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Disclosery

Mountaineer Partners Management, LLC: CRS position timeline

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

Mountaineer Partners Management, LLC held 20,894 CRS 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 20,894 shares
    Change vs previous 13F -15,035 shares

    9.37% of the 13F portfolio, value $12,888,255.

    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).

  2. period ended2026-03-31
    13F 35,929 shares
    Change vs previous 13F -761 shares

    7.03% of the 13F portfolio, value $14,161,415.

    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 36,690 shares
    Change vs previous 13F -4,159 shares

    6.46% of the 13F portfolio, value $11,551,480.

    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 40,849 shares
    Change vs previous 13F +867 shares

    5.83% of the 13F portfolio, value $10,030,063.

    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 39,982 shares
    Change vs previous 13F not available

    7.3% of the 13F portfolio, value $11,050,225.

    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).