Initial Statement of Beneficial Ownership (3)

FORM 3	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES	OMB APPROVAL OMB Number: 3235-0104 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 ^*

Lisicki Robert

2. Date of Event Requiring Statement (MM/DD/YYYY) 6/13/2019

3. Issuer Name and Ticker or Trading Symbol

ARENA PHARMACEUTICALS INC [ARNA]

(Last) (First) (Middle)

C/O ARENA PHARMACEUTICALS, INC., 6154 NANCY RIDGE DRIVE

4. Relationship of Reporting Person(s) to Issuer (Check all applicable)

_____ Director _____ 10% Owner
___ X ___ Officer (give title below) _____ Other (specify below)
EVP, Chief Commercial Officer /

(Street)

SAN DIEGO, CA 92121

(City) (State) (Zip)

5. 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 Beneficially Owned
1.Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)

*Table II - Derivative Securities Beneficially Owned ( e.g.* , puts, calls, warrants, options, convertible securities)**
1. Title of Derivate Security (Instr. 4)	2. Date Exercisable and Expiration Date (MM/DD/YYYY)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
1. Title of Derivate Security (Instr. 4)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	4. Conversion or Exercise Price of Derivative Security		6. Nature of Indirect Beneficial Ownership (Instr. 5)
Employee Stock Option (right to buy)	⁽¹⁾	11/26/2025	Common Stock	175000	$40.95	D
Employee Stock Option (right to buy)	⁽²⁾	1/4/2026	Common Stock	75000	$40.94	D
Employee Performance Restricted Stock Unit	⁽³⁾ ⁽⁴⁾	1/3/2022	Common Stock	12600 ⁽⁴⁾	⁽³⁾	D

Explanation of Responses:
(1)	The options vest over four years, with 25% of the shares subject to the option vesting on November 26, 2019, and the remainder of the shares vesting monthly over the following three years in equal installments (except as otherwise necessary to avoid vesting of a fractional share), and are exercisable once vested.
(2)	The options vest over four years, with 25% of the shares subject to the option vesting on January 4, 2020, and the remainder of the shares vesting monthly over the following three years in equal installments (except as otherwise necessary to avoid vesting of a fractional share), and are exercisable once vested.
(3)	Each Employee Performance Restricted Stock Unit ("PRSU") represents a contingent right to receive shares of Arena's common stock, which shares shall vest, if at all, upon the closing price of Arena's common stock (the "Closing Price") reaching certain thresholds during the three-year performance period from January 4, 2019 through January 3, 2022 (the "Performance Period") and satisfaction of a continuing service requirement.
(4)	The number of shares that may vest is based on the Closing Price during the Performance Period. If, on 5 consecutive or 10 non-consecutive trading days during the Performance Period, the Closing Price equals or exceeds $60, $67.50 or $75, and the reporting person thereafter satisfies a continuing service requirement, the PRSUs are deemed vested at 50%, 100% or 200%, respectively, of the target amount reported in Column 3 (subject, in the event of a change of control, to additional vesting in circumstances where the per share transaction consideration falls in between the dollar values listed above), and the reporting person will receive at or following the time of vesting a number of shares equal to the achieved percentage multiplied by the total number of PRSUs. For the avoidance of doubt, shares may be issued following achievement of each price threshold, and the maximum number of shares that may be issued pursuant to the PRSUs equals 200% of the number of PRSUs reported in Column 3.

Reporting Owners
Reporting Owner Name / Address	Relationships
Reporting Owner Name / Address	Director	10% Owner	Officer	Other
Lisicki Robert C/O ARENA PHARMACEUTICALS, INC. 6154 NANCY RIDGE DRIVE SAN DIEGO, CA 92121			EVP, Chief Commercial Officer

Signatures
/s/ Andrew J. Cronauer, as Attorney-in-Fact		6/20/2019
^** 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 5(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.