Stocks
LYEL Lyell Immunopharma, Inc.

LYEL

Lyell Immunopharma, Inc.

Company with tickers: LYEL

CIK

1806952

CUSIP

55083R203

Shares Outstanding

23,334,087

Price History Institutional Holders Short Volume Short Interest Fails to Deliver SEC Filings Earnings Calls Insider Trades Congressional Trades

Date	Insider	Role	Type	Shares	Price	Value	After
2026-03-09	Shah Smital	Director	Award	140,000	—	—	140,000
2026-03-09	Shah Smital	Director	Other	0	—	—	0
2026-03-06	ARCH Venture Partners IX, LLC	10% Owner	Buy	488,090	$25.61	$12,499,985	1,426,528
2026-03-06	ARCH Venture Partners IX, LLC	10% Owner	Other	910,317	—	—	910,317
2026-03-06	ARCH Venture Partners IX, LLC	10% Owner	Other	910,317	—	—	910,317
2026-03-06	ARCH Venture Fund XIII, L.P.	10% Owner	Other	910,317	—	—	910,317
2026-03-06	ARCH Venture Fund XIII, L.P.	10% Owner	Other	910,317	—	—	910,317
2026-03-06	ARCH Venture Fund XIII, L.P.	10% Owner	Buy	488,090	$25.61	$12,499,985	1,426,528
2026-02-11	Seely Lynn	Director, President and CEO	Sell	7,455	$23.39	$174,372	74,266
2026-02-11	Hill Stephen J.	Chief Operating Officer	Sell	1,236	$23.39	$28,910	17,795
2026-02-11	Lee Gary K.	Chief Scientific Officer	Sell	1,671	$23.39	$39,085	16,938
2026-02-10	Lee Gary K.	Chief Scientific Officer	Award	50,000	—	—	50,000
2026-02-10	Lee Gary K.	Chief Scientific Officer	Sell	147	$23.12	$3,399	18,609
2026-02-10	Seely Lynn	Director, President and CEO	Award	155,000	—	—	155,000
2026-02-10	Seely Lynn	Director, President and CEO	Sell	438	$23.12	$10,127	81,721
2026-02-10	Meltz Mark A	General Counsel	Award	50,000	—	—	50,000
2026-02-10	Shook David	Chief Medical Officer	Other	21,900	—	—	21,900
2026-02-10	Hill Stephen J.	Chief Operating Officer	Award	65,000	—	—	65,000
2026-02-10	Hill Stephen J.	Chief Operating Officer	Sell	109	$23.12	$2,520	19,031
2026-02-10	Bulis Veronica Sanchez	VP, Corporate Controller	Award	8,750	—	—	15,891
2026-02-10	Bulis Veronica Sanchez	VP, Corporate Controller	Sell	254	$23.12	$5,872	15,637
2026-02-10	Shook David	Chief Medical Officer	Award	50,000	—	—	50,000
2026-02-09	Lee Gary K.	Chief Scientific Officer	Award	4,000	—	—	18,756
2026-02-09	Seely Lynn	Director, President and CEO	Award	20,000	—	—	82,159
2026-02-09	Hill Stephen J.	Chief Operating Officer	Award	4,000	—	—	19,140
2025-12-30	Bulis Veronica Sanchez	VP, Corporate Controller	Sell	936	$32.32	$30,252	7,141
2025-12-24	Bulis Veronica Sanchez	VP, Corporate Controller	Sell	1,136	$38.67	$43,929	8,077
2025-11-10	Hill Stephen J.	Chief Operating Officer	Sell	95	$16.12	$1,531	15,750
2025-11-10	Bulis Veronica Sanchez	VP, Corporate Controller	Sell	239	$16.10	$3,848	9,213
2025-11-10	Seely Lynn	Director, President and CEO	Sell	412	$16.11	$6,637	67,159
2025-11-10	Lee Gary K.	Chief Scientific Officer	Sell	138	$16.16	$2,230	15,366
2025-10-31	Bulis Veronica Sanchez	VP, Corporate Controller	Other	0	—	—	0
2025-10-31	Bulis Veronica Sanchez	VP, Corporate Controller	Other	9,452	—	—	9,452
2025-10-31	Bulis Veronica Sanchez	VP, Corporate Controller	Other	0	—	—	0
2025-10-31	Bulis Veronica Sanchez	VP, Corporate Controller	Other	0	—	—	0
2025-10-27	Hill Stephen J.	Chief Operating Officer	Other	15,845	—	—	15,845
2025-10-27	Hill Stephen J.	Chief Operating Officer	Award	75,000	—	—	75,000
2025-10-27	Lee Gary K.	Chief Scientific Officer	Other	15,504	—	—	15,504
2025-10-27	Lee Gary K.	Chief Scientific Officer	Award	68,000	—	—	68,000
2025-10-27	Seely Lynn	Director, President and CEO	Award	175,000	—	—	175,000
2025-10-27	Seely Lynn	Director, President and CEO	Other	67,571	—	—	67,571
2025-08-21	Lee Gary K.	Chief Scientific Officer	Sell	1,453	$10.54	$15,320	15,504
2025-08-21	Seely Lynn	Director, President and CEO	Sell	7,257	$10.54	$76,518	67,571
2025-08-21	Hill Stephen J.	Chief Operating Officer	Sell	1,004	$10.54	$10,586	15,845
2025-08-21	Newton Charles W.	Director	Sell	1,453	$10.54	$15,320	15,306
2025-08-20	Lee Gary K.	Chief Scientific Officer	Award	8,000	—	—	16,957
2025-08-20	Seely Lynn	Director, President and CEO	Award	40,000	—	—	74,828
2025-08-20	Hill Stephen J.	Chief Operating Officer	Award	8,000	—	—	16,849
2025-08-20	Newton Charles W.	Director	Award	8,000	—	—	16,759
2025-08-20	Newton Charles W.	Director	Other	10,000	—	—	10,000
2025-08-12	Seely Lynn	Director, President and CEO	Sell	406	$10.34	$4,197	34,828
2025-08-12	Hill Stephen J.	Chief Operating Officer	Sell	94	$10.34	$972	8,849
2025-08-12	Lee Gary K.	Chief Scientific Officer	Sell	136	$10.34	$1,406	8,957
2025-08-12	Newton Charles W.	Director	Sell	136	$10.34	$1,406	8,759
2025-08-11	Seely Lynn	Director, President and CEO	Sell	391	$10.53	$4,116	35,234
2025-08-11	Hill Stephen J.	Chief Operating Officer	Sell	91	$10.53	$958	8,943
2025-08-11	Lee Gary K.	Chief Scientific Officer	Sell	131	$10.53	$1,379	9,093
2025-08-11	Newton Charles W.	Director	Other	10,000	—	—	10,000
2025-08-11	Newton Charles W.	Director	Sell	131	$10.53	$1,379	8,895
2025-07-25	ARCH Venture Partners IX, LLC	10% Owner	Other	910,317	—	—	910,317
2025-07-25	ARCH Venture Partners IX, LLC	10% Owner	Other	910,317	—	—	910,317
2025-07-25	ARCH Venture Fund XIII, L.P.	10% Owner	Other	938,438	—	—	938,438
2025-06-09	Bachleda Mark	Chief Commercial Officer	Award	13,000	—	—	13,000
2025-06-09	Meltz Mark A	General Counsel	Award	100,000	—	—	100,000
2025-06-09	Shook David	Chief Medical Officer	Award	43,750	—	—	43,750
2025-06-09	Shook David	Chief Medical Officer	Award	21,900	—	—	21,900
2025-06-09	Bachleda Mark	Chief Commercial Officer	Other	0	—	—	0
2025-06-09	Shook David	Chief Medical Officer	Other	0	—	—	0
2025-06-09	Meltz Mark A	General Counsel	Other	0	—	—	0
2025-05-15	Ramachandra Sumant	Director	Award	130,000	—	—	130,000
2025-05-15	Klausner Richard	Director	Other	2,967,834	—	—	2,967,834
2025-05-15	Klausner Richard	Director	Award	130,000	—	—	130,000
2025-05-15	Klausner Richard	Director	Other	843,365	—	—	843,365
2025-05-15	RIEFLIN WILLIAM JL	Director	Award	130,000	—	—	130,000
2025-05-15	BRAWLEY OTIS W	Director	Award	130,000	—	—	130,000
2025-05-15	BRAWLEY OTIS W	Director	Other	35,640	—	—	35,640
2025-05-15	NABEL ELIZABETH G	Director	Award	130,000	—	—	130,000
2025-05-15	FRIEDMAN CATHY	Director	Other	100,000	—	—	100,000
2025-05-15	FRIEDMAN CATHY	Director	Other	236,370	—	—	236,370
2025-05-15	FRIEDMAN CATHY	Director	Award	130,000	—	—	130,000
2025-05-15	Ramachandra Sumant	Director	Other	200,000	—	—	200,000
2025-03-31	BRAWLEY OTIS W	Director	Buy	35,640	$0.56	$19,958	35,640
2025-03-21	Ramachandra Sumant	Director	Buy	200,000	$0.58	$115,220	200,000
2025-03-17	Newton Charles W.	Director	Buy	200,000	$0.56	$111,620	200,000
2025-03-17	Newton Charles W.	Director	Other	172,725	—	—	172,725
2025-03-14	Klausner Richard	Director	Other	2,967,834	—	—	2,967,834
2025-03-14	Klausner Richard	Director	Buy	158,000	$0.60	$94,942	843,365
2025-03-14	Seely Lynn	Director, President and CEO	Buy	175,000	$0.61	$106,190	712,500
2025-02-10	Hill Stephen J.	Chief Operating Officer	Award	112,500	—	—	172,899
2025-02-10	Hill Stephen J.	Chief Operating Officer	Award	450,000	—	—	450,000
2025-02-10	Hill Stephen J.	Chief Operating Officer	Award	56,250	—	—	56,250
2025-02-10	Newton Charles W.	Director	Award	112,500	—	—	172,725
2025-02-10	Newton Charles W.	Director	Award	450,000	—	—	450,000
2025-02-10	Newton Charles W.	Director	Award	56,250	—	—	56,250
2025-02-10	Lee Gary K.	Chief Scientific Officer	Award	56,250	—	—	56,250
2025-02-10	Lee Gary K.	Chief Scientific Officer	Award	450,000	—	—	450,000
2025-02-10	Lee Gary K.	Chief Scientific Officer	Award	112,500	—	—	176,696
2025-02-10	Seely Lynn	Director, President and CEO	Award	1,350,000	—	—	1,350,000
2025-02-10	Seely Lynn	Director, President and CEO	Award	337,500	—	—	537,500
2025-02-10	Seely Lynn	Director, President and CEO	Award	168,750	—	—	168,750