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 ^*

Aisling Capital IV, LP

2. Date of Event Requiring Statement (MM/DD/YYYY) 1/23/2019

3. Issuer Name and Ticker or Trading Symbol

SUNESIS PHARMACEUTICALS INC [SNSS]

(Last) (First) (Middle)

C/O AISLING CAPITAL LLC, 888 SEVENTH AVENUE, 12TH FLOOR

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

_____ Director ___ X ___ 10% Owner
_____ Officer (give title below) _____ Other (specify below)

(Street)

NEW YORK, 10106

(City) (State) (Zip)

5. If Amendment, Date Original Filed (MM/DD/YYYY)

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

___ Form filed by One Reporting Person
_ X _ 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)
Common Stock	7600000	I	See footnote ⁽¹⁾

*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)

Explanation of Responses:

(1)

Shares held by Aisling Capital IV, LP ("Aisling"). Aisling Capital Partners IV, LP ("Aisling GP"), is the general partner of Aisling. Aisling Capital Partners IV LLC ("Aisling Partners"), is the general partner of Aisling GP. The individual managing members ("the Aisling Managers"), of Aisling Partners are Andrew Schiff, M.D. and Steve Elms. By virtue of these relationships, Aisling GP, Aisling Partners and the Aisling Managers may be deemed to have voting and investment power over the shares held by Aisling. Each of the reporting persons, other than Aisling, disclaims beneficial ownership of the shares held by Aisling, except to the extent of any pecuniary interest therein, if any.

Reporting Owners
Reporting Owner Name / Address	Relationships
Reporting Owner Name / Address	Director	10% Owner	Officer	Other
Aisling Capital IV, LP C/O AISLING CAPITAL LLC 888 SEVENTH AVENUE, 12TH FLOOR NEW YORK 10106		X
Aisling Capital Partners IV LLC C/O AISLING CAPITAL LLC 888 SEVENTH AVENUE, 12TH FLOOR NEW YORK, NY 10106		X
Aisling Capital Partners IV, LP C/O AISLING CAPITAL LLC 888 SEVENTH AVENUE, 12TH FLOOR NEW YORK, NY 10106		X
SCHIFF ANDREW N C/O AISLING CAPITAL LLC 888 SEVENTH AVENUE, 12TH FLOOR NEW YORK, NY 10106		X
ELMS STEVE C/O AISLING CAPITAL LLC 888 SEVENTH AVENUE, 12TH FLOOR NEW YORK, NY 10106		X

Signatures
/s/ Aisling Capital IV, LP by Andrew N. Schiff		1/24/2019
^** Signature of Reporting Person		Date
/s/ Aisling Capital Partners IV LLC by Andrew N. Schiff		1/24/2019
^** Signature of Reporting Person		Date
/s/ Aisling Capital Partners IV, LP by Andrew N. Schiff		1/24/2019
^** Signature of Reporting Person		Date
/s/ Andrew N. Schiff		1/24/2019
^** Signature of Reporting Person		Date
/s/ Steve Elms		1/24/2019
^** 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.