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PRIMECAP MANAGEMENT CO/CA/: IMNM position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of PRIMECAP MANAGEMENT CO/CA/ on IMNM, newest first. How the timeline and the estimate are built.

PRIMECAP MANAGEMENT CO/CA/ held 4,581,431 IMNM 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 4,581,431 shares
    Change vs previous 13F -206,800 shares

    0.06% of the 13F portfolio, value $97,080,523.

    13F-HR 0000763212-26-000028 filed by PRIMECAP MANAGEMENT CO/CA/
    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 4,788,231 shares
    Change vs previous 13F +102,790 shares

    0.08% of the 13F portfolio, value $104,718,612.

    13F-HR 0000763212-26-000016 filed by PRIMECAP MANAGEMENT CO/CA/
    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 4,685,441 shares
    Change vs previous 13F +1,667,432 shares

    0.08% of the 13F portfolio, value $100,643,273.

    13F-HR 0000763212-26-000012 filed by PRIMECAP MANAGEMENT CO/CA/
    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 3,018,009 shares
    Change vs previous 13F -2,201 shares

    0.03% of the 13F portfolio, value $35,340,897.

    13F-HR 0000763212-25-000005 filed by PRIMECAP MANAGEMENT CO/CA/
    Filed (acceptance time not in the bulk data set), ingested

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

  5. period ended2025-06-30
    13F 3,020,210 shares
    Change vs previous 13F -393,490 shares

    0.02% of the 13F portfolio, value $28,087,953.

    13F-HR 0001085146-25-004804 filed by PRIMECAP MANAGEMENT CO/CA/
    Filed (acceptance time not in the bulk data set), ingested

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

  6. period ended2025-03-31
    13F 3,413,700 shares
    Change vs previous 13F +3,132,900 shares

    0.02% of the 13F portfolio, value $22,974,201.

    13F-HR 0001085146-25-002901 filed by PRIMECAP MANAGEMENT CO/CA/
    Filed (acceptance time not in the bulk data set), ingested

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

  7. period ended2024-12-31
    13F 280,800 shares
    Change vs previous 13F 0 shares

    <0.01% of the 13F portfolio, value $2,982,096.

    13F-HR 0001085146-25-000946 filed by PRIMECAP MANAGEMENT CO/CA/
    Filed (acceptance time not in the bulk data set), ingested

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

  8. period ended2024-09-30
    13F 280,800 shares
    Change vs previous 13F not available

    <0.01% of the 13F portfolio, value $4,105,296.

    13F-HR 0001085146-24-005460 filed by PRIMECAP MANAGEMENT CO/CA/
    Filed (acceptance time not in the bulk data set), ingested

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