 (9-02)
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.

Explanation of Responses:

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations.
See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient,
see Instruction 6 for procedure.
s/ Paul J Winsauer06/09/2005
  **Signature of Reporting Person      Date