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Disclosery

Ridgewood Investments LLC: UMC position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of Ridgewood Investments LLC on UMC, newest first. How the timeline and the estimate are built.

Ridgewood Investments LLC held 31,285 UMC shares at 2026-09-30 per its 13F-HR filed 2026-10-05.

the latest 13F is the newest step

  1. period ended2026-09-30
    13F 31,285 shares
    Change vs previous 13F -17,907 shares

    0.28% of the 13F portfolio, value $766,170.

    13F-HR 0001703556-26-000010 filed by Ridgewood Investments LLC
    Accepted , ingested

  2. period ended2026-06-30
    13F 49,192 shares
    Change vs previous 13F -1,500 shares

    0.5% of the 13F portfolio, value $1,338,514.

    13F-HR 0001703556-26-000007 filed by Ridgewood Investments LLC
    Filed (acceptance time not in the bulk data set), ingested

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

  3. period ended2026-03-31
    13F 50,692 shares
    Change vs previous 13F -3,975 shares

    0.19% of the 13F portfolio, value $455,214.

    13F-HR 0001703556-26-000004 filed by Ridgewood Investments 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 54,667 shares
    Change vs previous 13F not available

    0.17% of the 13F portfolio, value $414,376.

    13F-HR 0001703556-25-000010 filed by Ridgewood Investments LLC
    Filed (acceptance time not in the bulk data set), ingested

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