GRAL · Insider Trading

GRAIL, Inc. Common Stock

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Every open-market purchase and sale reported by GRAL officers, directors and 10%+ beneficial owners on SEC Form 4, which must be filed within two business days of the transaction. Sales often reflect scheduled 10b5-1 plans or tax withholding rather than a directional view, so read counts alongside the size and the filer.

Form 4 Filings

most recent

Open-Market Buys

code P

Sales

code S

Reporting Insiders

current holders

GRAL — Recent Form 4 Transactions (latest 2026-10-16)

Filed	Insider	Role	Type	Shares	Value
2026-10-16	Gregory L Summe	Director	A	+237	+$32.10K
2026-10-16	Steven Mizell	Director	A	+148	+$20.05K
2026-10-16	William J Chase	Director	A	+153	+$20.73K
2026-10-16	Joshua J. Ofman	Chief Executive Officer	Sell	−20,000	−$2.74M
2026-10-07	Aaron Freidin	Chief Financial Officer	Sell	−23,619	−$3.46M
2026-10-07	Andrew John Partridge	Chief Growth Officer	Sell	−7,873	−$1.15M
2026-09-23	Joshua J. Ofman	Chief Executive Officer	MIXED	−35,000	−$5.64M
2026-09-23	Aaron Freidin	Chief Financial Officer	Sell	−4,100	−$382.68K
2026-08-31	Aaron Freidin	Chief Financial Officer	Sell	−7,900	−$671.58K
2026-08-31	Joshua J. Ofman	Chief Executive Officer	Sell	−5,000	−$425.10K
2026-07-16	Gregory L Summe	Director	A	+427	+$31.75K
2026-07-16	William J Chase	Director	A	+276	+$20.52K
2026-07-16	Steven Mizell	Director	A	+268	+$19.93K

GRAL — Current Insider Holders

Insider	Role	Shares Held	Value
Joshua J. Ofman	Chief Executive Officer	342,271	$44.47M
Aaron Freidin	Chief Financial Officer	225,364	$29.28M
Andrew John Partridge	Chief Growth Officer	155,865	$20.25M
Gregory L Summe	Director	45,909	$5.96M
William J Chase	Director	43,131	$5.60M
Steven Mizell	Director	42,978	$5.58M

GRAL Insider Trading FAQ

Who are the insiders at GRAL?

6 officers, directors and 10%+ beneficial owners currently report holdings in GRAL via SEC Form 4.

Are GRAL insiders buying or selling?

Across the 13 most recent Form 4 filings for GRAL, 0 were open-market purchases (code P) and 6 were sales (code S). Sales frequently reflect scheduled 10b5-1 plans or tax withholding rather than a view on the stock.

How current is GRAL insider data?

Form 4 must be filed within two business days of the transaction, so this is close to real time. The most recent GRAL filing is dated 2026-10-16.

How to read Form 4 activity

Form 4 reports a change in beneficial ownership by an officer, director or 10%+ holder, and must be filed within two business days of the transaction — so this is close to real time, unlike the 45-day-lagged 13F institutional data.

Transaction codes matter more than the raw buy/sell count. Code P is an open-market purchase — an insider choosing to buy with their own money, which is the signal most research treats as informative. Code S is a sale, but sales are frequently pre-scheduled under a 10b5-1 plan or cover tax withholding on vesting equity, so a run of sales often says nothing directional. Codes A and M are grants and option exercises rather than open-market decisions.

Full filing history and per-insider positions are on the GRAL quote page; the site-wide leaderboard is on the insider transactions hub.