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 * TAN LIP BU 2. Issuer Name and Ticker or Trading Symbol CADENCE DESIGN SYSTEMS INC [ CDNS ] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable)__X__ Director                    _____ 10% Owner
__X__ Officer (give title below)    _____ Other (specify below)
CEO
(Last)         (First)         (Middle)
2655 SEELY AVENUE, BLDG. 5
3. Date of Earliest Transaction (MM/DD/YYYY)
11/18/2019
(Street)
SAN JOSE, CA 95134
(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  11/18/2019    S    50000 (1) D $67.27  1129227  I  Held by Trust 2 (2)
Common Stock                 848272  D   
Common Stock                 15000  I  Held by Trust 1 (3)
Common Stock                 7000  I  Held by Trust 3 (4)
Common Stock                 31400  I  Held by IRA (5)

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

Explanation of Responses:
(1)  The transaction reported in this Form 4 was effected pursuant to a Rule 10b5-1 Trading Plan adopted by the Reporting Person.
(2)  Shares held by the Lip-Bu Tan and Ysa Loo Trust dated 2/3/1992.
(3)  Shares held by A&E Investment LLC, the sole member of which is the Lip-Bu Tan and Ysa Loo Trust dated 2/3/1992.
(4)  Shares held by L Tan & N Lee TTEE, Pacven Walden Inc. 401(K) PSPS, FBO Lip-Bu Tan.
(5)  Shares held by IRA FBO Lip-Bu Tan DB Securities Inc. Custodian Rollover Account DTD 5/19/1997.

Reporting Owners
Reporting Owner Name / Address
Relationships
Director 10% Owner Officer Other
TAN LIP BU
2655 SEELY AVENUE, BLDG. 5
SAN JOSE, CA 95134
X
CEO

Signatures
Shirley X. Li, Attorney-in-Fact for Lip-Bu Tan 11/19/2019
**Signature of Reporting Person Date
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