Warrant, dated June 29, 2012



 EXHIBIT 10.56 
 THIS WARRANT AND THE SHARES ISSUABLE HEREUNDER HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE “ACT”), OR THE SECURITIES LAWS OF ANY STATE AND, EXCEPT AS
SET FORTH IN SECTIONS 6.3 AND 6.4 BELOW, MAY NOT BE OFFERED, SOLD, PLEDGED OR OTHERWISE TRANSFERRED UNLESS AND UNTIL REGISTERED UNDER SAID ACT AND LAWS OR IN FORM AND SUBSTANCE SATISFACTORY TO THE COMPANY, SUCH OFFER, SALE, PLEDGE OR OTHER TRANSFER
IS EXEMPT FROM SUCH REGISTRATION. 
 WARRANT TO PURCHASE STOCK 
 Company: CARDIOVASCULAR SYSTEMS, INC., a Delaware corporation 
 Number of Shares: 18,649
shares 
 Type/Series of Stock: Common Stock 
 Warrant Price: $9.652 per share 
 Issue Date: June 29, 2012 

Expiration Date: June 29, 2022 See also Section 6.1(b). 

	Credit Facility:	This Warrant to Purchase Stock (“Warrant”) is issued in connection with that certain Second Amendment to Loan and Security Agreement of
substantially even date herewith between Silicon Valley Bank and the Company (the “Loan Agreement”). 

 THIS WARRANT CERTIFIES THAT, for good and valuable consideration, SILICON VALLEY BANK (together with any successor or permitted assignee or transferee of this Warrant or of any shares issued upon exercise
hereof, “Holder”) is entitled to purchase the number of fully paid and non-assessable shares (the “Shares”) of the above-stated Type/Series of Stock (the “Class”) of the
above-named company (the “Company”) at the above-stated Warrant Price, all as set forth above and as adjusted pursuant to Section 2 of this Warrant, subject to the provisions and upon the terms and conditions set forth
in this Warrant. Reference is made to Section 6.4 of this Warrant whereby Silicon Valley Bank shall transfer this Warrant to its parent company, SVB Financial Group. 
 SECTION 1. EXERCISE. 
 1.1 Method of Exercise. Holder may at any
time and from time to time exercise this Warrant, in whole or in part, by delivering to the Company the original of this Warrant together with a duly executed Notice of Exercise in substantially the form attached hereto as Appendix 1 and, unless
Holder is exercising this Warrant pursuant to a cashless exercise set forth in Section 1.2, a check, wire transfer of same-day funds (to an account designated by the Company), or other form of payment acceptable to the Company for the aggregate
Warrant Price for the Shares being purchased. 
 1.2 Cashless Exercise. On any exercise of this Warrant, in lieu of
payment of the aggregate Warrant Price in the manner as specified in Section 1.1 above, but otherwise in accordance with the requirements of Section 1.1, Holder may elect to receive Shares equal to the








 
value of this Warrant, or portion hereof as to which this Warrant is being exercised. Thereupon, the Company shall issue to the Holder such number of fully paid and non-assessable Shares as are
computed using the following formula: 
  

	 	X =	Y(A-B)/A 

 where: 

 

	 	X =	the number of Shares to be issued to the Holder; 

  

	 	Y =	the number of Shares with respect to which this Warrant is being exercised (inclusive of the Shares surrendered to the Company in payment of the aggregate Warrant
Price); 

  

	 	A =	the Fair Market Value (as determined pursuant to Section 1.3 below) of one Share; and 


 

	 	B =	the Warrant Price. 

 1.3 Fair
Market Value. If the Company’s common stock is then traded or quoted on a nationally recognized securities exchange, inter-dealer quotation system or over-the-counter market (a “Trading Market”) and the Class is
common stock, the fair market value of a Share shall be the closing price or last sale price of a share of common stock reported for the Business Day immediately before the date on which Holder delivers this Warrant together with its Notice of
Exercise to the Company. If the Company’s common stock is then traded in a Trading Market and the Class is a series of the Company’s convertible preferred stock, the fair market value of a Share shall be the closing price or last sale
price of a share of the Company’s common stock reported for the Business Day immediately before the date on which Holder delivers this Warrant together with its Notice of Exercise to the Company multiplied by the number of shares of the
Company’s common stock into which a Share is then convertible. If the Company’s common stock is not traded in a Trading Market, the Board of Directors of the Company shall determine the fair market value of a Share in its reasonable good
faith judgment. 
 1.4 Delivery of Certificate and New Warrant. Within a reasonable time after Holder exercises this
Warrant in the manner set forth in Section 1.1 or 1.2 above, the Company shall deliver to Holder a certificate representing the Shares issued to Holder upon such exercise and, if this Warrant has not been fully exercised and has not expired, a
new warrant of like tenor representing the Shares not so acquired. 
 1.5 Replacement of Warrant. On receipt of evidence
reasonably satisfactory to the Company of the loss, theft, destruction or mutilation of this Warrant and, in the case of loss, theft or destruction, on delivery of an indemnity agreement reasonably satisfactory in form, substance and amount to the
Company or, in the case of mutilation, on surrender of this Warrant to the Company for cancellation, the Company shall, within a reasonable time, execute and deliver to Holder, in lieu of this Warrant, a new warrant of like tenor and amount.


  
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 1.6 Treatment of Warrant Upon Acquisition of Company. 

(a) Acquisition. For the purpose of this Warrant, “Acquisition” means any transaction or series of related
transactions involving: (i) the sale, lease, exclusive license, or other disposition of all or substantially all of the assets of the Company (ii) any merger or consolidation of the Company into or with another person or entity (other than
a merger or consolidation effected exclusively to change the Company’s domicile), or any other corporate reorganization, in which the stockholders of the Company in their capacity as such immediately prior to such merger, consolidation or
reorganization, own less than a majority of the Company’s (or the surviving or successor entity’s) outstanding voting power immediately after such merger, consolidation or reorganization; or (iii) any sale or other transfer by the
stockholders of the Company of shares representing at least a majority of the Company’s then-total outstanding combined voting power. 
 (b) Treatment of Warrant at Acquisition. In the event of an Acquisition in which the consideration to be received by the Company’s stockholders consists solely of cash, solely of Marketable
Securities or a combination of cash and Marketable Securities (a “Cash/Public Acquisition”), either (i) Holder shall exercise this Warrant pursuant to Section 1.1 and/or 1.2 and such exercise will be deemed
effective immediately prior to and contingent upon the consummation of such Acquisition or (ii) if Holder elects not to exercise the Warrant, this Warrant will expire immediately prior to the consummation of such Acquisition. 

(c) The Company shall provide Holder with written notice of its request relating to the Cash/Public Acquisition (together with such
reasonable information as Holder may reasonably require regarding the treatment of this Warrant in connection with such contemplated Cash/Public Acquisition giving rise to such notice), which is to be delivered to Holder not less than seven
(7) Business Days prior to the closing of the proposed Cash/Public Acquisition. In the event the Company does not provide such notice, then if, immediately prior to the Cash/Public Acquisition, the fair market value of one Share (or other
security issuable upon the exercise hereof) as determined in accordance with Section 1.3 above would be greater than the Warrant Price in effect on such date, then this Warrant shall automatically be deemed on and as of such date to be
exercised pursuant to Section 1.2 above as to all Shares (or such other securities) for which it shall not previously have been exercised, and the Company shall promptly notify the Holder of the number of Shares (or such other securities)
issued upon such exercise to the Holder and Holder shall be deemed to have restated each of the representations and warranties in Section 4 of the Warrant as the date thereof. 

(d) Upon the closing of any Acquisition other than a Cash/Public Acquisition defined above, the acquiring, surviving or successor entity
shall assume the obligations of this Warrant, and this Warrant shall thereafter be exercisable for the same securities and/or other property as would have been paid for the Shares issuable upon exercise of the unexercised portion of this Warrant as
if such Shares were outstanding on and as of the closing of such Acquisition, subject to further adjustment from time to time in accordance with the provisions of this Warrant. 

  
 3 








 (e) As used in this Warrant, “Marketable Securities” means
securities meeting all of the following requirements: (i) the issuer thereof is then subject to the reporting requirements of Section 13 or Section 15(d) of the Securities Exchange Act of 1934, as amended (the “Exchange
Act”), and is then current in its filing of all required reports and other information under the Act and the Exchange Act; (ii) the class and series of shares or other security of the issuer that would be received by Holder in
connection with the Acquisition were Holder to exercise this Warrant on or prior to the closing thereof is then traded in Trading Market, and (iii) Holder would be able to publicly re-sell, within six (6) months following the closing of
such Acquisition, all of the issuer’s shares and/or other securities that would be received by Holder in such Acquisition were Holder to exercise this Warrant in full on or prior to the closing of such Acquisition. 

SECTION 2. ADJUSTMENTS TO THE SHARES AND WARRANT PRICE. 
 2.1 Stock Dividends, Splits, Etc. If the Company declares or pays a dividend or distribution on the outstanding shares of the Class payable in common stock or other securities or property (other
than cash), then upon exercise of this Warrant, for each Share acquired, Holder shall receive, without additional cost to Holder, the total number and kind of securities and property which Holder would have received had Holder owned the Shares of
record as of the date the dividend or distribution occurred. If the Company subdivides the outstanding shares of the Class by reclassification or otherwise into a greater number of shares, the number of Shares purchasable hereunder shall be
proportionately increased and the Warrant Price shall be proportionately decreased. If the outstanding shares of the Class are combined or consolidated, by reclassification or otherwise, into a lesser number of shares, the Warrant Price shall be
proportionately increased and the number of Shares shall be proportionately decreased. 
 2.2 Reclassification, Exchange,
Combinations or Substitution. Upon any event whereby all of the outstanding shares of the Class are reclassified, exchanged, combined, substituted, or replaced for, into, with or by Company securities of a different class and/or series, then
from and after the consummation of such event, this Warrant will be exercisable for the number, class and series of Company securities that Holder would have received had the Shares been outstanding on and as of the consummation of such event, and
subject to further adjustment thereafter from time to time in accordance with the provisions of this Warrant. The provisions of this Section 2.2 shall similarly apply to successive reclassifications, exchanges, combinations substitutions,
replacements or other similar events. 
 2.3 Conversion of Preferred Stock. If the Class is a class and series of the
Company’s convertible preferred stock, in the event that all outstanding shares of the Class are converted, automatically or by action of the holders thereof, into common stock pursuant to the provisions of the Company’s Certificate of
Incorporation, including, without limitation, in connection with the Company’s initial, underwritten public offering and sale of its common stock pursuant to an effective registration statement under the Act (the “IPO”),
then from and after the date on which all outstanding shares of the Class have been so converted, this Warrant shall be exercisable for such number of shares of common stock into which the Shares would have been converted had the Shares been
outstanding on the date of such conversion, and the Warrant Price shall equal the Warrant Price in effect as of immediately prior to such conversion divided by the number of shares of common stock into which one Share would have been converted, all
subject to further adjustment thereafter from time to time in accordance with the provisions of this Warrant. 

  
 4 








 2.4 Adjustments for Diluting Issuances. Without duplication of any adjustment
otherwise provided for in this Section 2, the number of shares of common stock issuable upon conversion of the Shares shall be subject to anti-dilution adjustment from time to time in the manner set forth in the Company’s Articles or
Certificate of Incorporation as if the Shares were issued and outstanding on and as of the date of any such required adjustment. 
 2.5 No Fractional Share. No fractional Share shall be issuable upon exercise of this Warrant and the number of Shares to be issued shall be rounded down to the nearest whole Share. If a fractional
Share interest arises upon any exercise of the Warrant, the Company shall eliminate such fractional Share interest by paying Holder in cash the amount computed by multiplying the fractional interest by (i) the fair market value (as determined
in accordance with Section 1.3 above) of a full Share, less (ii) the then-effective Warrant Price. 
 2.6
Notice/Certificate as to Adjustments. Upon each adjustment of the Warrant Price, Class and/or number of Shares, the Company, at the Company’s expense, shall notify Holder in writing within a reasonable time setting forth the adjustments
to the Warrant Price, Class and/or number of Shares and facts upon which such adjustment is based. The Company shall, upon written request from Holder, furnish Holder with a certificate of its Chief Financial Officer, including computations of such
adjustment and the Warrant Price, Class and number of Shares in effect upon the date of such adjustment. 
 SECTION 3.
REPRESENTATIONS AND COVENANTS OF THE COMPANY. 
 3.1 Representations and Warranties. The Company represents and
warrants to, and agrees with, the Holder as follows: 
 (a) All Shares which may be issued upon the exercise of this Warrant,
and all securities, if any, issuable upon conversion of the Shares, shall, upon issuance, be duly authorized, validly issued, fully paid and non-assessable, and free of any liens and encumbrances except for restrictions on transfer provided for
herein or under applicable federal and state securities laws. The Company covenants that it shall at all times cause to be reserved and kept available out of its authorized and unissued capital stock such number of shares of the Class, common stock
and other securities as will be sufficient to permit the exercise in full of this Warrant and the conversion of the Shares into common stock or such other securities. 
 (b) The Company’s capitalization table attached hereto as Schedule 1 is true and complete, in all material respects, as of the Issue Date. 

3.2 Notice of Certain Events. If the Company proposes at any time to: 

(a) declare any dividend or distribution upon the outstanding shares of the Class or common stock, whether in cash, property, stock, or
other securities and whether or not a regular cash dividend; 
 (b) offer for subscription or sale pro rata to the holders of
the outstanding shares of the Class any additional shares of any class or series of the Company’s stock (other than pursuant to contractual pre-emptive rights); 

  
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 (c) effect any reclassification, exchange, combination, substitution, reorganization or
recapitalization of the outstanding shares of the Class; 
 (d) effect an Acquisition or to liquidate, dissolve or wind up; or

 (e) effect an IPO; 

then, in connection with each such event, the Company shall give Holder: 

(1) at least seven (7) Business Days prior written notice of the date on which a record will be taken for such
dividend, distribution, or subscription rights (and specifying the date on which the holders of outstanding shares of the Class will be entitled thereto) or for determining rights to vote, if any, in respect of the matters referred to in
(a) and (b) above; 
 (2) in the case of the matters referred to in (c) and (d) above at
least seven (7) Business Days prior written notice of the date when the same will take place (and specifying the date on which the holders of outstanding shares of the Class will be entitled to exchange their shares for the securities or other
property deliverable upon the occurrence of such event); and 
 (3) with respect to the IPO, at least seven
(7) Business Days prior written notice of the date on which the Company proposes to file its registration statement in connection therewith. 
 Reference is made to Section 1.6(c) whereby this Warrant will be deemed to be exercised pursuant to Section 1.2 hereof if the Company does not give written notice to Holder of a Cash/Public
Acquisition as required by the terms hereof. Company will also provide information requested by Holder that is reasonably necessary to enable Holder to comply with Holder’s accounting or reporting requirements. 

SECTION 4. REPRESENTATIONS, WARRANTIES OF THE HOLDER. 
 The Holder represents and warrants to the Company as follows: 
 4.1 Purchase for
Own Account. This Warrant and the securities to be acquired upon exercise of this Warrant by Holder are being acquired for investment for Holder’s account, not as a nominee or agent, and not with a view to the public resale or distribution
within the meaning of the Act. Holder also represents that it has not been formed for the specific purpose of acquiring this Warrant or the Shares. 
 4.2 Disclosure of Information. Holder is aware of the Company’s business affairs and financial condition and has received or has had full access to all the information it considers necessary
or appropriate to make an informed investment decision with respect to the acquisition of this Warrant and its underlying securities. Holder further has had an opportunity to ask questions and receive answers from the Company regarding the terms and
conditions of the offering of this Warrant and its underlying securities and to obtain additional information (to the extent the Company possessed such information or could acquire it without unreasonable effort or expense) necessary to verify any
information furnished to Holder or to which Holder has access. 

  
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 4.3 Investment Experience. Holder understands that the purchase of this Warrant and
its underlying securities involves substantial risk. Holder has experience as an investor in securities of companies in the development stage and acknowledges that Holder can bear the economic risk of such Holder’s investment in this Warrant
and its underlying securities and has such knowledge and experience in financial or business matters that Holder is capable of evaluating the merits and risks of its investment in this Warrant and its underlying securities and/or has a preexisting
personal or business relationship with the Company and certain of its officers, directors or controlling persons of a nature and duration that enables Holder to be aware of the character, business acumen and financial circumstances of such persons.

 4.4 Accredited Investor Status. Holder is an “accredited investor” within the meaning of Regulation D
promulgated under the Act. 
 4.5 The Act. Holder understands that this Warrant and the Shares issuable upon exercise
hereof have not been registered under the Act in reliance upon a specific exemption therefrom, which exemption depends upon, among other things, the bona fide nature of the Holder’s investment intent as expressed herein. Holder understands that
this Warrant and the Shares issued upon any exercise hereof must be held indefinitely unless subsequently registered under the Act and qualified under applicable state securities laws, or unless exemption from such registration and qualification are
otherwise available. Holder is aware of the provisions of Rule 144 promulgated under the Act. 
 4.6 No Voting Rights.
Holder, as a Holder of this Warrant, will not have any voting rights until the exercise of this Warrant. 
 SECTION 5.
REGISTRATION RIGHTS. 
 5.1 Piggy Back Registration Rights. Except as otherwise specified in this Warrant, this Warrant
shall not entitle the Holder to any rights of a holder of Common Stock in the Company until such time as this Warrant is Exercised or Exchanged. Subject to the Company’s ability to secure the requisite consents specified in Section 5.2
below, the Company hereby grants the following registration rights to Holder. If during the term of this Warrant the Company proposes to file a registration statement under the Securities Act with respect to an offering for its own account of any
class of its equity securities (other than a registration statement on Form S-8 (or any successor form) or any other registration statement relating solely to employee benefit plans or filed in connection with an exchange offer, a transaction to
which Rule 145 (or any successor provision) under the Securities Act applies or an offering of securities solely to the Company’s existing shareholders), then the Company shall in each case give written notice of such proposed filing to Holder
as soon as practicable (but no later than 20 business days) before the anticipated filing date, and such notice shall offer Holder the opportunity to register such number of shares of Warrant Stock as Holder may request. Holder shall advise the
Company in writing within 10 business days after the date on which the Company’s notice is so given, setting forth the number of shares of Warrant Stock for which registration is requested. If the Company’s offering is to be an
underwritten offering, the 

  
 7 








 
Company shall, subject to the further provisions of this Agreement, use its reasonable best efforts to cause the managing underwriter or underwriters to permit the Holders of the Warrant Stock
requested to be included in the registration for such offering to include such Warrant Stock in such offering on the same terms and conditions as any similar securities of the Company included therein, subject to Holder’s execution of an
underwriting agreement with the managing underwriter or underwriters selected by the Company in the same manner as other holders participating in the registration. In connection with any such offering, the Company will (i) include only such
information relating to the Holder and the sale of Holder’s securities as Holder shall specifically permit and (ii) indemnify the Holder against liabilities, losses and damages that Holder may incur in connection with the offering,
including those relating to the applicable securities laws, and any breach by the Company of this Warrant. 
 5.2 Prior
Registration Rights Agreement. Holder acknowledges that the Company is party to that certain Registration Rights Agreement dated as of March 16, 2009 among the Company and certain holders of its Common Stock and that such Registration
Rights Agreement prohibits the Company from granting additional registration rights without the consent of the stockholders who are parties to such Registration Rights Agreement. The Company shall use its best efforts to procure for the benefit of
Holder the registration rights set forth in Section 5.1 hereof. 
 SECTION 6. MISCELLANEOUS. 

6.1 Term and Automatic Conversion Upon Expiration. 
 (a) Term. Subject to the provisions of Section 1.6 above, this Warrant is exercisable in whole or in part at any time and from time to time on or before 6:00 PM, Pacific time, on the
Expiration Date and shall be void thereafter. 
 (b) Automatic Cashless Exercise upon Expiration. In the event that, upon
the Expiration Date, the fair market value of one Share (or other security issuable upon the exercise hereof) as determined in accordance with Section 1.3 above is greater than the Warrant Price in effect on such date, then this Warrant shall
automatically be deemed on and as of such date to be exercised pursuant to Section 1.2 above as to all Shares (or such other securities) for which it shall not previously have been exercised, and the Company shall, within a reasonable time,
deliver a certificate representing the Shares (or such other securities) issued upon such exercise to Holder. 
 6.2
Legends. The Shares (and the securities issuable, directly or indirectly, upon conversion of the Shares, if any) shall be imprinted with a legend in substantially the following form: 

THE SHARES EVIDENCED BY THIS CERTIFICATE HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE
“ACT”), OR THE SECURITIES LAWS OF ANY STATE AND, EXCEPT AS SET FORTH IN THAT CERTAIN WARRANT TO PURCHASE STOCK ISSUED BY THE ISSUER TO SILICON VALLEY BANK DATED DECEMBER 27, 2011, MAY NOT


  
 8 








 
BE OFFERED, SOLD, PLEDGED OR OTHERWISE TRANSFERRED UNLESS AND UNTIL REGISTERED UNDER SAID ACT AND LAWS OR IN FORM AND SUBSTANCE SATISFACTORY TO THE ISSUER, SUCH OFFER, SALE, PLEDGE OR OTHER
TRANSFER IS EXEMPT FROM SUCH REGISTRATION. 
 6.3 Compliance with Securities Laws on Transfer. This Warrant and the
Shares issuable upon exercise of this Warrant (and the securities issuable, directly or indirectly, upon conversion of the Shares, if any) may not be transferred or assigned in whole or in part except in compliance with applicable federal and state
securities laws by the transferor and the transferee (including, without limitation, the delivery of investment representation letters and legal opinions reasonably satisfactory to the Company, as reasonably requested by the Company). The Company
shall not require Holder to provide an opinion of counsel if the transfer is to SVB Financial Group (Silicon Valley Bank’s parent company) or any other affiliate of Holder, provided that any such transferee is an “accredited investor”
as defined in Regulation D promulgated under the Act. Additionally, the Company shall also not require an opinion of counsel if the proposed transfer is a sale pursuant to Rule 144 and there is no material question as to the availability of Rule 144
promulgated under the Act. 
 6.4 Transfer Procedure. After receipt by Silicon Valley Bank of the executed Warrant,
Silicon Valley Bank will transfer all of this Warrant to its parent company, SVB Financial Group. By its acceptance of this Warrant, SVB Financial Group hereby makes to the Company each of the representations and warranties set forth in
Section 4 hereof and agrees to be bound by all of the terms and conditions of this Warrant as if the original Holder hereof. Subject to the provisions of Section 6.3 and upon providing the Company with written notice, SVB Financial Group
and any subsequent Holder may transfer all or part of this Warrant or the Shares issuable upon exercise of this Warrant (or the securities issuable directly or indirectly, upon conversion of the Shares, if any) to any transferee, provided, however,
in connection with any such transfer, SVB Financial Group or any subsequent Holder will give the Company notice of the portion of the Warrant being transferred with the name, address and taxpayer identification number of the transferee and Holder
will surrender this Warrant to the Company for reissuance to the transferee(s) (and Holder if applicable); and provided further, that any subsequent transferee other than SVB Financial Group shall agree in writing with the Company to be bound by all
of the terms and conditions of this Warrant. Notwithstanding any contrary provision herein, at all times prior to the IPO, Holder may not, without the Company’s prior written consent, transfer this Warrant or any portion hereof, or any Shares
issued upon any exercise hereof, or any shares or other securities issued upon any conversion of any Shares issued upon any exercise hereof, to any person or entity who directly competes with the Company, except in connection with an Acquisition of
the Company by such a direct competitor. 
 6.5 Notices. All notices and other communications
hereunder from the Company to the Holder, or vice versa, shall be deemed delivered and effective (i) when given personally, (ii) on the third (3rd) Business Day after being mailed by first-class registered or certified mail, postage prepaid, (iii) upon
actual receipt if given by facsimile or electronic mail and such receipt is confirmed in writing by the recipient, or (iv) on the first Business Day following delivery to a reliable overnight courier service, courier fee prepaid, in any case at
such 

  
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address as may have been furnished to the Company or Holder, as the case may be, in writing by the Company or such Holder from time to time in accordance with the provisions of this
Section 6.5. All notices to Holder shall be addressed as follows until the Company receives notice of a change of address in connection with a transfer or otherwise: 
 SVB Financial Group 
 Attn: Treasury Department 

3003 Tasman Drive, HA 200 
 Santa Clara, CA 95054 
 Telephone: 408-654-7400 

Facsimile: 408-496-2405 
 Email address: warradmi@svb.com 
 Notice to the Company shall be addressed as follows until
Holder receives notice of a change in address: 
 Cardiovascular Systems, Inc. 

Attn: Chief Financial Officer 
 651 Campus Drive 
 St. Paul, Minnesota 55112-3495 

Telephone: (651) 259-1600 
 Facsimile: (651) 259-1696 
 Email address: lbetterley@csi360.com 

6.6 Waiver. This Warrant and any term hereof may be changed, waived, discharged or terminated (either generally or in a particular
instance and either retroactively or prospectively) only by an instrument in writing signed by the party against which enforcement of such change, waiver, discharge or termination is sought. 

6.7 Attorney’s Fees. In the event of any dispute between the parties concerning the terms and provisions of this Warrant, the
party prevailing in such dispute shall be entitled to collect from the other party all costs incurred in such dispute, including reasonable attorneys’ fees. 
 6.8 Counterparts; Facsimile/Electronic Signatures. This Warrant may be executed in counterparts, all of which together shall constitute one and the same agreement. Any signature page delivered
electronically or by facsimile shall be binding to the same extent as an original signature page with regards to any agreement subject to the terms hereof or any amendment thereto. 

6.9 Governing Law. This Warrant shall be governed by and construed in accordance with the laws of the State of California, without
giving effect to its principles regarding conflicts of law. 
 6.10 Headings. The headings in this Warrant are for
purposes of reference only and shall not limit or otherwise affect the meaning of any provision of this Warrant. 

  
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 6.11 Business Days. “Business Day” is any day that is not a
Saturday, Sunday or a day on which Silicon Valley Bank is closed. 
 [Remainder of page left blank intentionally] 

[Signature page follows] 

  
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 IN WITNESS WHEREOF, the parties have caused this Warrant to Purchase Stock to be executed by
their duly authorized representatives effective as of the Issue Date written above. 
  

			
	“COMPANY”
	
	 CARDIOVASCULAR SYSTEMS, INC.,
 a Delaware corporation

		
	By:	 	/s/ Laurence L. Betterley
	Name:	 	Laurence L. Betterley
		 	(Print)
	Title:	 	Chief Financial Officer
	
	“HOLDER”
	
	SILICON VALLEY BANK
		
	By:	 	/s/ Adam Glick
	Name:	 	Adam Glick
		 	(Print)
	Title:	 	Relationship Manager


  
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 APPENDIX 1 
 NOTICE OF EXERCISE 
 1. The undersigned Holder hereby exercises its right
purchase             shares of the Common Stock of CARDIOVASCULAR SYSTEMS, INC., a Delaware corporation (the “Company”) in accordance with the attached Warrant To
Purchase Stock, and tenders payment of the aggregate Warrant Price for such shares as follows: 
  

	 	 ̈	check in the amount of $             payable to order of the Company enclosed herewith


  

	 	 ̈	Wire transfer of immediately available funds to the Company’s account 


 

	 	 ̈	Cashless Exercise pursuant to Section 1.2 of the Warrant 

  

	 	 ̈	Other [Describe]
                             


2. Please issue a certificate or certificates representing the Shares in the name specified below: 

 

	
	Holder’s Name
	
	 
	
	 
	(Address)


 3. By its execution below and for the benefit of the Company, Holder hereby restates each of the
representations and warranties in Section 4 of the Warrant to Purchase Stock as of the date hereof. 
  

			
	HOLDER:	 	
		
	 	 	 
		
	By:	 	 
	Name:	 	 
	Title:	 	 
		
	(Date):	 	 



  
 Appendix 1









 SCHEDULE 1 
 Company Capitalization Table 6/20/2012 
  

									
	 	  	Total	 	  	 	 
	 	  	Shares	 	  	%	 
	 Common Stock
	  	 	19,977,693	  	  	 	80.5	% 
			
	 Options Outstanding
	  	 	2,398,695	  	  	 	9.7	% 
	 Warrants Outstanding
	  	 	2,438,784	  	  	 	9.8	% 
		  	  
	  
	 	  	  
	  
	 
	 Total Options and Warrants
	  	 	4,837,479	  	  	 	19.5	% 
		  	  
	  
	 	  	  
	  
	 
	 Total All Securities
	  	 	24,815,172	  	  	 	100.0	% 
		  	  
	  
	 	  	  
	  
	 

 There are 604,126 remaining shares available for grant under the 2007 Equity Plan. 

There are 90,709 available shares for purchase through the Employer Stock purchase plan. 
 The Company has $5.0MM in outstanding loans under a convertible debt facility with Partners for Growth III, L.P. (PFG). At any time prior to the maturity date, PFG may at its option convert any of the
outstanding loans into shares of the Company’s common stock at the applicable conversion price. In aggregate, the outstanding loans can be converted into 363,794 shares of the Company’s common stock. 

DETAIL 
  

																	
	 	  	Loan Bal	 	  	Con price	 	  	Shares	 	  	 	 
	 $3.5M Note (conversion price $13.64 per share)
	  	 	3,500,000	  	  	$	13.64	  	  	 	256,598	  	  	$	3,500,000.00	  
					
	 $0.5M Note ( conversion price $15.30 per share)
	  	 	500,000	  	  	$	15.30	  	  	 	32,680	  	  	$	500,000.00	  
					
	 $1.0M Note ( conversion price $13.42 per share)
	  	 	1,000,000	  	  	$	13.42	  	  	 	74,516	  	  	$	1,000,000.00	  
		  				  				  	  
	  
	 	  	  
	  
	 
		  	 	5,000,000	  	  				  	 	363,794	  	  	$	5,000,000.00	  
	 Weighted Avg
	  				  				  	$	13.74	  	  			
		  				  				  	  
	  
	 	  			


  
 Schedule 1