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

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

Intuitive Surgical (NASDAQ: ISRG) EVP sells 48 shares under 10b5-1 plan

Filing Impact

(Neutral)

Filing Sentiment

(Negative)

Form Type

Rhea-AI Filing Summary

Intuitive Surgical executive Mark Brosius, EVP & Chief Manufacturing and Supply Chain, reported small open-market sales of company common stock. He sold 25 shares at $414.13 on June 12, 2026 and 23 shares at $412.16 on June 11, 2026, totaling 48 shares. After these transactions, he directly holds 1,406 shares of Intuitive Surgical common stock. The trades were executed under a pre-arranged Rule 10b5-1 trading plan that is stated to expire on February 14, 2027, indicating the timing was set in advance.

Insider Trade Summary 10b5-1

Net Seller: 48 shares ($19,833)

Net Sell 2 txns

Insider Brosius Mark

Role EVP & Chief Mfg and Supply Cha

Sold 48 shs ($20K)

Type	Security	Shares	Price	Value
Sale	Common Stock	25	$414.13	$10K
Sale	Common Stock	23	$412.16	$9K

Holdings After Transaction: Common Stock — 1,406 shares (Direct, null)

Footnotes (1)

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Key Figures

Total shares sold: 48 shares Shares sold on June 11, 2026: 23 shares at $412.16/share Shares sold on June 12, 2026: 25 shares at $414.13/share +3 more

6 metrics

Total shares sold 48 shares Two open-market sales reported in Form 4

Shares sold on June 11, 2026 23 shares at $412.16/share Open-market sale of common stock

Shares sold on June 12, 2026 25 shares at $414.13/share Open-market sale of common stock

Shares held after transactions 1,406 shares Direct ownership following reported sales

Trading plan expiration February 14, 2027 Rule 10b5-1 trading plan end date

Number of sale transactions 2 transactions Both coded as open-market sales (S)

Key Terms

Rule 10b5-1 trading plan, open-market sale, Form 4, Common Stock, +1 more

5 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.

open-market sale financial

"transaction_action: "open-market sale" and transaction_code_description: "Sale in open market or private transaction""

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.

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" for both transactions"

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.

non-derivative financial

"transaction_type: "non-derivative" for the reported sales"

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Form 4 Insider Transactions: What Each Field Means →

06/12/2026 - 06:29 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)
06/11/2026

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	06/11/2026		S⁽¹⁾		23	D	$412.16	1,431	D
Common Stock	06/12/2026		S⁽¹⁾		25	D	$414.13	1,406	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	06/12/2026
	** 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

FAQ

What insider transaction did Intuitive Surgical (ISRG) report for Mark Brosius?

Intuitive Surgical reported that EVP Mark Brosius sold 48 shares of common stock in two open-market transactions. He sold 23 shares on June 11, 2026 and 25 shares on June 12, 2026, as disclosed in a Form 4 insider filing.

At what prices did Mark Brosius sell Intuitive Surgical (ISRG) shares?

Mark Brosius sold Intuitive Surgical shares at two different prices. He sold 23 shares at $412.16 per share on June 11, 2026 and 25 shares at $414.13 per share on June 12, 2026 in open-market sales.

How many Intuitive Surgical (ISRG) shares does Mark Brosius hold after the Form 4 sales?

After the reported transactions, Mark Brosius directly holds 1,406 shares of Intuitive Surgical common stock. This post-transaction balance reflects the two open-market sales totaling 48 shares disclosed in the Form 4 filing.

What type of insider transactions were reported for Intuitive Surgical (ISRG)?

The filing reports two non-derivative, open-market sales of Intuitive Surgical common stock by executive Mark Brosius. Both transactions are coded as “S” sales and are described as sales in the open market or private transactions.