Intuitive Surgical EVP sells 69 ISRG shares

Intuitive Surgical’s manufacturing and supply chain executive sold 69 ISRG shares under a Rule 10b5-1 trading plan in early September 2026.

Rhea-AI Filing Summary

INTUITIVE SURGICAL INC (ISRG) reported that executive vice president and chief manufacturing and supply chain officer Mark Brosius sold a total of 69 shares of common stock in two transactions. On September 8, 2026 he sold 46 shares at $361.23 per share, and on September 9, 2026 he sold 23 shares at $350.20 per share. Both sales were made in open market or private transactions pursuant to a Trading Plan that complies with SEC Rule 10b5-1 and expires on February 14, 2027.

Insider Trade Summary 10b5-1

Net Seller: 69 shares

Net Sell 2 txns

Insider Brosius Mark

Role EVP & Chief Mfg and Supply Cha

Sold 69 shs ($25K)

Type	Security	Shares	Price	Value
Sale	Common Stock F1	23	$350.20	$8K
Sale	Common Stock F1	46	$361.23	$17K

Holdings After Transaction: Common Stock — 812 shares (Direct)

Footnotes (1)

1. F1. The transaction took place in accordance with a Trading Plan that complies with SEC Rule 10b5-1 and expires on February 14, 2027.

Key Figures

Shares sold September 8, 2026: 46 shares Price per share September 8, 2026 sale: $361.23 per share Shares sold September 9, 2026: 23 shares +3 more

6 metrics

Shares sold September 8, 2026 46 shares Common stock sold by Mark Brosius on September 8, 2026

Price per share September 8, 2026 sale $361.23 per share Sale of 46 shares of common stock by Mark Brosius

Shares sold September 9, 2026 23 shares Common stock sold by Mark Brosius on September 9, 2026

Price per share September 9, 2026 sale $350.20 per share Sale of 23 shares of common stock by Mark Brosius

Total shares sold in reported transactions 69 shares Combined total of the two reported insider sales

Rule 10b5-1 Trading Plan expiration date February 14, 2027 Expiration of Trading Plan covering the reported transactions

Key Terms

Trading Plan, SEC Rule 10b5-1, open market or private transaction

3 terms

Trading Plan regulatory

"The transaction took place in accordance with a Trading Plan that complies"

A trading plan is a written set of rules an investor follows about what to buy or sell, when to enter and exit positions, and how much risk to accept—like a travel itinerary that maps the route, stops, and budget before a trip. It matters because it helps remove emotional decisions during market swings, enforces discipline, and makes performance easier to review and improve, reducing the chance of costly impulsive moves.

SEC Rule 10b5-1 regulatory

"Trading Plan that complies with SEC Rule 10b5-1 and expires"

A SEC Rule 10b5-1 trading plan lets company insiders set up a written, prearranged schedule for buying or selling shares so those trades are not treated as illegal insider trading later, provided the plan was adopted when they did not possess important, nonpublic information and they follow it exactly. For investors this matters because such plans can make insider activity more predictable and reduce the appearance that trades were made on secret knowledge—think of it like programming an automatic thermostat so temperature changes aren’t blamed on someone’s private decisions—though changes to or disclosures about plans can still affect confidence.

open market or private transaction market

"Sale in open market or private transaction"

FAQ

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

What insider transactions did ISRG report for Mark Brosius in this Form 4?

The filing reports that Mark Brosius sold 69 shares of Intuitive Surgical common stock in two transactions on September 8 and 9, 2026 at prices of $361.23 and $350.20 per share, respectively, in open market or private transactions.

Were the recent ISRG insider sales by Mark Brosius under a Rule 10b5-1 plan?

Yes. The filing states the transactions took place in accordance with a Trading Plan that complies with SEC Rule 10b5-1 and that the plan expires on February 14, 2027, indicating the sales were pre-arranged under that plan.

How many ISRG shares did Mark Brosius sell on September 8, 2026?

On September 8, 2026, Mark Brosius sold 46 shares of Intuitive Surgical common stock at a price of $361.23 per share in an open market or private transaction pursuant to a Rule 10b5-1 Trading Plan.

How many ISRG shares did Mark Brosius sell on September 9, 2026?

On September 9, 2026, Mark Brosius sold 23 shares of Intuitive Surgical common stock at a price of $350.20 per share, also reported as an open market or private transaction under the same Rule 10b5-1 Trading Plan.

What is the total number of ISRG shares sold by Mark Brosius in this report?

Across the two reported transactions, Mark Brosius sold a total of 69 shares of Intuitive Surgical common stock, consisting of 46 shares on September 8, 2026 and 23 shares on September 9, 2026.

What role does Mark Brosius hold at INTUITIVE SURGICAL INC (ISRG)?

The filing identifies Mark Brosius as an officer of INTUITIVE SURGICAL INC with the title Executive Vice President and Chief Manufacturing and Supply Chain Officer, and the reported transactions relate to his holdings of Intuitive Surgical common stock.

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

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Available on EDGAR 09/09/2026 - 06:45 PM EDT Accepted by SEC EDGAR 09/09/2026 - 06:45 PM EDT Learn about SEC filing dates

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).

X

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^*

Brosius Mark

(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)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	EVP & Chief Mfg and Supply Cha

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
09/08/2026

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)
			Code	V	Amount	(A) or (D)	Price
Common Stock	09/08/2026		S(1)		46	D	$361.23	835	D
Common Stock	09/09/2026		S(1)		23	D	$350.2	812	D

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)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. The transaction took place in accordance with a Trading Plan that complies with SEC Rule 10b5-1 and expires on February 14, 2027.

	By: Stephanie Lim-Ignacio For: Brosius, Mark	09/09/2026
	** 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)