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Disclosery

Rockingstone Advisors LLC: CSTM position timeline

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

Rockingstone Advisors LLC held 171,808 CSTM shares at 2026-06-30 per its 13F-HR filed 2026-07-14.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 171,808 shares
    Change vs previous 13F -20,029 shares

    2.2% of the 13F portfolio, value $5,475,521.

    13F-HR 0002027176-26-000003 filed by Rockingstone Advisors 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 191,837 shares
    Change vs previous 13F -27,390 shares

    2.16% of the 13F portfolio, value $4,715,353.

    13F-HR 0002027176-26-000002 filed by Rockingstone Advisors 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 219,227 shares
    Change vs previous 13F +4,465 shares

    1.88% of the 13F portfolio, value $4,132,429.

    13F-HR 0002027176-26-000001 filed by Rockingstone Advisors 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 214,762 shares
    Change vs previous 13F +1,285 shares

    1.58% of the 13F portfolio, value $3,195,659.

    13F-HR 0002027176-25-000007 filed by Rockingstone Advisors 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 213,477 shares
    Change vs previous 13F -66,085 shares

    1.49% of the 13F portfolio, value $2,839,244.

    13F-HR 0002027176-25-000004 filed by Rockingstone Advisors 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 279,562 shares
    Change vs previous 13F +28,645 shares

    1.27% of the 13F portfolio, value $2,820,781.

    13F-HR 0002027176-25-000003 filed by Rockingstone Advisors 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 250,917 shares
    Change vs previous 13F +81,467 shares

    1.14% of the 13F portfolio, value $2,576,918.

    13F-HR 0002027176-25-000001 filed by Rockingstone Advisors 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 169,450 shares
    Change vs previous 13F not available

    1.35% of the 13F portfolio, value $2,755,257.

    13F-HR 0002027176-24-000009 filed by Rockingstone Advisors LLC
    Filed (acceptance time not in the bulk data set), ingested

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