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Disclosery

Westmount Partners, LLC: IONS position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of Westmount Partners, LLC on IONS, newest first. How the timeline and the estimate are built.

Westmount Partners, LLC held 12,961 IONS shares at 2026-06-30 per its 13F-HR filed 2026-07-07.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 12,961 shares
    Change vs previous 13F 0 shares

    0.23% of the 13F portfolio, value $1,027,678.

    13F-HR 0002051491-26-000004 filed by Westmount Partners, 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 12,961 shares
    Change vs previous 13F 0 shares

    0.24% of the 13F portfolio, value $973,241.

    13F-HR 0002051491-26-000003 filed by Westmount Partners, 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 12,961 shares
    Change vs previous 13F 0 shares

    0.26% of the 13F portfolio, value $1,025,345.

    13F-HR 0002051491-26-000001 filed by Westmount Partners, 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 12,961 shares
    Change vs previous 13F 0 shares

    0.22% of the 13F portfolio, value $852,834.

    13F-HR 0002051491-25-000017 filed by Westmount Partners, 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 12,961 shares
    Change vs previous 13F 0 shares

    0.14% of the 13F portfolio, value $512,089.

    13F-HR 0002051491-25-000015 filed by Westmount Partners, 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 12,961 shares
    Change vs previous 13F -501 shares

    0.12% of the 13F portfolio, value $391,033.

    13F-HR 0002051491-25-000013 filed by Westmount Partners, 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 13,462 shares
    Change vs previous 13F 0 shares

    0.14% of the 13F portfolio, value $470,632.

    13F-HR 0002051491-25-000002 filed by Westmount Partners, 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 13,462 shares
    Change vs previous 13F not available

    0.16% of the 13F portfolio, value $539,288.

    13F-HR 0002051491-25-000001 filed by Westmount Partners, LLC
    Filed (acceptance time not in the bulk data set), ingested

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