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Disclosery

Mainstream Capital Management LLC: IBM position timeline

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

Mainstream Capital Management LLC held 6,637 IBM shares at 2026-06-30 per its 13F-HR filed 2026-07-15.

the latest 13F is the newest step

  1. period ended2026-06-30
    13F 6,637 shares
    Change vs previous 13F +6,637 shares

    1.12% of the 13F portfolio, value $1,866,391.

    13F-HR 0002043084-26-000003 filed by Mainstream 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 ended2025-03-31
    13F 0 shares
    Change vs previous 13F -441 shares

    13F-HR 0002043084-25-000002 filed by Mainstream Capital Management LLC
    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.

  3. period ended2024-12-31
    13F 441 shares
    Change vs previous 13F not available

    0.07% of the 13F portfolio, value $96,945.

    13F-HR 0002043084-25-000001 filed by Mainstream Capital Management LLC
    Filed (acceptance time not in the bulk data set), ingested

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