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Disclosery

Sentinel Dome Partners, LLC: LUMN position timeline

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

Sentinel Dome Partners, LLC held 332,816 LUMN shares at 2026-06-30 per its 13F-HR filed 2026-08-14.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 332,816 shares
    Change vs previous 13F +30,000 shares

    1.86% of the 13F portfolio, value $2,556,027.

    13F-HR 0001104659-26-096622 filed by Sentinel Dome Partners, 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 302,816 shares
    Change vs previous 13F +213,000 shares

    2% of the 13F portfolio, value $2,104,571.

    13F-HR 0001104659-26-061976 filed by Sentinel Dome Partners, 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 89,816 shares
    Change vs previous 13F not available

    0.47% of the 13F portfolio, value $697,870.

    13F-HR 0001104659-26-023987 filed by Sentinel Dome Partners, LLC
    Filed (acceptance time not in the bulk data set), ingested

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