Ownership Submission
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

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
Brogna Salvatore
   2. Issuer Name and Ticker or Trading Symbol
INTUITIVE SURGICAL INC [ISRG] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
EVP & Chief Operating Officer
(Last)
(First)
(Middle)
1020 KIFER ROAD		 3. Date of Earliest Transaction (Month/Day/Year)
03/01/2019
(Street)

SUNNYVALE, CA 94086		 4. If Amendment, Date Original Filed(Month/Day/Year)
 6. Individual or Joint/Group Filing(Check Applicable Line)
_X_ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)		 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction 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 03/01/2019   M(1)   563 A $ 238.9133 5,934 D  
Common Stock 03/01/2019   S(1)   563 D $ 551.7927 5,371 D  
Common Stock 03/01/2019   M(1)   305 A $ 230.9967 5,676 D  
Common Stock 03/01/2019   S(1)   305 D $ 551.7927 5,371 D  
Common Stock 03/01/2019   M(1)   305 A $ 178.3867 5,676 D  
Common Stock 03/01/2019   S(1)   305 D $ 551.7927 5,371 D  
Common Stock 03/01/2019   M(1)   458 A $ 177.6833 5,829 D  
Common Stock 03/01/2019   S(1)   458 D $ 551.7927 5,371 D  
Common Stock 03/01/2019   M(1)   459 A $ 171.3333 5,830 D  
Common Stock 03/01/2019   S(1)   459 D $ 551.7927 5,371 D  

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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 3)		 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction 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
(Month/Day/Year)		 7. Title and Amount of Underlying Securities
(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
Non-Qualified Stock Option (right to buy) $ 171.3333 03/01/2019   M(1)     459   (2) 02/17/2025 Common Stock 459 $ 0 0 D  
Non-Qualified Stock Option (right to buy) $ 177.6833 03/01/2019   M(1)     458   (3) 08/17/2025 Common Stock 458 $ 0 0 D  
Non-Qualified Stock Option (right to buy) $ 178.3867 03/01/2019   M(1)     305   (2) 02/16/2026 Common Stock 305 $ 0 1,219 D  
Non-Qualified Stock Option (right to buy) $ 230.9967 03/01/2019   M(1)     305   (3) 08/15/2026 Common Stock 305 $ 0 1,219 D  
Non-Qualified Stock Option (right to buy) $ 238.9133 03/01/2019   M(1)     563   (2) 02/15/2027 Common Stock 563 $ 0 4,498 D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
Brogna Salvatore
1020 KIFER ROAD
SUNNYVALE, CA 94086		       EVP & Chief Operating Officer  

Signatures

 By: Lori Serrano For: Salvatore J Brogna   03/04/2019
**Signature of Reporting Person Date

Explanation of Responses:

* 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).
(1) These shares were sold in accordance with a Trading Plan that complies with SEC Rule 10b5-1 and expires on September 10, 2019.
(2) Non-statutory stock option granted pursuant to the 2010 Employee Stock Option Plan. The option vests 1/8th six months after the date of grant and 1/48th monthly thereafter.
(3) Non-statutory stock option granted pursuant to the 2010 Employee Stock Option Plan. Option shall vest 7/48 one month after the date of grant and 1/48th each month thereafter.

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