UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G
Under the Securities Exchange Act of 1934
(Amendment No. 1)

KRONOS BIO, INC.
(Name of Issuer)
 
Common Stock
(Title of Class of Securities)
 
50107A104
(CUSIP Number)
 
December 31, 2021
(Date of Event Which Requires Filing of this Statement)
 
Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

Rule 13d-1(b)

Rule 13d-1(c)

Rule 13d-1(d)

* The remainder of this cover page shall be filled out for a reporting person's initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter the disclosures provided in a prior cover page.

The information required in the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).



CUSIP No. 50107A104
13G
Page 2 of 7 Pages
1
NAMES OF REPORTING PERSONS
 
 
Arie Belldegrun, M.D.
 
 
 
 
2
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
   
(a)☐
   
(b)
 
 
3
SEC USE ONLY
 
 
 
 
 
 
 
4
CITIZENSHIP OR PLACE OF ORGANIZATION
 
 
United States of America and Israel
 
 
 
 
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH
5
SOLE VOTING POWER
 
 
0
 
 
 
 
6
SHARED VOTING POWER
 
 
3,444,889 Shares (1)
 
 
 
 
7
SOLE DISPOSITIVE POWER
 
 
0
 
 
 
 
8
SHARED DISPOSITIVE POWER
 
 
3,444,889 Shares (1)
 
 
 
 
9
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 
 
3,444,889 Shares
 
 
 
 
10
CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)
 
 
 
 
 
 
11
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
 
 
6.1% (2)
 
 
 
 
12
TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
 
 
IN
 
 
 
 
(1)
Includes (a) 679,575 shares of common stock beneficially owned by Bellco Legacy II Trust, of which Dr. Belldegrun serves as trustee and his wife, Rebecka Belldegrun, is the beneficiary and (b) 2,765,314 shares of common stock beneficially owned by Vida Ventures LLC (Vida), of which VV Manager LLC is the manager, of which Dr. Belldegrun is a Senior Managing Director.  Dr. Belldegrun disclaims beneficial ownership of the shares held by Vida, except to the extent of any pecuniary interest therein.
 
(2)
This percentage is calculated based on 56,347,286 shares of common stock outstanding as of November 2, 2021, as reported in the Issuer’s Quarterly Report on Form 10-Q filed on November 9, 2021.
 

CUSIP No. 50107A104
13G
Page 3 of 7 Pages
1
NAMES OF REPORTING PERSONS
 
 
Bellco Legacy II Trust
 
 
 
 
2
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
   
(a)☐
   
(b)
 
 
3
SEC USE ONLY
 
 
 
 
 
 
 
4
CITIZENSHIP OR PLACE OF ORGANIZATION
 
 
Delaware
 
 
 
 
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH
5
SOLE VOTING POWER
 
 
679,575 Shares
 
 
 
 
6
SHARED VOTING POWER
 
 
0 Shares
 
 
 
 
7
SOLE DISPOSITIVE POWER
 
 
679,575 Shares
 
 
 
 
8
SHARED DISPOSITIVE POWER
 
 
0 Shares
 
 
 
 
9
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 
 
679,575 Shares
 
 
 
 
10
CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)
 
 
 
 
 
 
11
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
 
 
1.2% (1)
 
 
 
 
12
TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
 
 
OO
 
 
 
 
(1)
This percentage is calculated based on 56,347,286 shares of common stock outstanding as of November 2, 2021, as reported in the Issuer’s Quarterly Report on Form 10-Q filed on November 9, 2021.
 

CUSIP No. 50107A104
13G
Page 4 of 7 Pages
1
NAMES OF REPORTING PERSONS
 
 
Vida Ventures LLC
 
 
 
 
2
CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
   
(a)☐
   
(b)
 
 
3
SEC USE ONLY
 
 
 
 
 
 
 
4
CITIZENSHIP OR PLACE OF ORGANIZATION
 
 
Nevada
 
 
 
 
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH
5
SOLE VOTING POWER
 
 
0 Shares
 
 
 
 
6
SHARED VOTING POWER
 
 
2,765,314 Shares
 
 
 
 
7
SOLE DISPOSITIVE POWER
 
 
0 Shares
 
 
 
 
8
SHARED DISPOSITIVE POWER
 
 
2,765,314 Shares
 
 
 
 
9
AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
 
 
2,765,314 Shares
 
 
 
 
10
CHECK IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES (SEE INSTRUCTIONS)
 
 
 
 
 
 
11
PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)
 
 
4.9% (1)
 
 
 
 
12
TYPE OF REPORTING PERSON (SEE INSTRUCTIONS)
 
 
OO
 
 
 
 
 
(1)
This percentage is calculated based on 56,347,286 shares of common stock outstanding as of November 2, 2021, as reported in the Issuer’s Quarterly Report on Form 10-Q filed on November 9, 2021.
 

CUSIP No. 50107A104
13G
Page 5 of 7 Pages
Item 1(a).
Name of Issuer:
Kronos Bio, Inc.

Item 1(b).
Address of Issuer’s Principal Executive Offices:
1300 So. El Camino Real, Suite 300
San Mateo, California 94402


Item 2(a).
Names of Persons Filing:

Arie Belldegrun, M.D.
Bellco Legacy II Trust
Vida Ventures LLC

Item 2(b).
Address of Principal Business Office, or, if none, Residence:

The address of Arie Belldegrun, M.D. is:
811 Strada Vecchia Road, Los Angeles, CA  90077

The address of Bellco Legacy II Trust is:
2049 Century Park East, Suite 1940, Los Angeles, CA  90067

The address of Vida Ventures LLC is:
40 Broad Street, #201, Boston, MA  02109

Item 2(c).
Citizenship:
 
Arie Belldegrun:  USA and Israel
Bellco Legacy II Trust:  Delaware
Vida Ventures LLC:  Nevada


Item 2(d).
Title of Class of Securities:
Common Stock


Item 2(e).
CUSIP No.:
50107A104

Item 3.
Not Applicable.


CUSIP No. 50107A104
13G
Page 6 of 7 Pages
Item 4.
Ownership

The information requested hereinafter is set forth in items 5 through 9 and 11 of the cover page to this Schedule 13G.  Ownership is stated as of December 31, 2021.  This percentage is calculated based on 56,347,286 shares of common stock outstanding as of November 2, 2021, as reported in the Issuer’s Quarterly Report on Form 10-Q filed on November 9, 2021.

Reporting Person
 
Shares Held
Directly
   
Sole
Voting
Power
   
Shared
Voting
Power
   
Sole
Dispositive
Power
   
Shared
Dispositive
Power
   
Beneficial
Ownership
   
Percentage
of Class(1)
 
Arie Belldegrun
   
0
     
0
     
3,444,889
     
0
     
3,444,889
     
3,444,889
     
6.1
%
                                                         
Bellco Legacy II Trust
   
679,575
     
679,575
     
0
     
679,575
     
0
     
679,575
     
1.2
%
                                                         
Vida Ventures LLC
   
2,765,314
     
0
     
2,765,314
     
0
     
2,765,314
     
2,765,314
     
4.9
%
                                                         
(1) This percentage is calculated based on 56,347,286 shares of common stock outstanding as of November 2, 2021, as reported in the Issuer’s Quarterly Report on Form 10-Q filed on November 9, 2021.

Item 5.
Ownership of Five Percent or Less of a Class.
If this statement is being filed to report the fact that as of the date hereof, the Reporting Persons have ceased to be the beneficial owner of more than five percent of the class of securities, check the following:

Item 6.
Ownership of More than Five Percent on Behalf of Another Person
Not applicable

Item 7.
Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on By the Parent Holding Company or Control Person
Not applicable

Item 8.
Identification and Classification of Members of the Group
Not applicable

Item 9.
Notice of Dissolution of Group
Not applicable


CUSIP No. 50107A104
13G
Page 7 of 7 Pages
Item 10.
Certifications
By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect.

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

 Dated: February 17, 2022  
   
 
/s/ Arie Belldegrun
 
Arie Belldegrun, M.D.

 
Bellco Legacy II Trust
     
 
By:
 /s/ Arie Belldegrun
 
Name:
Arie Belldegrun, Trustee

 
Vida Ventures LLC
  By: VV Manager LLC, its Manager
     
 
By:
 /s/ Arie Belldegrun
 
Name:
Arie Belldegrun, Senior Managing Director




Exhibit 99.1
 
JOINT FILING AGREEMENT
 
In accordance with Rule 13d-1(k) promulgated under the Securities Exchange Act of 1934, as amended, the undersigned hereby agree to the joint filing with all other Reporting Persons (as such term is defined in the Schedule 13G referred to below) on behalf of each of them of a statement on Schedule 13G (including amendments thereto) with respect to the common stock of Kronos Bio, Inc., a Delaware corporation, and that this Agreement may be included as an Exhibit to such joint filing. This Agreement may be executed in any number of counterparts all of which, taken together, shall constitute one and the same instrument.
 
 Dated: February 17, 2021  
   
 
     /s/ Arie Belldegrun
 
Arie Belldegrun, M.D.
 
 
Bellco Legacy II Trust
     
 
By:
 /s/ Arie Belldegrun
 
Name:
Arie Belldegrun, Trustee

 
Vida Ventures LLC
   By:
 VV Manager LLC, its Manager
     
 
By:
 /s/ Arie Belldegrun
 
Name:
Arie Belldegrun, Senior Managing Director