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 *

Leung Sunny H 		2. Issuer Name and Ticker or Trading Symbol

SIMPSON MANUFACTURING CO INC /CA/ [ SSD ] 		5. Relationship of Reporting Person(s) to Issuer (Check all applicable)

_____ Director                      _____ 10% Owner
__ X __ Officer (give title below)      _____ Other (specify below)
Vice President
(Last)          (First)          (Middle)

5956 W. LAS POSITAS BLVD. 		3. Date of Earliest Transaction (MM/DD/YYYY)

2/4/2017
(Street)

PLEASANTON, CA 94588
(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 (RSUs awarded February 4, 2017)   2/4/2017     A    967   A $43.42   967   (1) D    
Common Stock (PRSUs awarded February 4, 2017)   2/4/2017     A    1801   A $43.42   1801   (2) D    
Common Stock (RSUs awarded February 1, 2016)                  967   (3) D    
Common Stock (RSUs awarded February 2, 2015)                  967   (4) D    
Common Stock (RSUs awarded February 3, 2014)                  1447   (5) D    
Common Stock (RSUs awarded February 6, 2013)                  943   (6) D    
Common Stock                  870   (7) I   By Trust  

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)  Amount includes 967 shares of restricted stock units (RSUs) awarded on February 4, 2017. RSUs vest one fourth on February 15, 2017, February 15, 2018, February 15, 2019, and February 15, 2020. The 967 shares are net of the number of shares expected to be withheld to cover the estimated income taxes due on vesting.
( 2)  Amount includes 1,801 shares of restricted stock units (RSUs) awarded on February 4, 2017. RSUs vest fully on February 15, 2020, subject to the Company's performance on revenue growth (50%) and return on invested capital (50%) versus the Company's peer group median. The 1,801 shares assume that the number of shares that vest are based on targeted performance and are net of the number of shares expected to be withheld to cover the estimated income taxes due on vesting.
( 3)  Amount includes 967 shares of restricted stock units (RSUs) awarded on February 1, 2016. RSUs vest one fourth on each of the award date and the first, second and third anniversaries of the award date. The 967 shares are net of the number of shares expected to be withheld to cover the estimated income taxes due on vesting.
( 4)  Amount includes 967 shares of restricted stock units (RSUs) awarded on February 2, 2015. RSUs vest one fourth on each of the award date and the first, second and third anniversaries of the award date. The 967 shares are net of the number of shares expected to be withheld to cover the estimated income taxes due on vesting.
( 5)  Amount includes 1,447 shares of restricted stock units (RSUs) awarded on February 3, 2014. RSUs vest one fourth on each of the award date and the first, second and third anniversaries of the award date. The 1,447 shares are net of the number of shares expected to be withheld to cover the estimated income taxes due on vesting.
( 6)  Amount includes 943 shares of restricted stock units (RSUs) awarded on February 6, 2013. RSUs vest one fourth on each of the award date and the first, second and third anniversaries of the award date. The 943 shares are net of the number of shares expected to be withheld to cover the estimated income taxes due on vesting.
( 7)  The shares are owned by the Simpson Manufacturing Co., Inc. 401(K) Profit Sharing Plan (the "Plan") of which the reporting person is a participant. The Plan qualifies under sections 401(a)(26) and 410 of the Internal Revenue Code.

Reporting Owners
Reporting Owner Name / Address
Relationships
Director 10% Owner Officer Other
Leung Sunny H
5956 W. LAS POSITAS BLVD.
PLEASANTON, CA 94588

Vice President

Signatures
/s/SUNNY H. LEUNG 2/7/2017
** 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 4(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.
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