Lyell Immunopharma Ownership & Insider Activity

Lyell Immunopharma (LYEL) institutional and insider ownership, recent insider transactions and ownership breakdown.

Insiders own 21.1% of shares outstanding. Institutional investors hold 12.4%. Over the past 90 days, insiders made 9 sales worth $215K.

Shares Outstanding

24.505M

Shares Float

20.986M

Insider Shares Owned

5.170M

Insider % Owned

21.1%

Institutional Shares Held

3.049M

Institutional % Held

12.4%

Ownership Breakdown

Net Insider Activity by Month

Purchases (90d)

Sales (90d)

$215K total

Net Activity

Net Selling

Net Value (90d)

-$215K

Lyell Immunopharma Insider Transactions (Last 6 Months)

Date	Insider	Title	Type	Shares	Price	Value
Oct 12, 2026	Mattieu Jarrad Aguirre	CHIEF MEDICAL OFFICER	SELL	422.000	$8.63	$4K
Sep 10, 2026	David Shook	CHIEF MEDICAL OFFICER	SELL	500.000	$12.70	$6K
Aug 21, 2026	Lynn Seely	PRESIDENT AND CEO	SELL	9.589K	$15.54	$149K
Aug 21, 2026	Stephen Hill	CHIEF OPERATING OFFICER	SELL	989.000	$15.54	$15K
Aug 21, 2026	Gary Lee	CHIEF SCIENTIFIC OFFICER	SELL	1.457K	$15.54	$23K
Aug 10, 2026	Sanchez Veronica Bulis	VP, CORPORATE CONTROLLER	SELL	621.000	$14.34	$9K
Aug 10, 2026	Gary Lee	CHIEF SCIENTIFIC OFFICER	SELL	131.000	$14.34	$2K
Aug 10, 2026	Stephen Hill	CHIEF OPERATING OFFICER	SELL	89.000	$14.34	$1K
Aug 10, 2026	Lynn Seely	PRESIDENT AND CEO	SELL	390.000	$14.34	$6K
Jul 17, 2026	Innovative Cellular Therapeutics Holdings Ltd	—	SELL	10.000	$13.70	$137
Jul 16, 2026	Innovative Cellular Therapeutics Holdings Ltd	—	SELL	10.000	$13.73	$137
Jun 10, 2026	David Shook	CHIEF MEDICAL OFFICER	SELL	1.977K	$12.64	$25K
May 11, 2026	Lynn Seely	PRESIDENT AND CEO	SELL	388.000	$18.91	$7K
May 11, 2026	Gary Lee	CHIEF SCIENTIFIC OFFICER	SELL	130.000	$18.92	$2K
May 11, 2026	Stephen Hill	CHIEF OPERATING OFFICER	SELL	89.000	$18.92	$2K
May 11, 2026	Sanchez Veronica Bulis	VP, CORPORATE CONTROLLER	SELL	217.000	$18.91	$4K