ITS
InsiderTrading
TradesInsidersCompaniesCluster BuysRankingsAbout
ITS
InsiderTrading Screener

Track SEC Form 4 insider trades. See what corporate insiders are buying and selling.

Browse

  • Trades
  • Insiders
  • Companies
  • Cluster Buys
  • Rankings

Top Insiders

  • Mark Zuckerberg
  • Elon Musk
  • Jamie Dimon
  • Satya Nadella
  • Lisa Su
  • Jensen Huang

Screeners

  • CEO & CFO Purchases
  • Director Purchases
  • Top Buys This Week
  • Top Sales This Week
  • 10b5-1 Trades
  • Buy/Sell Ratios
  • Politician Overlap
  • Sectors

Learn

  • Learn
  • What is a Form 4?
  • About & Methodology
  • What are Cluster Buys?
  • Top Insider Rankings
  • Contact Us
  • Privacy Policy
  • Terms of Use

Data

  • SEC EDGAR Form 4 ↗
  • CongressStock.com ↗
  • Track13F.com ↗
  • About the data
© 2026 InsiderTradingScreener.com. Data from SEC EDGAR Form 4 filings.For informational purposes only. Not financial advice.
Home/Insiders/Lee Sung

Lee Sung

Insider

Insider
Total trades
23
Bought (open market)
$0
Sold (open market)
$5.7M
Tickers traded
2

12-month activity

Monthly buy vs sell totals from Lee Sung's Form 4 filings.

BuysSellsFilings with no price (gifts, grants)
Show data table
MonthBuysSellsFilings
October 2025$0$00
November 2025$0$00
December 2025$0$03
January 2026$0$02
February 2026$0$00
March 2026$0$307K4
April 2026$0$02
May 2026$0$1.8M1
June 2026$0$3.5M14
July 2026$0$98K2
August 2026$0$00
September 2026$0$00

Recent trades

Most recent Form 4 filings by Lee Sung.

  • Lee Sungsold1,112 shares ofCYTKat $87.79$98KJul 1 · filed Jul 2Details
  • Lee Sungexercised1,112 shares ofCYTKat $48.51$54KJul 1 · filed Jul 2Details
  • Lee Sungsold3,134 shares ofCYTKat $85$266KJun 29Details

Explore insider screeners

Latest CEO & CFO PurchasesLatest CEO & CFO SalesDirector PurchasesOfficer PurchasesTop Purchases This WeekTop Sales This WeekTop Officer Buys (Month)10% Owner Filings10b5-1 Planned TradesDiscretionary TradesBuy/Sell RatiosPolitician-Insider Overlap
Lee Sung
exercised
823 shares of
CYTK
at $44.36
$37KJun 29Details
  • Lee Sungexercised1,113 shares ofCYTKat $48.51$54KJun 29Details
  • Lee Sungexercised822 shares ofCYTKat $44.36$36KJun 29Details
  • Lee Sungexercised188 shares ofCYTKat $44.36$8KJun 29Details
  • Lee Sungexercised23,370 shares ofCYTKat $48.51$1.1MJun 24 · filed Jun 29Details
  • Lee Sungsold38,730 shares ofCYTKat $82.3$3.2MJun 24 · filed Jun 29Details
  • Lee Sungexercised822 shares ofCYTKat $44.36$36KJun 24 · filed Jun 29Details
  • Lee Sungexercised188 shares ofCYTKat $44.36$8KJun 24 · filed Jun 29Details
  • Lee Sungexercised1,113 shares ofCYTKat $48.51$54KJun 24 · filed Jun 29Details
  • Lee Sungexercised2,817 shares ofCYTKat $44.36$125KJun 24 · filed Jun 29Details
  • Lee Sungexercised9,307 shares ofCYTKat $44.36$413KJun 24 · filed Jun 29Details
  • Lee Sunggranted3,570 shares ofTNGXat $0Jun 5 · filed Jun 8Details
  • Lee Sunggranted570 shares ofTNGXat $0Jun 5 · filed Jun 8Details
  • Lee Sungsold23,906 shares ofCYTKat $76.87$1.8MMay 5Details
  • Lee Sunggranted5,200 shares ofTNGXat $0Apr 29 · filed May 1Details
  • Lee Sunggranted12,300 shares ofTNGXat $0Apr 29 · filed May 1Details
  • Lee Sungsold4,935 shares ofCYTKat $62.15$307KMar 17 · filed Mar 18Details
  • View all 23 trades →