Intuitive Surgical (NASDAQ: ISRG) SVP stock units vest, shares withheld

Rhea-AI Filing Summary

Intuitive Surgical SVP and Chief Manufacturing and Supply Chain Officer Mark Brosius reported equity vesting and related tax withholdings. On February 28, 2026, 8,378 performance stock units granted on February 28, 2023 and 877 restricted stock units granted on February 28, 2022 converted into common stock.

In connection with these settlements, 435 and 4,155 shares of common stock were withheld at a price of $503.51 per share to cover tax liabilities and exercise costs. After these transactions, Brosius directly owned 6,564 shares of Intuitive Surgical common stock.

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

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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 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)
02/28/2026

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	02/28/2026		M(1)		877	A	$0.0	2,776	D
Common Stock	02/28/2026		F(1)		435	D	$503.51	2,341	D
Common Stock	02/28/2026		M(2)		8,378	A	$0.0	10,719	D
Common Stock	02/28/2026		F(3)		4,155	D	$503.51	6,564	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
Performance Stock Units - 2-28-2023	$0.0	02/28/2026		M			8,378	(2)	(2)	Common Stock	8,378	$0.0	0	D
Restricted Stock Units - 2-28-2022	$0.0	02/28/2026		M			877	(4)	(4)	Common Stock	877	$0.0	0	D

Explanation of Responses:

1. RSUs vest 25% per year over a four year period, commencing on the first anniversary of the grant date. RSUs convert into common stock on the vest date on a one-for-one basis. 25% of the shares have been released and a portion of the shares were held back to cover the statutory tax withholding requirements. The net shares were deposited into the holders account.

2. Represents performance stock units ("PSUs") initially granted to the Reporting Person on February 28, 2023 subject to achievement of certain performance metrics. The performance criteria for the PSUs reported herein have been achieved, as determined by the Compensation Committee of the Issuer. The PSUs reported herein vest on February 28, 2026, the third anniversary of the grant date, subject to Reporting Person's continuous service to the Issuer through each such vesting date.

3. This transaction represents the withholding of shares to cover taxes applicable to a settlement of PSUs reported on this Form 4.

4. Each RSU granted represents a contingent right to receive one share of Intuitive Surgical common stock. The grant vests 25% on the first anniversary of the date of grant and annually thereafter, over a four year period.

	By: Stephanie Lim-Ignacio For: Brosius, Mark	03/02/2026
	** Signature of Reporting Person	Date
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FAQ

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

Intuitive Surgical reported that SVP Mark Brosius had performance stock units and restricted stock units convert into common stock on February 28, 2026, followed by share withholdings to cover taxes and exercise costs, as disclosed in the Form 4 transaction details and related footnotes.

How many Intuitive Surgical shares were acquired through equity awards on this Form 4?

The Form 4 shows 8,378 performance stock units granted in 2023 and 877 restricted stock units granted in 2022 converting into Intuitive Surgical common stock on February 28, 2026, reflecting vesting of previously awarded equity rather than open-market purchases by the executive.

What tax-related share withholdings were disclosed for Intuitive Surgical (ISRG) SVP Brosius?

The filing discloses that 435 and 4,155 shares of Intuitive Surgical common stock were withheld at a price of $503.51 per share to satisfy statutory tax withholding and related obligations arising from the settlement of performance stock units and restricted stock units on February 28, 2026.

Did the Intuitive Surgical Form 4 involve open-market stock sales or purchases?

The Form 4 reflects derivative exercises and tax-withholding dispositions, not open-market trades. Shares were issued upon vesting of performance and restricted stock units, and a portion of those shares was withheld to cover tax liabilities and exercise-related obligations, according to the transaction codes and footnotes.

What is Mark Brosius’s direct Intuitive Surgical shareholding after these transactions?

After the vesting and tax-withholding transactions on February 28, 2026, the Form 4 reports that Mark Brosius directly owned 6,564 shares of Intuitive Surgical common stock, reflecting his updated equity position following the conversion of stock units and associated share withholdings.

How do Intuitive Surgical performance stock units and RSUs described here vest?

Restricted stock units vest 25% per year over four years, starting on the first anniversary of the grant date. The performance stock units vested on February 28, 2026 after performance criteria were achieved, as determined by the compensation committee and subject to continued service requirements.