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Disclosery

WITTENBERG INVESTMENT MANAGEMENT, INC.: GLDD position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of WITTENBERG INVESTMENT MANAGEMENT, INC. on GLDD, newest first. How the timeline and the estimate are built.

WITTENBERG INVESTMENT MANAGEMENT, INC. held 0 GLDD shares at 2026-03-31 per its 13F-HR filed 2026-05-14.

the latest 13F is the newest step

  1. period ended2026-03-31
    13F 0 shares
    Change vs previous 13F -183,100 shares

    13F-HR 0001062993-26-002625 filed by WITTENBERG INVESTMENT MANAGEMENT, INC.
    Filed (acceptance time not in the bulk data set), ingested

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

    Exited: the 13F for this period no longer lists the position.

  2. period ended2025-12-31
    13F 183,100 shares
    Change vs previous 13F -8,700 shares

    0.92% of the 13F portfolio, value $2,402,272.

    13F-HR 0001062993-26-000921 filed by WITTENBERG INVESTMENT MANAGEMENT, INC.
    Filed (acceptance time not in the bulk data set), ingested

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

  3. period ended2025-09-30
    13F 191,800 shares
    Change vs previous 13F -5,000 shares

    0.91% of the 13F portfolio, value $2,299,682.

    13F-HR 0001062993-25-016732 filed by WITTENBERG INVESTMENT MANAGEMENT, INC.
    Filed (acceptance time not in the bulk data set), ingested

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

  4. period ended2025-06-30
    13F 196,800 shares
    Change vs previous 13F -31,500 shares

    1.05% of the 13F portfolio, value $2,398,992.

    13F-HR 0001062993-25-014036 filed by WITTENBERG INVESTMENT MANAGEMENT, INC.
    Filed (acceptance time not in the bulk data set), ingested

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

  5. period ended2025-03-31
    13F 228,300 shares
    Change vs previous 13F +47,000 shares

    0.9% of the 13F portfolio, value $1,986,210.

    13F-HR 0001062993-25-009041 filed by WITTENBERG INVESTMENT MANAGEMENT, INC.
    Filed (acceptance time not in the bulk data set), ingested

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

  6. period ended2024-12-31
    13F 181,300 shares
    Change vs previous 13F -88,724 shares

    0.8% of the 13F portfolio, value $2,046,877.

    13F-HR 0001062993-25-002229 filed by WITTENBERG INVESTMENT MANAGEMENT, INC.
    Filed (acceptance time not in the bulk data set), ingested

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

  7. period ended2024-09-30
    13F 270,024 shares
    Change vs previous 13F not available

    0.91% of the 13F portfolio, value $2,843,353.

    13F-HR 0001062993-24-018951 filed by WITTENBERG INVESTMENT MANAGEMENT, INC.
    Filed (acceptance time not in the bulk data set), ingested

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