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Sung Lee

CYTK
EVP, CHIEF FINANCIAL OFFICER · CYTOKINETICS INC · CIK 0001793200
FILING MIX · LIFETIME61%/39%
BUYS
37
SELLS
24
TOTAL VALUE
$8.21M
COMPANIES
4
ACTIVE SINCE
Feb 2020
HOLDINGS NOW
257,103
AVG SELL PX
$67.48
TRADE KIND
SHOWING 61 / 61
Trades · vs SPY
Loading price series…
Performance · forward returns vs SPY
3 backtested trades · 8 horizons · 7 pendingHow are these numbers computed? →
Forward-return performance of every backtestable P/S trade by Sung Lee, measured at 8 horizons from 7 days to 2 years. Deduped per economic event so co-filings count once. Excess return = trade return minus SPY return over the same window.
HORIZONTRADESWIN RATEINSIDER RETURNSPY RETURNMEAN EXCESSMEDIAN EXCESST-STAT
7d3+100.00%-3.47%-0.45%-3.02%-3.34%—
14d3+66.67%-2.13%-2.39%+0.43%+0.43%—
30d3+66.67%-7.08%+0.88%-7.49%-7.49%—
60d3+0.00%+12.91%+4.92%+7.99%+9.29%—
90d3(1 pending)+50.00%+1.30%+7.53%-6.23%-6.23%—
180d3(2 pending)+100.00%-24.75%+9.57%-34.33%-34.33%—
1y3(2 pending)+100.00%-33.96%+9.77%-43.73%-43.73%—
2y3(2 pending)+100.00%-16.83%+22.74%-39.58%-39.58%—
How to read this: Insider Returnis the average raw return of the filer's trades over the horizon. SPY Return is what SPY did over those same windows — reference only, not a comparison. The headline alpha number is Mean Excess = Insider − SPY; green means the filer beat SPY, red means they trailed it. Win rate is the share of individual trades where the filer beat SPY. T-statvalues above 2 mean the alpha is unlikely to be chance given the sample size. "Pending" counts trades where the horizon hasn't elapsed yet; their stats are not included in the row average.
Holdings over time
CYTK · 64,333 shares · as of Jul 1, 2026
025,48850,97676,463101,95120252026SHARES HELD
Trading cadence · quarterly flow
BUY ● SELL ●
2020
2020
2020
2020
2021
2021
2021
2021
2022
2022
2022
2022
2023
2023
2023
2023
2024
2024
2024
2024
2025
2025
2025
2025
2026
2026
2026
FLOW · 37 buys / 24 sellsCOVERAGE · 27 quarters
Form 4 filings · all activity
COMPANYTYPESHARESPRICEVALUEHELD AFTERTRADE DATEFILEDDETAILS
CYTK
CYTOKINETICS INC
SALE
EVP, Chief Financial Officer
1,112——26,709Jul 1, 2026Jul 2, 2026 ↗View →
CYTK
CYTOKINETICS INC
PURCHASE
EVP, Chief Financial Officer
1,112$48.51$53.9K64,333Jul 1, 2026Jul 2, 2026 ↗View →
CYTK
CYTOKINETICS INC
SALE10b5-1
10b5-1 plan
1,112$87.79$97.6K63,221Jul 1, 2026Jul 2, 2026 ↗View →
CYTK
CYTOKINETICS INC
SALE10b5-1
10b5-1 plan
3,134$85.00$266.4K63,221Jun 29, 2026Jun 29, 2026 ↗View →
CYTK
CYTOKINETICS INC
SALE
EVP, Chief Financial Officer
823——39,681Jun 29, 2026Jun 29, 2026 ↗View →
CYTK
CYTOKINETICS INC
SALE
EVP, Chief Financial Officer
822——40,504Jun 29, 2026Jun 29, 2026 ↗View →
CYTK
CYTOKINETICS INC
SALE
EVP, Chief Financial Officer
188——8,828Jun 29, 2026Jun 29, 2026 ↗View →
CYTK
CYTOKINETICS INC
SALE
EVP, Chief Financial Officer
188——8,640Jun 29, 2026Jun 29, 2026 ↗View →
CYTK
CYTOKINETICS INC
PURCHASE
EVP, Chief Financial Officer
1,113$48.51$54.0K65,344Jun 29, 2026Jun 29, 2026 ↗View →
CYTK
CYTOKINETICS INC
PURCHASE
EVP, Chief Financial Officer
822$44.36$36.5K64,231Jun 29, 2026Jun 29, 2026 ↗View →
CYTK
CYTOKINETICS INC
PURCHASE
EVP, Chief Financial Officer
823$44.36$36.5K66,355Jun 29, 2026Jun 29, 2026 ↗View →
CYTK
CYTOKINETICS INC
SALE
EVP, Chief Financial Officer
1,113——52,304Jun 29, 2026Jun 29, 2026 ↗View →
CYTK
CYTOKINETICS INC
PURCHASE
EVP, Chief Financial Officer
188$44.36$8.3K65,532Jun 29, 2026Jun 29, 2026 ↗View →
CYTK
CYTOKINETICS INC
PURCHASE
EVP, Chief Financial Officer
188$44.36$8.3K63,409Jun 29, 2026Jun 29, 2026 ↗View →
CYTK
CYTOKINETICS INC
SALE10b5-1
10b5-1 plan
38,730$82.30$3.19M63,221Jun 24, 2026Jun 29, 2026 ↗View →
CYTK
CYTOKINETICS INC
PURCHASE
EVP, Chief Financial Officer
9,307$44.36$412.9K95,898Jun 24, 2026Jun 29, 2026 ↗View →
CYTK
CYTOKINETICS INC
SALE
EVP, Chief Financial Officer
9,307——32,019Jun 24, 2026Jun 29, 2026 ↗View →
CYTK
CYTOKINETICS INC
SALE
EVP, Chief Financial Officer
822——31,197Jun 24, 2026Jun 29, 2026 ↗View →
CYTK
CYTOKINETICS INC
PURCHASE
EVP, Chief Financial Officer
23,370$48.51$1.13M86,591Jun 24, 2026Jun 29, 2026 ↗View →
CYTK
CYTOKINETICS INC
SALE
EVP, Chief Financial Officer
2,817——6,199Jun 24, 2026Jun 29, 2026 ↗View →
CYTK
CYTOKINETICS INC
PURCHASE
EVP, Chief Financial Officer
2,817$44.36$125.0K98,715Jun 24, 2026Jun 29, 2026 ↗View →
CYTK
CYTOKINETICS INC
PURCHASE
EVP, Chief Financial Officer
822$44.36$36.5K100,838Jun 24, 2026Jun 29, 2026 ↗View →
CYTK
CYTOKINETICS INC
SALE
EVP, Chief Financial Officer
188——6,011Jun 24, 2026Jun 29, 2026 ↗View →
CYTK
CYTOKINETICS INC
SALE
EVP, Chief Financial Officer
23,370——30,047Jun 24, 2026Jun 29, 2026 ↗View →
CYTK
CYTOKINETICS INC
SALE
EVP, Chief Financial Officer
1,113——27,821Jun 24, 2026Jun 29, 2026 ↗View →
CYTK
CYTOKINETICS INC
SALE
EVP, Chief Financial Officer
1,113——28,934Jun 24, 2026Jun 29, 2026 ↗View →
CYTK
CYTOKINETICS INC
PURCHASE
EVP, Chief Financial Officer
188$44.36$8.3K100,016Jun 24, 2026Jun 29, 2026 ↗View →
CYTK
CYTOKINETICS INC
PURCHASE
EVP, Chief Financial Officer
1,113$48.51$54.0K101,951Jun 24, 2026Jun 29, 2026 ↗View →
CYTK
CYTOKINETICS INC
PURCHASE
EVP, Chief Financial Officer
1,113$48.51$54.0K99,828Jun 24, 2026Jun 29, 2026 ↗View →
TNGX
TANGO THERAPEUTICS, INC.
PURCHASEGRANT
Stock grant
570——22,870Jun 5, 2026Jun 8, 2026 ↗View →
TNGX
TANGO THERAPEUTICS, INC.
PURCHASEGRANT
Stock grant
3,570——3,570Jun 5, 2026Jun 8, 2026 ↗View →
CYTK
CYTOKINETICS INC
SALE10b5-1
10b5-1 plan
23,906$76.87$1.84M63,221May 5, 2026May 5, 2026 ↗View →
TNGX
TANGO THERAPEUTICS, INC.
PURCHASEGRANT
Stock grant
12,300——22,300Apr 29, 2026May 1, 2026 ↗View →
TNGX
TANGO THERAPEUTICS, INC.
PURCHASEGRANT
Stock grant
5,200——5,200Apr 29, 2026May 1, 2026 ↗View →
CYTK
CYTOKINETICS INC
SALE
EVP, Chief Financial Officer
4,935$62.15$306.7K87,127Mar 17, 2026Mar 18, 2026 ↗View →
CYTK
CYTOKINETICS INC
PURCHASEGRANT
Stock grant
20,646——92,062Mar 15, 2026Mar 17, 2026 ↗View →
CYTK
CYTOKINETICS INC
PURCHASEGRANT
Stock grant
29,480——29,480Mar 15, 2026Mar 17, 2026 ↗View →
CYTK
CYTOKINETICS INC
PURCHASEGRANT
Stock grant
1,665——1,665Mar 15, 2026Mar 17, 2026 ↗View →
TNGX
TANGO THERAPEUTICS, INC.
PURCHASEGRANT
Stock grant
60,000——60,000Jan 2, 2026Jan 6, 2026 ↗View →
TNGX
TANGO THERAPEUTICS, INC.
PURCHASEGRANT
Stock grant
10,000——10,000Jan 2, 2026Jan 6, 2026 ↗View →
CYTK
CYTOKINETICS INC
PURCHASEGRANT
Stock grant
2,152——72,221Dec 22, 2025Dec 29, 2025 ↗View →
CYTK
CYTOKINETICS INC
PURCHASEGRANT
Stock grant
2,152——70,069Dec 22, 2025Dec 29, 2025 ↗View →
CYTK
CYTOKINETICS INC
SALE
EVP, Chief Financial Officer
805$62.72$50.5K71,416Dec 22, 2025Dec 29, 2025 ↗View →
CYTK
CYTOKINETICS INC
SALE
EVP, Chief Financial Officer
1,560$65.02$101.4K67,917Dec 3, 2025Dec 5, 2025 ↗View →
CYTK
CYTOKINETICS INC
SALE
EVP, Chief Financial Officer
4,965$31.21$155.0K69,477Jun 2, 2025Jun 3, 2025 ↗View →
CYTK
CYTOKINETICS INC
PURCHASEGRANT
Stock grant
32,687——74,442Mar 14, 2025Mar 18, 2025 ↗View →
CYTK
CYTOKINETICS INC
PURCHASEGRANT
Stock grant
9,016——9,016Mar 14, 2025Mar 18, 2025 ↗View →
CYTK
CYTOKINETICS INC
PURCHASEGRANT
Stock grant
41,326——41,326Mar 14, 2025Mar 18, 2025 ↗View →
CYTK
CYTOKINETICS INC
PURCHASEGRANT
Stock grant
4,303——38,987Dec 3, 2024Dec 5, 2024 ↗View →
CYTK
CYTOKINETICS INC
PURCHASEGRANT
Stock grant
4,304——41,755Dec 3, 2024Dec 5, 2024 ↗View →
CYTK
CYTOKINETICS INC
SALE
EVP, Chief Financial Officer
1,536$51.51$79.1K37,451Dec 3, 2024Dec 5, 2024 ↗View →
CYTK
CYTOKINETICS INC
PURCHASEGRANT
Stock grant
53,417——53,417May 31, 2024Jun 3, 2024 ↗View →
CYTK
CYTOKINETICS INC
PURCHASEGRANT
Stock grant
34,684——34,684May 31, 2024Jun 3, 2024 ↗View →
VIR
VIR BIOTECHNOLOGY, INC.
SALE
EVP & Chief Financial Officer
6,008$9.89$59.4K100,492Mar 27, 2024Mar 28, 2024 ↗View →
VIR
VIR BIOTECHNOLOGY, INC.
PURCHASEGRANT
Stock grant
80,000——80,000Feb 22, 2024Feb 26, 2024 ↗View →
VIR
VIR BIOTECHNOLOGY, INC.
PURCHASEGRANT
Stock grant
40,000——106,500Feb 22, 2024Feb 26, 2024 ↗View →
VIR
VIR BIOTECHNOLOGY, INC.
PURCHASEGRANT
Stock grant
133,000——133,000Mar 27, 2023Mar 29, 2023 ↗View →
VIR
VIR BIOTECHNOLOGY, INC.
PURCHASEGRANT
Stock grant
66,500——66,500Mar 27, 2023Mar 29, 2023 ↗View →
SGMO
SANGAMO THERAPEUTICS, INC
SALE
EVP, Chief Financial Officer
5,042$9.77$49.3K88,708Nov 25, 2020Nov 30, 2020 ↗View →
SGMO
SANGAMO THERAPEUTICS, INC
PURCHASEGRANT
Stock grant
50,000——93,750Feb 25, 2020Feb 26, 2020 ↗View →
SGMO
SANGAMO THERAPEUTICS, INC
PURCHASEGRANT
Stock grant
100,500——100,500Feb 25, 2020Feb 26, 2020 ↗View →
Other insiders · CYTK
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About this filer
CIK 0001793200
ROLE
EVP, Chief Financial Officer
PRIMARY
CYTK
COMPANIES
4
ACTIVE SINCE
Feb 2020
MARKETPEEL · /INSIDER/0001793200DATA · SEC EDGAR · FORM 4 · CONSOLIDATED TAPE
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