What additional ISRG share holdings are reported for family trusts?

Two additional indirect holdings are listed: a Trust FBO Daughter and a Trust FBO Son, each showing 15,720 shares of Intuitive Surgical common stock after the reporting date, with no new transactions reported for those trusts.

Intuitive Surgical director sells 10,000 shares via trust

Q: What transaction did Gary S. Guthart report on Form 4 for ISRG?

Gary S. Guthart reported an indirect sale of 10,000 shares of Intuitive Surgical common stock on August 11, 2026, executed at $400.00 per share by a trust with which he is associated.

Q: Was the ISRG Form 4 sale by Gary S. Guthart under a 10b5-1 plan?

Yes. The filing footnote states the 10,000-share sale occurred under a Rule 10b5-1 trading plan that complies with SEC rules and is scheduled to expire on June 15, 2027.

Q: How many ISRG shares does the selling trust hold after this Form 4 sale?

Following the 10,000-share sale at $400.00, the reporting trust associated with Gary S. Guthart holds 1,245,679 shares of Intuitive Surgical common stock indirectly, as disclosed in the post-transaction holdings field.

Q: Are Gary S. Guthart’s ISRG holdings direct or indirect in this Form 4?

All reported positions are indirect. Shares are held by Trust and in separate trusts for the benefit of a daughter and son, each such child’s trust reflecting 15,720 shares after the reported date.

INTUITIVE SURGICAL INC director Gary S. Guthart reported an indirect sale of common stock for a trust on August 11, 2026.

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Filing Sentiment

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Sentiment and the balance of points

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Form Type

Rhea-AI Filing Summary

INTUITIVE SURGICAL INC director Gary S. Guthart reported an indirect sale of common stock for a trust on August 11, 2026. The trust sold 10,000 shares of common stock at a price of $400.00 per share in an open-market or private transaction. After this sale, the trust held 1,245,679 shares indirectly. Separate indirect holdings of 15,720 shares each are reported in trusts for a daughter and a son. The sale was executed under a Rule 10b5-1 trading plan expiring on June 15, 2027.

Insider Trade Summary 10b5-1

Net Seller: 10,000 shares

Net Sell 3 txns

Insider GUTHART GARY S

Role Director

Sold 10,000 shs ($4.00M)

Type	Security	Shares	Price	Value
Sale	Common Stock ^F1	10,000	$400.00	$4.00M
holding	Common Stock	--	--	--
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 1,245,679 shares (Indirect, by Trust); Common Stock — 15,720 shares (Indirect, Trust FBO Daughter); Common Stock — 15,720 shares (Indirect, Trust FBO Son)

Footnotes (1)

F1. The transaction took place in accordance with a Trading Plan that complies with SEC Rule 10b5-1 and expires on June 15, 2027.

Key Figures

Shares sold: 10,000 shares Sale price per share: $400.00 per share Trust holdings after sale: 1,245,679 shares +2 more

5 metrics

Shares sold 10,000 shares Common Stock sold indirectly by trust on August 11, 2026

Sale price per share $400.00 per share Price for the 10,000-share Common Stock sale

Trust holdings after sale 1,245,679 shares Indirect Common Stock held by trust following transaction

Daughter’s trust holdings 15,720 shares Indirect Common Stock in Trust FBO Daughter after reported date

Son’s trust holdings 15,720 shares Indirect Common Stock in Trust FBO Son after reported date

Key Terms

Rule 10b5-1 trading plan, indirect ownership, Form 4, Common Stock

4 terms

Rule 10b5-1 trading plan regulatory

"The transaction took place in accordance with a Trading Plan that complies with SEC Rule 10b5-1"

A Rule 10b5-1 trading plan is a pre-arranged schedule that allows company insiders to buy or sell stock at specific times, even if they have inside information. It helps prevent accusations of unfair trading by making these transactions look planned and transparent, rather than sneaky or illegal.

indirect ownership financial

"direct_or_indirect: "I" and nature_of_ownership: "by Trust""

Form 4 regulatory

"INSIDER FILING DATA (Form 4)"

Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.

Common Stock financial

"security_title: "Common Stock""

Common stock represents ownership shares in a company, giving investors a stake in its success and a say in important decisions through voting rights. It is the most common type of stock traded on markets and can provide income through dividends, as well as potential for value growth. For investors, holding common stock means sharing in the company’s profits and risks.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What transaction did Gary S. Guthart report on Form 4 for ISRG?

Gary S. Guthart reported an indirect sale of 10,000 shares of Intuitive Surgical common stock on August 11, 2026, executed at $400.00 per share by a trust with which he is associated.

Was the ISRG Form 4 sale by Gary S. Guthart under a 10b5-1 plan?

Yes. The filing footnote states the 10,000-share sale occurred under a Rule 10b5-1 trading plan that complies with SEC rules and is scheduled to expire on June 15, 2027.

How many ISRG shares does the selling trust hold after this Form 4 sale?

Following the 10,000-share sale at $400.00, the reporting trust associated with Gary S. Guthart holds 1,245,679 shares of Intuitive Surgical common stock indirectly, as disclosed in the post-transaction holdings field.

Are Gary S. Guthart’s ISRG holdings direct or indirect in this Form 4?

All reported positions are indirect. Shares are held by Trust and in separate trusts for the benefit of a daughter and son, each such child’s trust reflecting 15,720 shares after the reported date.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 08/12/2026 - 01:22 PM EDT

SEC Form 4

FORM 4

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

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

GUTHART GARY S

(Last)

(First)

(Middle)

1020 KIFER ROAD

(Street)

SUNNYVALE

CALIFORNIA

94086

(City)

(State)

(Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
INTUITIVE SURGICAL INC [ ISRG ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director	10% Owner
	Officer (give title below)	Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
08/11/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	08/11/2026		S⁽¹⁾		10,000	D	$400	1,245,679	I	by Trust
Common Stock								15,720	I	Trust FBO Daughter
Common Stock								15,720	I	Trust FBO Son

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 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: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)

Explanation of Responses:

1. The transaction took place in accordance with a Trading Plan that complies with SEC Rule 10b5-1 and expires on June 15, 2027.

	By: Stephanie Lim-Ignacio For: Guthart, Gary S	08/12/2026
	** 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 Number.
* Form 4: SEC 1474 (03-26)

Source: View Original Filing on SEC EDGAR