CD
Insider
Chun R Ding
10% ownerChun R Ding (10% owner) filed 2 Form 4 reports in the past 24 months (1 purchase, 1 sale, 1 filed past the two-business-day deadline), most often in GRAIL, Inc. (GRAL). Across 1 priced purchase filing, the average 21-session return was -5.0% from execution and +15.4% from disclosure (delay-adjusted; derived). The largest single filing was $16.8M of GRAL (339,800 sh across 3 lots, as filed), executed Jul 1 2025.
Add to watchlistReturn, ttmiAverage return per filing, trailing twelve months
-5.0%
avg across 1 priced filings
Delay-adjustediThe same average, entered at disclosure dates
+15.4%
same 1 filings, from disclosure
Filings, ttm
2
1 buys · 1 sells · 1 late
Median delay
9d
execution → disclosure
Volume, ttmiDollar value disclosed in the trailing twelve months
$17.9M
shares × price, as filed
Last traded
Jul 1 2025
Filed Jul 3 2025
Median ADV $55.8M across their filed names
Open performance→Volume by month
Buys $1.0M
Sells $16.8M
Shares × price, as filed · by filing month · past 24 months
Sectors filed on
Healthcare
2 filings
Sector per market data · by filing · past 24 months
Most traded names
GRALRecent filings
GRALSALE
GRAIL, Inc.
View filing →
$16.8M339,800 sh across 3 lots
Exec Jul 1 2025
Filed Jul 3 2025 · 5:30 PM ET GRALPURCHASE GRAIL, Inc. View filing → $1.0M
78,829 sh across 4 lots
Exec Oct 1 2024
Filed Oct 10 2024 · 5:30 PM ET †