AMENDMENT NO. 2 TO STOCKHOLDERS AGREEMENT

Exhibit 4.9

AMENDMENT NO. 2 TO STOCKHOLDERS AGREEMENT

THIS AMENDMENT NO. 2 TO STOCKHOLDERS AGREEMENT is entered into effective this 19th day of September, 2007 (this “Amendment No. 2”), by and among Cardiovascular Systems, Inc., a Minnesota Corporation (the “Company”), the Series A-1 Convertible Preferred Stockholders listed on Exhibit A hereto (“Series A-1 Investors”), and the Holders and Investors signatory hereto.

RECITALS

WHEREAS, this Amendment No. 2 amends a Stockholders Agreement, dated July 19, 2006 (the “Stockholders Agreement”) by and between the Company and the “Holders”, “Investors”, and “Section 5 Holders” set forth on Schedule I thereto, as amended by that certain Amendment No. 1 to Stockholders Agreement, dated October 3, 2006 by and between the Company, ITX International Equity Corp. and the Holders and Investors signatory thereto;

WHEREAS, the Company has agreed to sell up to 2,941,177 shares of Series A-1 Convertible Preferred Stock to the Series A-1 Investors (the “Offering”) in accordance with the terms of that certain Private Placement Memorandum dated May 16, 2007, as supplemented on August 8, 2007 and those certain Subscription Agreements by and between the Company and the Series A-1 Investors received in connection with the Offering (the “Subscription Agreements”);

WHEREAS, on May 21, 2007, the Company’s Board of Directors approved the sale of up to 1,175,000 shares of Series A-1 Convertible Preferred Stock to the Series A-1 Investors and the transactions contemplated by the Subscription Agreements including this Amendment No. 2, and on August 7, 2007 the Board further authorized that the Offering be increased to not more than 2,941,177 shares of Series A-1 Convertible Preferred Stock;

WHEREAS, Holders executing this Amendment No. 2 hold a majority of the Shares subject to the Stockholders Agreement; and

WHEREAS, Investors executing this Amendment No. 2 hold a majority in interest of the shares of Common Stock issued or issuable to the Investors.

NOW THEREFORE, in consideration of the mutual covenants and agreements contained in this Amendment No. 2, the sufficiency of which is hereby acknowledged, the parties hereto agree as set forth below:

Defined Terms. Capitalized terms not defined herein shall have the meanings ascribed to them in the Stockholders Agreement.

	2.		The Series A-1 Convertible Preferred Stock sold in the Offering shall be deemed additional shares of Series A Convertible Preferred Stock for purposes of the Stockholders Agreement.

	3.		Schedule I is hereby amended to include each of the Series A-1 Investors as an Investor as set forth below and each of the Series A-1 Investors shall be deemed an Investor as that term is used in the Stockholders Agreement.


							No. of				No. of
				No. of Option/			Shares of		No. of		Shares of
	No. of Shares			Warrant			Series A		Series A		Series A-1
	of Common			Common			Preferred		Warrant		Preferred
Investor	Stock			Shares			Stock		Shares		Stock
Abrasive Technology, Inc. Profit Sharing Plan		—			—			—		—		32,000
Xxxxxxx Xxxxxx		50,000	(1)		3,200	(1)		8,943		1,270		3,552
Xxxx X. Xxxxx		6,250			—			—		—		6,000
Xxxxxx Xxxxx		—			—			—		—		5,000
Xxxxxxx Xxxxxxxx		—			—			—		—		12,000
Xxxxxxx X. Xxxxxxxxx		99,883			12,500			35,937		5,103		18,255
Xxxxxxx Xxxxxxxxxx, MD		—			—			—		—		5,882
Xxxxx Xxxxxx		—			—			—		—		28,000
Xxxxxxx X. Xxxxxx								44,474		6,315		11,928
Xxxxxxxxx X. Xxxx and Xxxxxxx X. Xxxx, JTWROS		—			—			—		—		6,000
RBC Xxxx Xxxxxxxx Cust FBO Xxxxxxxxx X. Xxxx XXX		—			—			—		—		9,500
Xxxxxxx Xxxxxx & Co. Cust FBO Xxxx X. Xxxxx XXX		—			—			—		—		5,882
Xxxxxx X. Xxxx and Xxxxx X. Xxxx, JTWROS		—			—			—		—		5,882
Xxxxx Xxxxx		—			—			—		—		5,882
Xxxxx X. Xxxxxxx		—			—			—		—		5,900
Pensco Trust Company Cust FBO Xxxxxxx X. Xxxxxx XXX		—			—			—		—		4,900
Xxxxxxx Bold		—			—			—		—		3,600
Xxxx X. Xxxxxxx		23,000			—			—		—		11,764
Xxxxxx Xxxxx		—			—			—		—		9,000
Xxxxx Xxxxxx and Xxxx Xxxxxx JTWROS		12,500	(2)		—			8,943		1,270		4,120
Xxxxx Xxxxx		40,000			—			10,260		1,457		17,000
Xxxxxx X. Xxxxxxx		—			—			—		—		2,942
Xxxxx X. Xxxxx, Xx.		—			—			—		—		7,500
Xxxxxx and Xxxxxxxx Xxxx, Ttees, Xxxxxx and Xxxxxxxx Xxxx Rev. Living Trust		6,000			—			—		—		5,882
Wedbush Xxxxxx Securities Cust FBO Xxxxxxx X. Xxx XXX		—			—			—		—		7,050
Xxxxxxx Xxxxx and Xxxxxx Xxxxx, Trustees, Xxxxx Family Trust		—			—			—		—		5,882
Xxxxxxxxxxx Xxxxxxxx		—			—			—		—		2,941
H. Xxxxxx Xxxxxx		—			—			—		—		5,882


						No. of				No. of
				No. of Option/		Shares of		No. of		Shares of
	No. of Shares			Warrant		Series A		Series A		Series A-1
	of Common			Common		Preferred		Warrant		Preferred
Investor	Stock			Shares		Stock		Shares		Stock
Xxxxxxx Xxxxxx & Co., Inc. Cust FBO Xxxxxxxx X. Xxxxxxxxxx XXX		—			—		—		—		5,800
Xxxxxx Xxxxxxx Xxxxxxxx		—			—		—		—		29,400
Xxxxxx X. Xxxxxxx Family Foundation		—			—		43,783		6,217		29,414
Xxxxxxx Xxxxxx & Co., Inc. Cust FBO Xxxxxx X. Xxxxxx XXX		—			—		—		—		5,882
CAVA Partners, LLC		—			—		—		—		5,882
Xxxx X. Xxxxxxxxx		—			—		—		—		3,000
Xxxxx X. Xxxx		—			—		—		—		5,882
Xxxxx Xxxxx		—			—		—		—		17,647
Xxxxxxx X. Xxxxxx and XxXxx Xxxxxx, JTWROS		—			—		—		—		2,942
Xxxxxx Xxxx Xxxxxxx		—			—		—		—		6,777
Xxxxxxx Xxxxxx & Co., Inc. Cust FBO Xxxxx X. Xxxxxx XXX		—			—		—		—		5,882
Pershing LLC Custodian FBO Xxxxxx Xxxxxxx Xxxxx XXX		19,000	(3)		—		—		—		5,882
Xxxxx X. Xxxxx, M.D.		—			—		—		—		5,884
Xxxx Xxxxxxx		—			—		—		—		11,765
Wachovia Securities Cust FBO Xxxx Xxxxxxx XXX		—			—		—		—		12,941
Xxx Xxxxxxx		—			—		—		—		5,882
Xxxxx X. Xxxxxxxx		—			—		—		—		11,750
Xxxxx X. Xxxx		—			—		—		—		590
Xxxxxx X. Xxxxx, MD		—			—		—		—		5,882
Xxxxx Xxxxxx		—			—		—		—		5,882
Xxxxx X. Xxxxxx, M.D.		—			—		—		—		2,941
Xxxxxxx Xxxxxx & Co., Inc. Cust FBO Xxxx X. XxXxxx XXX		—			—		—		—		6,000
Xxxxx X. Xxxxxxx		—			—		—		—		4,000
Xxxxx Xxxxx and Xxxxx Xxxxx JTWROS		—			—		—		—		2,942
Xxxx X. Xxxxx		—			—		—		—		5,883
Xxxx Xxx Xxxxxxxx, MD		—			—		—		—		6,000
Xxxxxxx Xxxxxxx		—			—		—		—		2,942
Xxxxx Xxxxx		—			—		—		—		5,882
Xxxxx X. Xxxxxx		—			—		17,890		2,540		2,404
Xxxxxxx X. Xxxxx, M.D.		—			—		—		—		2,941
Xxxxxxx Xxxxxxx		—			—		—		—		5,882
Xxxxxxxx X. Xxxxxx		—			—		—		—		5,882
Xxxxxx X. Xxxxxxx		—			—		—		—		5,882
GDN Holdings, LLC		49,167			2,000		131,349		18,652		41,913
Xxxxxxx X. Xxxxx, MD and Xxxxxxx X. Xxxxx JTWROS		—			—		—		—		2,950
Xxxxx Xxxx Xxxxxxx		23,000			—		—		—		19,059
UBS Financial Services, Inc. Cust FBO X. Xxxx Xxxxxx XXX		13,500	(3)		—		—		—		6,500


						No. of				No. of
				No. of Option/		Shares of		No. of		Shares of
	No. of Shares			Warrant		Series A		Series A		Series A-1
	of Common			Common		Preferred		Warrant		Preferred
Investor	Stock			Shares		Stock		Shares		Stock
Xxxxxx Xxxxxxx Xxxxxxxxx and Xxxxx Xxxxxxx Xxxxxxxxx		—			—		—		—		10,000
Xxxxx X. Xxxxxxxx		—			—		—		—		18,750
Xxxxx Xxxxxxxxx		—			—		—		—		7,060
Xxxxx X. Xxxxxxx		—			—		—		—		2,941
Xxx Xxxxxx		—			—		—		—		2,941
Fiserv ISS & Co. Cust FBO Xxx Xxxxxx XXX		—			—		—		—		5,882
Xxxxx Xxxxxx Xxxxxx		—			—		—		—		11,764
Xxxxx Xxxxx Xxxxxx		—			—		—		—		600
Xxxxxx X. Xxxxx		—			—		8,815		1,252		9,431
Syntel, LLC Profit Sharing Plan FBO Xxxxxx Xxxxx Xxxxxx, Xxxxxx Xxxxx Xxxxxx, Trustee		—			—		—		—		5,882
Xxxxxxx X. Xxxxxx and Xxxxxx X. Xxxxxx, Trustees, R&S Trust dated 8/3/99		14,000	(4)		—		—		—		5,882
Xxxxxxx Xxxxxx & Co., Inc. Cust FBO Xxxxx Xxxxxxx Xxxxxx XXX		—			—		—		—		13,000
Xxxxxx X. Xxxxxxx		—			—		—		—		17,647
Xxxxxxx Xxxxxxx and Xxxxx Xxxxx Xxxxxxx JTWROS		—			—		—		—		5,882
Xxxxxx Xxxxxxxx		—			—		—		—		2,942
Xxxxx X. Xxxx		6,500			—		—		—		8,000
Xxxxx X. Xxxxxx, Trustee, Xxxxxx Living Trust dtd 12/10/96		—			—		—		—		5,882
Innovasc, LLC		—			—		—		—		4,500
Xxxxxxx Xxxxxxx and Xxxxx Xxxxxxx, JTWROS		—			—		—		—		2,941
Xxxxxx X. Xxxxxx and Xxxxxx X. Xxxxxx JTWROS		—			—		17,657		2,407		7,108
ITX International Equity Corp.		—			—		350,263		49,737		47,079
Xxxx Xxxxxx		10,000			—		—		—		11,765
Xxxx Xxx		—			—		—		—		5,900
Takemito Jimbo		—			—		—		—		11,765
Xxxxxxx Xxxxx Xxxxx, MD		—			—		—		—		6,000
Xxxxx X. Xxxxxxx and Xxxx X. Xxxxx JTWROS		—			—		—		—		3,529
Xxxxx X. Xxxxxx		—			—		—		—		5,882
Salva Xxxxxx and Xxxx Xxxxxx JTWROS		—			—		—		—		3,529
KD Holding, Inc.		—			—		—		—		6,000
Xxxxxx X. Xxxxxx and Xxxxxx Xxxxxx JTWROS		—			—		—		—		17,647
Xxxxx Xxxxxx		—			—		—		—		2,941
Xxxxxx Xxxxxxxx, Ttee, Xxxxxx Xxxxxxxx and Xxxxx Xxxxxxx Xxxxxxxx Trust U/A		—			—		—		—		5,882
Xxxxxxx X. Xxxxx		—			—		—		—		10,000


						No. of				No. of
				No. of Option/		Shares of		No. of		Shares of
	No. of Shares			Warrant		Series A		Series A		Series A-1
	of Common			Common		Preferred		Warrant		Preferred
Investor	Stock			Shares		Stock		Shares		Stock
E*Trade as Cust FBO Xxxxxx X. Xxxxxx XXX		—			—		—		—		5,883
Xx Xxxxx and Xxxxxx Xxxxx JTWROS		—			—		—		—		8,825
Xx Xxxxx		—			—		—		—		2,942
Xxxxx Xxxxx, M.D.		—			—		—		—		3,000
Xxxxx Xxxxx		7,400			—		—		—		22,600
Xxxx X. Xxxxxx		—			—		—		—		5,882
Habib Xxxx Xxxxxxx		—			—		—		—		6,000
Xxxxx Xxxxxxxx		—			—		—		—		2,942
Xxxxx Xxx		—			—		—		—		17,000
MLPF&S Cust FBO Xxxxx Xxx XXX		—			—		—		—		23,529
Xxxxxx Xxxxxxxxx and Xxxxxx Xxxxxxxxx		—			—		—		—		11,764
Xxxxxxx Xxxxxx Xxxxxxxxx and Xxxxx X. Xxxxxxxxx JTWROS		—			—		—		—		5,000
Xxxxx Fargo Bank, N.A. as Trustee of the Xxxxxx X. Xxxxxxx Rev Tr		—			—		—		—		11,764
Xxxxx Xxxxx, MD		—			—		—		—		11,765
Xxxxxxx X. Xxxxx		—			—		—		—		5,882
Xxxxxxxx X. Xxxxxxx		—			—		—		—		600
Xxxxxxx X. Xxxxxxx and Xxxxxxxxx X. Xxxxxxx JTWROS		—			—		—		—		4,706
Xxxxxxxxxxxx Xxxxx		—			—		—		—		5,882
Xxxxx Xxxxxxxx and Xxxxxxxxx Xxxxxxxx JTWROS		—			—		—		—		2,942
Xxxxx X. Xxxxxx, Sole Trustee, Xxxxxx Family Revocable Trust		—			—		—		—		5,882
Xxxxx Xxxxxx and Xxxxx X. Xxxxxx III		—			—		—		—		1,200
Maverick Fund, L.D.C.		—			—		770,212		109,370		103,524
Maverick Fund USA, Ltd.		—			—		310,952		44,155		41,795
Maverick Fund II, Ltd.		—			—		670,149		95,161		90,075
MaxBee Holding Company LLC		—			—		—		—		5,882
Xxxx XxXxxx		25,000			—		—		—		17,647
Xxxxxxxxxxx X. XxXxxxx		—			—		—		—		5,882
Xxxx X. Xxxxxxxxx		101,984			11,250		—		—		11,765
Xxxxx X. Xxxxxx		—			—		—		—		3,000
Mitsui & Co. Venture Partners II, LP		—			—		675,148		95,871		117,647
Xxxx Xxxxxxxxx, Trustee, Xxxx Xxxxxxxxx Profit Sharing Plan FBO Xxxx Xxxxxxxxx		9,800	(3)		—		—		—		5,882
Xxxxxxx Xxxxxxxxx and B. R. Natarajan JTWROS		—			—		—		—		5,882
Fiserv ISS & Co. Cust FBO Xxxxxx X. Xxxxxxx XXX		—			—		—		—		5,882
Xxxxxx X. Xxxxxxx		—			—		—		—		2,941
Xxxxxx Xxxxxx		—			—		—		—		2,400


					No. of				No. of
			No. of Option/		Shares of		No. of		Shares of
	No. of Shares		Warrant		Series A		Series A		Series A-1
	of Common		Common		Preferred		Warrant		Preferred
Investor	Stock		Shares		Stock		Shares		Stock
Xxxxx Xxxxxxx and Xxxxxxxxx Xxxxxxx, JTWROS		—		—		—		—		8,823
Xxxxxx Xxx		—		—		—		—		30,000
Xxx Pardubeck		—		—		—		—		3,000
Xxxxx X. Xxxxxxxx		—		—		1,027		146		5,000
Loyal X. Xxxxxxxx, Xx.		25,000		—		20,564		2,920		16,124
Xxxx X. Xxxxxxxx		—		—		—		—		5,882
Xxxxxxxxx Xxxxxx		—		—		—		—		589
Pinnacle Investment Group, LLC		—		—		—		—		9,000
Xxxxxxx Xxxxxxxxx		—		—		—		—		5,882
Xxxxxxx X. Xxxxxx		—		—		—		—		2,941
Xxxx X. Xxxxxxxx		5,000		500		7,203		1,023		25,169
Xxxxxx X. Xxxxx		500		—		—		—		2,941
Xxxxxx Xxxxxxxxx		—		—		—		—		12,000
Redmile Capital, LP		—		—		—		—		7,569
Redmile Ventures, LLC		—		—		—		—		5,882
Redmile Capital Offshore, Ltd.		—		—		—		—		27,725
Xxxxxxx Xxxxxx and Xxxx Xxxxxx		—		—		—		—		11,764
Xxxxxx Xxxxx and Xxxx Xxxxx JTWROS		—		—		—		—		3,000
Xxxxxx Xxxxxxx		—		—		—		—		10,000
Xxxxxxxx X. Xxxxxx		20,000		—		—		—		4,000
Xxxxx Xxxxxx		—		—		—		—		2,940
Xxxxxx Xxxx Xxxxxxx		—		—		—		—		2,941
Xxxxxxx X. Xxxxxxx, Trustee Xxxxx X. Xxxxxxx Residuary Trust		—		—		—		—		21,200
Xxxxx X. Xxxxxxx		—		—		—		—		11,800
Xxxx X. Xxxxxxx and Xxxxx X. Xxxxxxx		—		—		—		—		5,882
Xxxxx Xxxx Xxxxxxxx		—		—		—		—		5,882
Xxxx X. Xxxxxxxx		—		—		10,216		1,451		20,000
Xxxxx X. Xxxxxxxxx and Xxxx Xxxxxxxx		—		—		—		—		7,059
Xxxx X. Xxxxxxxxxxxx		—		—		—		—		2,941
Xxxx X. Xxxxx and Xxxxxx X. Xxxxx, Ttees of the Xxxx and Xxxxxx Xxxxx Rev Trust		—		—		—		—		29,500
R. Xxxxxxxx Xxxxx		—		—		—		—		5,882
Xxxx X. Xxxxxxx, MD		9,800		—		—		—		5,882
Xxxxx Xxxxxxx		—		—		—		—		5,882
Xxxxxx Xxxx and Xxxxx Xxxx JTWROS		—		—		—		—		5,882
Xxxx X. Xxxxxxx		—		—		—		—		2,000
Chiemsee Money Purchase Plan, dtd 03/11/97, FBO Xxxxxx X. Xxxxxxx		—		—		—		—		6,000
Xxxxxx Xxxxxxx and Xxxxx Xxxxxxx, Ttees of the Xxxxxxx Family Trust dated 2/1/99		—		—		—		—		6,000


							No. of				No. of
				No. of Option/			Shares of		No. of		Shares of
	No. of Shares			Warrant			Series A		Series A		Series A-1
	of Common			Common			Preferred		Warrant		Preferred
Investor	Stock			Shares			Stock		Shares		Stock
Xxxxxxxxx Xxxx Xxxxx, MD		—			—			—		—		5,882
Xxxxx Xxxxxxx		22,500	(5)		2,000	(5)		—		—		1,200
Xxxxxxxx X. Xxxxxxx		—			—			—		—		1,775
Xxxxxx Xxxxxxxx, Trustee, Teledata Financial Services Corp. Profit Shar Plan		12,500			—			—		—		23,529
Xxxxxxx Xxxxxx & Co., Inc. Cust FBO Xxxxxx X. Xxxxxxxx XXX		—			—			—		—		12,000
Xxxxxxxxx X. Xxxxxx and A. Xxxxxxx Xxxxxx JTWROS		—			—			—		—		5,890
TMP, LLLP		106,550			6,000			53,217		7,557		56,768
Top Medical Holding B.V.		—			—			—		—		4,000
Xxxxxx Xxxxx and Xxxxxxx Xxxxx, Trustees, Xxxxx Family Trust		—			—			—		—		2,942
Xxxxx X. Xxxxx		—			—			—		—		11,765
Xxxxxx X. Xxxxxxx and Xxxxxx X. Xxxxxxx		—			—			—		—		3,000
Xxxx Xxxxx and Xxxxxxxx Xxxxx, Ttees, Xxxx Xxxxx and Xxxxxxxx Xxxxx Family Tr		—			—			—		—		5,882
Xxxxx Xxxxxx		—			—			—		—		4,588
Xxxxxxx X. Xxxxx, MD		—			—			—		—		3,000
Xxxxxx X. Xxxxxxxx and Xxxxxx Xxxxx		—			—			—		—		2,941
Xxxxxxx Xxxxxx & Co., Inc. Cust FBO Xxxxxx X. Xxxxxx XXX		—			—			—		—		7,058
Wellspring Capital		—			—			—		—		176,470
Wellspring Management, LLC		—			—			—		—		58,823
Xxxxxx X. Xxxxxx		—			—			—		—		5,882
Fiserv ISS & Co. Cust FBO Xxxxxxxx Xxxxxxxxxx XXX		—			—			—		—		5,882
Xxxxxx Xxxxxxx		—			—			—		—		3,000
Xxxxxx X. Xxxxxxx		—			—			—		—		2,941


(1)		Held jointly with Xxxxx Xxxxxx.

(2)		Includes 4,167 shares held individually.

(3)		Held individually.

(4)		Held in two XXX accounts.

(5)		Held jointly with Xxxxxx Xxxxxxx.

This Amendment No. 2 may be executed in any number of original or facsimile counterparts, and each such counterpart hereof shall be deemed to be an original instrument, but all such counterparts together shall constitute but one agreement. Any counterpart or other signature to this Amendment No. 2 that is delivered by facsimile shall be deemed for all purposes as constituting good and valid execution and delivery by such party of this Amendment No. 2.

Except as set forth herein, all other terms and conditions of the Stockholders Agreement remain the same.

[REMAINDER OF PAGE INTENTIONALLY LEFT BLANK]

IN WITNESS WHEREOF, the parties hereto have executed this Amendment No. 2 to Stockholders Agreement effective the date first written above.


COMPANY CARDIOVASCULAR SYSTEMS, INC.
By:	/s/ Xxxxx X. Xxxxxxxx
	Name:	Xxxxx X. Xxxxxxxx
	Title:	Chief Financial Officer


IN WITNESS WHEREOF, the parties hereto have executed this Amendment No. 2 to Stockholders Agreement effective the date first written above.


HOLDERS

APPLECREST PARTNERS LTD PARTNERSHIP		XXXXXXXX FAMILY LIMITED PARTNERSHIP

By:	/s/ Xxxx X. Xxxxxxxx	By:	/s/ Xxxxx X. Xxxxxxxx
	Name: Xxxx X. Xxxxxxxx		Name: Xxxxx X. Xxxxxxxx
	Title: General Partner		Title: General Partner

/s/ Xxxx X. Xxxxxxxx		/s/ Xxxxx X. Xxxxxxxx

Xxxx X. Xxxxxxxx		Xxxxx X. Xxxxxxxx

/s/ Xxxxx X. Xxxxxxxx		/s/ Xxxxxx X. Xxxxxxxx

Xxxxx X. Xxxxxxxx		Xxxxxx X. Xxxxxxxx

GDN HOLDINGS, LLC		SONORA WEB LIMITED LIABILITY PARTNERSHIP

By:	/s/ Xxxx X. Xxxxxx	By:	/s/ Xxxxx X. Xxxx

	Name: Xxxx X. Xxxxxx		Name: Xxxxx X. Xxxx
	Title: Member		Title:

/s/ Xxxxxxxx X. Xxxxxxxx		/s/ Xxxxx X. Xxxx

Xxxxxxxx X. Xxxxxxxx, individually and as Trustee, Xxxxxxxx X. Xxxxxxxx Rev. Trust dtd 1/8/97, as amended		Xxxxx X. Xxxx, Ph. D.

/s/ Xxxxxxx X. Xxxxxx

Xxxxxxx X. Xxxxxx

IN WITNESS WHEREOF, the parties hereto have executed this Amendment No. 2 to Stockholders Agreement effective the date first written above.


		INVESTORS

		EASTON XXXX CAPITAL PARTNERS, L.P.

		By: EHC GP, L.P. its General Partner
		By: EHC GP, Inc., its General Partner

		By:		/s/ Xxxx X. Xxxxxxxx Name: Xxxx X. Xxxxxxxx
				Title: President


		EASTON CAPITAL PARTNERS, LP

		By: ECP GP, LLC
		By: ECP GP, Inc., its Manager

		By:		/s/ Xxxx X. Xxxxxxxx Name: Xxxx X. Xxxxxxxx
				Title: President

IN WITNESS WHEREOF, the parties hereto have executed this Amendment No. 2 to Stockholders Agreement effective the date first written above.


		INVESTORS

		MAVERICK FUND, L.D.C.

		By: Maverick Capital, Ltd. Its Investment Advisor

		By:		/s/ Xxxx X. XxXxxxxxxx Name: Xxxx X. XxXxxxxxxx
				Title: Limited Partner and General Counsel

		MAVERICK FUND USA, LTD.

		By: Maverick Capital, Ltd. Its Investment Advisor

		By:		/s/ Xxxx X. XxXxxxxxxx

				Name: Xxxx X. XxXxxxxxxx
				Title: Limited Partner and General Counsel

		MAVERICK FUND II, LTD.

		By: Maverick Capital, Ltd. Its Investment Advisor

		By:		/s/ Xxxx X. XxXxxxxxxx

				Name: Xxxx X. XxXxxxxxxx
				Title: Limited Partner and General Counsel

IN WITNESS WHEREOF, the parties hereto have executed this Amendment No. 2 to Stockholders Agreement effective the date first written above.


	INVESTORS SERIES A-1 CONVERTIBLE PREFERRED INVESTORS
	By:	/s/ Xxxxx X. Xxxxxxxx
		Xxxxx X. Xxxxxxxx, as Attorney-in-Fact for the Series A-1 Convertible Preferred Investors named on Exhibit A hereto

EXHIBIT A

SERIES A-1 CONVERTIBLE PREFERRED INVESTORS

Abrasive Technology, Inc.

Profit Sharing Plan

Xxxxxxx Xxxxxx

Xxxx X. Xxxxx

Xxxxxx Xxxxx

Xxxxxxx Xxxxxxxx

Xxxxxxx X. Xxxxxxxxx

Xxxxxxx Xxxxxxxxxx, MD

Xxxxx Xxxxxx

Xxxxxxx X. Xxxxxx

Xxxxxxxxx X. Xxxx and

Xxxxxxx X. Xxxx, JTWROS

RBC Xxxx Xxxxxxxx Cust

FBO Xxxxxxxxx X. Xxxx XXX

Xxxxxxx Xxxxxx & Co. Cust

FBO Xxxx X. Xxxxx XXX

Xxxxxx X. Xxxx and

Xxxxx X. Xxxx, JTWROS

Xxxxx Xxxxx

Xxxxx X. Xxxxxxx

Pensco Trust Company Cust

FBO Xxxxxxx X. Xxxxxx XXX

Xxxxxxx Bold

Xxxx X. Xxxxxxx

Xxxxxx Xxxxx

Xxxxx Xxxxxx and

Xxxx Xxxxxx JTWROS

Xxxxx Xxxxx

Xxxxxx X. Xxxxxxx

Xxxxx X. Xxxxx, Xx.

Xxxxxx and Xxxxxxxx Xxxx,

Ttees, Xxxxxx and Xxxxxxxx

Xxxx Rev. Living Trust

Wedbush Xxxxxx Securities

Cust FBO Xxxxxxx X. Xxx XXX

Xxxxxxx Xxxxx and Xxxxxx Xxxxx, Trustees,
Xxxxx Family Trust

Xxxxxxxxxxx Xxxxxxxx

X. Xxxxxx Xxxxxx

Xxxxxxx Xxxxxx & Co., Inc. Cust

FBO Xxxxxxxx X. Xxxxxxxxxx XXX

Xxxxxx Xxxxxxx Xxxxxxxx

Xxxxxx X. Xxxxxxx Family

Foundation

Xxxxxxx Xxxxxx & Co., Inc.

Cust FBO Xxxxxx X. Xxxxxx XXX

XXXX Partners, LLC

Xxxx X. Xxxxxxxxx

Xxxxx X. Xxxx

Xxxxx Xxxxx

Xxxxxxx X. Xxxxxx and

XxXxx Xxxxxx, XXXXXX

Xxxxxx Xxxx Xxxxxxx

Xxxxxxx Xxxxxx & Co., Inc. Cust

FBO Xxxxx X. Church XXX

Xxxxxxxx LLC Custodian

FBO Xxxxxx Xxxxxxx Xxxxx XXX

Xxxxx X. Xxxxx, M.D.

Xxxx Xxxxxxx

Wachovia Securities Cust

FBO Xxxx Xxxxxxx XXX

Xxx Xxxxxxx

Xxxxx X. Xxxxxxxx

Xxxxx X. Xxxx

Xxxxxx X. Xxxxx, MD

Xxxxx Xxxxxx

Xxxxx X. Xxxxxx, M.D.

Xxxxxxx Xxxxxx & Co., Inc. Cust

FBO Xxxx X. XxXxxx XXX

Xxxxx X. Xxxxxxx

Xxxxx Xxxxx and

Xxxxx Xxxxx JTWROS

Xxxx X. Xxxxx

Xxxx Xxx Xxxxxxxx, MD

Xxxxxxx Xxxxxxx

Xxxxx Xxxxx

Xxxxx X. Xxxxxx

Xxxxxxx X. Xxxxx, M.D.

Xxxxxxx Xxxxxxx

Xxxxxxxx X. Xxxxxx

Xxxxxx X. Xxxxxxx

GDN Holdings, LLC

Xxxxxxx X. Xxxxx, MD and

Xxxxxxx X. Xxxxx JTWROS

Xxxxx Xxxx Xxxxxxx

UBS Financial Services, Inc. Cust

FBO X. Xxxx Xxxxxx XXX

Xxxxxx Xxxxxxx Xxxxxxxxx and

Xxxxx Xxxxxxx Xxxxxxxxx

Xxxxx X. Xxxxxxxx

Xxxxx Xxxxxxxxx

Xxxxx X. Xxxxxxx

Xxx Xxxxxx

Fiserv ISS & Co. Cust

FBO Xxx Xxxxxx XXX

Xxxxx Xxxxxx Xxxxxx

Xxxxx Xxxxx Xxxxxx

Xxxxxx X. Xxxxx

Syntel, LLC Profit Sharing Plan

FBO Xxxxxx Xxxxx Xxxxxx, Xxxxxx

Xxxxx Xxxxxx, Trustee

Xxxxxxx X. Xxxxxx and Xxxxxx X.

Xxxxxx, Trustees, R&S Trust
dated 8/3/99

Xxxxxxx Xxxxxx & Co., Inc. Cust

FBO Xxxxx Xxxxxxx Xxxxxx XXX

Xxxxxx X. Xxxxxxx

Xxxxxxx Xxxxxxx and

Xxxxx Xxxxx Xxxxxxx JTWROS

Xxxxxx Xxxxxxxx

Xxxxx X. Xxxx

Xxxxx X. Xxxxxx, Trustee,

Xxxxxx Living Trust dtd 12/10/96

Innovasc, LLC

Xxxxxxx Xxxxxxx and

Xxxxx Xxxxxxx, JTWROS

Xxxxxx X. Xxxxxx and

Xxxxxx X. Xxxxxx JTWROS

ITX International Equity Corp.

Xxxx Xxxxxx

Xxxx Xxx

Takemito Jimbo

Xxxxxxx Xxxxx Xxxxx, MD

Xxxxx X. Xxxxxxx and

Xxxx X. Xxxxx JTWROS

Xxxxx X. Xxxxxx

Salva Xxxxxx and

Xxxx Xxxxxx JTWROS

KD Holding, Inc.

Xxxxxx X. Xxxxxx and

Xxxxxx Xxxxxx JTWROS

Xxxxx Xxxxxx

Xxxxxx Xxxxxxxx, Ttee, Xxxxxx Xxxxxxxx
and Xxxxx Xxxxxxx Xxxxxxxx Trust U/A

Xxxxxxx X. Xxxxx

E*Trade as Cust

FBO Xxxxxx X. Xxxxxx XXX

Xx Xxxxx and

Xxxxxx Xxxxx JTWROS

Xx Xxxxx

Xxxxx Xxxxx, M.D.

Xxxxx Xxxxx

Xxxx X. Xxxxxx

Habib Xxxx Xxxxxxx

Xxxxx Xxxxxxxx

Xxxxx Xxx

MLPF&S Cust FBO
Xxxxx Xxx XXX

Xxxxxx Xxxxxxxxx and
Xxxxxx Xxxxxxxxx

Xxxxxxx Xxxxxx Xxxxxxxxx and
Xxxxx X. Xxxxxxxxx JTWROS

Xxxxx Fargo Bank, N.A. as Trustee
of the Xxxxxx X. Xxxxxxx Rev Tr

Xxxxx Xxxxx, MD

Xxxxxxx X. Xxxxx

Xxxxxxxx X. Xxxxxxx

Xxxxxxx X. Xxxxxxx and
Xxxxxxxxx X. Xxxxxxx JTWROS

Xxxxxxxxxxxx Xxxxx

Xxxxx Xxxxxxxx and
Xxxxxxxxx Xxxxxxxx JTWROS

Xxxxx X. Xxxxxx, Sole Trustee,
Xxxxxx Family Revocable Trust

Xxxxx Xxxxxx and
Xxxxx X. Xxxxxx III

Maverick Fund, L.D.C.

Maverick Fund USA, Ltd.

Maverick Fund II, Ltd.

MaxBee Holding Company LLC

Xxxx XxXxxx

Xxxxxxxxxxx X. XxXxxxx

Xxxx X. Xxxxxxxxx

Xxxxx X. Xxxxxx

Mitsui & Co. Venture Partners II, LP

Xxxx Xxxxxxxxx, Trustee, Xxxx
Xxxxxxxxx Profit Sharing Plan
FBO Xxxx Xxxxxxxxx

Xxxxxxx Xxxxxxxxx and
B. R. Natarajan JTWROS

Fiserv ISS & Co. Cust
FBO Xxxxxx X. Xxxxxxx XXX

Xxxxxx X. Xxxxxxx

Xxxxxx Xxxxxx

Xxxxx Xxxxxxx and
Xxxxxxxxx Xxxxxxx, JTWROS

Ashish Xxx

Xxx Pardubeck

Xxxxx X. Xxxxxxxx

Loyal X. Xxxxxxxx, Xx.

Xxxx X. Xxxxxxxx

Xxxxxxxxx Xxxxxx

Pinnacle Investment Group, LLC

Xxxxxxx Xxxxxxxxx

Xxxxxxx X. Xxxxxx

Xxxx X. Xxxxxxxx

Xxxxxx X. Xxxxx

Xxxxxx Xxxxxxxxx

Xxxxxxx Capital, XX

Xxxxxxx Ventures, LLC

Redmile Capital Offshore, Ltd.

Xxxxxxx Xxxxxx and Xxxx Xxxxxx

Xxxxxx Xxxxx and
Xxxx Xxxxx JTWROS

Xxxxxx Xxxxxxx

Xxxxxxxx X. Xxxxxx

Xxxxx Xxxxxx

Xxxxxx Xxxx Xxxxxxx

Xxxxxxx X. Xxxxxxx, Trustee
Xxxxx X. Xxxxxxx Residuary Trust

Xxxxx X. Xxxxxxx

Xxxx X. Xxxxxxx and
Xxxxx X. Xxxxxxx

Xxxxx Xxxx Xxxxxxxx

Xxxx X. Xxxxxxxx

Xxxxx X. Xxxxxxxxx and
Xxxx Xxxxxxxx

Xxxx X. Xxxxxxxxxxxx

Xxxx X. Xxxxx and Xxxxxx X. Xxxxx,
Ttees of the Xxxx and Xxxxxx Xxxxx
Rev Trust

R. Xxxxxxxx Xxxxx

Xxxx X. Xxxxxxx, MD

Xxxxx Xxxxxxx

Xxxxxx Xxxx and
Xxxxx Xxxx JTWROS

Xxxx X. Xxxxxxx

Chiemsee Money Purchase Plan,
dtd 03/11/97, FBO Xxxxxx X. Xxxxxxx

Xxxxxx Xxxxxxx and Xxxxx Xxxxxxx,
Ttees of the Xxxxxxx Family Trust
dated 2/1/99

Xxxxxxxxx Xxxx Xxxxx, MD

Xxxxx Xxxxxxx

Xxxxxxxx X. Xxxxxxx

Xxxxxx Xxxxxxxx, Trustee,
Teledata Financial Services Corp.
Profit Shar Plan

Xxxxxxx Xxxxxx & Co., Inc. Cust
FBO Xxxxxx X. Xxxxxxxx XXX

Xxxxxxxxx X. Xxxxxx and
A. Xxxxxxx Xxxxxx JTWROS

TMP, LLLP

Top Medical Holding B.V.

Xxxxxx Xxxxx and Xxxxxxx Xxxxx,
Trustees, Xxxxx Family Trust

Xxxxx X. Xxxxx

Xxxxxx X. Xxxxxxx and
Xxxxxx X. Xxxxxxx

Xxxx Xxxxx and Xxxxxxxx Xxxxx,
Ttees, Xxxx Xxxxx and Xxxxxxxx
Xxxxx Family Tr

Xxxxx Xxxxxx

Xxxxxxx X. Xxxxx, MD

Xxxxxx X. Xxxxxxxx and
Xxxxxx Xxxxx

Xxxxxxx Xxxxxx & Co., Inc. Cust
FBO Xxxxxx X. Xxxxxx XXX

Xxxxxxxxxx Capital

Wellspring Management, LLC

Xxxxxx X. Xxxxxx

Fiserv ISS & Co. Cust
FBO Xxxxxxxx Xxxxxxxxxx XXX

Xxxxxx Xxxxxxx

Xxxxxx X. Xxxxxxx

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Table of Contents

AMENDMENT NO. 2 TO STOCKHOLDERS AGREEMENT

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