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Polaris Capital Management, LLC: ALSN position timeline

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

Polaris Capital Management, LLC held 164,900 ALSN shares at 2026-06-30 per its 13F-HR filed 2026-07-27.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 164,900 shares
    Change vs previous 13F -93,700 shares

    1.75% of the 13F portfolio, value $18,590,826.

    13F-HR 0001144969-26-000005 filed by Polaris Capital 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 258,600 shares
    Change vs previous 13F -10,000 shares

    2.48% of the 13F portfolio, value $30,271,716.

    13F-HR 0001144969-26-000004 filed by Polaris Capital 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 268,600 shares
    Change vs previous 13F -34,500 shares

    2.18% of the 13F portfolio, value $26,295,940.

    13F-HR 0001144969-26-000002 filed by Polaris Capital 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 303,100 shares
    Change vs previous 13F -5,600 shares

    1.69% of the 13F portfolio, value $25,727,128.

    13F-HR 0001144969-25-000010 filed by Polaris Capital 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 308,700 shares
    Change vs previous 13F -185,100 shares

    1.95% of the 13F portfolio, value $29,323,413.

    13F-HR 0001144969-25-000005 filed by Polaris Capital 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 493,800 shares
    Change vs previous 13F -54,400 shares

    2.7% of the 13F portfolio, value $47,241,846.

    13F-HR 0001144969-25-000004 filed by Polaris Capital 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 548,200 shares
    Change vs previous 13F -48,600 shares

    2.86% of the 13F portfolio, value $59,238,492.

    13F-HR 0001144969-25-000001 filed by Polaris Capital 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 596,800 shares
    Change vs previous 13F not available

    2.82% of the 13F portfolio, value $57,334,576.

    13F-HR 0001144969-24-000011 filed by Polaris Capital Management, LLC
    Filed (acceptance time not in the bulk data set), ingested

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