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Disclosery

DEERFIELD MANAGEMENT COMPANY, L.P.: IONS position timeline

Available 13F reports, 13D and 13G stakes and each Form 3, 4 and 5 line of DEERFIELD MANAGEMENT COMPANY, L.P. on IONS, newest first. How the timeline and the estimate are built.

DEERFIELD MANAGEMENT COMPANY, L.P. held 1,979,669 IONS 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 1,979,669 shares
    Change vs previous 13F 0 shares

    1.64% of the 13F portfolio, value $156,967,955.

    13F-HR 0001213900-26-089991 filed by DEERFIELD MANAGEMENT COMPANY, L.P.
    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 1,979,669 shares
    Change vs previous 13F 0 shares

    1.75% of the 13F portfolio, value $148,653,345.

    13F-HR 0001213900-26-057678 filed by DEERFIELD MANAGEMENT COMPANY, L.P.
    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 1,979,669 shares
    Change vs previous 13F 0 shares

    2.01% of the 13F portfolio, value $156,611,615.

    13F-HR 0001213900-26-017265 filed by DEERFIELD MANAGEMENT COMPANY, L.P.
    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 1,979,669 shares
    Change vs previous 13F not available

    1.98% of the 13F portfolio, value $129,509,946.

    13F-HR 0001213900-25-110851 filed by DEERFIELD MANAGEMENT COMPANY, L.P.
    Filed (acceptance time not in the bulk data set), ingested

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