Insider 10b5-1 sales and RSU/PSU listings at ISRG (ISRG)

Rhea-AI Filing Summary

Mark Brosius reported insider sales under 10b5-1 plans and listed planned dispositions of equity awards. The excerpt shows three 10b5-1 sales in December 2025: 4,500, 464, and 312 shares, with proceeds of $2,463,120.00, $254,499.36, and $170,776.32 respectively. It also lists 2,154 Restricted Stock Units dated 02/10/2026 and 1,173 Performance Stock Units dated 02/28/2026 as securities to be sold.

Insights

Insider Transactions Specialist

Filed 10b5-1 sales by an individual with recent December 2025 transactions and upcoming RSU/PSU dispositions.

Records show three executed 10b5-1 sales in December 2025 totaling 5,276 shares sold for aggregate proceeds shown across the three trades. The filing lists planned sales of 2,154 Restricted Stock Units and 1,173 Performance Stock Units with grant dates in February 2026.

Timing and cash‑flow treatment are governed by the 10b5‑1 instruction and award terms; the excerpt does not state who will receive proceeds from the RSU/PSU dispositions. Subsequent filings would clarify settlement mechanics and any remaining holder limits.

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	3327	1651023.75	355130237	03/03/2026	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	02/10/2026	Restricted Stock Units	Issuer			2154	02/10/2026	N/A
Common	02/28/2026	Performance Stock Units	Issuer			1173	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	12/15/2025	464	254499.36
10b5-1 Sales for MARK BROSIUS 1020 Kifer Road Sunnyvale CA 94086	Common	12/12/2025	4500	2463120.00
10b5-1 Sales for MARK BROSIUS 1020 Kifer Road Sunnyvale CA 94086	Common	12/12/2025	312	170776.32

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 10b5-1 sales did ISRG insider Mark Brosius report?

The filing shows three 10b5-1 sales in December 2025 totaling 5,276 shares. Specifically, sales of 4,500; 464; and 312 shares occurred on 12/12/2025 and 12/15/2025, with proceeds listed for each transaction in the excerpt.

Does the excerpt list any upcoming equity awards to be sold for ISRG?

Yes. The excerpt lists 2,154 Restricted Stock Units dated 02/10/2026 and 1,173 Performance Stock Units dated 02/28/2026 as securities to be sold. The filing provides counts and grant dates for those awards.

How much cash did Mark Brosius receive from the December 2025 sales?

The excerpt shows proceeds of $2,463,120.00, $254,499.36, and $170,776.32 for the three December 2025 transactions. These amounts correspond to the 4,500; 464; and 312 share sales listed in the excerpt.

Were the December 2025 sales executed under a trading plan?

Yes. The excerpt identifies the December 2025 transactions as 10b5-1 Sales. The filing text attributes the trades to prearranged 10b5-1 plans for Mark Brosius and lists the trade dates and amounts accordingly.

Who is listed as the broker or intermediary in the filing?

The excerpt lists Morgan Stanley Smith Barney LLC Executive Financial Services with an address at 1 New York Plaza. That broker information appears in the filer/issuer section of the excerpt.