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Disclosery

BISLETT MANAGEMENT, LLC: SIRI position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of BISLETT MANAGEMENT, LLC on SIRI, newest first. How the timeline and the estimate are built.

BISLETT MANAGEMENT, LLC held 600,000 SIRI shares at 2026-06-30 per its 13F-HR filed 2026-08-11.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 600,000 shares
    Change vs previous 13F 0 shares

    12.01% of the 13F portfolio, value $17,724,000.

    13F-HR 0000935836-26-000381 filed by BISLETT 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 600,000 shares
    Change vs previous 13F 0 shares

    10.68% of the 13F portfolio, value $13,848,000.

    13F-HR 0000935836-26-000235 filed by BISLETT 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 600,000 shares
    Change vs previous 13F -143,306 shares

    9.1% of the 13F portfolio, value $11,997,000.

    13F-HR 0000935836-26-000094 filed by BISLETT 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 743,306 shares
    Change vs previous 13F -30,003 shares

    12.53% of the 13F portfolio, value $17,300,447.

    13F-HR 0000935836-25-000663 filed by BISLETT 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 773,309 shares
    Change vs previous 13F -41,874 shares

    12.15% of the 13F portfolio, value $17,762,908.

    13F-HR 0000935836-25-000485 filed by BISLETT 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 815,183 shares
    Change vs previous 13F -4,779 shares

    13.01% of the 13F portfolio, value $18,378,301.

    13F-HR 0000935836-25-000326 filed by BISLETT 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 819,962 shares
    Change vs previous 13F -80,038 shares

    13.23% of the 13F portfolio, value $18,695,134.

    13F-HR 0000935836-25-000123 filed by BISLETT 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 900,000 shares
    Change vs previous 13F not available

    14.25% of the 13F portfolio, value $21,285,000.

    13F-HR 0000935836-24-000646 filed by BISLETT MANAGEMENT, LLC
    Filed (acceptance time not in the bulk data set), ingested

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