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MARTINGALE ASSET MANAGEMENT L P: NWN position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of MARTINGALE ASSET MANAGEMENT L P on NWN, newest first. How the timeline and the estimate are built.

MARTINGALE ASSET MANAGEMENT L P held 64,647 NWN shares at 2026-06-30 per its 13F-HR filed 2026-08-13.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 64,647 shares
    Change vs previous 13F +14,811 shares

    0.08% of the 13F portfolio, value $3,171,582.

    13F-HR 0000936944-26-000006 filed by MARTINGALE ASSET MANAGEMENT L P
    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 49,836 shares
    Change vs previous 13F +11,000 shares

    0.07% of the 13F portfolio, value $2,652,272.

    13F-HR 0000936944-26-000003 filed by MARTINGALE ASSET MANAGEMENT L P
    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 38,836 shares
    Change vs previous 13F -14,361 shares

    0.05% of the 13F portfolio, value $1,815,195.

    13F-HR 0000936944-26-000002 filed by MARTINGALE ASSET MANAGEMENT L P
    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 53,197 shares
    Change vs previous 13F +2,071 shares

    0.06% of the 13F portfolio, value $2,390,142.

    13F-HR 0000936944-25-000010 filed by MARTINGALE ASSET MANAGEMENT L P
    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 51,126 shares
    Change vs previous 13F +1,203 shares

    0.05% of the 13F portfolio, value $2,030,725.

    13F-HR 0000936944-25-000008 filed by MARTINGALE ASSET MANAGEMENT L P
    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 49,923 shares
    Change vs previous 13F +1,090 shares

    0.05% of the 13F portfolio, value $2,132,711.

    13F-HR 0000936944-25-000005 filed by MARTINGALE ASSET MANAGEMENT L P
    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 48,833 shares
    Change vs previous 13F -1,291 shares

    0.05% of the 13F portfolio, value $1,931,834.

    13F-HR 0000936944-25-000003 filed by MARTINGALE ASSET MANAGEMENT L P
    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 50,124 shares
    Change vs previous 13F not available

    0.05% of the 13F portfolio, value $2,046,062.

    13F-HR 0000936944-24-000007 filed by MARTINGALE ASSET MANAGEMENT L P
    Filed (acceptance time not in the bulk data set), ingested

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