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 Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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(Print or Type Responses)

1. Name and Address of Reporting Person * LEFKOFF KYLE   2. Issuer Name and Ticker or Trading Symbol ARRAY BIOPHARMA INC [ARRY] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) C/O BOULDER VENTURES, 1941 PEARL STREET, SUITE 300 3. Date of Earliest Transaction (Month/Day/Year) 02/06/2019 (Street) BOULDER, CO 80302 4. If Amendment, Date Original Filed(Month/Day/Year) 6. Individual or Joint/Group Filing(Check Applicable Line) _X_ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person (City) (State) (Zip) Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned

1.Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction 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 02/06/2019   M   25,000 A $ 10.47 47,720 D   Common Stock 02/06/2019   S   25,000 D $ 20.5077 (1) 22,720 D   Common Stock 02/06/2019   S   5,000 (2) D $ 20.8241 (3) 25,000 (4) I See footnote Common Stock 02/06/2019   S   5,000 (2) D $ 20.8522 (5) 20,000 (4) I See footnote Common Stock               15,000 (6) I See footnote

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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 3)

2. Conversion or Exercise Price of Derivative Security

3. Transaction Date (Month/Day/Year)

3A. Deemed Execution Date, if any (Month/Day/Year)

4. Transaction 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 (Month/Day/Year)

7. Title and Amount of Underlying Securities (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)

$ 10.47

02/06/2019

M

25,000

(7)

10/26/2027

Common Stock

25,000

$ 0

0

D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
LEFKOFF KYLE C/O BOULDER VENTURES 1941 PEARL STREET, SUITE 300 BOULDER, CO 80302

Signatures

Jason Haddock, attorney-in-fact for Kyle A. Lefkoff		02/08/2019
**Signature of Reporting Person		Date

Explanation of Responses:

*	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).
(1)	The price reported for these shares is the weighted average sale price of transactions made at prices from $20.50 to $20.58. Details of actual prices for shares sold are available from the Reporting Person upon request.
(2)	The sale was made by the Reporting Person as custodian for his son under the Colorado Uniform Gifts to Minors Act.
(3)	The price reported for these shares is the weighted average sale price of transactions made at prices from $20.785 to $20.834. Details of actual prices for shares sold are available from the Reporting Person upon request.
(4)	Comprised of shares of common stock in trust for the benefit of the Reporting Person's minor children.
(5)	The price reported for these shares is the weighted average sale price of transactions made at prices from $20.805 to $20.864. Details of actual prices for shares sold are available from the Reporting Person upon request.
(6)	Comprised of common stock held by BV Partners III Profit Sharing account for the benefit of the Reporting Person.
(7)	The options vested on October 26, 2018.

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