Were Mark Brosius’s ISRG share sales under a Rule 10b5-1 plan?

Yes. A footnote states the transactions occurred under a Trading Plan that complies with SEC Rule 10b5-1. The plan is described as expiring on February 14, 2027, indicating the trades were pre-arranged rather than discretionary timing decisions.

Intuitive Surgical (NASDAQ: ISRG) EVP sells 69 shares under 10b5-1 plan

Filing Impact

(Neutral)

Filing Sentiment

(Negative)

Form Type

Rhea-AI Filing Summary

Intuitive Surgical EVP & Chief Manufacturing and Supply Chain officer Mark Brosius reported small open-market sales of company Common Stock. Across three days, he sold a total of 69 shares at prices between $420.12 and $424.14 per share.

After these transactions, Brosius directly holds 1,454 shares of Intuitive Surgical Common Stock. The filing notes that the trades were executed under a Trading Plan that complies with SEC Rule 10b5-1 and is scheduled to expire on February 14, 2027.

Insider Trade Summary 10b5-1

Net Seller: 69 shares ($29,104)

Net Sell 3 txns

Insider Brosius Mark

Role EVP & Chief Mfg and Supply Cha

Sold 69 shs ($29K)

Type	Security	Shares	Price	Value
Sale	Common Stock	23	$424.14	$10K
Sale	Common Stock	23	$421.13	$10K
Sale	Common Stock	23	$420.12	$10K

Holdings After Transaction: Common Stock — 1,454 shares (Direct, null)

Footnotes (1)

[object Object]

Key Figures

Shares sold June 10, 2026: 23 shares at $424.14 Shares sold June 9, 2026: 23 shares at $421.13 Shares sold June 8, 2026: 23 shares at $420.12 +3 more

6 metrics

Shares sold June 10, 2026 23 shares at $424.14 Open-market sale of Common Stock

Shares sold June 9, 2026 23 shares at $421.13 Open-market sale of Common Stock

Shares sold June 8, 2026 23 shares at $420.12 Open-market sale of Common Stock

Total shares sold 69 shares Sum of three open-market sales

Shares held after trades 1,454 shares Direct Common Stock ownership following final sale

Rule 10b5-1 plan expiry February 14, 2027 Expiration date of pre-arranged Trading Plan

Key Terms

Rule 10b5-1, Trading Plan, open-market sale, Common Stock

4 terms

Rule 10b5-1 regulatory

"Trading Plan that complies with SEC Rule 10b5-1 and expires on February 14, 2027."

Rule 10b5-1 is a regulation that allows company insiders to buy or sell their shares at predetermined times, even if they have access to non-public information. It acts like setting a schedule in advance for transactions, helping prevent accusations of unfair trading. This rule provides a way for insiders to plan trades transparently, giving investors confidence that these transactions are not based on hidden information.

Trading Plan financial

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

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.

open-market sale financial

"transaction_action": "open-market sale""

An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

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.

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Form 4 Insider Transactions: What Each Field Means →

06/10/2026 - 06:01 PM

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^*

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)
06/08/2026

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)
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	06/08/2026		S⁽¹⁾		23	D	$420.12	1,500	D
Common Stock	06/09/2026		S⁽¹⁾		23	D	$421.13	1,477	D
Common Stock	06/10/2026		S⁽¹⁾		23	D	$424.14	1,454	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)
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 February 14, 2027.

	By: Stephanie Lim-Ignacio For: Brosius, Mark	06/10/2026
	** 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

FAQ

What insider stock transactions did ISRG executive Mark Brosius report?

Mark Brosius reported selling 69 shares of Intuitive Surgical Common Stock in three open-market transactions. The sales occurred over consecutive days at prices slightly above $420 per share, and were disclosed in a Form 4 insider trading report.

At what prices did Mark Brosius sell his ISRG shares?

Mark Brosius sold Intuitive Surgical shares at prices of $420.12, $421.13, and $424.14 per share. These were open-market sales of 23 shares each day, reflecting relatively small transactions in terms of share count and dollar value.

How many ISRG shares does Mark Brosius hold after these sales?

After the reported transactions, Mark Brosius directly holds 1,454 shares of Intuitive Surgical Common Stock. This share count is disclosed in the Form 4 as the total direct ownership immediately following the final sale reported in the filing.

Over what dates did ISRG’s Mark Brosius sell shares in this Form 4?

The Form 4 shows sales on June 8, June 9, and June 10, 2026. On each of these dates, Mark Brosius sold 23 shares of Intuitive Surgical Common Stock, for a cumulative total of 69 shares sold during the three-day period.