Ownership Submission
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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(Print or Type Responses)
1. Name and Address of Reporting Person *
Sigler Mary Ann
   2. Issuer Name and Ticker or Trading Symbol
Ryerson Holding Corp [RYI] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
__X__ Director _____ 10% Owner
_____ Officer (give title below) _____ Other (specify below)
(Last)
(First)
(Middle)
C/O PLATINUM EQUITY, LLC, 360 NORTH CRESCENT DRIVE		 3. Date of Earliest Transaction (Month/Day/Year)
08/13/2014
(Street)

BEVERLY HILLS, CA 90210		 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
(City)
(State)
(Zip)
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)
Code V Amount (A) or (D) Price
Common Stock, par value $0.01 per share 08/13/2014   P   7,500 A $ 11 7,500 D (1)  

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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)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
Sigler Mary Ann
C/O PLATINUM EQUITY, LLC
360 NORTH CRESCENT DRIVE
BEVERLY HILLS, CA 90210		   X      

Signatures

 /s/ Mark S. Silver, attorney in fact   08/15/2014
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 4(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) See Exhibit 99.1
 
Remarks:
Ms. Mary Ann Sigler is associated with Platinum Equity, LLC and its affiliated investment funds.  Platinum Equity, LLC manages its affiliated investment funds, including Platinum Equity Capital Partners, L.P., Platinum Equity Capital Partners-PF, L.P., Platinum Equity Capital Partners-A, L.P., Platinum Equity Capital Partners II, L.P., Platinum Equity Capital Partners-PF II, L.P., Platinum Equity Capital Partners-A II, L.P. and Platinum Rhombus Principals, LLC, which collectively own 100% of the issued and outstanding shares of common stock of Ryerson Holding Corporation ("Ryerson Holding"), totaling 21,037,500 shares.  This report does not include any securities of Ryerson Holding that may be deemed beneficially owned by Platinum Equity, LLC or its affiliated investment funds, and Ms. Sigler disclaims beneficial ownership of all such securities.  This report shall not be deemed an admission that Ms. Sigler is the beneficial owner of, or has any pecuniary interest in, such securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

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