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Disclosery

Tufton Capital Management: ISRG position timeline

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

Tufton Capital Management held 1,135 ISRG shares at 2026-06-30 per its 13F-HR filed 2026-07-27.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 1,135 shares
    Change vs previous 13F +10 shares

    0.08% of the 13F portfolio, value $451,000.

    13F-HR 0001055963-26-000003 filed by Tufton Capital Management
    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 1,125 shares
    Change vs previous 13F +4 shares

    0.09% of the 13F portfolio, value $518,000.

    13F-HR 0001055963-26-000002 filed by Tufton Capital Management
    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 1,121 shares
    Change vs previous 13F -167 shares

    0.11% of the 13F portfolio, value $634,000.

    13F-HR 0001055963-26-000001 filed by Tufton Capital Management
    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 1,288 shares
    Change vs previous 13F +285 shares

    0.1% of the 13F portfolio, value $576,000.

    13F-HR 0001055963-25-000005 filed by Tufton Capital Management
    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 1,003 shares
    Change vs previous 13F 0 shares

    0.1% of the 13F portfolio, value $545,000.

    13F-HR 0001055963-25-000003 filed by Tufton Capital Management
    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 1,003 shares
    Change vs previous 13F +30 shares

    0.1% of the 13F portfolio, value $496,755.

    13F-HR 0001055963-25-000002 filed by Tufton Capital Management
    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 973 shares
    Change vs previous 13F -35 shares

    0.1% of the 13F portfolio, value $507,867.

    13F-HR 0001055963-25-000001 filed by Tufton Capital Management
    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 1,008 shares
    Change vs previous 13F not available

    0.09% of the 13F portfolio, value $495,200.

    13F-HR 0001055963-24-000004 filed by Tufton Capital Management
    Filed (acceptance time not in the bulk data set), ingested

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