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 * Chevallard Daniel R. 2. Issuer Name and Ticker or Trading Symbol Viracta Therapeutics, Inc. [ VIRX ] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable)_____ Director                    _____ 10% Owner
__X__ Officer (give title below)    _____ Other (specify below)
CFO and COO
(Last)         (First)         (Middle)
C/O VIRACTA THERAPEUTICS, INC., 2533 S COAST HWY 101, SUITE 210
3. Date of Earliest Transaction (MM/DD/YYYY)
5/28/2021
(Street)
CARDIFF, CA 92007
(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  5/28/2021    M    12000  A $0.90  56760  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)  $0.90  5/28/2021    M        12000    (1) 7/30/2029  Common Stock  12000  $0.00  98817  D   

Explanation of Responses:
(1)  Twenty-five percent (25%) of the total shares subject to the Option will vest on the one (1)-year anniversary of July 30, 2019 (the "Vesting Commencement Date") and 1/48th of the total shares subject to the Option will vest each month thereafter on the same day of the month as the Vesting Commencement Date (and if there is no corresponding day, the last day of the month), subject to the reporting person continuing to be a Service Provider in accordance with Viracta Subsidiary, Inc.'s 2016 Equity Incentive Plan (the "Plan") through each such date.

Reporting Owners
Reporting Owner Name / Address
Relationships
Director 10% Owner Officer Other
Chevallard Daniel R.
C/O VIRACTA THERAPEUTICS, INC.
2533 S COAST HWY 101, SUITE 210
CARDIFF, CA 92007


CFO and COO

Signatures
/s/ Michael Mueller, as Attorney-in-Fact 6/1/2021
**Signature of Reporting Person Date
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