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Chesley Taft & Associates LLC: ZTS position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of Chesley Taft & Associates LLC on ZTS, newest first. How the timeline and the estimate are built.

Chesley Taft & Associates LLC held 16,067 ZTS shares at 2026-09-30 per its 13F-HR filed 2026-10-13.

the latest 13F is the newest step

  1. period ended2026-09-30
    13F 16,067 shares
    Change vs previous 13F 0 shares

    0.04% of the 13F portfolio, value $1,121,959.

    13F-HR 0001164632-26-000006 filed by Chesley Taft & Associates LLC
    Accepted , ingested

  2. period ended2026-06-30
    13F 16,067 shares
    Change vs previous 13F -17,131 shares

    0.04% of the 13F portfolio, value $1,154,575.

    13F-HR 0001164632-26-000004 filed by Chesley Taft & Associates LLC
    Filed (acceptance time not in the bulk data set), ingested

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

  3. period ended2026-03-31
    13F 33,198 shares
    Change vs previous 13F -4,092 shares

    0.16% of the 13F portfolio, value $3,924,336.

    13F-HR 0001164632-26-000002 filed by Chesley Taft & Associates LLC
    Filed (acceptance time not in the bulk data set), ingested

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

  4. period ended2025-12-31
    13F 37,290 shares
    Change vs previous 13F -2,574 shares

    0.19% of the 13F portfolio, value $4,691,828.

    13F-HR 0001164632-26-000001 filed by Chesley Taft & Associates LLC
    Filed (acceptance time not in the bulk data set), ingested

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

  5. period ended2025-09-30
    13F 39,864 shares
    Change vs previous 13F -63,356 shares

    0.25% of the 13F portfolio, value $5,832,900.

    13F-HR 0001085146-25-005836 filed by Chesley Taft & Associates LLC
    Filed (acceptance time not in the bulk data set), ingested

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

  6. period ended2025-06-30
    13F 103,220 shares
    Change vs previous 13F -3,324 shares

    0.72% of the 13F portfolio, value $16,097,159.

    13F-HR 0001085146-25-003693 filed by Chesley Taft & Associates LLC
    Filed (acceptance time not in the bulk data set), ingested

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

  7. period ended2025-03-31
    13F 106,544 shares
    Change vs previous 13F -4,199 shares

    0.85% of the 13F portfolio, value $17,542,470.

    13F-HR 0001085146-25-002016 filed by Chesley Taft & Associates LLC
    Filed (acceptance time not in the bulk data set), ingested

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

  8. period ended2024-12-31
    13F 110,743 shares
    Change vs previous 13F not available

    0.84% of the 13F portfolio, value $18,043,357.

    13F-HR 0001085146-25-000305 filed by Chesley Taft & Associates LLC
    Filed (acceptance time not in the bulk data set), ingested

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