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Disclosery

Mountaineer Partners Management, LLC: SXT position timeline

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

Mountaineer Partners Management, LLC held 131,727 SXT 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 131,727 shares
    Change vs previous 13F -24,857 shares

    11.81% of the 13F portfolio, value $16,240,622.

    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 156,584 shares
    Change vs previous 13F +39,494 shares

    6.72% of the 13F portfolio, value $13,535,121.

    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 117,090 shares
    Change vs previous 13F not available

    6.16% of the 13F portfolio, value $11,000,605.

    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).