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Disclosery

Seilern Investment Management Ltd: WST position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of Seilern Investment Management Ltd on WST, newest first. How the timeline and the estimate are built.

Seilern Investment Management Ltd held 120,729 WST 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 120,729 shares
    Change vs previous 13F -17,501 shares

    5.8% of the 13F portfolio, value $44,761,484.

    13F-HR 0001817797-26-000008 filed by Seilern Investment Management Ltd
    Accepted , ingested

  2. period ended2026-06-30
    13F 138,230 shares
    Change vs previous 13F -87,791 shares

    6.25% of the 13F portfolio, value $49,624,570.

    13F-HR 0001817797-26-000004 filed by Seilern Investment Management Ltd
    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 226,021 shares
    Change vs previous 13F -52,208 shares

    6.76% of the 13F portfolio, value $56,649,903.

    13F-HR 0001817797-26-000003 filed by Seilern Investment Management Ltd
    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 278,229 shares
    Change vs previous 13F -48,728 shares

    5.94% of the 13F portfolio, value $76,551,927.

    13F-HR 0001817797-26-000001 filed by Seilern Investment Management Ltd
    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 326,957 shares
    Change vs previous 13F -104,604 shares

    6.2% of the 13F portfolio, value $85,770,630.

    13F-HR 0001817797-25-000011 filed by Seilern Investment Management Ltd
    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 431,561 shares
    Change vs previous 13F -9,796 shares

    6.23% of the 13F portfolio, value $94,425,547.

    13F-HR 0001817797-25-000007 filed by Seilern Investment Management Ltd
    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 441,357 shares
    Change vs previous 13F -2,468 shares

    6.46% of the 13F portfolio, value $98,811,005.

    13F-HR 0001817797-25-000006 filed by Seilern Investment Management Ltd
    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 443,825 shares
    Change vs previous 13F not available

    8.28% of the 13F portfolio, value $145,379,317.

    13F-HR 0001817797-25-000003 filed by Seilern Investment Management Ltd
    Filed (acceptance time not in the bulk data set), ingested

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