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Disclosery

Mountaineer Partners Management, LLC: HBM position timeline

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

Mountaineer Partners Management, LLC held 0 HBM 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/A 0 shares
    Change vs previous 13F -706,040 shares

    13F-HR 0000919574-26-005107 filed by Mountaineer Partners Management, LLC
    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.

  2. period ended2026-03-31
    13F 706,040 shares
    Change vs previous 13F -81,207 shares

    7.33% of the 13F portfolio, value $14,756,237.

    13F-HR 0000919574-26-003280 filed by Mountaineer Partners Management, 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 787,247 shares
    Change vs previous 13F -168,172 shares

    8.74% of the 13F portfolio, value $15,626,853.

    13F-HR 0000919574-26-000943 filed by Mountaineer Partners Management, 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 955,419 shares
    Change vs previous 13F -169,013 shares

    8.42% of the 13F portfolio, value $14,484,152.

    13F-HR 0000919574-25-006893 filed by Mountaineer Partners Management, 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 1,124,432 shares
    Change vs previous 13F -36,623 shares

    7.89% of the 13F portfolio, value $11,930,224.

    13F-HR 0000919574-25-004802 filed by Mountaineer Partners Management, 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 1,161,055 shares
    Change vs previous 13F +56,492 shares

    8.43% of the 13F portfolio, value $8,812,407.

    13F-HR 0000919574-25-003166 filed by Mountaineer Partners Management, 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 1,104,563 shares
    Change vs previous 13F -18,789 shares

    6.55% of the 13F portfolio, value $8,946,961.

    13F-HR 0000919574-25-001213 filed by Mountaineer Partners Management, 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/A 1,123,352 shares
    Change vs previous 13F not available

    6.44% of the 13F portfolio, value $10,323,605.

    13F-HR/A 0000919574-24-006813 filed by Mountaineer Partners Management, LLC
    Filed (acceptance time not in the bulk data set), ingested

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