ISRG: Affiliate files Form 144 to sell 665 shares under 10b5-1

Rhea-AI Filing Summary

ISRG reported a proposed sale of 665 shares of common stock. The filing lists 665 shares tied to Performance Stock Units with an effective date of 02/28/2026. The excerpt also lists prior 10b5-1 dispositions by the reporting person, including two larger blocks on 03/09/2026 for 430 shares ($208,554.30) and 215 shares ($104,277.15), and multiple smaller daily 18-share sales in May 2026.

Insights

Securities Compliance Analyst

Notice documents proposed resale of 665 shares tied to performance awards.

The filing lists 665 shares associated with Performance Stock Units dated 02/28/2026. It also documents prior daily 10b5-1 sales and two larger disposals on 03/09/2026 totaling 645 shares with aggregate proceeds shown.

Timing, price execution, and whether these sales will be effected under a fixed plan are matters the filing records; subsequent filings would state final transaction settlement details.

Key Figures

Registered/offered shares: 665 shares Prior sale (03/09/2026): 430 shares Prior sale (03/09/2026): 215 shares +1 more

4 metrics

Registered/offered shares 665 shares Performance Stock Units dated 02/28/2026

Prior sale (03/09/2026) 430 shares proceeds <money>$208,554.30</money>

Prior sale (03/09/2026) 215 shares proceeds <money>$104,277.15</money>

Daily 10b5-1 sales (May 2026) 18 shares each individual sales on <date>05/18/2026</date>-<date>05/22/2026</date> with per-trade proceeds shown

Key Terms

Form 144, 10b5-1, Performance Stock Units

3 terms

Form 144 regulatory

"144: Securities To Be Sold"

Form 144 is a document that investors must file with the government when they plan to sell a large number of shares of a company's stock. It helps ensure transparency so everyone knows how many shares are being sold and when, which can impact the stock's price.

10b5-1 regulatory

"10b5-1 Sales for MARK BROSIUS"

A 10b5-1 plan is a pre-set schedule that lets company insiders buy or sell shares according to written instructions made when they do not possess material, nonpublic information. Think of it as a timed automatic payment for stock trades: it helps insiders avoid accusations of trading on secret information and gives outside investors a clearer signal about whether sales are routine or potentially informative about the company’s prospects.

Performance Stock Units financial

"Performance Stock Units | Issuer | 665 | 02/28/2026"

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.

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

144: Issuer Information

Name of Issuer

SEC File Number

Address of Issuer

Phone

Name of Person for Whose Account the Securities are To Be Sold

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

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	665	280669.90	354162842	06/08/2026	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	02/28/2026	Performance Stock Units	Issuer			665	02/28/2026	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 MARK BROSIUS 1020 Kifer Road Sunnyvale CA 94086	Common	05/22/2026	18	7916.40
10b5-1 Sales for MARK BROSIUS 1020 Kifer Road Sunnyvale CA 94086	Common	05/21/2026	18	8028.72
10b5-1 Sales for MARK BROSIUS 1020 Kifer Road Sunnyvale CA 94086	Common	05/20/2026	18	7926.84
10b5-1 Sales for MARK BROSIUS 1020 Kifer Road Sunnyvale CA 94086	Common	05/19/2026	18	7932.60
10b5-1 Sales for MARK BROSIUS 1020 Kifer Road Sunnyvale CA 94086	Common	05/18/2026	18	7604.46
10b5-1 Sales for MARK BROSIUS 1020 Kifer Road Sunnyvale CA 94086	Common	03/09/2026	430	208554.30
10b5-1 Sales for MARK BROSIUS 1020 Kifer Road Sunnyvale CA 94086	Common	03/09/2026	215	104277.15

144: Remarks and Signature

Remarks

Date of Notice

Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1

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

ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)

FAQ

What does ISRG's Form 144 for 665 shares mean?

It notifies the SEC of a proposed sale of 665 shares linked to Performance Stock Units dated 02/28/2026. The form signals an affiliate intends to sell shares but does not confirm completed trades or settlement details.

Were there prior related sales reported in the excerpt for ISRG?

Yes. The excerpt shows prior 10b5-1 sales including 430 shares for $208,554.30 and 215 shares for $104,277.15 on 03/09/2026, plus several daily 18-share sales in May 2026.

Does the Form 144 indicate who receives the sale proceeds?

The excerpt links the listed shares to the issuer and to the reporting person but does not state the recipient of proceeds explicitly. Cash‑flow treatment and final disposition details are not provided in the visible text.

Are the May 2026 transactions part of a trading plan?

The excerpt labels the May 2026 transactions as 10b5-1 sales, indicating they were executed under a prearranged trading plan. The filing shows these sales occurred on specific dates with per‑trade share counts and proceeds.