Intuitive Surgical: Guthart trust proposes $12M sale

The past-three-months section lists 10,000 shares sold on August 11, 2026, for $4,000,000.00 in a 10b5-1 sales entry.

Rhea-AI Filing Summary

Intuitive Surgical, Inc. director Gary Guthart, signing as trustee, submitted a notice concerning the proposed sale of 27,139 common shares for the account of the Guthart Family Trust. The notice lists an aggregate market value of $12,045,645.15, an approximate sale date of October 23, 2026, and Morgan Stanley Smith Barney LLC in the broker field.

The shares are identified as acquired upon vesting of restricted stock units and performance stock units during the period from February 15, 2022, through February 28, 2025.

Key Figures

Proposed sale: 27,139 common shares Aggregate market value: $12,045,645.15 Approximate sale date: October 23, 2026 +2 more

5 metrics

Proposed sale 27,139 common shares Guthart Family Trust

Aggregate market value $12,045,645.15 Proposed sale

Approximate sale date October 23, 2026 Proposed sale

Prior shares sold 10,000 shares August 11, 2026

Prior sale value $4,000,000.00 August 11, 2026

Key Terms

restricted stock units, performance stock units, 10b5-1 Sales

3 terms

restricted stock units financial

"vesting of restricted stock units and performance stock units"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

performance stock units financial

"vesting of restricted stock units and performance stock units"

Performance stock units are a type of company award that grants employees shares of stock only if certain performance goals are met. They motivate employees to work toward specific company achievements, aligning their interests with those of shareholders. For investors, they can influence a company's future stock supply and reflect management’s confidence in reaching key targets.

10b5-1 Sales regulatory

"10b5-1 Sales for G S GUTHART & D C GUTHART"

10b5-1 sales are pre-arranged stock-trading plans that let company insiders automatically buy or sell shares according to a fixed schedule or formula, even if they later learn confidential information. Think of it as setting up an automatic thermostat for trades: it creates a clear, documented path that can protect insiders from insider-trading accusations and gives investors a signal about predictable insider activity—though it can also simply be a way for insiders to diversify or raise cash.

FAQ

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

How many ISRG shares does the Guthart Family Trust plan to sell?

The notice concerns the proposed sale of 27,139 common shares for the trust's account. It lists an aggregate market value of $12,045,645.15 and an approximate sale date of October 23, 2026.

How did the Guthart Family Trust acquire the ISRG shares?

The shares are identified as acquired upon vesting of restricted stock units and performance stock units during the period from February 15, 2022, through February 28, 2025.

What prior ISRG sales are listed for the Guthart Family Trust?

The past-three-months section lists 10,000 common shares sold on August 11, 2026, for $4,000,000.00 in a 10b5-1 sales entry for G. S. Guthart and D. C. Guthart, co-trustees of the Guthart Family Trust.

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

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Available on EDGAR 10/23/2026 - 04:19 PM EDT Accepted by SEC EDGAR 10/23/2026 - 04:18 PM EDT Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001280628
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	Intuitive Surgical, Inc.
SEC File Number	000-30713
Address of Issuer	1020 Kifer Road Sunnyvale CALIFORNIA 94086
Phone	4085232100
Name of Person for Whose Account the Securities are To Be Sold	GUTHART FAMILY TRUST
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Director

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004	27139	12045645.15	346643718	10/23/2026	NASDAQ

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	02/15/2022	RSU/PSU	Issuer			27139	02/15/2022	N/A

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
10b5-1 Sales for G S GUTHART & D C GUTHART CO-TTEEGUTHART FAMILY TRUST U/T/A DTD11/09/2000 1020 Kifer Road Sunnyvale CA 94086	Common	08/11/2026	10000	4000000.00

144: Remarks and Signature

Remarks	The securities to be sold were acquired upon the vesting of restricted stock units and performance stock units during the period of 02/15/2022 through 02/28/2025.
Date of Notice	10/23/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	05/07/2026
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/ Gary Guthart, Trustee
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)