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Disclosery

Sienna Gestion: COST position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of Sienna Gestion on COST, newest first. How the timeline and the estimate are built.

Sienna Gestion held 12,872 COST shares at 2026-06-30 per its 13F-HR filed 2026-08-13.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 12,872 shares
    Change vs previous 13F +12,872 shares

    0.72% of the 13F portfolio, value $12,321,683.

    13F-HR 0000945621-26-001042 filed by Sienna Gestion
    Filed (acceptance time not in the bulk data set), ingested

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

  2. period ended2025-09-30
    13F 0 shares
    Change vs previous 13F -18,961 shares

    13F-HR 0000945621-25-001073 filed by Sienna Gestion
    Filed (acceptance time not in the bulk data set), ingested

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

    Exited: the 13F for this period no longer lists the position.

  3. period ended2025-06-30
    13F 18,961 shares
    Change vs previous 13F +1,807 shares

    1.18% of the 13F portfolio, value $17,137,013.

    13F-HR 0000945621-25-000651 filed by Sienna Gestion
    Filed (acceptance time not in the bulk data set), ingested

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

  4. period ended2025-03-31
    13F 17,154 shares
    Change vs previous 13F -1,995 shares

    1.28% of the 13F portfolio, value $15,770,325.

    13F-HR 0000945621-25-000460 filed by Sienna Gestion
    Filed (acceptance time not in the bulk data set), ingested

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

  5. period ended2024-12-31
    13F 19,149 shares
    Change vs previous 13F 0 shares

    1.18% of the 13F portfolio, value $17,543,112.

    13F-HR 0000945621-25-000148 filed by Sienna Gestion
    Filed (acceptance time not in the bulk data set), ingested

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

  6. period ended2024-09-30
    13F 19,149 shares
    Change vs previous 13F not available

    1.13% of the 13F portfolio, value $16,934,908.

    13F-HR 0000945621-24-000939 filed by Sienna Gestion
    Filed (acceptance time not in the bulk data set), ingested

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