SEC Info - American Century Investment Management Inc - ‘SC 13G/A’ on 2/13/14 re: Kaydon Corp

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American Century Investment Management Inc – ‘SC 13G/A’ on 2/13/14 re: Kaydon Corp

On: Thursday, 2/13/14, at 3:26pm ET · Accession #: 52388-14-63 · File #: 5-36006

  As Of                Filer                Filing    For·On·As Docs:Size              Issuer

 2/13/14  American Century Inv Mgmt Inc     SC 13G/A               1:139K Kaydon Corp

Amendment to Statement of Beneficial Ownership — Schedule 13G
Filing Table of Contents

Document/Exhibit                   Description                      Pages   Size 

 1: SC 13G/A    Amendment to Statement of Beneficial Ownership      HTML     71K

This is an HTML Document rendered as filed. [ Alternative Formats ]

United States Securities and Exchange Commission Washington, D.C. 20549


SCHEDULE 13G

Under the Securities Exchange Act of 1934

(Amendment No. 2)*



KAYDON CORPORATION
(Name of Issuer)


COMMON STOCK
(Title of Class of Securities)


486587108
(CUSIP Number)


DECEMBER 31, 2013
(Date of Event Which Requires Filing of this Statement)



Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

[ X ]	Rule 13d-1(b)
[ ]	Rule 13d-1(c)
[ ]	Rule 13d-1(d)


*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 the disclosures provided in a prior cover page.

The information required in 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).
Page 1 of 8 Pages

CUSIP No. 486587108

1.	Names of Reporting Persons Stowers Institute for Medical Research
2.	Check the Appropriate Box if a Member of a Group (See Instructions)

	(a)	[ ]

	(b)	[ ]

3.	SEC Use Only
4.	Citizenship or Place of Organization Delaware
			5.	Sole Voting Power	0

Number of Shares Beneficially			6.	Shared Voting Power	N/A
Owned by
Each Reporting			7.	Sole Dispositive Power	0
Person With:
			8.	Shared Dispositive Power	N/A

9.	Aggregate Amount Beneficially Owned by Each Reporting Person				0

10.	Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [ ]

11.	Percent of Class Represented by Amount in Row (9)				0.0%

12.	Type of Reporting Person (See Instructions)				HC
	Page 2 of 8 pages

CUSIP No. 486587108

1.	Names of Reporting Persons American Century Companies, Inc.
2.	Check the Appropriate Box if a Member of a Group (See Instructions)

	(a)	[ ]

	(b)	[ ]

3.	SEC Use Only
4.	Citizenship or Place of Organization Delaware
			5.	Sole Voting Power	0

Number of Shares Beneficially			6.	Shared Voting Power	N/A
Owned by
Each Reporting			7.	Sole Dispositive Power	0
Person With:
			8.	Shared Dispositive Power	N/A

9.	Aggregate Amount Beneficially Owned by Each Reporting Person				0

10.	Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [ ]

11.	Percent of Class Represented by Amount in Row (9)				0.0%

12.	Type of Reporting Person (See Instructions)				HC
	Page 3 of 8 pages

CUSIP No. 486587108

1.	Names of Reporting Persons American Century Investment Management, Inc.
2.	Check the Appropriate Box if a Member of a Group (See Instructions)

	(a)	[ ]

	(b)	[ ]

3.	SEC Use Only
4.	Citizenship or Place of Organization Delaware
			5.	Sole Voting Power	0

Number of Shares Beneficially			6.	Shared Voting Power	N/A
Owned by
Each Reporting			7.	Sole Dispositive Power	0
Person With:
			8.	Shared Dispositive Power	N/A

9.	Aggregate Amount Beneficially Owned by Each Reporting Person				0

10.	Check if the Aggregate Amount in Row (9) Excludes Certain Shares (See Instructions) [ ]

11.	Percent of Class Represented by Amount in Row (9)				0.0%

12.	Type of Reporting Person (See Instructions)				IA
	Page 4 of 8 pages

Item 1.

(a)	Name of Issuer.
	Kaydon Corporation
(b)	Address of Issuer’s Principal Executive Offices
	2723 South State Street, Suite 300 Ann Arbor, Michigan 48104
Item 2.

(a)	Name of Person Filing.

	(1)	Stowers Institute for Medical Research
	(2)	American Century Companies, Inc.
	(3)	American Century Investment Management, Inc.


(b)	Address of Principal Business Office or, if none, Residence.

	4500 Main Street 9th Floor Kansas City, Missouri 64111


(c)	Citizenship.

	(1)	Delaware
	(2)	Delaware
	(3)	Delaware


(d)	Title of Class of Securities.

	Reference is made to the cover page of this filing.


(e)	CUSIP Number.

	Reference is made to the cover page of this filing.
Page 5 of 8 pages

Item 3.	If this statement is filed pursuant to §§240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:

	(1)	Stowers Institute for Medical Research, is a parent holding company or control person in accordance with §240.13d-1(b)(1)(ii)(G).

	(2)	American Century Companies, Inc. is a parent holding company or control person in accordance with §240.13d-1(b)(1)(ii)(G).

	(3)	American Century Investment Management, Inc. is an investment adviser in accordance with §240.13d-1(b)(1)(ii)(E).


Item 4.	Ownership.

	Reference is made to Items 5-9 and 11 on the cover page of this filing.


Item 5.	Ownership of Five Percent or Less of a Class.

	If this statement is being filed to report the fact that as of the date hereof the reporting person has ceased to be the beneficial owner of more than five percent of the class of securities, check the following [ X ].


Item 6.	Ownership of More than Five Percent on Behalf of Another Person.

	Various persons, including the investment companies and separate institutional investor accounts that American Century Investment Management, Inc. (“ACIM”) serves as investment adviser, have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, the securities that are the subject of this schedule. Except as may be otherwise indicated if this is a joint filing, not more than 5% of the class of securities that is the subject of this schedule is owned by any one client advised by ACIM.


Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on By the Parent Holding Company

	See attached Exhibit A.


Item 8.	Identification and Classification of Members of the Group.

	Not applicable.


Item 9.	Notice of Dissolution of Group.

	Not applicable.

Page 6 of 8 pages

Item 10.

Certification

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect.

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 this 11th day of February, 2014.

	AMERICAN CENTURY COMPANIES, INC. (“ACC”)

	AMERICAN CENTURY INVESTMENT MANAGEMENT, INC. (“ACIM”)


	By:	/s/ *Charles A. Etherington*
		Charles A. Etherington
		Senior Vice President, ACIM
		Vice President, ACC

	STOWERS INSTITUTE FOR MEDICAL RESEARCH


	By:	/s/ *Richard W. Brown*
		Richard W. Brown
		Chairman

SCHEDULE 13G – To be included in statements filed pursuant to Rule 13d-1(b) or 13d-2(b).

EXHIBIT A

This Exhibit has been prepared to identify each subsidiary of American Century Companies, Inc. (“ACC”), which is controlled by the Stowers Institute for Medical Research, that is a beneficial owner of securities that are the subject of this schedule (the “Subject Securities”). American Century Investment Management, Inc. (“ACIM”) is a wholly-owned subsidiary of ACC and an investment adviser registered under §203 of the Investment Advisers Act of 1940.

Page 7 of 8 pages

SCHEDULE 13G – To be included in statements filed pursuant to Rule 13d-1(b) or 13d-2(b) and Rule 13d-1(f) (1) Agreement.

EXHIBIT B

Each of the undersigned hereby agrees and consents to the execution and joint filing on its behalf by American Century Investment Management, Inc. of this Schedule 13G respecting the beneficial ownership of the securities which are the subject of this schedule.

Dated this 11th day of February, 2014.

	AMERICAN CENTURY COMPANIES, INC. (“ACC”)

	AMERICAN CENTURY INVESTMENT MANAGEMENT, INC. (“ACIM”)


	By:	/s/ *Charles A. Etherington*
		Charles A. Etherington
		Senior Vice President, ACIM
		Vice President, ACC

	STOWERS INSTITUTE FOR MEDICAL RESEARCH


	By:	/s/ *Richard W. Brown*
		Richard W. Brown
		Chairman

Page 8 of 8 pages

Dates Referenced Herein and Documents Incorporated by Reference

This ‘SC 13G/A’ Filing	Date	Other Filings

Filed on:	2/13/14	SC 13G, SC 13G/A
	12/31/13	13F-NT
		List all Filings

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Filing Submission 0000052388-14-000063 – Alternative Formats (Word / Rich Text, HTML, Plain Text, et al.)

American Century Investment Management Inc – ‘SC 13G/A’ on 2/13/14 re: Kaydon Corp

On: Thursday, 2/13/14, at 3:26pm ET · Accession #: 52388-14-63 · File #: 5-36006

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Amendment to Statement of Beneficial Ownership — Schedule 13GFiling Table of Contents

This is an HTML Document rendered as filed. [ Alternative Formats ]

Dates Referenced Herein and Documents Incorporated by Reference

Amendment to Statement of Beneficial Ownership — Schedule 13G
Filing Table of Contents