Chun R. Ding

Chun R. Ding is 10% Owner at GRAIL, Inc. (GRAL). They have made 2 open-market trades across 1 company since 2024, most recently 2025-07-01.

CIK 0001250077

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Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.

1 open-market purchase totalling $1.6M since 2024, against 1 sale. Too few scored purchases to measure a record yet.

Current Position

Ticker	Shares	Value
GRAL	3,332,898	$392.4M
CLUB	1,021,256	$26.9M
ARC	67,813	$230K
Total		$419.5M

Shares reported on the most recent Form 4, priced at the 2025-07-03 close.

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Buy Track Record

Filings1

Only 1 discretionary filing — too few to score

Discretionary filings only. 10b5-1 plan trades, tax withholding and option exercises are excluded, and each column is one row per filing rather than per execution lot.

Sell Track Record

Filings1

Only 1 decision-sell filing — too few to score

Decision sells only — a first sale after buying the stock, or a sale by a fund or 10% owner. Ordinary sales by officers and directors show no relationship to what the stock does next, so they are counted but not scored.