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IRIDIAN ASSET MANAGEMENT LLC/CT: POST position timeline

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

IRIDIAN ASSET MANAGEMENT LLC/CT held 224,893 POST shares at 2026-06-30 per its 13F-HR filed 2026-07-29.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 224,893 shares
    Change vs previous 13F +42,924 shares

    6.82% of the 13F portfolio, value $19,849,056.

    13F-HR 0001033427-26-000010 filed by IRIDIAN ASSET MANAGEMENT LLC/CT
    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 181,969 shares
    Change vs previous 13F +12,844 shares

    7.29% of the 13F portfolio, value $17,989,455.

    13F-HR 0001033427-26-000004 filed by IRIDIAN ASSET MANAGEMENT LLC/CT
    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 169,125 shares
    Change vs previous 13F +50,044 shares

    6.17% of the 13F portfolio, value $16,751,831.

    13F-HR 0001033427-26-000003 filed by IRIDIAN ASSET MANAGEMENT LLC/CT
    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 119,081 shares
    Change vs previous 13F -20,874 shares

    5.04% of the 13F portfolio, value $12,798,826.

    13F-HR 0001033427-25-000014 filed by IRIDIAN ASSET MANAGEMENT LLC/CT
    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 139,955 shares
    Change vs previous 13F -33,719 shares

    5.29% of the 13F portfolio, value $15,259,294.

    13F-HR 0001033427-25-000012 filed by IRIDIAN ASSET MANAGEMENT LLC/CT
    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 173,674 shares
    Change vs previous 13F -32,339 shares

    6.34% of the 13F portfolio, value $20,208,707.

    13F-HR 0001033427-25-000003 filed by IRIDIAN ASSET MANAGEMENT LLC/CT
    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 206,013 shares
    Change vs previous 13F +34,825 shares

    6.27% of the 13F portfolio, value $23,580,248.

    13F-HR 0001033427-25-000002 filed by IRIDIAN ASSET MANAGEMENT LLC/CT
    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 171,188 shares
    Change vs previous 13F not available

    4.24% of the 13F portfolio, value $19,815,011.

    13F-HR 0001033427-24-000009 filed by IRIDIAN ASSET MANAGEMENT LLC/CT
    Filed (acceptance time not in the bulk data set), ingested

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