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
                                                                                  
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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 *

Nelson Mark Joseph 		2. Issuer Name and Ticker or Trading Symbol

BIOLASE, INC [ BIOL ] 		5. Relationship of Reporting Person(s) to Issuer (Check all applicable)

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

C/O 4 CROMWELL 		3. Date of Earliest Transaction (MM/DD/YYYY)

4/18/2017
(Street)

IRVINE, CA 92618
(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

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
Series D Participating Convertible Preferred Stock   (1)   (2) 4/18/2017     P      192         (2)   (2) Common Stock   19200   $124.00   192   D    
Warrants (right to buy)   (1) $1.80   4/18/2017     P      9346       10/18/2017   4/18/2022   Common Stock   9346   $0.125   9346   D    

Explanation of Responses:
(1)  These shares of Series D Participating Convertible Preferred Stock ("Preferred Stock") and Warrants were acquired by Mark J. Nelson in a private placement with the Issuer that closed on April 18, 2017 (the "Closing").
(2)  Each share of Preferred Stock will initially be convertible into 100 shares of Common Stock ("Shares"), reflecting a conversion price equal to $1.24 per Share. The conversion of the Preferred Stock will occur automatically upon the Requisite Stockholder Approval (defined and described further in the Securities Purchase Agreement dated April 11, 2017 and filed as Exhibit 99.1 to the Current Report on Form 8-K filed by the Issuer on April 14, 2017), which is expected to occur after the Closing. The Preferred Stock has no expiration date.

Reporting Owners
Reporting Owner Name / Address
Relationships
Director 10% Owner Officer Other
Nelson Mark Joseph
C/O 4 CROMWELL
IRVINE, CA 92618

SVP & Chief Financial Officer

Signatures
/s/ Michael C. Carroll, attorney-in-fact for Mark J. Nelson 4/19/2017
** 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.
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