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CYTOKINETICS INC

CYTK · Pharmaceutical Preparations · 124.4M shares · +14%/yr ↑ shares · EDGAR filings ↗
Net buyback after stock comp: -$72M (gross $68K, SBC $72M)

Reference price $79.51 · est. market cap ~$9.9B — last insider sale, 2026-06-23 (estimated from the dated SEC Form 4 price × shares outstanding — not a live quote)

Grade

B72

Newly commercial cardiac-myosin franchise — aficamten (MYQORZO) won FDA/EU/China approval in late 2025, a major de-risking event backed by $1.5B cash.

Strengths

Risks

Notable findings

Quarterly revenue

2025-06-30 · $67M2025-09-30 · $2M2025-12-31 · $18M2026-03-31 · $19M

Last 4 quarters · from SEC filings.

Key metrics

Operating margin
-695.4%
Net margin
-891.6%
Return on equity
119.0%
Return on assets
-55.1%
Revenue growth (QoQ)
9.0%
Debt / equity
-0.4×
Interest coverage
-13.4×
Current ratio
4.5×
Free cash flow
-$535M
EBITDA
-$602M
Tangible book value
-$660M
Cash & investments
$1.5B
Cash runway
12q
Stock comp / revenue
127.5%

Insider transactions · last 18 months

DateInsiderTypeSharesPrice
2026-06-23Malik Fady IbrahamOption exercise3.5K$7.80
2026-06-23Malik Fady IbrahamSell3.5K$79.51
2026-06-15Blum Robert ISell7.5K$70.46
2026-06-09Malik Fady IbrahamSell3.5K$67.98
2026-06-09Malik Fady IbrahamOption exercise3.5K$7.80
2026-06-01Kaye Edward M. MDSell2.9K$76.09
2026-06-01Callos AndrewOption exercise15K$23.26
2026-06-01Callos AndrewSell15K$74.08
2026-06-01PARSHALL B LYNNESell5.0K$74.08
2026-05-27Wysenski NancyGrant2.9K
2026-05-27WIERENGA WENDELLGrant2.9K
2026-05-27Blum Robert ISell7.5K$77.21
2026-05-27Bhanji MunaGrant2.9K
2026-05-27Daly James MGrant2.9K
2026-05-27Harrington Robert ArthurGrant2.9K
2026-05-27HENDERSON JOHN TGrant2.9K
2026-05-27Kaye Edward M. MDGrant2.9K
2026-05-27PARSHALL B LYNNEGrant2.9K
2026-05-27Landry Robert EGrant2.9K
2026-05-19Malik Fady IbrahamSell3.5K$75.69
2026-05-19Malik Fady IbrahamOption exercise3.5K$7.80
2026-05-14Blum Robert ISell7.5K$77.92
2026-05-05Malik Fady IbrahamOption exercise3.5K$7.80
2026-05-05Malik Fady IbrahamSell3.5K$77.37
2026-05-05WIERENGA WENDELLOption exercise4.0K$12.40
2026-05-05WIERENGA WENDELLSell4.0K$75.00
2026-05-05Lee SungSell24K$76.87
2026-05-05HENDERSON JOHN TOption exercise20K$7.61
2026-05-05HENDERSON JOHN TSell20K$75.97
2026-05-05Callos AndrewOption exercise11K$39.13
2026-05-05Callos AndrewSell11K$77.25
2026-05-01Callos AndrewOption exercise16K$37.63
2026-05-01Callos AndrewSell16K$65.00
2026-04-30Callos AndrewOption exercise15K$23.26
2026-04-30Callos AndrewSell15K$63.26
2026-04-29Blum Robert ISell7.5K$59.62
2026-04-21Malik Fady IbrahamOption exercise3.5K$7.80
2026-04-21Malik Fady IbrahamSell3.5K$65.69
2026-04-15Blum Robert ISell7.5K$65.38
2026-04-15Callos AndrewSell7.4K$66.02
2026-04-15Wysenski NancyGrant95$65.37
2026-04-15WIERENGA WENDELLGrant95$65.37
2026-04-15Kaye Edward M. MDGrant191$65.37
2026-04-15HENDERSON JOHN TGrant325$65.37
2026-04-15Harrington Robert ArthurGrant191$65.37
2026-04-15Daly James MGrant191$65.37
2026-04-07Malik Fady IbrahamOption exercise1.0K$10.60
2026-04-07Malik Fady IbrahamOption exercise3.5K$7.80
2026-04-07Malik Fady IbrahamSell3.5K$65.21
2026-04-07Malik Fady IbrahamSell1.0K$64.75
2026-04-01Blum Robert ISell7.5K$66.63
2026-03-31Callos AndrewSell3.6K$65.00
2026-03-18Callos AndrewSell1.9K$62.07
2026-03-17Blum Robert ISell24K$62.15
2026-03-17Lee SungSell4.9K$62.15
2026-03-17Callos AndrewSell5.6K$62.15
2026-03-17Callos AndrewSell2.9K$62.15
2026-03-17Malik Fady IbrahamSell7.6K$62.15
2026-03-17Malik Fady IbrahamSell4.4K$62.15
2026-03-17Blum Robert ISell13K$62.15
2026-03-16Callos AndrewSell1.7K$61.03
2026-03-15Lee SungGrant21K
2026-03-15Blum Robert IGrant75K
2026-03-15Callos AndrewGrant21K
2026-03-15Callos AndrewGrant13K
2026-03-15Hessekiel JeffreyGrant21K
2026-03-15Malik Fady IbrahamGrant27K
2026-03-09Blum Robert ISell7.9K$60.72
2026-03-09Callos AndrewSell2.6K$60.72
2026-03-09Malik Fady IbrahamSell2.9K$60.72
2026-03-05Callos AndrewOption exercise15K$23.26
2026-03-05Callos AndrewOption exercise11K$39.13
2026-03-05Callos AndrewSell15K$61.87
2026-03-05Callos AndrewSell11K$61.88
2026-03-02Callos AndrewOption exercise886$37.63
2026-03-02PARSHALL B LYNNESell5.0K$61.21
2026-03-02Callos AndrewSell886$61.62
2026-02-05Callos AndrewOption exercise15K$23.26
2026-02-05Callos AndrewSell15K$61.93
2026-02-02Callos AndrewOption exercise886$37.63
2026-02-02Callos AndrewSell886$62.10
2026-01-15HENDERSON JOHN TGrant334$63.44
2026-01-15Daly James MGrant197$63.44
2026-01-15Wysenski NancyGrant98$63.44
2026-01-15WIERENGA WENDELLGrant98$63.44
2026-01-15Kaye Edward M. MDGrant197$63.44
2026-01-15Harrington Robert ArthurGrant197$63.44
2026-01-05Callos AndrewOption exercise15K$23.26
2026-01-05Callos AndrewSell15K$60.28
2026-01-02Callos AndrewSell885$63.16
2026-01-02Callos AndrewSell913$62.09
2026-01-02Callos AndrewOption exercise885$37.63
2025-12-29Callos AndrewSell1.8K$62.44
2025-12-22Blum Robert ITax withheld30K$68.18
2025-12-22Blum Robert IGrant5.8K
2025-12-22Blum Robert IGrant5.8K
2025-12-22Blum Robert ITax withheld2.9K$62.72
2025-12-22Malik Fady IbrahamGrant2.0K
2025-12-22Malik Fady IbrahamGrant2.0K
2025-12-22Malik Fady IbrahamTax withheld1.0K$62.72
2025-12-22Callos AndrewGrant1.6K
2025-12-22Callos AndrewGrant1.6K
2025-12-22Callos AndrewTax withheld675$62.72
2025-12-22Lee SungGrant2.2K
2025-12-22Lee SungGrant2.2K
2025-12-22Lee SungTax withheld805$62.72
2025-12-22Blum Robert IOption exercise55K$6.67
2025-12-22Blum Robert IOption exercise17K$6.67
2025-12-22WIERENGA WENDELLOption exercise20K$7.61
2025-12-22WIERENGA WENDELLSell20K$66.14
2025-12-16Malik Fady IbrahamOption exercise2.2K$10.60
2025-12-16Malik Fady IbrahamSell2.2K$61.24
2025-12-08Callos AndrewOption exercise1.0K$39.13
2025-12-08Callos AndrewSell1.0K$65.96
2025-12-05Callos AndrewSell52K$65.95
2025-12-05Callos AndrewOption exercise11K$37.63
2025-12-05Callos AndrewOption exercise15K$23.26
2025-12-05Callos AndrewOption exercise11K$39.13
2025-12-05Callos AndrewOption exercise16K$37.63
2025-12-03Malik Fady IbrahamTax withheld2.1K$65.02
2025-12-03Lee SungTax withheld1.6K$65.02
2025-12-03Callos AndrewTax withheld1.4K$65.02
2025-12-03Blum Robert ITax withheld5.9K$65.02
2025-12-02Malik Fady IbrahamOption exercise2.2K$10.60
2025-12-02HENDERSON JOHN TOption exercise8.8K$10.00
2025-12-02HENDERSON JOHN TSell8.8K$63.90
2025-12-02Malik Fady IbrahamSell2.2K$63.89
2025-12-01Kaye Edward M. MDOption exercise20K$14.25
2025-12-01Kaye Edward M. MDSell28K$66.72
2025-12-01Kaye Edward M. MDOption exercise8.1K$12.40
2025-12-01Harrington Robert ArthurSell2.1K$66.80
2025-11-19PARSHALL B LYNNESell5.0K$64.73
2025-11-18Malik Fady IbrahamSell2.2K$66.45
2025-11-18Malik Fady IbrahamOption exercise2.2K$10.60
2025-11-14Hessekiel JeffreyGrant87K
2025-11-11Kaye Edward M. MDOption exercise5.2K$9.66
2025-11-11Kaye Edward M. MDSell5.2K$65.08
2025-11-05Blum Robert IGift2.0K
2025-11-04Malik Fady IbrahamOption exercise2.3K$10.60
2025-11-04Malik Fady IbrahamSell2.3K$59.55
2025-10-30Blum Robert ISell5.0K$62.86
2025-10-27WIERENGA WENDELLOption exercise4.4K$10.00
2025-10-27WIERENGA WENDELLSell4.4K$58.68
2025-10-21Malik Fady IbrahamOption exercise2.1K$10.60
2025-10-21Malik Fady IbrahamSell2.1K$58.22
2025-10-16Blum Robert ISell5.0K$60.03
2025-10-15WIERENGA WENDELLGrant99$62.80
2025-10-15Harrington Robert ArthurGrant199$62.80
2025-10-15HENDERSON JOHN TGrant338$62.80
2025-10-15Kaye Edward M. MDGrant199$62.80
2025-10-15Wysenski NancyGrant99$62.80
2025-10-07Malik Fady IbrahamOption exercise2.0K$10.60
2025-10-07Malik Fady IbrahamSell2.0K$60.56
2025-10-06Kaye Edward M. MDSell6.8K$60.00
2025-10-01Blum Robert ISell5.0K$55.05
2025-09-30Kaye Edward M. MDSell6.7K$55.08
2025-09-23Malik Fady IbrahamOption exercise2.0K$10.60
2025-09-23Malik Fady IbrahamSell2.0K$49.28
2025-09-15Blum Robert ISell5.0K$49.77
2025-09-09Malik Fady IbrahamOption exercise2.0K$10.60
2025-09-09Malik Fady IbrahamSell2.0K$51.29
2025-09-02Blum Robert ISell5.0K$48.76
2025-09-02Kaye Edward M. MDSell6.8K$50.00
2025-09-02Harrington Robert ArthurSell2.1K$48.67
2025-08-19Malik Fady IbrahamSell2.0K$38.31
2025-08-19Malik Fady IbrahamOption exercise2.0K$10.60
2025-08-15Blum Robert ISell5.0K$38.42
2025-08-05Malik Fady IbrahamOption exercise2.0K$10.60
2025-08-05Malik Fady IbrahamSell2.0K$36.34
2025-07-29Blum Robert ISell5.0K$36.45
2025-07-22Malik Fady IbrahamOption exercise2.0K$10.60
2025-07-22Malik Fady IbrahamSell2.0K$37.47
2025-07-15HENDERSON JOHN TGrant559$38.01
2025-07-15Wysenski NancyGrant164$38.01
2025-07-15WIERENGA WENDALLGrant164$38.01
2025-07-15Kaye Edward M. MDGrant328$38.01
2025-07-15Harrington Robert ArthurGrant328$38.01
2025-07-14Blum Robert ISell5.0K$38.15
2025-07-08Malik Fady IbrahamSell2.0K$33.76
2025-07-08Malik Fady IbrahamOption exercise2.0K$10.60
2025-07-01Blum Robert ISell5.0K$33.55
2025-06-17Malik Fady IbrahamOption exercise2.0K$10.60
2025-06-17Malik Fady IbrahamSell2.0K$32.91
2025-06-16Blum Robert ISell5.0K$33.80
2025-06-05Kaye Edward M. MDSell3.6K$32.10
2025-06-05Callos AndrewSell8.7K$32.04
2025-06-03Malik Fady IbrahamSell2.0K$31.88
2025-06-03Malik Fady IbrahamOption exercise2.0K$10.60
2025-06-02Lee SungTax withheld5.0K$31.21
2025-06-02Blum Robert ISell5.0K$31.22
2025-05-20Malik Fady IbrahamOption exercise2.0K$10.60
2025-05-20Malik Fady IbrahamSell2.0K$31.98
2025-05-16Blum Robert ISell5.0K$30.93
2025-05-15Bhanji MunaSell1.5K$29.73
2025-05-14HENDERSON JOHN TGrant7.3K
2025-05-14Harrington Robert ArthurGrant7.3K
2025-05-14PARSHALL B LYNNEGrant7.3K
2025-05-14Bhanji MunaGrant7.3K
2025-05-14Kaye Edward M. MDGrant7.3K
2025-05-14Landry Robert EGrant7.3K
2025-05-14WIERENGA WENDALLGrant7.3K
2025-05-14Wysenski NancyGrant7.3K
2025-05-06Malik Fady IbrahamOption exercise2.0K$10.60
2025-05-06Malik Fady IbrahamSell2.0K$35.01
2025-05-05Callos AndrewSell4.0K$36.68
2025-04-29Blum Robert ISell5.0K$40.96
2025-04-22Malik Fady IbrahamOption exercise2.0K$10.60
2025-04-22Malik Fady IbrahamSell2.0K$38.11
2025-04-21WIERENGA WENDALLOption exercise20K$6.21
2025-04-21WIERENGA WENDALLSell20K$38.46
2025-04-15HENDERSON JOHN TOption exercise20K$6.21
2025-04-15HENDERSON JOHN TSell3.2K$38.66
2025-04-15HENDERSON JOHN TGrant551$38.56
2025-04-15Harrington Robert ArthurGrant324$38.56
2025-04-15Kaye Edward M. MDGrant324$38.56
2025-04-15WIERENGA WENDALLGrant162$38.56
2025-04-15Wysenski NancyGrant162$38.56
2025-04-10Blum Robert ISell5.0K$36.77
2025-04-08Malik Fady IbrahamOption exercise2.0K$10.60
2025-04-08Malik Fady IbrahamSell2.0K$36.18
2025-04-07Callos AndrewSell2.9K$35.78
2025-04-03Harrington Robert ArthurSell450$39.43
2025-03-31Blum Robert ISell15K$40.75
2025-03-19Malik Fady IbrahamGift200
2025-03-18Malik Fady IbrahamOption exercise2.0K$10.60
2025-03-18Malik Fady IbrahamSell2.0K$43.58
2025-03-17Blum Robert ISell13K$44.38
2025-03-17Callos AndrewSell2.8K$44.38
2025-03-17Malik Fady IbrahamSell4.4K$44.38
2025-03-17Blum Robert ISell25K$44.65
2025-03-17Callos AndrewOption exercise21K$23.26
2025-03-17Callos AndrewSell21K$45.14
2025-03-14Lee SungGrant33K
2025-03-14Blum Robert IGrant116K
2025-03-14Malik Fady IbrahamGrant39K
2025-03-14Callos AndrewGrant33K
2025-03-14Callos AndrewOption exercise100$23.26
2025-03-14Callos AndrewSell100$45.00
2025-03-13Callos AndrewSell27K$43.62
2025-03-06Callos AndrewSell3.3K$43.27
2025-03-06Malik Fady IbrahamSell8.2K$43.27
2025-03-06Blum Robert ISell17K$43.44
2025-03-05Blum Robert ISell25K$43.23
2025-03-04Malik Fady IbrahamSell2.0K$42.50
2025-03-04Malik Fady IbrahamOption exercise2.0K$10.60
2025-03-04Harrington Robert ArthurSell900$42.50
2025-03-03Malik Fady IbrahamSell2.4K$42.88
2025-03-03Callos AndrewSell1.1K$42.88
2025-03-03Blum Robert ISell8.7K$42.88
2025-02-18Malik Fady IbrahamOption exercise2.0K$10.60
2025-02-18Malik Fady IbrahamSell2.0K$45.98
2025-02-04Malik Fady IbrahamOption exercise2.0K$10.60
2025-02-04Malik Fady IbrahamSell2.0K$48.06
2025-01-21Malik Fady IbrahamSell2.0K$45.92
2025-01-21Malik Fady IbrahamOption exercise2.0K$10.60
2025-01-07Malik Fady IbrahamOption exercise2.0K$10.60
2025-01-07Malik Fady IbrahamSell2.0K$49.32
2025-01-02WIERENGA WENDALLGrant127$48.93
2025-01-02Wysenski NancyGrant127$48.93
2025-01-02Kaye Edward M. MDGrant255$48.93
2025-01-02HENDERSON JOHN TGrant434$48.93
2025-01-02Harrington Robert ArthurGrant255$48.93

All non-derivative Form 4 activity (SEC), newest first.

Clinical trials

TrialTitlePhaseStatusPrimary completion
NCT03160898 ↗A Study to Evaluate Efficacy, Safety and Tolerability of CK-2127107 in Patients With Amyotrophic Lateral Sclerosis (ALS)
Amyotrophic Lateral Sclerosis
PHASE2Completed2019-03-07
NCT02644668 ↗A Study of CK-2127107 in Patients With Spinal Muscular Atrophy
Spinal Muscular Atrophy
PHASE2Completed2018-05-31

Source: ClinicalTrials.gov (U.S. NIH) · active studies first.

Supply chain

Customers (2)

Suppliers (0)

    Named in the 10-K; linked when we track them.

    Notable events (8-K)

    DateItems
    2026-05-27Shareholder votefiling ↗
    2026-05-08OtherExhibitsfiling ↗
    2026-05-05OtherExhibitsfiling ↗
    2026-05-05ResultsExhibitsfiling ↗
    2026-02-24ResultsExhibitsfiling ↗
    2026-02-17Otherfiling ↗
    2025-12-19Otherfiling ↗
    2025-12-12Otherfiling ↗

    Recent filings

    FormFiledPeriodAccession
    8-K2026-05-272026-05-270001193125-26-241840 ↗
    8-K2026-05-082026-05-060001193125-26-214606 ↗
    8-K2026-05-052026-05-050001193125-26-206360 ↗
    10-Q2026-05-052026-03-310001193125-26-206364 ↗
    8-K2026-05-052026-05-050001193125-26-206420 ↗
    10-K2026-02-262025-12-310001193125-26-076495 ↗
    8-K2026-02-242026-02-240001193125-26-067012 ↗
    8-K2026-02-172026-02-170001193125-26-053049 ↗
    8-K2025-12-192025-12-190001193125-25-326778 ↗
    8-K2025-12-122025-12-120001193125-25-316904 ↗
    8-K2025-11-142025-11-130001193125-25-282889 ↗
    10-Q2025-11-052025-09-300001193125-25-267059 ↗