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Disclosery

Sarissa Capital Management LP: CYTK position timeline

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

Sarissa Capital Management LP held 228,623 CYTK 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 228,623 shares
    Change vs previous 13F 0 shares

    10.95% of the 13F portfolio, value $19,476,393.

    13F-HR 0000899140-26-000879 filed by Sarissa Capital Management LP
    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 228,623 shares
    Change vs previous 13F -167,734 shares

    9.56% of the 13F portfolio, value $15,068,542.

    13F-HR 0000899140-26-000574 filed by Sarissa Capital Management LP
    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 396,357 shares
    Change vs previous 13F -192,000 shares

    11.3% of the 13F portfolio, value $25,184,524.

    13F-HR 0000899140-26-000256 filed by Sarissa Capital Management LP
    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 588,357 shares
    Change vs previous 13F 0 shares

    17.93% of the 13F portfolio, value $32,336,101.

    13F-HR 0000899140-25-001320 filed by Sarissa Capital Management LP
    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 588,357 shares
    Change vs previous 13F -11,643 shares

    12.59% of the 13F portfolio, value $19,439,315.

    13F-HR 0000899140-25-000986 filed by Sarissa Capital Management LP
    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 600,000 shares
    Change vs previous 13F -233,799 shares

    15.59% of the 13F portfolio, value $24,114,000.

    13F-HR 0000899140-25-000705 filed by Sarissa Capital Management LP
    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 833,799 shares
    Change vs previous 13F -276,201 shares

    12.15% of the 13F portfolio, value $39,221,905.

    13F-HR 0000899140-25-000321 filed by Sarissa Capital Management LP
    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 1,110,000 shares
    Change vs previous 13F not available

    14.57% of the 13F portfolio, value $58,608,000.

    13F-HR 0000899140-24-001252 filed by Sarissa Capital Management LP
    Filed (acceptance time not in the bulk data set), ingested

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