AMENDMENT NO. 2 TO INVESTOR’S RIGHTS AGREEMENT

EXHIBIT 4.4

AMENDMENT NO. 2 TO INVESTOR’S RIGHTS AGREEMENT

THIS AMENDMENT NO. 2 TO INVESTOR’S RIGHTS 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 Investors signatory hereto.

RECITALS

WHEREAS, this Amendment No. 2 amends an Investor’s Rights Agreement, dated July 19, 2006 (the "Investor’s Rights Agreement”) by and between the Company and the “Investors” set forth on Schedule A thereto and “Stockholders” set forth on Schedule B thereto, as amended by Amendment No. 1 to Investor’s Rights Agreement, dated October 3, 2006 by and between the Company, ITX International Equity Corp. and the “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; and

WHEREAS, Investors executing this Amendment No. 2 hold at least 66 2/3% of the combined voting power of the outstanding shares of Series A Preferred Stock and any Common Stock issued upon conversion of the Series A Preferred Stock.

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:

	1.		Defined Terms. Capitalized terms not defined herein shall have the meanings ascribed to them in the Investor’s Rights 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 Investor’s Rights Agreement.

Schedule A is hereby amended in its entirety as follows and each of the Series A-1 Investors shall be deemed an Investor as that term is used in the Investor’s Rights Agreement:

Investors


	Series A		Series A		Series A-1
	Preferred		Preferred		Preferred		Aggregate
Name of Investor	Shares		Warrant		Shares		Purchase Price
Easton Xxxx Capital Partners, L.P.		612,960		87,040		—		—
Easton Xxxx Partners, LP		612,960		87,040		—		—
Maverick Fund, L.D.C.		770,212		109,370		103,524	$	879,954.00
Maverick Fund USA, Ltd.		310,952		44,155		41,795	$	355,257.50
Maverick Fund II, Ltd.		670,149		95,161		90,075	$	765,637.50
Mitsui & Co. Venture Partners II, L.P.		675,148		95,871		117,647	$	999,999.50
ITX International Equity Corp.		350,263		49,737		47,079	$	400,171.50
Abrasive Technology, Inc. Profit Shar Pl		—		—		32,000	$	272,000.00
Xxxxxxx Xxxxxx		8,943		1,270		3,552	$	30,200.00
Xxxx X. Xxxxx		—		—		6,000	$	51,000.00
Xxxxxx Xxxxx		—		—		5,000	$	42,500.00
Xxxxxxx Xxxxxxxx		—		—		12,000	$	102,000.00
Xxxxxxx X. Xxxxxxxxx		35,937		5,103		18,255	$	155,167.50
Xxxxxxx Xxxxxxxxxx, MD		—		—		5,882	$	49,997.00
Xxxxx Xxxxxx		—		—		28,000	$	238,000.00
Xxxxxxx X. Xxxxxx		44,474		6,315		11,928	$	101,388.00
Xxxxxxxxx X. Xxxx and Xxxxxxx X. Xxxx, JTWROS		—		—		6,000	$	51,000.00
RBC Xxxx Xxxxxxxx Cust FBO Xxxxxxxxx X. Xxxx XXX		—		—		9,500	$	80,750.00
Xxxxxxx Xxxxxx & Co. Cust FBO Xxxx X. Xxxxx XXX		—		—		5,882	$	50,000.00
Xxxxxx X. Xxxx and Xxxxx X. Xxxx, JTWROS		—		—		5,882	$	50,000.00
Xxxxx Xxxxx		—		—		5,882	$	50,000.00
Xxxxx X. Xxxxxxx		—		—		5,900	$	50,150.00
Pensco Trust Company Cust FBO Xxxxxxx X. Xxxxxx XXX		—		—		4,900	$	41,650.00
Xxxxxxx Bold		—		—		3,600	$	30,600.00
Xxxx X. Xxxxxxx		—		—		11,764	$	99,994.00
Xxxxxx Xxxxx		—		—		9,000	$	76,500.00
Xxxxx Xxxxxx and Xxxx Xxxxxx JTWROS		8,943		1,270		4,120	$	35,020.00
Xxxxx Xxxxx		10,260		1,457		17,000	$	144,500.00
Xxxxxx X. Xxxxxxx		—		—		2,942	$	25,007.00
Xxxxx X. Xxxxx, Xx.		—		—		7,500	$	63,750.00
Xxxxxx and Xxxxxxxx Xxxx, Trustees, Xxxxxx and Xxxxxxxx Xxxx Rev. Living Trust dated 4/12/04		—		—		5,882	$	50,000.00
Wedbush Xxxxxx Securities Cust FBO Xxxxxxx X. Xxx XXX		—		—		7,050	$	59,925.00
Xxxxxxx Xxxxx and Xxxxxx Xxxxx, Trustees, Xxxxx Family Trust		—		—		5,882	$	50,000.00
Xxxxxxxxxxx Xxxxxxxx		—		—		2,941	$	25,000.00


	Series A		Series A		Series A-1
	Preferred		Preferred		Preferred		Aggregate
Name of Investor	Shares		Warrant		Shares		Purchase Price
H. Xxxxxx Xxxxxx		—		—		5,882	$	50,000.00
Xxxxxxx Xxxxxx & Co., Inc. Cust FBO Xxxxxxxx X. Xxxxxxxxxx XXX		—		—		5,800	$	49,300.00
Xxxxxx Xxxxxxx Xxxxxxxx		—		—		29,400	$	249,900.00
Xxxxxx X. Xxxxxxx Family Foundation		43,783		6,217		29,414	$	250,019.00
Xxxxxxx Xxxxxx & Co., Inc. Cust FBO Xxxxxx X. Xxxxxx XXX		—		—		5,882	$	50,000.00
CAVA Partners, LLC		—		—		5,882	$	50,000.00
Xxxx X. Xxxxxxxxx		—		—		3,000	$	25,500.00
Xxxxx X. Xxxx		—		—		5,882	$	50,000.00
Xxxxx Xxxxx		—		—		17,647	$	150,000.00
Xxxxxxx X. Xxxxxx and XxXxx Xxxxxx, JTWROS		—		—		2,942	$	25,007.00
Xxxxxx Xxxx Xxxxxxx		—		—		6,777	$	57,604.50
Xxxxxxx Xxxxxx & Co., Inc. Cust FBO Xxxxx X. Xxxxxx XXX		—		—		5,882	$	50,000.00
Pershing LLC Custodian FBO Xxxxxx Xxxxxxx Xxxxx XXX		—		—		5,882	$	50,000.00
Xxxxx X. Xxxxx, M.D.		—		—		5,884	$	50,014.00
Xxxx Xxxxxxx		—		—		11,765	$	100,002.50
Wachovia Securities Cust FBO Xxxx Xxxxxxx XXX		—		—		12,941	$	110,000.00
Xxx Xxxxxxx		—		—		5,882	$	50,000.00
Xxxxx X. Xxxxxxxx		—		—		11,750	$	99,875.00
Xxxxx X. Xxxx		—		—		590	$	5,015.00
Xxxxxx X. Xxxxx, MD		—		—		5,882	$	50,000.00
Xxxxx Xxxxxx		—		—		5,882	$	50,000.00
Xxxxx X. Xxxxxx, M.D.		—		—		2,941	$	25,000.00
Xxxxxxx Xxxxxx & Co., Inc. Cust FBO Xxxx X. XxXxxx XXX		—		—		6,000	$	51,000.00
Xxxxx X. Xxxxxxx		—		—		4,000	$	34,000.00
Xxxxx Xxxxx and Xxxxx Xxxxx JTWROS		—		—		2,942	$	25,007.00
Xxxx X. Xxxxx		—		—		5,883	$	50,005.50
Xxxx Xxx Xxxxxxxx, MD		—		—		6,000	$	51,000.00
Xxxxxxx Xxxxxxx		—		—		2,942	$	25,007.00
Xxxxx Xxxxx		—		—		5,882	$	50,000.00
Xxxxx X. Xxxxxx		17,890		2,540		2,404	$	20,434.00
Xxxxxxx X. Xxxxx, M.D.		—		—		2,941	$	25,000.00
Xxxxxxx Xxxxxxx		—		—		5,882	$	50,000.00
Xxxxxxxx X. Xxxxxx		—		—		5,882	$	50,000.00
Xxxxxx X. Xxxxxxx		—		—		5,882	$	50,000.00
GDN Holdings, LLC		131,349		18,652		41,913	$	356,260.50
Xxxxxxx X. Xxxxx, MD and Xxxxxxx X. Xxxxx JTWROS		—		—		2,950	$	25,075.00
Xxxxx Xxxx Xxxxxxx		—		—		19,059	$	162,001.50
UBS Financial Services, Inc. Cust FBO X. Xxxx Xxxxxx XXX		—		—		6,500	$	55,250.00


	Series A		Series A		Series A-1
	Preferred		Preferred		Preferred		Aggregate
Name of Investor	Shares		Warrant		Shares		Purchase Xxxxx
Xxxxxx Xxxxxxx Xxxxxxxxx and Xxxxx Xxxxxxx Xxxxxxxxx		—		—		10,000	$	85,000.00
Xxxxx X. Xxxxxxxx		—		—		18,750	$	159,375.00
Xxxxx Xxxxxxxxx		—		—		7,060	$	60,010.00
Xxxxx X. Xxxxxxx		—		—		2,941	$	25,000.00
Xxx Xxxxxx		—		—		2,941	$	25,000.00
Fiserv ISS & Co. Cust FBO Xxx Xxxxxx XXX		—		—		5,882	$	50,000.00
Xxxxx Xxxxxx Xxxxxx		—		—		11,764	$	100,000.00
Xxxxx Xxxxx Xxxxxx		—		—		600	$	5,100.00
Xxxxxx X. Xxxxx		8,815		1,252		9,431	$	80,173.50
Syntel, LLC Profit Sharing Plan FBO Xxxxxx Xxxxx Xxxxxx, Xxxxxx Xxxxx Xxxxxx, Trustee		—		—		5,882	$	49,997.00
Xxxxxxx X. Xxxxxx and Xxxxxx X.Xxxxxx, Trustees, R&S Trust dated 8/3/99		—		—		5,882	$	50,000.00
Xxxxxxx Xxxxxx & Co., Inc. Cust FBO Xxxxx Xxxxxxx Xxxxxx XXX		—		—		13,000	$	110,500.00
Xxxxxx X. Xxxxxxx		—		—		17,647	$	150,000.00
Xxxxxxx Xxxxxxx and Xxxxx Xxxxx Xxxxxxx JTWROS		—		—		5,882	$	50,000.00
Xxxxxx Xxxxxxxx		—		—		2,942	$	25,007.00
Xxxxx X. Xxxx		—		—		8,000	$	68,000.00
Xxxxx X. Xxxxxx, Trustee, Xxxxxx Living Trust dtd 12/10/96		—		—		5,882	$	50,000.00
Innovasc, LLC		—		—		4,500	$	38,250.00
Xxxxxxx Xxxxxxx and Xxxxx Xxxxxxx, JTWROS		—		—		2,941	$	25,000.00
Xxxxxx X. Xxxxxx and Xxxxxx X. Xxxxxx JTWROS		17,657		2,507		7,108	$	60,418.00
Xxxx Xxxxxx		—		—		11,765	$	100,000.00
Xxxx Xxx		—		—		5,900	$	50,150.00
Takemito Jimbo		—		—		11,765	$	100,002.50
Xxxxxxx Xxxxx Xxxxx, MD		—		—		6,000	$	51,000.00
Xxxxx X. Xxxxxxx and Xxxx X. Xxxxx JTWROS		—		—		3,529	$	30,000.00
Xxxxx X. Xxxxxx		—		—		5,882	$	50,000.00
Salva Xxxxxx and Xxxx Xxxxxx JTWROS		—		—		3,529	$	30,000.00
KD Holding, Inc.		—		—		6,000	$	51,000.00
Xxxxxx X. Xxxxxx and Xxxxxx Xxxxxx JTWROS		—		—		17,647	$	150,000.00
Xxxxx Xxxxxx		—		—		2,941	$	25,000.00
Xxxxxx Xxxxxxxx, Ttee, Xxxxxx Xxxxxxxx and Xxxxx Xxxxxxx Xxxxxxxx Trust U/A		—		—		5,882	$	50,000.00
Xxxxxxx X. Xxxxx		—		—		10,000	$	85,000.00
E*Trade as Cust FBO Xxxxxx X. Xxxxxx XXX		—		—		5,883	$	50,005.50


	Series A		Series A		Series A-1
	Preferred		Preferred		Preferred		Aggregate
Name of Investor	Shares		Warrant		Shares		Purchase Price
Xx Xxxxx and Xxxxxx Xxxxx JTWROS		—		—		8,825	$	75,012.50
Xx Xxxxx		—		—		2,942	$	25,007.00
Xxxxx Xxxxx, M.D.		—		—		3,000	$	25,500.00
Xxxxx Xxxxx		—		—		22,600	$	192,100.00
Xxxx X. Xxxxxx		—		—		5,882	$	50,000.00
Habib Xxxx Xxxxxxx		—		—		6,000	$	51,000.00
Xxxxx Xxxxxxxx		—		—		2,942	$	25,007.00
Xxxxx Xxx		—		—		17,000	$	144,500.00
MLPF&S Cust FBO Xxxxx Xxx XXX		—		—		23,529	$	199,996.50
Xxxxxx Xxxxxxxxx and Xxxxxx Xxxxxxxxx		—		—		11,764	$	100,000.00
Xxxxxxx Xxxxxx Xxxxxxxxx and Xxxxx X. Xxxxxxxxx JTWROS		—		—		5,000	$	42,500.00
Xxxxx Fargo Bank, N.A. as Trustee of the Xxxxxx X. Xxxxxxx Rev Trust		—		—		11,764	$	99,994.00
Xxxxx Xxxxx, MD		—		—		11,765	$	100,000.00
Xxxxxxx X. Xxxxx		—		—		5,882	$	50,000.00
Xxxxxxxx X. Xxxxxxx		—		—		600	$	5,100.00
Xxxxxxx X. Xxxxxxx and Xxxxxxxxx X. Xxxxxxx JTWROS		—		—		4,706	$	40,001.00
Xxxxxxxxxxxx Xxxxx		—		—		5,882	$	50,000.00
Xxxxx Xxxxxxxx and Xxxxxxxxx Xxxxxxxx JTWROS		—		—		2,942	$	25,007.00
Xxxxx X. Xxxxxx, Sole Trustee of the Xxxxxx Family Revocable Trust		—		—		5,882	$	50,000.00
Xxxxx Xxxxxx and Xxxxx X. Xxxxxx III		—		—		1,200	$	10,200.00
MaxBee Holding Company LLC		—		—		5,882	$	50,000.00
Xxxx XxXxxx		—		—		17,647	$	150,000.00
Xxxxxxxxxxx X. XxXxxxx		—		—		5,882	$	50,000.00
Xxxx X. Xxxxxxxxx		—		—		11,765	$	100,002.50
Xxxxx X. Xxxxxx		—		—		3,000	$	25,500.00
Xxxx Xxxxxxxxx, Trustee of the Xxxx Xxxxxxxxx Profit Sharing Plan FBO Xxxx Xxxxxxxxx		—		—		5,882	$	49,997.00
Xxxxxxx Xxxxxxxxx and B. R. Natarajan JTWROS		—		—		5,882	$	50,000.00
Fiserv ISS & Co. Cust FBO Xxxxxx X. Xxxxxxx XXX		—		—		5,882	$	50,000.00
Xxxxxx X. Xxxxxxx		—		—		2,941	$	25,000.00
Xxxxxx Xxxxxx		—		—		2,400	$	20,400.00
Xxxxx Xxxxxxx and Xxxxxxxxx Xxxxxxx, JTWROS		—		—		8,823	$	75,000.00
Xxxxxx Xxx		—		—		30,000	$	255,000.00
Xxx Pardubeck		—		—		3,000	$	25,500.00
Xxxxx X. Xxxxxxxx		1,027		146		5,000	$	42,500.00
Loyal X. Xxxxxxxx, Xx.		20,564		2,920		16,124	$	137,054.00
Xxxx X. Xxxxxxxx		—		—		5,882	$	50,000.00


	Series A		Series A		Series A-1
	Preferred		Preferred		Preferred		Aggregate
Name of Investor	Shares		Warrant		Shares		Purchase Price
Xxxxxxxxx Xxxxxx		—		—		589	$	5,006.50
Pinnacle Investment Group, LLC		—		—		9,000	$	76,500.00
Xxxxxxx Xxxxxxxxx		—		—		5,882	$	50,000.00
Xxxxxxx X. Xxxxxx		—		—		2,941	$	24,998.50
Xxxx X. Xxxxxxxx		7,203		1,023		25,169	$	213,936.50
Xxxxxx X. Xxxxx		—		—		2,941	$	24,998.50
Xxxxxx Xxxxxxxxx		—		—		12,000	$	102,000.00
Redmile Capital, LP		—		—		7,569	$	64,341.00
Redmile Ventures, LLC		—		—		5,882	$	49,997.00
Redmile Capital Offshore, Ltd.		—		—		27,725	$	235,658.00
Xxxxxxx Xxxxxx and Xxxx Xxxxxx		—		—		11,764	$	99,994.00
Xxxxxx Xxxxx and Xxxx Xxxxx JTWROS		—		—		3,000	$	25,500.00
Xxxxxx Xxxxxxx		—		—		10,000	$	85,000.00
Xxxxxxxx X. Xxxxxx		—		—		4,000	$	34,000.00
Xxxxx Xxxxxx		—		—		2,940	$	24,990.00
Xxxxxx Xxxx Xxxxxxx		—		—		2,941	$	25,000.00
Xxxxxxx X. Xxxxxxx, Trustee Xxxxx X. Xxxxxxx Residuary Trust		—		—		21,200	$	180,200.00
Xxxxx X. Xxxxxxx		—		—		11,800	$	100,300.00
Xxxx X. Xxxxxxx and Xxxxx X. Xxxxxxx		—		—		5,882	$	50,000.00
Xxxxx Xxxx Xxxxxxxx		—		—		5,882	$	50,000.00
Xxxx X. Xxxxxxxx		10,216		1,451		20,000	$	170,000.00
Xxxxx X. Xxxxxxxxx and Xxxx Xxxxxxxx		—		—		7,059	$	60,001.50
Xxxx X. Xxxxxxxxxxxx		—		—		2,941	$	25,000.00
Xxxx X. Xxxxx and Xxxxxx X. Xxxxx, Ttees of the Xxxx and Xxxxxx Xxxxx Rev Trust		—		—		29,500	$	250,750.00
R. Xxxxxxxx Xxxxx		—		—		5,882	$	50,000.00
Xxxx X. Xxxxxxx, MD		—		—		5,882	$	50,000.00
Xxxxx Xxxxxxx		—		—		5,882	$	50,000.00
Xxxxxx Xxxx and Xxxxx Xxxx JTWROS		—		—		5,882	$	50,000.00
Xxxx X. Xxxxxxx		—		—		2,000	$	17,000.00
Chiemsee Money Purchase Plan, dtd 03/11/97, FBO Xxxxxx X. Xxxxxxx		—		—		6,000	$	51,000.00
Xxxxxx Xxxxxxx and Xxxxx Xxxxxxx, Ttees of the Xxxxxxx Family Trust dated 2/1/99		—		—		6,000	$	51,000.00
Xxxxxxxxx Xxxx Xxxxx, MD		—		—		5,882	$	50,000.00
Xxxxx Xxxxxxx		—		—		1,200	$	10,200.00
Xxxxxxxx X. Xxxxxxx		—		—		1,775	$	15,087.50
Xxxxxx Xxxxxxxx, Trustee, Teledata Financial Services Corp. Profit Shar Plan		—		—		23,529	$	200,000.00
Xxxxxxx Xxxxxx & Co., Inc. Cust FBO Xxxxxx X. Xxxxxxxx XXX		—		—		12,000	$	102,000.00
Xxxxxxxxx X. Xxxxxx and A. Xxxxxxx Xxxxxx JTWROS		—		—		5,890	$	50,065.00


	Series A		Series A		Series A-1
	Preferred		Preferred		Preferred		Aggregate
Name of Investor	Shares		Warrant		Shares		Purchase Price
TMP, LLLP		53,217		7,557		56,768	$	482,529.00
Top Medical Holding B.V.		—		—		4,000	$	34,000.00
Xxxxxx Xxxxx and Xxxxxxx Xxxxx, Trustees, Xxxxx Family Trust		—		—		2,942	$	25,007.00
Xxxxx X. Xxxxx		—		—		11,765	$	100,000.00
Xxxxxx X. Xxxxxxx and Xxxxxx X. Xxxxxxx		—		—		3,000	$	25,500.00
Xxxx Xxxxx and Xxxxxxxx Xxxxx, Ttees, Xxxx Xxxxx and Xxxxxxxx Xxxxx Family Tr		—		—		5,882	$	50,000.00
Xxxxx Xxxxxx		—		—		4,588	$	39,000.00
Xxxxxxx X. Xxxxx, MD		—		—		3,000	$	25,500.00
Xxxxxx X. Xxxxxxxx and Xxxxxx Xxxxx		—		—		2,941	$	24,998.50
Xxxxxxx Xxxxxx & Co., Inc. Cust FBO Xxxxxx X. Xxxxxx XXX		—		—		7,058	$	60,000.00
Wellspring Capital		—		—		176,470	$	1,500,000.00
Wellspring Management, LLC		—		—		58,823	$	500,000.00
Xxxxxx X. Xxxxxx		—		—		5,882	$	50,000.00
Fiserv ISS & Co. Cust FBO Xxxxxxxx Xxxxxxxxxx XXX		—		—		5,882	$	50,000.00
Xxxxxx Xxxxxxx		—		—		3,000	$	25,500.00
Xxxxxx X. Xxxxxxx		—		—		2,941	$	25,000.00
Total		4,002,644		568,374		2,188,425	$	18,601,821.50

	4.		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.

	5.		Except as set forth herein, all other terms and conditions of the Investor’s Rights Agreement remain the same.

[REMAINDER OF PAGE INTENTIONALLY LEFT BLANK]

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


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 Investor’s Rights Agreement effective the date first written above.


		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 Investor’s Rights Agreement effective the date first written above.


		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 Investor’s Rights Agreement effective the date first written above.


		MITSUI & CO. VENTURE PARTNERS II, L.P.

		By:		Mitsui & Co. Venture Partners, Inc.
				Its General Partner

		By:		/s/ Xxxxxx Xxxx

				Name: Xxxxxx Xxxx
				Title: President & CEO

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


	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 INVESTOR’S RIGHTS AGREEMENT

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