Mountaineer Partners Management, LLC: KEX position timeline
Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of Mountaineer Partners Management, LLC on KEX, newest first. How the timeline and the estimate are built.
Mountaineer Partners Management, LLC held 0 KEX shares at 2026-06-30 per its 13F-HR filed 2026-08-13.
the latest 13F is the newest step
- period ended2026-06-3013F/A 0 sharesChange vs previous 13F -89,017 shares
13F-HR 0000919574-26-005107 filed by Mountaineer Partners Management, LLC
Filed (acceptance time not in the bulk data set), ingestedAcceptance time not in the bulk data set (spec §4.2).
Exited: the 13F for this period no longer lists the position.
- period ended2026-03-3113F 89,017 sharesChange vs previous 13F +1,573 shares
5.88% of the 13F portfolio, value $11,828,579.
13F-HR 0000919574-26-003280 filed by Mountaineer Partners Management, LLC
Filed (acceptance time not in the bulk data set), ingestedAcceptance time not in the bulk data set (spec §4.2).
- period ended2025-12-3113F 87,444 sharesChange vs previous 13F +22,013 shares
5.39% of the 13F portfolio, value $9,634,580.
13F-HR 0000919574-26-000943 filed by Mountaineer Partners Management, LLC
Filed (acceptance time not in the bulk data set), ingestedAcceptance time not in the bulk data set (spec §4.2).
- period ended2025-09-3013F 65,431 sharesChange vs previous 13F 0 shares
3.18% of the 13F portfolio, value $5,460,217.
13F-HR 0000919574-25-006893 filed by Mountaineer Partners Management, LLC
Filed (acceptance time not in the bulk data set), ingestedAcceptance time not in the bulk data set (spec §4.2).
- period ended2025-06-3013F 65,431 sharesChange vs previous 13F not available
4.9% of the 13F portfolio, value $7,420,530.
13F-HR 0000919574-25-004802 filed by Mountaineer Partners Management, LLC
Filed (acceptance time not in the bulk data set), ingestedAcceptance time not in the bulk data set (spec §4.2).