FORM 4
[ ] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).         
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES
                                                                                  
OMB APPROVAL
OMB Number: 3235-0287
Estimated average burden
hours per response... 0.5
                      
Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940
                      

1. Name and Address of Reporting Person *

Blackey Brent G 		2. Issuer Name and Ticker or Trading Symbol

Cardiovascular Systems Inc [ CSII ] 		5. Relationship of Reporting Person(s) to Issuer (Check all applicable)

__ X __ Director                      _____ 10% Owner
_____ Officer (give title below)      _____ Other (specify below)
(Last)          (First)          (Middle)

1225 OLD HIGHWAY 8 NW 		3. Date of Earliest Transaction (MM/DD/YYYY)

9/12/2017
(Street)

ST. PAUL, MN 55112
(City)        (State)        (Zip)
4. If Amendment, Date Original Filed (MM/DD/YYYY)

 
6. Individual or Joint/Group Filing (Check Applicable Line)

_ X _ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3) 		2. Trans. Date 2A. Deemed Execution Date, if any 3. Trans. Code
(Instr. 8) 		4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5) 		5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4) 		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V Amount (A) or (D) Price
Common Stock   9/12/2017     M    38820   A $7.90   109729   D  
 

Table II - Derivative Securities Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities)
1. Title of Derivate Security
(Instr. 3) 		2. Conversion or Exercise Price of Derivative Security 3. Trans. Date 3A. Deemed Execution Date, if any 4. Trans. Code
(Instr. 8) 		5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5) 		6. Date Exercisable and Expiration Date 7. Title and Amount of Securities Underlying Derivative Security
(Instr. 3 and 4) 		8. Price of Derivative Security
(Instr. 5) 		9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Stock Option (right to buy)   $7.90   9/12/2017     M         38820      (1) 10/8/2017   Common Stock   38820   $0   0   D  
 
Restricted Stock Units     (2)                    (2)   (2) Common Stock   77273   (3)   77273   (3) D  
 
Restricted Stock Units     (4)                  8/15/2019   8/15/2019   Common Stock   2541     2541   D  
 
Restricted Stock Units     (4)                  9/1/2018   9/1/2018   Common Stock   2855     2855   D  
 
Restricted Stock Units     (4)                  9/1/2019   9/1/2019   Common Stock   2095     2095   D  
 
Restricted Stock Units     (5)                    (5)   (5) Common Stock   4029     4029   D  
 

Explanation of Responses:
(1)  Fully exercisable.
(2)  Each restricted stock unit represents the right to receive a payment from CSI equal in value to the market price per share of CSI common stock on the date of payment and shall be payable in cash or shares of Company common stock beginning six months following the termination of each director's board membership.
(3)  Represents the aggregate number of restricted stock units (all previously reported) held by reporting person that are payable in cash or shares of Company common stock beginning six months following the termination of each director's board membership.
(4)  Each restricted stock unit represents the right to receive a payment from CSI equal in value to the market price per share of CSI common stock on the date of payment and shall be payable in cash or shares of Company common stock beginning on the payment date.
(5)  Each restricted stock unit represents the right to receive a payment from CSI equal in value to the market price per share of CSI common stock on the date of payment and shall be payable in cash or shares of Company common stock beginning six months following the termination of each director's board membership; provided, however, that the restricted stock units vest in quarterly amounts of 1,008 shares on September 30, 2017 and 1,007 shares on each of December 31, 2017, March 31, 2018 and June 30, 2018.

Reporting Owners
Reporting Owner Name / Address
Relationships
Director 10% Owner Officer Other
Blackey Brent G
1225 OLD HIGHWAY 8 NW
ST. PAUL, MN 55112 		X



Signatures
/s/ Ashley Brosius as Attorney-in-Fact for Brent G. Blackey pursuant to Power of Attorney previously filed. 9/14/2017
** Signature of Reporting Person Date


Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number.
Cardiovascular Systems (NASDAQ:CSII)
Historical Stock Chart
From Mar 2024 to Apr 2024 Click Here for more Cardiovascular Systems Charts.
Cardiovascular Systems (NASDAQ:CSII)
Historical Stock Chart
From Apr 2023 to Apr 2024 Click Here for more Cardiovascular Systems Charts.