$CYTK

Lee Sung sold $3.2M of CYTK

Lee Sung (EVP, Chief Financial Officer) sold 38,730 shares of CYTOKINETICS INC (CYTK) at $82.30 ($3.19M total) on 2026-06-24 under a Rule 10b5-1 trading plan.

Original reporting
SEC EDGAR · Lee Sung
Published Jun 29, 2026, 10:05 PM UTC
Analysis
alphai AI DeskAI-generated
Added to alphai Jun 29, 2026, 10:10 PM UTC. Informational, not investment advice.
How this was made
alphai summarizes source reporting and applies a structured AI analysis for relevance, timing, sentiment and ticker impact. Always verify material claims with the original publisher.
alphai market briefInsider activity
Primary signal
$CYTK
Neutral
medium confidence
Mentioned
$CYTK
Relevance
5/10
alphai data visualization · based on SEC EDGAR
Decision brief

The 30-second read

$CYTKNeutralLow
01

Why it matters

Confirms a CFO open-market sale executed under a pre-arranged 10b5-1 plan; typically lower informational content than unscheduled selling.

02

Market read

Useful for tracking insider behavior, but unlikely to drive a fundamental repricing by itself.

03

What to watch

Traders should check whether the sale size is unusual relative to prior Form 4 activity and whether there are concurrent insider buys or new company disclosures.

Relevance 5/10Novelty 5/10Timing: new Form 4 filed 2026-06-29 (sale executed 2026-06-24)

Background

The article is a SEC Form 4 insider transaction disclosure for Cytokinetics, Inc.

Company-level read

Ticker impact

$CYTKNeutralMedium confidence
Context

CYTOK insider Lee Sung (CFO) sold 38,730 shares in an open-market transaction at $82.30 on 2026-06-24 under a 10b5-1 plan.

Expected impact

Likely minimal price impact; any effect is short-lived unless paired with other fundamental news.

Evidence & confidence

The filing is a Form 4 insider transaction with a pre-arranged 10b5-1 plan; while it confirms selling activity, it does not disclose new operating or financial information.

Market effects

No clear sector read-through; this is company-specific insider liquidity activity.

None.

None.

Counterpoint

Because the sale is under a 10b5-1 plan, it may reflect scheduled diversification rather than bearish expectations.

Key entities

  • CYTOKINETICS INC

    Company whose CFO insider transaction is disclosed on Form 4.

  • Lee Sung

    EVP, Chief Financial Officer; reported open-market sale of CYTK shares under a 10b5-1 plan.

Full insider trading history

This story covers one filing. See everything behind it: every insider buy and sell on record, 10b5-1 plans, late filings, and which officers and directors are trading.

Related articles

MedAI 9/10

Cytokinetics Posts First Full MYQORZO Quarter as Armistice Capital Adds to Its Position

Cytokinetics reported $25.3M in MYQORZO sales for Q2, with 700+ healthcare providers prescribing it. Armistice Capital increased its stake by 57% to 1.2M shares. The company plans to submit a supplemental drug application for non-obstructive HCM in Q4 2026. Total revenue fell to $28.6M from $66.8M YoY due to lower collaboration payments. Cytokinetics ended Q2 with $1.7B in cash and investments.

$CYTKMedAI 8/10

Why Cytokinetics (CYTK) Stock Is Down Today

Cytokinetics (CYTK) shares fell 7.7% following the release of full Phase 3 ACACIA-HCM trial data for aficamten, which met primary endpoints but showed treatment interruptions and adverse events. The next milestone is a 2026 FDA filing. Investors may have already priced in positive topline results from May.

$CYTKMedAI 8/10

CYTK Looks 64.3% Undervalued on GF Value™ Despite Profitability

Cytokinetics Inc (CYTK) saw its stock decline after detailed Phase 3 trial data for Myqorzo was released. The company plans to file an FDA application in Q4 2026. CYTK trades at a high P/S ratio of 136.11, with a GF Value™ suggesting it is 64.3% undervalued. The GF Score™ is 51/100, indicating moderate fundamentals with weak profitability and financial strength. Insiders have sold $43.7M in shares, while 8 gurus hold positions, with mixed activity.

$CAPRMedAI 8/10

Capricor shares spike on CEO comments; Cytokinetics sues Bristol Myers

Capricor Therapeutics shares rose over 60% after CEO Linda Marbán said the FDA is willing to review an amended deramiocel submission for Duchenne muscular dystrophy, with an Aug. 22 decision deadline. Cytokinetics sued Bristol Myers Squibb over patents tied to Myqorzo. Valneva gained after EMA accepted a Pfizer vaccine application. Other updates covered funding, licensing, and drug availability.

$CYTKMedAI 8/10

Cytokinetics (CYTK) Q2 2026 Earnings Call Transcript

Cytokinetics (CYTK) reported Q2 2026 revenue of $28.6M, down from $66.8M in 2025 due to fewer Bayer milestone payments, with MYQORZO net product revenue of $25.3M. Cash and investments were $1.7B after a May offering. Operating expense guidance was raised to $860M-$890M; net loss was $198.8M. MYQORZO new-to-brand share exceeded 40% in June.

$CYTKMedAI 8/10

CYTOKINETICS INC (CYTK): Results of Operations and Financial Condition

CYTOKINETICS INC (CYTK) filed an SEC Form 8-K — Results of Operations and Financial Condition. Cytokinetics Reports Second Quarter 2026 Financial Results and Provides Business Update MYQORZO ® (aficamten) Net Product Revenue of $25 Million Full Results from ACACIA-HCM to be Presented in Hot Line Session at ESC; Expect to Submit Supplemental NDA for Aficamten in Non-Obstruc