Intuitive Surgical (ISRG) SVP executes planned sale of 1,293 shares under Rule 10b5-1 plan

Rhea-AI Filing Summary

Intuitive Surgical SVP Mark Brosius reported selling 1,293 shares of Common Stock in open-market transactions. He sold 648 shares at $490.19 per share on March 6, 2026, and 645 shares at $485.01 per share on March 9, 2026. After these sales, he directly holds 1,613 shares. The transactions were executed under a pre-arranged Trading Plan that complies with SEC Rule 10b5-1 and runs through February 14, 2027, indicating these sales were scheduled in advance rather than timed discretionarily.

Insights

Equity compensation and insider-trading analyst

Planned, open-market sales by an Intuitive Surgical SVP under a Rule 10b5-1 plan.

Senior vice president Mark Brosius completed two open-market sales of Intuitive Surgical Common Stock totaling 1,293 shares. The trades occurred on March 6, 2026 and March 9, 2026 at prices of $490.19 and $485.01 per share, respectively.

Following these transactions, Brosius directly owns 1,613 shares of Common Stock as reported in this filing. There are no derivative positions, such as stock options, shown as remaining in the derivative summary, so this report focuses solely on common-share holdings and dispositions.

A key detail is the footnote stating the trades were made under a Trading Plan that complies with SEC Rule 10b5-1 and expires on February 14, 2027. Such pre-arranged plans typically reduce the informational value of trade timing, making these transactions look more like routine liquidity or diversification rather than a reactive move to short-term company developments.

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 CA 94086

(City) (State) (Zip)

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)
	SVP & Chief Mfg and Supply Cha

3. Date of Earliest Transaction (Month/Day/Year)
03/06/2026

4. If Amendment, Date of 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

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	03/06/2026		S(1)		648	D	$490.19	2,258	D
Common Stock	03/09/2026		S(1)		645	D	$485.01	1,613	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	03/10/2026
	** 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.
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FAQ

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

Intuitive Surgical reported that SVP Mark Brosius sold 1,293 shares of Common Stock in two open-market transactions. He sold 648 shares on March 6, 2026, and 645 shares on March 9, 2026, at prices near $490 and $485 per share.

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

Mark Brosius sold Intuitive Surgical shares at $490.19 per share on March 6, 2026, and $485.01 per share on March 9, 2026. Both sales were classified as open-market transactions in Common Stock according to the Form 4 disclosure.

How many Intuitive Surgical (ISRG) shares does Mark Brosius hold after these sales?

After the reported transactions, Mark Brosius directly holds 1,613 shares of Intuitive Surgical Common Stock. This figure reflects his position following the two open-market sales totaling 1,293 shares disclosed in the Form 4 filing.

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

Yes. A footnote explains the transactions occurred under a Trading Plan that complies with SEC Rule 10b5-1, expiring February 14, 2027. Such pre-arranged plans indicate the trades were scheduled in advance rather than timed opportunistically around news.

Did the Intuitive Surgical (ISRG) Form 4 show any option exercises by Mark Brosius?

No. The Form 4 only reports non-derivative Common Stock sales by Mark Brosius and shows no derivative transactions or remaining derivative positions. This means the filing focuses solely on sales of already-held shares, not option exercises or conversions.