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Disclosery

Prospect Hill Management, LLC: ISRG position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of Prospect Hill Management, LLC on ISRG, newest first. How the timeline and the estimate are built.

Prospect Hill Management, LLC held 14,825 ISRG shares at 2026-06-30 per its 13F-HR filed 2026-08-06.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 14,825 shares
    Change vs previous 13F +250 shares

    2.29% of the 13F portfolio, value $5,895,606.

    13F-HR 0001837320-26-000003 filed by Prospect Hill Management, LLC
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  2. period ended2026-03-31
    13F 14,575 shares
    Change vs previous 13F +125 shares

    2.99% of the 13F portfolio, value $6,718,929.

    13F-HR 0001837320-26-000002 filed by Prospect Hill Management, LLC
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  3. period ended2025-12-31
    13F 14,450 shares
    Change vs previous 13F -375 shares

    3.31% of the 13F portfolio, value $8,183,902.

    13F-HR 0001837320-26-000001 filed by Prospect Hill Management, LLC
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  4. period ended2025-09-30
    13F 14,825 shares
    Change vs previous 13F -250 shares

    2.83% of the 13F portfolio, value $6,630,185.

    13F-HR 0001837320-25-000009 filed by Prospect Hill Management, LLC
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  5. period ended2025-06-30
    13F 15,075 shares
    Change vs previous 13F -50 shares

    4.23% of the 13F portfolio, value $8,191,906.

    13F-HR 0001837320-25-000008 filed by Prospect Hill Management, LLC
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  6. period ended2025-03-31
    13F 15,125 shares
    Change vs previous 13F +800 shares

    3.9% of the 13F portfolio, value $7,490,959.

    13F-HR 0001837320-25-000007 filed by Prospect Hill Management, LLC
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  7. period ended2024-12-31
    13F 14,325 shares
    Change vs previous 13F 0 shares

    3.29% of the 13F portfolio, value $7,477,077.

    13F-HR 0001837320-25-000001 filed by Prospect Hill Management, LLC
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).

  8. period ended2024-09-30
    13F 14,325 shares
    Change vs previous 13F not available

    3.53% of the 13F portfolio, value $7,037,443.

    13F-HR 0001837320-24-000004 filed by Prospect Hill Management, LLC
    Filed (acceptance time not in the bulk data set), ingested

    Acceptance time not in the bulk data set (spec §4.2).