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TANAKA CAPITAL MANAGEMENT INC: CPRX position timeline

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

TANAKA CAPITAL MANAGEMENT INC held 113,418 CPRX shares at 2026-03-31 per its 13F-HR filed 2026-05-18.

the latest 13F is the newest step

  1. period ended2026-03-31
    13F 113,418 shares
    Change vs previous 13F -1,000 shares

    4.69% of the 13F portfolio, value $2,808,000.

    13F-HR 0000816788-26-000002 filed by TANAKA CAPITAL 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 ended2025-12-31
    13F 114,418 shares
    Change vs previous 13F 0 shares

    4.87% of the 13F portfolio, value $2,671,000.

    13F-HR 0000816788-26-000001 filed by TANAKA CAPITAL 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 114,418 shares
    Change vs previous 13F -37,475 shares

    4.06% of the 13F portfolio, value $2,254,000.

    13F-HR 0000816788-25-000005 filed by TANAKA CAPITAL 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 ended2025-03-31
    13F 151,893 shares
    Change vs previous 13F -1,398 shares

    8.77% of the 13F portfolio, value $3,683,000.

    13F-HR 0000816788-25-000002 filed by TANAKA CAPITAL 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 ended2024-12-31
    13F 153,291 shares
    Change vs previous 13F 0 shares

    7.31% of the 13F portfolio, value $3,199,000.

    13F-HR 0000816788-25-000001 filed by TANAKA CAPITAL 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 ended2024-09-30
    13F 153,291 shares
    Change vs previous 13F -100 shares

    7.05% of the 13F portfolio, value $3,047,000.

    13F-HR 0000816788-24-000004 filed by TANAKA CAPITAL 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 ended2024-06-30
    13F 153,391 shares
    Change vs previous 13F not available

    5.62% of the 13F portfolio, value $2,376,000.

    13F-HR 0000816788-24-000003 filed by TANAKA CAPITAL MANAGEMENT INC
    Filed (acceptance time not in the bulk data set), ingested

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