SC 13D/A

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 13D

Under the Securities Exchange Act of 1934
(Amendment No. 6)*

The Timken Company

(Name of Issuer)

Common Stock, $0.00 par value

(Title of Class of Securities)

887389104

(CUSIP Number)

Ralph V. Whitworth

Relational Investors, LLC

12400 High Bluff Drive, Suite 600

San Diego, CA 92130

(858) 704-3333

(Name, Address and Telephone Number of Person
Authorized to Receive Notices and Communications)

December 16, 2013

(Date of Event Which Requires Filing of this Statement)

If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of §§240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box. o

Note: Schedules filed in paper format shall include a signed original and five copies of the schedule, including all exhibits. See §240.13d-7 for other parties to whom copies are to be sent.

* The remainder of this cover page shall be filled out for a reporting person’s initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter disclosures provided in a prior cover page.

The information required on the remainder of this cover page shall not be deemed to be “filed” for the purpose of Section 18 of the Securities Exchange Act of 1934 (“Act”) or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).

CUSIP No.
	1.	Names of Reporting Persons. I.R.S. Identification Nos. of Above Persons (Entities Only) Relational Investors, LLC
	2.	Check the Appropriate Box if a Member of a Group (See Instructions)
		(a)			x
		(b)			o
	3.	SEC Use Only
	4.	Source of Funds (See Instructions) OO
	5.	Check if Disclosure of Legal Proceedings Is Required Pursuant to Items 2(d) or 2(e)  o
	6.	Citizenship or Place of Organization Delaware
Number of Shares Beneficially Owned by Each Reporting Person With			7.	Sole Voting Power 8,256,535
			8.	Shared Voting Power -0-
			9.	Sole Dispositive Power 8,256,535
			10.	Shared Dispositive Power -0-
	11.	Aggregate Amount Beneficially Owned by Each Reporting Person 8,256,535
	12.	Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See Instructions)o
	13.	Percent of Class Represented by Amount in Row (11) 8.46%
	14.	Type of Reporting Person (See Instructions) IA/HC/OO

2

	1.	Names of Reporting Persons. I.R.S. Identification Nos. of Above Persons (Entities Only) Relational Investors Mid-Cap Fund I, L.P.
	2.	Check the Appropriate Box if a Member of a Group (See Instructions)
		(a)			x
		(b)			o
	3.	SEC Use Only
	4.	Source of Funds (See Instructions) WC
	5.	Check if Disclosure of Legal Proceedings Is Required Pursuant to Items 2(d) or 2(e)  o
	6.	Citizenship or Place of Organization Delaware
Number of Shares Beneficially Owned by Each Reporting Person With			7.	Sole Voting Power 3,338,672
			8.	Shared Voting Power -0-
			9.	Sole Dispositive Power 3,338,672
			10.	Shared Dispositive Power -0-
	11.	Aggregate Amount Beneficially Owned by Each Reporting Person 3,338,672
	12.	Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See Instructions)o
	13.	Percent of Class Represented by Amount in Row (11) 3.42%
	14.	Type of Reporting Person (See Instructions) PN

3

	1.	Names of Reporting Persons. I.R.S. Identification Nos. of Above Persons (Entities Only) Relational Investors Mid-Cap Fund II, L.P.
	2.	Check the Appropriate Box if a Member of a Group (See Instructions)
		(a)			x
		(b)			o
	3.	SEC Use Only
	4.	Source of Funds (See Instructions) WC
	5.	Check if Disclosure of Legal Proceedings Is Required Pursuant to Items 2(d) or 2(e)  o
	6.	Citizenship or Place of Organization Delaware
Number of Shares Beneficially Owned by Each Reporting Person With			7.	Sole Voting Power 2,113,337
			8.	Shared Voting Power -0-
			9.	Sole Dispositive Power 2,113,337
			10.	Shared Dispositive Power -0-
	11.	Aggregate Amount Beneficially Owned by Each Reporting Person 2,113,337
	12.	Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See Instructions)o
	13.	Percent of Class Represented by Amount in Row (11) 2.16%
	14.	Type of Reporting Person (See Instructions) PN

4

	1.	Names of Reporting Persons. I.R.S. Identification Nos. of Above Persons (Entities Only) Relational Coast Partners, L.P.
	2.	Check the Appropriate Box if a Member of a Group (See Instructions)
		(a)			x
		(b)			o
	3.	SEC Use Only
	4.	Source of Funds (See Instructions) WC/OO
	5.	Check if Disclosure of Legal Proceedings Is Required Pursuant to Items 2(d) or 2(e)  o
	6.	Citizenship or Place of Organization Delaware
Number of Shares Beneficially Owned by Each Reporting Person With			7.	Sole Voting Power 113,884
			8.	Shared Voting Power -0-
			9.	Sole Dispositive Power 113,884
			10.	Shared Dispositive Power -0-
	11.	Aggregate Amount Beneficially Owned by Each Reporting Person 113,884
	12.	Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See Instructions)o
	13.	Percent of Class Represented by Amount in Row (11) 0.12%
	14.	Type of Reporting Person (See Instructions) PN

5

	1.	Names of Reporting Persons. I.R.S. Identification Nos. of Above Persons (Entities Only) Relational Fund Partners, L.P.
	2.	Check the Appropriate Box if a Member of a Group (See Instructions)
		(a)			x
		(b)			o
	3.	SEC Use Only
	4.	Source of Funds (See Instructions) WC/OO
	5.	Check if Disclosure of Legal Proceedings Is Required Pursuant to Items 2(d) or 2(e)  o
	6.	Citizenship or Place of Organization Delaware
Number of Shares Beneficially Owned by Each Reporting Person With			7.	Sole Voting Power 11,768
			8.	Shared Voting Power -0-
			9.	Sole Dispositive Power 11,768
			10.	Shared Dispositive Power -0-
	11.	Aggregate Amount Beneficially Owned by Each Reporting Person 11,768
	12.	Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See Instructions)o
	13.	Percent of Class Represented by Amount in Row (11) 0.01%
	14.	Type of Reporting Person (See Instructions) PN

6

	1.	Names of Reporting Persons. I.R.S. Identification Nos. of Above Persons (Entities Only) RH Fund 1, L.P.
	2.	Check the Appropriate Box if a Member of a Group (See Instructions)
		(a)			x
		(b)			o
	3.	SEC Use Only
	4.	Source of Funds (See Instructions) WC/OO
	5.	Check if Disclosure of Legal Proceedings Is Required Pursuant to Items 2(d) or 2(e)  o
	6.	Citizenship or Place of Organization Delaware
Number of Shares Beneficially Owned by Each Reporting Person With			7.	Sole Voting Power 50,716
			8.	Shared Voting Power -0-
			9.	Sole Dispositive Power 50,716
			10.	Shared Dispositive Power -0-
	11.	Aggregate Amount Beneficially Owned by Each Reporting Person 50,716
	12.	Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See Instructions)o
	13.	Percent of Class Represented by Amount in Row (11) 0.05%
	14.	Type of Reporting Person (See Instructions) PN

7

	1.	Names of Reporting Persons. I.R.S. Identification Nos. of Above Persons (Entities Only) Relational Investors IX, L.P.
	2.	Check the Appropriate Box if a Member of a Group (See Instructions)
		(a)			x
		(b)			o
	3.	SEC Use Only
	4.	Source of Funds (See Instructions) WC
	5.	Check if Disclosure of Legal Proceedings Is Required Pursuant to Items 2(d) or 2(e)  o
	6.	Citizenship or Place of Organization Delaware
Number of Shares Beneficially Owned by Each Reporting Person With			7.	Sole Voting Power 191,205
			8.	Shared Voting Power -0-
			9.	Sole Dispositive Power 191,205
			10.	Shared Dispositive Power -0-
	11.	Aggregate Amount Beneficially Owned by Each Reporting Person 191,205
	12.	Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See Instructions)o
	13.	Percent of Class Represented by Amount in Row (11) 0.20%
	14.	Type of Reporting Person (See Instructions) PN

8

	1.	Names of Reporting Persons. I.R.S. Identification Nos. of Above Persons (Entities Only) Relational Investors XV, L.P.
	2.	Check the Appropriate Box if a Member of a Group (See Instructions)
		(a)			x
		(b)			o
	3.	SEC Use Only
	4.	Source of Funds (See Instructions) WC
	5.	Check if Disclosure of Legal Proceedings Is Required Pursuant to Items 2(d) or 2(e)  o
	6.	Citizenship or Place of Organization Delaware
Number of Shares Beneficially Owned by Each Reporting Person With			7.	Sole Voting Power 113,928
			8.	Shared Voting Power -0-
			9.	Sole Dispositive Power 113,928
			10.	Shared Dispositive Power -0-
	11.	Aggregate Amount Beneficially Owned by Each Reporting Person 113,928
	12.	Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See Instructions)o
	13.	Percent of Class Represented by Amount in Row (11) 0.12%
	14.	Type of Reporting Person (See Instructions) PN

9

	1.	Names of Reporting Persons. I.R.S. Identification Nos. of Above Persons (Entities Only) Relational Investors XVI, L.P.
	2.	Check the Appropriate Box if a Member of a Group (See Instructions)
		(a)			x
		(b)			o
	3.	SEC Use Only
	4.	Source of Funds (See Instructions) WC
	5.	Check if Disclosure of Legal Proceedings Is Required Pursuant to Items 2(d) or 2(e)  o
	6.	Citizenship or Place of Organization Delaware
Number of Shares Beneficially Owned by Each Reporting Person With			7.	Sole Voting Power 33,522
			8.	Shared Voting Power -0-
			9.	Sole Dispositive Power 33,522
			10.	Shared Dispositive Power -0-
	11.	Aggregate Amount Beneficially Owned by Each Reporting Person 33,522
	12.	Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See Instructions)o
	13.	Percent of Class Represented by Amount in Row (11) 0.03%
	14.	Type of Reporting Person (See Instructions) PN

10

	1.	Names of Reporting Persons. I.R.S. Identification Nos. of Above Persons (Entities Only) Relational Investors XX, L.P.
	2.	Check the Appropriate Box if a Member of a Group (See Instructions)
		(a)			x
		(b)			o
	3.	SEC Use Only
	4.	Source of Funds (See Instructions) WC/OO
	5.	Check if Disclosure of Legal Proceedings Is Required Pursuant to Items 2(d) or 2(e)  o
	6.	Citizenship or Place of Organization Delaware
Number of Shares Beneficially Owned by Each Reporting Person With			7.	Sole Voting Power 100,652
			8.	Shared Voting Power -0-
			9.	Sole Dispositive Power 100,652
			10.	Shared Dispositive Power -0-
	11.	Aggregate Amount Beneficially Owned by Each Reporting Person 100,652
	12.	Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See Instructions)o
	13.	Percent of Class Represented by Amount in Row (11) 0.10%
	14.	Type of Reporting Person (See Instructions) PN

11

	1.	Names of Reporting Persons. I.R.S. Identification Nos. of Above Persons (Entities Only) Relational Investors XXIII, L.P.
	2.	Check the Appropriate Box if a Member of a Group (See Instructions)
		(a)			x
		(b)			o
	3.	SEC Use Only
	4.	Source of Funds (See Instructions) WC/OO
	5.	Check if Disclosure of Legal Proceedings Is Required Pursuant to Items 2(d) or 2(e)  o
	6.	Citizenship or Place of Organization Delaware
Number of Shares Beneficially Owned by Each Reporting Person With			7.	Sole Voting Power 142,806
			8.	Shared Voting Power -0-
			9.	Sole Dispositive Power 142,806
			10.	Shared Dispositive Power -0-
	11.	Aggregate Amount Beneficially Owned by Each Reporting Person 142,806
	12.	Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See Instructions)o
	13.	Percent of Class Represented by Amount in Row (11) 0.15%
	14.	Type of Reporting Person (See Instructions) PN

12

	1.	Names of Reporting Persons. I.R.S. Identification Nos. of Above Persons (Entities Only) Relational Investors XXIV, L.P.
	2.	Check the Appropriate Box if a Member of a Group (See Instructions)
		(a)			x
		(b)			o
	3.	SEC Use Only
	4.	Source of Funds (See Instructions) WC
	5.	Check if Disclosure of Legal Proceedings Is Required Pursuant to Items 2(d) or 2(e)  o
	6.	Citizenship or Place of Organization Delaware
Number of Shares Beneficially Owned by Each Reporting Person With			7.	Sole Voting Power 17,080
			8.	Shared Voting Power -0-
			9.	Sole Dispositive Power 17,080
			10.	Shared Dispositive Power -0-
	11.	Aggregate Amount Beneficially Owned by Each Reporting Person 17,080
	12.	Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See Instructions)o
	13.	Percent of Class Represented by Amount in Row (11) 0.02%
	14.	Type of Reporting Person (See Instructions) PN

13

	1.	Names of Reporting Persons. I.R.S. Identification Nos. of Above Persons (Entities Only) Relational Co-Investment Fund I, L.P.
	2.	Check the Appropriate Box if a Member of a Group (See Instructions)
		(a)			x
		(b)			o
	3.	SEC Use Only
	4.	Source of Funds (See Instructions) WC
	5.	Check if Disclosure of Legal Proceedings Is Required Pursuant to Items 2(d) or 2(e)  o
	6.	Citizenship or Place of Organization Delaware
Number of Shares Beneficially Owned by Each Reporting Person With			7.	Sole Voting Power 888,415
			8.	Shared Voting Power -0-
			9.	Sole Dispositive Power 888,415
			10.	Shared Dispositive Power -0-
	11.	Aggregate Amount Beneficially Owned by Each Reporting Person 888,415
	12.	Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See Instructions)o
	13.	Percent of Class Represented by Amount in Row (11) 0.91%
	14.	Type of Reporting Person (See Instructions) PN

14

	1.	Names of Reporting Persons. I.R.S. Identification Nos. of Above Persons (Entities Only) Ralph V. Whitworth
	2.	Check the Appropriate Box if a Member of a Group (See Instructions)
		(a)			x
		(b)			o
	3.	SEC Use Only
	4.	Source of Funds (See Instructions) NA
	5.	Check if Disclosure of Legal Proceedings Is Required Pursuant to Items 2(d) or 2(e)  o
	6.	Citizenship or Place of Organization United States
Number of Shares Beneficially Owned by Each Reporting Person With			7.	Sole Voting Power -0-
			8.	Shared Voting Power 8,256,535
			9.	Sole Dispositive Power -0-
			10.	Shared Dispositive Power 8,256,535
	11.	Aggregate Amount Beneficially Owned by Each Reporting Person 8,256,535
	12.	Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See Instructions)o
	13.	Percent of Class Represented by Amount in Row (11) 8.46%
	14.	Type of Reporting Person (See Instructions) IN

15

	1.	Names of Reporting Persons. I.R.S. Identification Nos. of Above Persons (Entities Only) David H. Batchelder
	2.	Check the Appropriate Box if a Member of a Group (See Instructions)
		(a)			x
		(b)			o
	3.	SEC Use Only
	4.	Source of Funds (See Instructions) NA
	5.	Check if Disclosure of Legal Proceedings Is Required Pursuant to Items 2(d) or 2(e)  o
	6.	Citizenship or Place of Organization United States
Number of Shares Beneficially Owned by Each Reporting Person With			7.	Sole Voting Power -0-
			8.	Shared Voting Power 8,256,535
			9.	Sole Dispositive Power -0-
			10.	Shared Dispositive Power 8,256,535
	11.	Aggregate Amount Beneficially Owned by Each Reporting Person 8,256,535
	12.	Check if the Aggregate Amount in Row (11) Excludes Certain Shares (See Instructions)o
	13.	Percent of Class Represented by Amount in Row (11) 8.46%
	14.	Type of Reporting Person (See Instructions) IN

16

Item 1. Security and Issuer

This Schedule 13D/A constitutes the sixth amendment to the Schedule 13D originally filed by the Reporting Persons with the Securities and Exchange Commission (the “SEC”) on November 28, 2012 and amended by Amendment No.1, No. 2, No. 3, No. 4 and No. 5 filed by the Reporting Persons with the SEC on January 18, 2013, February 19, 2013, February 27, 2013, July 3, 2013 and August 5, 2013 (the “Statement”) with respect to the common stock, $0.00 par value (the “Shares”), of The Timken Company (the “Issuer” or the “Company”). Except as specifically amended by this Schedule 13D/A, the Statement remains in full force and effect.

Item 2. Identity and Background

This Statement is being filed by Relational Investors Mid-Cap Fund I, L.P. (“MC I”), Relational Investors Mid-Cap Fund II, L.P. (“MC II”), Relational Coast Partners, L.P. (“RCP”), Relational Fund Partners, L.P. (“RFP”), RH Fund 1, L.P. (“RH 1”), Relational Investors IX, L.P. (“RI IX”), Relational Investors XV, L.P. (“RI XV”), Relational Investors XVI, L.P. (“RI XVI”), Relational Investors XX, L.P. (“RI XX”), Relational Investors XXIII, L.P. (“RI XXIII”), Relational Investors XXIV, L.P. (“RI XXIV”) and Relational Co-Investment Fund I, L.P. (“RCF I”) collectively, the “Relational LPs.”  Each of the Relational LPs is a Delaware limited partnership.  The principal business of each is securities investment.

This Statement is also being filed by Relational Investors, LLC (“RILLC”), a Delaware limited liability company. The principal business of RILLC is being the sole general partner or sole managing member of the general partner of certain investment partnerships, including the Relational LPs and the investment adviser of certain client managed accounts, the “Managed Accounts”. The Relational LPs and the Managed Accounts are the beneficial owners of the securities covered by this Statement. Pursuant to the Limited Partnership Agreement of each of the Relational LPs, and the investment management agreement of the Managed Accounts, RILLC has sole investment discretion and voting authority with respect to the securities covered by this Statement.

This Statement is also being filed by Ralph V. Whitworth and David H. Batchelder.  Messrs. Whitworth and Batchelder are the Principals of RILLC, in which capacity they share voting control and dispositive power over certain securities covered by this Statement.  As such, Messrs. Whitworth and Batchelder may be deemed to have indirect beneficial ownership of such securities, but, each of Mr. Whitworth and Mr. Batchelder disclaim beneficial ownership of the Shares except to the extent of his pecuniary interest therein.  The present principal occupation of each of Messrs. Whitworth and Batchelder is serving as Principals of RILLC (Messrs. Whitworth and Batchelder, together with Relational LPs and RILLC, hereinafter, the “Reporting Persons”).

During the last five years, none of the Reporting Persons has been (i) convicted in a criminal proceeding (excluding traffic violations and similar misdemeanors) or (ii) a party to a civil proceeding of a judicial or administrative body of competent jurisdiction, and as a result of such proceeding, was or is subject to a judgment, decree or final order enjoining future violations of, or prohibiting or mandating activities subject to, federal or state securities laws or finding any violation with respect to such laws.

The business address of each of the Relational Entities is 12400 High Bluff Drive, Suite 600, San Diego, CA 92130.

Messrs. Whitworth and Batchelder are citizens of the United States.

17

Item 3. Source and Amount of Funds or Other Consideration

The Reporting Persons purchased an aggregate of 8,256,535 Shares for total consideration (including brokerage commissions) of $391 million derived from their working capital.

18

Item 5.

Interest in Securities of the Issuer

(a)           As of the date of this Statement, the Reporting Persons beneficially own in the aggregate 8,256,535 Shares, constituting approximately 8.46% of the outstanding Shares.  The percentage of Shares owned is based upon 97,636,674 Shares reported to be outstanding on September 30, 2013, as set forth in the Company’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2013.  The Reporting Persons may be deemed to have direct beneficial ownership of the Shares as follows:

NAME	NUMBER OF SHARES	% OF OUTSTANDING SHARES	VOTING AND DISPOSITIVE POWER
RILLC	1,140,550	1.17%	Sole
MC I	3,338,672	3.42%	Sole
MC II	2,113,337	2.16%	Sole
RCP	113,884	0.12%	Sole
RFP	11,768	0.01%	Sole
RH 1	50,716	0.05%	Sole
RI IX	191,205	0.20%	Sole
RI XV	113,928	0.12%	Sole
RI XVI	33,522	0.03%	Sole
RI XX	100,652	0.10%	Sole
RI XXIII	142,806	0.15%	Sole
RI XXIV	17,080	0.02%	Sole
RCF I	888,415	0.91%	Sole

RILLC, individually and in its capacity as an investment adviser, may be deemed to possess direct beneficial ownership of the 1,140,550 Shares that are owned by it and the Managed Accounts. Additionally, RILLC, as the sole general partner, of each of Relational LPs may be deemed to beneficially own (as that term is defined in Rule 13d-3 under the Securities Exchange Act of 1934, as amended) the 7,115,985 Shares beneficially owned by the Relational LPs because the limited partnership agreements of the Relational LPs specify that RILLC has sole investment discretion and voting authority with respect to those Shares.

Each of Messrs. Whitworth and Batchelder, as Principals of RILLC, may be deemed to have indirect beneficial ownership of the Shares which RILLC may beneficially own.  Each of Messrs. Whitworth and Batchelder disclaims beneficial ownership of such Shares except to the extent of his pecuniary interest therein.

To the best of the knowledge of each of the Reporting Persons, other than as set forth above, none of the persons named in Item 2 is the beneficial owner of any Shares.

19

(b)           See item (a) above.

(c)           Information concerning open market transactions in the Shares by the Reporting Persons during the past 60 days not previously reported is set forth in Exhibit A filed with this Statement.

(d)           No other person is known to have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, the Shares covered by this Statement, except that dividends from, and proceeds from the sale of, the Shares held by accounts managed by RILLC may be delivered to such accounts.

(e)           Not applicable.

Item 6.Contracts, Arrangements, Understandings or Relationships with Respect to Securities of the Issuer

Effective as of the date of this filing, the Reporting Persons are no longer a part of a “group” within the meaning of Rule 13d-5(b)(1) under the Act that included the California State Teachers’ Retirement System (“CalSTRS”), a California Government Employee Benefit plan.

Except for the joint filing agreement between and among the Reporting Persons attached hereto as Exhibit B, and except for the investment discretion and voting authority described in Item 2 of this Statement and in the respective partnership agreements and investment management agreements of the Relational LPs and Managed Accounts which each contain provisions whereby RILLC may, after certain adjustments, receive a percentage of realized or unrealized profits, if any, derived from that partnership’s or managed account’s investments, to the best of the knowledge of the Reporting Persons, there are no contracts, arrangements, understandings or relationships (legal or otherwise) among the Reporting Persons or between the Reporting Persons and any other person with respect to any securities of the Issuer, including but not limited to transfer or voting of any of the securities, finder’s fees, joint ventures, loan or option arrangements, puts or calls, guarantees of profits, division of profits or loss, or the giving or withholding of proxies.

20

Item 7.	Material to be Filed as Exhibits
	The following Exhibits are filed herewith: Exhibit A – Information concerning transactions in the Shares affected by the Reporting Persons in the last 60 days not previously reported. Exhibit B – Joint Filing Agreement.

21

Signature

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: December 18, 2013

RELATIONAL INVESTORS MID-CAP FUND I, L.P.
RELATIONAL INVESTORS MID-CAP FUND II, L.P.

RELATIONAL COAST PARTNERS, L.P.

RELATIONAL FUND PARTNERS, L.P.

RH Fund 1, L.P.

RELATIONAL INVESTORS IX, L.P.

RELATIONAL INVESTORS XV, L.P.

RELATIONAL INVESTORS XVI, L.P.

RELATIONAL INVESTORS XX, L.P.

RELATIONAL INVESTORS XXIII, L.P.
RELATIONAL INVESTORS XXIV, L.P.
RELATIONAL CO-INVESTMENT FUND I, L.P.

By:	RELATIONAL INVESTORS, LLC
	as general partner to each,

	By:	/s/ Ralph V. Whitworth
		Ralph V. Whitworth, Principal
RELATIONAL INVESTORS, LLC
	By:	/s/ Ralph V. Whitworth
		Ralph V. Whitworth, Principal
/s/ Ralph V. Whitworth
Ralph V. Whitworth
/s/ David H. Batchelder
David H. Batchelder

22

EXHIBIT INDEX

Exhibit	Description
A.	Information concerning transactions in the Shares affected by Reporting Persons in the last 60 days not previously reported.
B.	Joint Filing Agreement.

23

EX-99.A

Exhibit A

Transactions by Reporting Persons in the last 60 days.

Beneficial Ownership	Purchase or Sale	Quantity	Transaction Date	Price per Share (including commission)		How Effected
Relational Coast Partners, L.P.	Purchase	57	12/10/2013	$	51.85	Open Market
Relational Coast Partners, L.P.	Purchase	21,717	12/10/2013	$	51.82	Open Market
Relational Coast Partners, L.P.	Purchase	2,474	12/10/2013	$	51.97	Open Market
Relational Fund Partners, L.P.	Purchase	6	12/10/2013	$	51.85	Open Market
Relational Fund Partners, L.P.	Purchase	2,460	12/10/2013	$	51.82	Open Market
Relational Fund Partners, L.P.	Purchase	279	12/10/2013	$	51.97	Open Market
Relational Investors IX, L.P.	Purchase	78	12/10/2013	$	51.85	Open Market
Relational Investors IX, L.P.	Purchase	29,389	12/10/2013	$	51.82	Open Market
Relational Investors IX, L.P.	Purchase	2,344	12/10/2013	$	51.97	Open Market
Relational Investors IX, L.P.	Purchase	1,005	12/10/2013	$	51.97	Open Market
Relational Investors LLC	Purchase	80	12/10/2013	$	51.85	Open Market
Relational Investors LLC	Purchase	30,070	12/10/2013	$	51.82	Open Market
Relational Investors LLC	Purchase	3,426	12/10/2013	$	51.97	Open Market
Relational Investors LLC	Purchase	343	12/10/2013	$	51.85	Open Market
Relational Investors LLC	Purchase	127,513	12/10/2013	$	51.82	Open Market
Relational Investors LLC	Purchase	14,535	12/10/2013	$	51.97	Open Market
Relational Investors LLC	Purchase	159	12/10/2013	$	51.85	Open Market
Relational Investors LLC	Purchase	59,814	12/10/2013	$	51.82	Open Market
Relational Investors LLC	Purchase	6,816	12/10/2013	$	51.97	Open Market
Relational Investors XV, L.P.	Purchase	60	12/10/2013	$	51.85	Open Market
Relational Investors XV, L.P.	Purchase	22,567	12/10/2013	$	51.82	Open Market
Relational Investors XV, L.P.	Purchase	2,571	12/10/2013	$	51.97	Open Market
Relational Investors XVI, L.P.	Purchase	33	12/10/2013	$	51.85	Open Market
Relational Investors XVI, L.P.	Purchase	12,736	12/10/2013	$	51.82	Open Market
Relational Investors XVI, L.P.	Purchase	1,451	12/10/2013	$	51.97	Open Market
Relational Investors XX, L.P.	Purchase	55	12/10/2013	$	51.85	Open Market
Relational Investors XX, L.P.	Purchase	20,808	12/10/2013	$	51.82	Open Market
Relational Investors XX, L.P.	Purchase	2,371	12/10/2013	$	51.97	Open Market

Relational Investors XXIII, L.P.	Purchase	78	12/10/2013	$	51.85	Open Market
Relational Investors XXIII, L.P.	Purchase	29,490	12/10/2013	$	51.82	Open Market
Relational Investors XXIII, L.P.	Purchase	3,360	12/10/2013	$	51.97	Open Market
RH Fund 1, L.P.	Purchase	51	12/10/2013	$	51.85	Open Market
RH Fund 1, L.P.	Purchase	19,235	12/10/2013	$	51.82	Open Market
RH Fund 1, L.P.	Purchase	2,192	12/10/2013	$	51.97	Open Market
Relational Coast Partners, L.P.	Purchase	2,889	12/11/2013	$	50.91	Open Market
Relational Coast Partners, L.P.	Purchase	2,768	12/11/2013	$	50.79	Open Market
Relational Fund Partners, L.P.	Purchase	327	12/11/2013	$	50.91	Open Market
Relational Fund Partners, L.P.	Purchase	313	12/11/2013	$	50.79	Open Market
Relational Investors IX, L.P.	Purchase	2,737	12/11/2013	$	50.91	Open Market
Relational Investors IX, L.P.	Purchase	1,173	12/11/2013	$	50.91	Open Market
Relational Investors IX, L.P.	Purchase	3,746	12/11/2013	$	50.79	Open Market
Relational Investors LLC	Purchase	4,001	12/11/2013	$	50.91	Open Market
Relational Investors LLC	Purchase	3,832	12/11/2013	$	50.79	Open Market
Relational Investors LLC	Purchase	16,968	12/11/2013	$	50.91	Open Market
Relational Investors LLC	Purchase	16,255	12/11/2013	$	50.79	Open Market
Relational Investors LLC	Purchase	7,958	12/11/2013	$	50.91	Open Market
Relational Investors LLC	Purchase	7,623	12/11/2013	$	50.79	Open Market
Relational Investors XV, L.P.	Purchase	3,002	12/11/2013	$	50.91	Open Market
Relational Investors XV, L.P.	Purchase	2,876	12/11/2013	$	50.79	Open Market
Relational Investors XVI, L.P.	Purchase	1,694	12/11/2013	$	50.91	Open Market
Relational Investors XVI, L.P.	Purchase	1,623	12/11/2013	$	50.79	Open Market
Relational Investors XX, L.P.	Purchase	2,768	12/11/2013	$	50.91	Open Market
Relational Investors XX, L.P.	Purchase	2,652	12/11/2013	$	50.79	Open Market
Relational Investors XXIII, L.P.	Purchase	3,924	12/11/2013	$	50.91	Open Market
Relational Investors XXIII, L.P.	Purchase	3,758	12/11/2013	$	50.79	Open Market
RH Fund 1, L.P.	Purchase	2,559	12/11/2013	$	50.91	Open Market
RH Fund 1, L.P.	Purchase	2,451	12/11/2013	$	50.79	Open Market
Relational Coast Partners, L.P.	Purchase	2,889	12/12/2013	$	50.63	Open Market
Relational Coast Partners, L.P.	Purchase	1,783	12/12/2013	$	50.92	Open Market
Relational Fund Partners, L.P.	Purchase	327	12/12/2013	$	50.63	Open Market
Relational Fund Partners, L.P.	Purchase	201	12/12/2013	$	50.92	Open Market
Relational Investors IX, L.P.	Purchase	3,910	12/12/2013	$	50.63	Open Market

Relational Investors IX, L.P.	Purchase	2,414	12/12/2013	$	50.92	Open Market
Relational Investors LLC	Purchase	4,001	12/12/2013	$	50.63	Open Market
Relational Investors LLC	Purchase	2,470	12/12/2013	$	50.92	Open Market
Relational Investors LLC	Purchase	16,966	12/12/2013	$	50.63	Open Market
Relational Investors LLC	Purchase	10,475	12/12/2013	$	50.92	Open Market
Relational Investors LLC	Purchase	7,958	12/12/2013	$	50.63	Open Market
Relational Investors LLC	Purchase	4,912	12/12/2013	$	50.92	Open Market
Relational Investors XV, L.P.	Purchase	3,003	12/12/2013	$	50.63	Open Market
Relational Investors XV, L.P.	Purchase	1,853	12/12/2013	$	50.92	Open Market
Relational Investors XVI, L.P.	Purchase	1,694	12/12/2013	$	50.63	Open Market
Relational Investors XVI, L.P.	Purchase	1,046	12/12/2013	$	50.92	Open Market
Relational Investors XX, L.P.	Purchase	2,769	12/12/2013	$	50.63	Open Market
Relational Investors XX, L.P.	Purchase	1,709	12/12/2013	$	50.92	Open Market
Relational Investors XXIII, L.P.	Purchase	3,924	12/12/2013	$	50.63	Open Market
Relational Investors XXIII, L.P.	Purchase	2,422	12/12/2013	$	50.92	Open Market
RH Fund 1, L.P.	Purchase	2,559	12/12/2013	$	50.63	Open Market
RH Fund 1, L.P.	Purchase	1,580	12/12/2013	$	50.92	Open Market
Relational Coast Partners, L.P.	Purchase	7,509	12/13/2013	$	51.40	Open Market
Relational Fund Partners, L.P.	Purchase	854	12/13/2013	$	51.40	Open Market
Relational Investors IX, L.P.	Purchase	10,160	12/13/2013	$	51.40	Open Market
Relational Investors LLC	Purchase	10,395	12/13/2013	$	51.40	Open Market
Relational Investors LLC	Purchase	44,054	12/13/2013	$	51.40	Open Market
Relational Investors LLC	Purchase	20,677	12/13/2013	$	51.40	Open Market
Relational Investors XV, L.P.	Purchase	7,803	12/13/2013	$	51.40	Open Market
Relational Investors XVI, L.P.	Purchase	4,404	12/13/2013	$	51.40	Open Market
Relational Investors XX, L.P.	Purchase	7,194	12/13/2013	$	51.40	Open Market
Relational Investors XXIII, L.P.	Purchase	10,195	12/13/2013	$	51.40	Open Market
RH Fund 1, L.P.	Purchase	6,650	12/13/2013	$	51.40	Open Market
Relational Coast Partners, L.P.	Purchase	1,256	12/16/2013	$	51.92	Open Market
Relational Fund Partners, L.P.	Purchase	145	12/16/2013	$	51.92	Open Market
Relational Investors IX, L.P.	Purchase	1,699	12/16/2013	$	51.92	Open Market
Relational Investors LLC	Purchase	1,739	12/16/2013	$	51.92	Open Market
Relational Investors LLC	Purchase	7,360	12/16/2013	$	51.92	Open Market
Relational Investors LLC	Purchase	3,458	12/16/2013	$	51.92	Open Market

Relational Investors XV, L.P.	Purchase	1,305	12/16/2013	$	51.92	Open Market
Relational Investors XVI, L.P.	Purchase	737	12/16/2013	$	51.92	Open Market
Relational Investors XX, L.P.	Purchase	1,203	12/16/2013	$	51.92	Open Market
Relational Investors XXIII, L.P.	Purchase	1,705	12/16/2013	$	51.92	Open Market
RH Fund 1, L.P.	Purchase	1,113	12/16/2013	$	51.92	Open Market

EX-99.B

Exhibit B

JOINT FILING AGREEMENT

In accordance with Rule 13d-l(k) under the Securities Exchange Act of 1934, as amended, the persons named below agree to the joint filing on behalf of each of them of a statement on Schedule 13D (including amendments thereto) with respect to the common stock, $0.00 par value, of The Timken Company and further agree that this Joint Filing Agreement be included as an Exhibit to such joint filing.  In evidence thereof, the undersigned hereby execute this Agreement this 18th day of December, 2013.

RELATIONAL INVESTORS MID-CAP FUND I, L.P.
RELATIONAL INVESTORS MID-CAP FUND II, L.P.

RELATIONAL COAST PARTNERS, L.P.

RELATIONAL FUND PARTNERS, L.P.

RH Fund 1, L.P.

RELATIONAL INVESTORS IX, L.P.

RELATIONAL INVESTORS XV, L.P.

RELATIONAL INVESTORS XVI, L.P.

RELATIONAL INVESTORS XX, L.P.

RELATIONAL INVESTORS XXIII, L.P.
RELATIONAL INVESTORS XXIV, L.P.

RELATIONAL CO-INVESTMENT FUND I, L.P.

By:	RELATIONAL INVESTORS, LLC
	as general partner to each,

	By:	/s/ Ralph V. Whitworth
		Ralph V. Whitworth, Principal
RELATIONAL INVESTORS, LLC
	By:	/s/ Ralph V. Whitworth
		Ralph V. Whitworth, Principal
/s/ Ralph V. Whitworth
Ralph V. Whitworth
/s/ David H. Batchelder
David H. Batchelder