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CYTKNasdaq

CYTOKINETICS INC

Biopharma developer (SEC filing verified)·Commercial·South San Francisco, CA, United States·CEO: Mr. Robert I. Blum
CardiovascularInfectious DiseaseRespiratory

CYTK evidence brief

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Prepared research question

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BioSniper AI · CYTK

Cytokinetics is a late-stage biopharmaceutical company focused on discovering, developing, and commercializing first-in-class muscle activators and next-in-class muscle inhibitors for cardiovascular and neuromuscular diseases, with one approved product (MYQORZO) and a deep pipeline led by aficamten.

Key risk: Profitability uncertainty

5.8/10

BioSniper Score

Based on 6 of 6 signals

Market Cap

$10.02B

Cash Runway

21.3 mo

Financial data as of Jun 30, 2026.

Tracking 5 pipeline candidates · 16 clinical trials · 5 catalysts · 1 FDA decision for CYTOKINETICS INC.

AI OverviewAI overview is shown in English only.

Cytokinetics is a late-stage biopharmaceutical company focused on discovering, developing, and commercializing first-in-class muscle activators and next-in-class muscle inhibitors for cardiovascular and neuromuscular diseases, with one approved product (MYQORZO) and a deep pipeline led by aficamten.

  • Cytokinetics is a late-stage biopharmaceutical company focused on muscle-directed investigational medicines for cardiovascular and neuromuscular diseases [sec_mda · as of 2025-05-06].
  • The company has one approved product, MYQORZO, with commercial sales commencing in the first quarter of 2026 [sec_mda · as of 2026-08-06].
  • Cash, cash equivalents, and investments were $1.1 billion as of March 31, 2026 [sec_mda · as of 2026-05-05].
  • Net cash used in operations was $145.5 million for the three months ended March 31, 2026 [sec_mda · as of 2026-05-05].
  • Accumulated deficit was approximately $3.5 billion since inception as of February 2026 [sec_mda · as of 2026-02-26].

What works

  • Cytokinetics has a late-stage pipeline with multiple Phase 3 trials for aficamten, targeting a large market in hypertrophic cardiomyopathy [sec_mda · as of 2025-05-06].
  • The company has a substantial cash position of $1.1 billion as of March 31, 2026, providing runway for ongoing trials and commercial launch [sec_mda · as of 2026-05-05].
  • MYQORZO, the first approved product, began commercial sales in Q1 2026, generating initial revenue and validating the company's commercial capabilities [sec_mda · as of 2026-08-06].

What to weigh

  • Cytokinetics has incurred an accumulated deficit of approximately $3.5 billion since inception and there is no assurance of attaining profitability [sec_mda · as of 2026-02-26].
  • The company reported a net loss of $198.8 million for the six months ended June 30, 2025, and expects continued operating losses and net cash outflows [sec_mda · as of 2025-08-07].
  • Liquidity is dependent on revenues from MYQORZO and additional capital, which may not be available on acceptable terms [sec_mda · as of 2026-08-06].
  • The company faces risks common to biopharmaceutical companies, including dependence on key personnel and successful development of drug candidates [sec_mda · as of 2026-08-06].

From the filings

Quoted directly from source documents.

  • Cytokinetics is a late-stage biopharmaceutical company focused on muscle-directed medicines.

    We are a late-stage biopharmaceutical company focused on discovering, developing and commercializing first-in-class muscle activators and next-in-class muscle inhibitors as potential treatments for debilitating diseases in which muscle performance is compromised and/or declining.

    SEC MD&A · May 6, 2025

  • Cash position as of March 31, 2026 was $1.1 billion.

    Cash, cash equivalents, and investments was $ 1.1 billion as of March 31, 2026.

    SEC MD&A · May 5, 2026

  • Accumulated deficit was approximately $3.5 billion.

    We have incurred an accumulated deficit of approximately $3.5 billion since inception and there can be no assurance that we will attain profitability.

    SEC MD&A · February 26, 2026

  • MYQORZO commercial sales began in Q1 2026.

    We commenced commercial sales in the first quarter of 2026, but there can be no assurance as to the timing or level of revenues from such sales.

    SEC MD&A · August 6, 2026

Catalyst timeline

  • 2026-10-01 · Phase3_Topline — Phase 3 Topline: A Phase 3, Multi-Center, Randomized, Double-Blind Trial to Evaluate the Efficacy and Safety of AficaTopline results from a pivotal Phase 3 trial of aficamten; outcome will significantly impact the drug's regulatory and commercial prospects.
  • 2027-12-01 · Phase3_Topline — Phase 3 Topline: A Multi-Center, Double-Blind, Randomized, Placebo-Controlled Trial to Assess Efficacy and Safety ofAnother Phase 3 topline readout for aficamten in a different indication, expanding potential label.
  • 2028-03-01 · Phase3_Topline · aficamten — Phase 3 Topline: A Follow-Up, Open-Label, Research Evaluation of Sustained Treatment With Aficamten (CK-3773274) in HOpen-label extension data providing long-term safety and efficacy information for aficamten.
  • 2028-09-29 · Phase3_Topline — Phase 3 Topline: A Phase 3, Randomized, Open-label, Multicenter Trial to Evaluate the Efficacy, Safety, and TolerabilAdditional Phase 3 topline data for aficamten, further characterizing the drug's profile.
  • 2030-01-01 · Phase3_Topline — Phase 3 Topline: A Phase 2/3 Multicenter, Randomized, Double-Blind, Placebo-Controlled and Open-Label Extension TrialLong-term Phase 2/3 data for aficamten, including placebo-controlled and open-label extension phases.
Risks & what to watch (4)

Key risks

  • Profitability uncertaintyAccumulated deficit of ~$3.5B; no assurance of attaining profitability [sec_mda · as of 2026-02-26]
  • Liquidity dependence on MYQORZOFuture liquidity relies on MYQORZO revenues and additional capital, which may not be available [sec_mda · as of 2026-08-06]
  • Clinical and regulatory risksDevelopment of drug candidates like aficamten faces typical biopharma risks [sec_mda · as of 2026-08-06]
  • Dependence on key personnelCompany's success depends on retaining key scientific and management personnel [sec_mda · as of 2026-08-06]

What to watch

  • Phase 3 topline data for aficamten expected in October 2026, which will be a key catalyst for the pipeline [upcoming catalysts].
  • Commercial ramp of MYQORZO and its contribution to revenue, as sales began in Q1 2026 [sec_mda · as of 2026-08-06].
  • Cash burn rate and any additional financing activities, given net cash used in operations of $145.5M in Q1 2026 [sec_mda · as of 2026-05-05].

Sources: SEC filings · SEC MD&A · Generated August 29, 2026 · How we verify sources →

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Evidence & data

Score breakdownBased on 6 of 6 signals · derived from public data

Cash Runway5.9

21.3 months

Financial Health0.5

OCF -$160M · Net income -$199M

Pipeline Maturity10.0

Lead: Approved

Pipeline Breadth8.5

5 candidates

Catalyst Momentum10.0

5 upcoming, next in ~32d

Insider Signal0.0

0 buys · 51 sells (180d)

Runway

Catalysts

Pipeline

Regulatory

Financials

Institutional Holdings

Source: SEC Form 13F · as of Mar 2026

Institutional holders

446

Total value held

$9.22B

HolderSharesValue
blackrock, inc.16,548,011$1.09B
vanguard capital management llc10,977,268$723.5M
fmr llc10,723,140$706.8M
wellington management group llp8,009,489$527.9M
vanguard portfolio management llc5,843,782$385.2M
state street corp5,745,193$378.7M
geode capital management, llc3,215,415$212.0M
bank of america corp /de/3,125,436$206.0M
rtw investments, lp2,721,158$179.4M
armistice capital, llc2,664,538$175.6M

Showing top 10 of 446 institutional holders of CYTOKINETICS INC. Open the full 13F history after sign-in.

Short Interest

as of May 20, 2026
% of float
20.8%
Days to cover
9.3
Shares short
15,896,196
Daily short volume
-

Short percent of float and days-to-cover reflect reported short positioning. Daily short volume is the exchange-reported short share of a single day's trading volume and is noisier. See the most-shorted biotech ranking →

CYTK short interest

Governance

Frequently asked questions

What is the AI investment thesis for CYTOKINETICS INC?

Cytokinetics is a late-stage biopharmaceutical company focused on discovering, developing, and commercializing first-in-class muscle activators and next-in-class muscle inhibitors for cardiovascular and neuromuscular diseases, with one approved product (MYQORZO) and a deep pipeline led by aficamten.

What is CYTOKINETICS INC's lead drug candidate?

CYTOKINETICS INC's most advanced tracked candidate is Aficamten (Phase 3) for Symptomatic Hypertrophic Cardiomyopathy (HCM); Pediatric; Symptomatic Non-Obstructive Hypertrophic Cardiomyopathy.

What is CYTOKINETICS INC's next catalyst?

CYTOKINETICS INC's next tracked catalyst is a Phase3_Topline event — "Phase 3 Topline: A Phase 3, Multi-Center, Randomized, Double-Blind Trial to Evaluate the Efficacy and Safety of Afica" — expected October 1, 2026.

Who is the CEO of CYTOKINETICS INC?

Mr. Robert I. Blum is the chief executive officer of CYTOKINETICS INC (CYTK).

Where is CYTOKINETICS INC headquartered?

CYTOKINETICS INC (CYTK) is headquartered in South San Francisco, CA, United States.

925 companies232,681 SEC filings21,419 clinical trials100% citation-verification pass rate (7d)How we verify →

The AI overview and BioSniper Score are neutral, data-derived signals built from public SEC filings, ClinicalTrials.gov and FDA records — not investment advice.