SEC FORM 3

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^*

ONEX CORP

(Last)

(First)

(Middle)

161 BAY STREET

(Street)

TORONTO

M5J 2S1

(City)

(State)

(Zip)

2. Date of Event Requiring Statement (Month/Day/Year)
04/08/2011

3. Issuer Name and Ticker or Trading Symbol
TMS International Corp. [ TMS ]

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)

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)
1. Title of Derivative Security (Instr. 4)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	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)
Class B Common Stock	04/05/2011	⁽¹⁾	Class A Common Stock	19,390.274⁽⁴⁾⁽⁵⁾	⁽²⁾	D
Class A Preferred Stock	⁽³⁾	⁽¹⁾	Class B Common Stock	16,835,812⁽³⁾⁽⁴⁾⁽⁵⁾	$16⁽³⁾	D
Class B Common Stock	04/05/2011	⁽¹⁾	Class A Common Stock	11,404.4659⁽⁶⁾	⁽²⁾	D
Class A Preferred Stock	⁽³⁾	⁽¹⁾	Class B Common Stock	9,902,050⁽³⁾⁽⁶⁾	$16⁽³⁾	D
Class B Common Stock	04/05/2011	⁽¹⁾	Class A Common Stock	95.28⁽⁷⁾	⁽²⁾	D
Class A Preferred Stock	⁽³⁾	⁽¹⁾	Class B Common Stock	82,727⁽³⁾⁽⁷⁾	$16⁽³⁾	D
Class B Common Stock	04/05/2011	⁽¹⁾	Class A Common Stock	459.726⁽⁸⁾	⁽²⁾	D
Class A Preferred Stock	⁽³⁾	⁽¹⁾	Class B Common Stock	399,162⁽³⁾⁽⁸⁾	$16⁽³⁾	D
Class B Common Stock	04/05/2011	⁽¹⁾	Class A Common Stock	223.3841⁽⁹⁾	⁽²⁾	D
Class A Preferred Stock	⁽³⁾	⁽¹⁾	Class B Common Stock	193,955⁽³⁾⁽⁹⁾	$16⁽³⁾	D
Class B Common Stock	04/05/2011	⁽¹⁾	Class A Common Stock	2,621.8027⁽¹⁰⁾⁽¹¹⁾	⁽²⁾	D
Class A Preferred Stock	⁽³⁾	⁽¹⁾	Class B Common Stock	2,276,457⁽³⁾⁽¹⁰⁾⁽¹¹⁾	$16⁽³⁾	D
Class B Common Stock	04/05/2011	⁽¹⁾	Class A Common Stock	19,850	⁽²⁾	I	See Footnote⁽¹²⁾
Class A Preferred Stock	⁽³⁾	⁽¹⁾	Class B Common Stock	17,234,974⁽³⁾	$16⁽³⁾	I	See Footnote⁽¹²⁾

1. Name and Address of Reporting Person^*

ONEX CORP

(Last)

(First)

(Middle)

161 BAY STREET

(Street)

TORONTO

M5J 2S1

(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^*

SCHWARTZ GERALD W

(Last)

(First)

(Middle)

C/O ONEX CORPORATION

161 BAY STREET

(Street)

TORONTO

M5J 2S1

(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. The Class B Common Stock and the Class A Preferred Stock have no expiration date.

2. Shares of Class B Common Stock are convertible on a one-for-one basis at any time, at the option of the holder, into shares of Class A Common Stock and are automatically convertible on a one-for-one basis into shares of Class A Common Stock upon a sale or other disposition to any person other than (i) a person who obtained Class B Common Stock through a direct issuance by the Issuer or (ii) Onex Corporation, Onex Partners II LP or any controlled affiliate of Onex Corporation or Onex Partners II LP. The Class B Common Stock has no expiration date.

3. Each share of Class A Preferred Stock is convertible into a number of shares of Class B Common Stock determined by dividing the liquidation preference at the time of conversion by the conversion price. Assumes a conversion price for the Class A Preferred Stock of $16.00 (which is the mid-point of the price range set forth on the front cover page of the prospectus included in the registration statement on Form S-1 filed with the Securities and Exchange Commission on April 8, 2011) and a conversion date of April 19, 2011. Concurrently with the initial public offering of the Issuer's Class A Common Stock, each share of Class A Preferred Stock will convert into the number of shares of Class B Common Stock on the basis of a conversion price equal to the public offering price per share of Class A Common Stock in the offering. The Class A Preferred Stock is also convertible into Class B Common Stock at the holder's election. The Class A Preferred Stock has no expiration date.

4. All of the shares owned by Onex Corporation are reported as beneficially owned by each of Onex Corporation and Gerald Schwartz, notwithstanding the fact that Mr. Schwartz has a pecuniary interest in less than 100% of such shares. Mr. Schwartz disclaims beneficial ownership of these securities except to the extent of its or his pecuniary interest therein, and the inclusion of such shares in this report shall not be deemed an admission of beneficial ownership of all of the reported shares for purposes of Section 16 or for any other purpose.

5. Onex Corporation may be deemed to own beneficially the shares of Class B Common Stock and Class A Preferred Stock held directly by it and by (a) Onex Partners II LP, through Onex Corporation's ownership of all of the common stock of Onex Partners GP Inc., the general partner of Onex Partners II GP LP, the general partner of Onex Partners II LP, (b) Onex Partners II GP LP, through Onex Corporation's ownership of all of the common stock of Onex Partners GP Inc., the general partner of Onex Partners II GP LP, (c) Onex U.S. Principals LP, through Onex Corporation's ownership of all of the equity of Onex American Holdings II LLC, which owns all of the equity of Onex American Holdings GP LLC, the general partner of Onex U.S. Principals LP, and (d) Tube City EI II Ltd., through Onex Corporation's ownership oa fall of the common stock of Tube City EI II Ltd. Onex Corporation disclaims beneficial ownership of these securities except to the extent of its direct ownership.

6. Represents shares directly owned by Onex Partners II LP. All of the shares owned by Onex Partners II LP are reported as beneficially owned by each of Onex Partners II LP, Onex Corporation and Gerald Schwartz, notwithstanding the fact that each of Onex Corporation and Mr. Schwartz has a pecuniary interest in less than 100% of such shares. Each of Onex Corporation and Mr. Schwartz disclaims beneficial ownership of these securities except to the extent of its or his pecuniary interest therein, and the inclusion of such shares in this report shall not be deemed an admission of beneficial ownership of all of the reported shares for purposes of Section 16 or for any other purpose.

7. Represents shares directly owned by Onex Partners II GP LP. All of the shares owned by Onex Partners II GP LP are reported as beneficially owned by each of Onex Partners II GP LP, Onex Corporation and Gerald Schwartz, notwithstanding the fact that each of Onex Corporation and Mr. Schwartz has a pecuniary interest in less than 100% of such shares. Each of Onex Corporation and Mr. Schwartz disclaims beneficial ownership of these securities except to the extent of its or his pecuniary interest therein, and the inclusion of such shares in this report shall not be deemed an admission of beneficial ownership of all of the reported shares for purposes of Section 16 or for any other purpose.

8. Represents shares directly owned by 1597257 Ontario Inc. All of the shares owned by 1597257 Ontario Inc. are reported as beneficially owned by each of 1597257 Ontario Inc. and Gerald Schwartz, notwithstanding the fact that each Mr. Schwartz has a pecuniary interest in less than 100% of such shares. Mr. Schwartz disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein, and the inclusion of such shares in this report shall not be deemed an admission of beneficial ownership of all of the reported shares for purposes of Section 16 or for any other purpose.

9. Represents shares directly owned by Onex U.S. Principals LP. All of the shares owned by Onex U.S. Principals LP are reported as beneficially owned by each of Onex U.S. Principals LP, Onex Corporation and Gerald Schwartz, notwithstanding the fact that each of Onex Corporation and Mr. Schwartz has a pecuniary interest in less than 100% of such shares. Each of Onex Corporation and Mr. Schwartz disclaims beneficial ownership of these securities except to the extent of its or his pecuniary interest therein, and the inclusion of such shares in this report shall not be deemed an admission of beneficial ownership of all of the reported shares for purposes of Section 16 or for any other purpose.

10. Represents shares directly owned by Tube City EI II Ltd. All of the shares owned by Tube City EI II Ltd. are reported as beneficially owned by each of Tube City EI II Ltd., Onex Corporation and Gerald Schwartz, notwithstanding the fact that Mr. Schwartz has a pecuniary interest in less than 100% of such shares. Each of Onex Corporation and Mr. Schwartz disclaims beneficial ownership of these securities except to the extent of its or his pecuniary interest therein, and the inclusion of such shares in this report shall not be deemed an admission of beneficial ownership of all of the reported shares for purposes of Section 16 or for any other purpose.

11. The following people have options to purchase shares of the issuer held by Tube City EI II Ltd.: Gerald Schwartz, Ewout Heersink, Mark Hilson, Andrew Sheiner, Donald Lewtas, Nigel Wright, Chris Govan, Timothy Duncanson, Andrea Daly, Christine Donaldson, David J. Mansell, David R. Hirsch, Kosty Gilis, Andrew Lapham, Scott Mather, and Manish Srivastava.

12. Mr. Gerald W. Schwartz, the Chairman, President and Chief Executive Officer of Onex Corporation, owns shares representing a majority of the voting rights of the shares of Onex Corporation. The interests of Onex Corporation are described in footnotes 4 through 10. Mr. Schwartz disclaims beneficial ownership in these securities, and the inclusion of such shares in this report shall not be deemed an admission of beneficial ownership of all of the reported shares for purposes of Section 16 or for any other purpose.

Remarks:

**Additional Reporting Person Signatures** /s/ Donald Lewtas, attorney-in-fact for Gerald W. Schwartz. *Power of Attorney incorporated by reference to the Amendment to Form 4 to Dura Automotive Systems, Inc. filed with the Securities and Exchange Commission by Gerald W. Schwartz on September 10, 1996.*; /s/ Derek Stoldt for Onex Partners II LP, Onex Partners II GP LP and Onex US Principals LP, pursuant to powers of attorney being filed herewith; /s/ Andrea E. Daly for 1597257 Ontario Inc. and Tube City EI II Ltd., pursuant to powers of attorney being filed herewith.

	/s/ Andrea E. Daly for Onex Corporation, pursuant to a power of attorney being filed herewith	04/08/2011
	** Signature of Reporting Person	Date
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