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Who

Gary K. Lee

Chief Scientific Officer

Company insider

Files Form 4 as: Chief Scientific Officer, Lyell Immunopharma.

In numbers

Trades disclosed
29
Buys
0
Sells
9
Bought
$0
Sold
$159K
Companies
1
Companies where not an officer
0
First trade
11 Feb 2022
Last trade
21 Aug 2026
Last filed
25 Aug 2026

Companies traded

Where they are an officer
LYEL Lyell ImmunopharmaOfficer · Biotechnology · last 21 Aug 20260 buys · 9 sells

Activity over time

1 Aug 2025 – 1 Oct 2026
30Aug 25Dec 25Mar 26Jul 26Oct 26

Buys above the line, sells below, each month.

Every trade

TradedCompanyWhatAmount
21 Aug 2026filed 25 Aug 2026LYEL Lyell ImmunopharmaBiotechnologySEC FORM 4 Sold$23K1,457 at $15.54filing
21 Aug 2026filed 25 Aug 2026LYEL Lyell ImmunopharmaBiotechnologySEC FORM 4 Sold$23K1,457 at $15.54filing
10 Aug 2026filed 11 Aug 2026LYEL Lyell ImmunopharmaBiotechnologySEC FORM 4 Sold$1,879131 at $14.34filing
10 Aug 2026filed 11 Aug 2026LYEL Lyell ImmunopharmaBiotechnologySEC FORM 4 Sold$1,879131 at $14.34filing
11 May 2026filed 15 Jun 2026LYEL Lyell ImmunopharmaBiotechnologySEC FORM 4 Sold$2,460130 at $18.92filing
11 May 2026filed 15 Jun 2026LYEL Lyell ImmunopharmaBiotechnologySEC FORM 4 Sold$2,460130 at $18.92filing
11 Feb 2026filed 12 Feb 2026LYEL Lyell ImmunopharmaBiotechnologySEC FORM 4 Sold$39K1,671 at $23.39filing
11 Feb 2026filed 12 Feb 2026LYEL Lyell ImmunopharmaBiotechnologySEC FORM 4 Sold$39K1,671 at $23.39filing
10 Feb 2026filed 11 Feb 2026LYEL Lyell ImmunopharmaBiotechnologySEC FORM 4 Sold$3,399147 at $23.12filing
10 Feb 2026filed 11 Feb 2026LYEL Lyell Immunopharmaoption or derivative · BiotechnologySEC FORM 4 Code A—50,000 at $0.00filing
10 Feb 2026filed 11 Feb 2026LYEL Lyell Immunopharmaoption or derivative · BiotechnologySEC FORM 4 Code A—50,000 at $0.00filing
10 Feb 2026filed 11 Feb 2026LYEL Lyell ImmunopharmaBiotechnologySEC FORM 4 Sold$3,399147 at $23.12filing
9 Feb 2026filed 11 Feb 2026LYEL Lyell ImmunopharmaBiotechnologySEC FORM 4 Code A—4,000 at $0.00filing
9 Feb 2026filed 11 Feb 2026LYEL Lyell ImmunopharmaBiotechnologySEC FORM 4 Code A—4,000 at $0.00filing
10 Nov 2025filed 12 Nov 2025LYEL Lyell ImmunopharmaBiotechnologySEC FORM 4 Sold$2,230138 at $16.16filing
27 Oct 2025filed 29 Oct 2025LYEL Lyell Immunopharmaoption or derivative · BiotechnologySEC FORM 4 Code A—68,000 at $0.00filing
21 Aug 2025filed 22 Aug 2025LYEL Lyell ImmunopharmaBiotechnologySEC FORM 4 Sold$15K1,453 at $10.54filing
20 Aug 2025filed 22 Aug 2025LYEL Lyell ImmunopharmaBiotechnologySEC FORM 4 Code A—8,000 at $0.00filing
12 Aug 2025filed 13 Aug 2025LYEL Lyell ImmunopharmaBiotechnologySEC FORM 4 Sold$1,406136 at $10.34filing
11 Aug 2025filed 13 Aug 2025LYEL Lyell ImmunopharmaBiotechnologySEC FORM 4 Sold$1,379131 at $10.53filing

Sectors

Health Care9

Buys in green, sells in red, by the company’s sector.

Related people

Jarrad Mattieu AguirreChief Medical Officer · Chief Medical Officer at Lyell Immunopharma, filing Form 4 there in the last year
David ShookChief Medical Officer · Chief Medical Officer at Lyell Immunopharma, filing Form 4 there in the last year
Lynn SeelyPresident and CEO · President and CEO at Lyell Immunopharma, filing Form 4 there in the last year
Stephen J. HillChief Operating Officer · Chief Operating Officer at Lyell Immunopharma, filing Form 4 there in the last year
Veronica Sanchez BulisVP, Corporate Controller · VP, Corporate Controller at Lyell Immunopharma, filing Form 4 there in the last year