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SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D. C. 20549
SCHEDULE 13G
UNDER THE SECURITIES EXCHANGE ACT OF 1934
(AMENDMENT NO. 4)
A.M. CASTLE & CO.
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(NAME OF ISSUER)
COMMON STOCK
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(TITLE OF CLASS OF SECURITIES)
148411101
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(CUSIP NUMBER)
12/31/99
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(DATE)
CHECK THE FOLLOWING BOX IF FEE IS BEING PAID WITH THIS STATEMENT
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CUSIP NO. 148411101
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1) Names of Reporting Persons I.R.S. No. 31-0738296
S.S. or I.R.S. Identification Nos. of BANK ONE CORPORATION
Above Persons
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2) Check the Appropriate Box if a
Member of a Group (a)
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(See Instructions) (b)
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3) SEC Use only
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4) Citizenship or Place of
Organization ILLINOIS
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Number of Shares (5) Sole Voting Power 2,298,244
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Beneficially (6) Shared Voting Power 0
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Owned by (7) Sole Dispositive Power 2,298,244
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Each Reporting (8) Shared Dispositive Power 0
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Person with
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9) Aggregate Amount Beneficially 2,298,244
Owned by Each Reporting Person --------------
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10) Check if the Aggregate Amount
in Row (9) Excludes Certain
Shares (See Instructions)
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11) Percent of Class Represented
by Amount in Row 9 16.1%
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12) Type of Reporting Person
(See Instructions) HC
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SEC 13G
SECURITIES AND EXCHANGE COMMISSION
SCHEDULE 13G Amendment No. 4
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Item 1(a) Name of Issuer: A.M. CASTLE & CO.
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Item 1(b) Address of Issuer's principal executive
offices: 3400 North Wolf Road
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Franklin Park, IL 60131
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Item 2(a) Name of person filing: BANK ONE CORPORATION
Item 2(b) Address of principal business office or, One First National Plaza
if none residence: Chicago, IL 60670
Item 2(c) Citizenship: Not Applicable
Item 2(d) Title of class of securities: Common Stock
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Item 2(e) CUSIP No.: 148411101
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Item 3. This statement is filed pursuant to Rule 13d-1(c).
Item 4. Ownership
This beneficial ownership by BANK ONE CORPORATION with respect to
common shares of A.M. CASTLE & CO.
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________________________________________________________________:
(a) Amount beneficially owned: 2,298,244
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(b) Percent of class 16.1%
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(c) Number of shares as to which such person has:
(I) Sole power to vote or to direct the vote: 2,298,244
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(ii) Shared power to vote or to direct the vote: 0
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(iii) Sole power to dispose or to direct the
disposition of: 2,298,244
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(iv) Shared power to dispose or to direct the
disposition of: 0
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Item 5. Ownership of 5 percent or less of a Class. N/A
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Item 6. Ownership of More than 5 percent on Behalf of Another Person. N/A
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Item 7. Identification and Classification of the Subsidiary Which Acquired the Security
Being Reported on By the Parent Holding Company.
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Bank One Trust Company, N.A.
The One Group
Item 8. Identification and Classification of Members of the Group. N/A
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Item 9. Notice of Dissolution of Group. N/A
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Item 10. Certification.
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After reasonable inquiry and to the best of my knowledge and belief, I certify
that the information set forth in this statement is true, complete, and correct.
Dated: February 9, 2000
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BANK ONE CORPORATION
By: /s/ DAVID J. KUNDERT
David J. Kundert
EXECUTIVE VICE PRESIDENT
