GRAIL, Inc. (GRAL) Insider Ownership

Historic Ownership Trends

Over the 90-day window ending December 12, 2025, GRAIL's three dominant insider ownership positions are held by TenPercentOwner Inc. Illumina, (3.50Mn shares), TenPercentOwner Chun R Ding (3.31Mn shares), Chief Executive Officer Robert P Ragusa (688.03K shares).

Top Direct Holders

Insider ownership data is derived from the last 60 months of Form 4 SEC filings.
Holder Position Shares Report Date
Inc. Illumina, 3,502,126 18 Nov, 2025
Chun R Ding 3,305,055 03 Jul, 2025
Robert P Ragusa Chief Executive Officer 688,029 05 Dec, 2025
Joshua J. Ofman President 368,818 05 Dec, 2025
Aaron Freidin Chief Financial Officer 259,077 05 Dec, 2025
Gregory L Summe 38,794 16 Oct, 2025
Sarah Krevans 37,137 30 May, 2025
William J Chase 36,590 16 Oct, 2025
Steven Mizell 36,469 16 Oct, 2025

* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.

Recent Insider Transactions

Detailed insider trading activity based on Form 4 SEC filings.
Download Data
Transaction Date Insider Name Security Class Transaction Type Shares Traded Price Shares Remaining Ownership Code
03 Dec, 2025 Aaron Freidin Common Stock D 25,000 $99.15 259,077 D S
03 Dec, 2025 Robert P Ragusa Common Stock D 14,807 $94.43 713,222 D S
03 Dec, 2025 Joshua J. Ofman Common Stock D 13,000 $100.00 368,818 D S
03 Dec, 2025 Robert P Ragusa Common Stock D 15,356 $95.28 697,866 D S
03 Dec, 2025 Robert P Ragusa Common Stock D 8,233 $96.22 689,633 D S
03 Dec, 2025 Robert P Ragusa Common Stock D 1,604 $97.28 688,029 D S
17 Nov, 2025 Inc. Illumina, Common stock, par value $0.001 per share D 1,000,000 $79.85 3,502,126 D S
17 Nov, 2025 Aaron Freidin Common Stock D 1,697 $79.20 284,077 D S
15 Oct, 2025 Joshua J. Ofman Common Stock D 8,865 $76.03 387,932 D S
15 Oct, 2025 Gregory L Summe Common Stock A 425 $75.52 38,794 D A
15 Oct, 2025 William J Chase Common Stock A 275 $75.52 36,590 D A
15 Oct, 2025 Robert P Ragusa Common Stock D 7,239 $68.88 727,388 D S
15 Oct, 2025 Steven Mizell Common Stock A 267 $75.52 36,469 D A
16 Oct, 2025 Joshua J. Ofman Common Stock D 6,114 $82.01 381,818 D S
06 Oct, 2025 Joshua J. Ofman Common Stock D 81,385 $62.50 396,797 D S
02 Oct, 2025 Joshua J. Ofman Common Stock D 9,692 $64.00 478,182 D S
19 Aug, 2025 Aaron Freidin Common Stock D 877 $32.02 285,143 D S
19 Aug, 2025 Joshua J. Ofman Common Stock D 4,202 $32.02 487,874 D S
15 Jul, 2025 Aaron Freidin Common Stock D 8,000 $38.93 286,020 D S
15 Jul, 2025 Steven Mizell Common Stock A 517 $38.53 36,202 D A