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FIRST WILSHIRE SECURITIES MANAGEMENT INC: IOSP position timeline

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

FIRST WILSHIRE SECURITIES MANAGEMENT INC held 147,112 IOSP shares at 2026-06-30 per its 13F-HR filed 2026-08-14.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 147,112 shares
    Change vs previous 13F -960 shares

    2.47% of the 13F portfolio, value $11,973,446.

    13F-HR 0000732847-26-000014 filed by FIRST WILSHIRE SECURITIES MANAGEMENT INC
    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 148,072 shares
    Change vs previous 13F +47,498 shares

    2.44% of the 13F portfolio, value $10,812,217.

    13F-HR 0000732847-26-000007 filed by FIRST WILSHIRE SECURITIES 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 ended2025-12-31
    13F 100,574 shares
    Change vs previous 13F not available

    1.94% of the 13F portfolio, value $7,697,934.

    13F-HR 0000732847-26-000001 filed by FIRST WILSHIRE SECURITIES MANAGEMENT INC
    Filed (acceptance time not in the bulk data set), ingested

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