LYEL
LYELL IMMUNPHRM (LYEL)
NASDAQ
$16.86+$0.11 (+0.66%)
Price as of Nov 11, 2026 4:10 PM EST
  • $411.8M
    Market Cap
  • -2.90%
    1-Year Change
  • Biotechnology
    Industry

Top Holders

Institutional
Mutual Funds
Holder
Ownership %
Shares Held
Change (Shares, %)
Report Date
APOLETTO LTD
61.60%
15.1M
0 (0.00%)
Sep 30, 2022
BLACKROCK INC.
55.07%
13.5M
-397,495 (-2.95%)
Jun 30, 2024
BLACKROCK FUNDING, INC. /DE
54.14%
13.3M
-481,215 (-3.63%)
Dec 31, 2024
WUXI APPTEC CO., LTD.
30.16%
7.4M
-291,446 (-3.94%)
Sep 30, 2024
ARCH VENTURE MANAGEMENT, LLC
13.25%
3.2M
0 (0.00%)
Jun 30, 2026
GSK PLC
6.17%
1.5M
0 (0.00%)
Sep 30, 2026
MIC CAPITAL PARTNERS (PUBLIC) (US) IM, LLC
5.39%
1.3M
0 (0.00%)
Sep 30, 2021

Current Ownership Distribution

  • Institutions1.8B (80.18%)
  • Mutual Funds407.8M (17.88%)
  • Insiders44.4M (1.95%)
  • Other0 (0.00%)

Insider Transactions

  • 1.95% (44.4M)
    Current InsiderOwnership (%, shares)
  • 2
    Number of InsiderBuying (last 12 months)
  • $63.4M
    Amount of InsiderBuying (last 12 months)
  • 7
    Number of InsiderSelling (last 12 months)
  • $86.6M
    Amount of InsiderSelling (last 12 months)
Insider Name & Title
Type
Date
Transaction Value
Shares
Share Price
Shares After Transactions
ARCH Venture Fund XIII, L.P.
Buy
Nov 04, 2026
$25.0M
2.3M
$10.77
3.7M
Aguirre Jarrad Mattieu
Chief Medical Officer
Sell
Oct 12, 2026
$3,641.86
422
$8.63
19,857
Shook David
Chief Medical Officer
Sell
Sep 10, 2026
$6,350.00
500
$12.70
20,423
Seely Lynn
President and CEO
Sell
Aug 21, 2026
$149,013.06
9,589
$15.54
63,899
Hill Stephen J.
Chief Operating Officer
Sell
Aug 21, 2026
$15,369.06
989
$15.54
16,816
Lee Gary K.
Chief Scientific Officer
Sell
Aug 21, 2026
$22,641.78
1,457
$15.54
16,220
Seely Lynn
President and CEO
Sell
Aug 10, 2026
$5,592.60
390
$14.34
73,488
Lee Gary K.
Chief Scientific Officer
Sell
Aug 10, 2026
$1,878.54
131
$14.34
17,677
Hill Stephen J.
Chief Operating Officer
Sell
Aug 10, 2026
$1,276.26
89
$14.34
17,805
Bulis Veronica Sanchez
VP, Corporate Controller
Sell
Aug 10, 2026
$8,905.14
621
$14.34
14,799
Innovative Cellular Therapeutics Holdings Ltd
Other
Jul 27, 2026
$0.00
44,000
$0.00
2.8M
Innovative Cellular Therapeutics Holdings Ltd
Sell
Jul 17, 2026
$137.00
10
$13.70
2.9M
Innovative Cellular Therapeutics Holdings Ltd
Sell
Jul 16, 2026
$137.30
10
$13.73
2.9M
Innovative Cellular Therapeutics Holdings Ltd
Other
Jun 29, 2026
$0.00
76,000
$0.00
2.9M
Innovative Cellular Therapeutics Holdings Ltd
Other
Jun 15, 2026
$0.00
66,500
$0.00
2.9M
Shook David
Chief Medical Officer
Sell
Jun 10, 2026
$24,989.28
1,977
$12.64
20,923
Klausner Richard
Award
Jun 10, 2026
$0.00
9,250
$0.00
9,250
RIEFLIN WILLIAM JL
Award
Jun 10, 2026
$0.00
9,250
$0.00
9,250
FRIEDMAN CATHY
Award
Jun 10, 2026
$0.00
9,250
$0.00
9,250
Bulis Veronica Sanchez
VP, Corporate Controller
Sell
May 11, 2026
$4,103.47
217
$18.91
15,420
Lee Gary K.
Chief Scientific Officer
Sell
May 11, 2026
$2,459.60
130
$18.92
17,808
Hill Stephen J.
Chief Operating Officer
Sell
May 11, 2026
$1,683.88
89
$18.92
17,894
ARCH Venture Partners IX, LLC
Buy
Mar 06, 2026
$12.5M
488,090
$25.61
1.4M
ARCH Venture Fund XIII, L.P.
Buy
Mar 06, 2026
$12.5M
488,090
$25.61
1.4M
Lee Gary K.
Chief Scientific Officer
Sell
Feb 10, 2026
$3,398.64
147
$23.12
18,609
Shook David
Chief Medical Officer
Award
Feb 10, 2026
$0.00
50,000
$0.00
50,000
Seely Lynn
President and CEO
Sell
Feb 10, 2026
$10,126.56
438
$23.12
81,721
Meltz Mark A
General Counsel
Award
Feb 10, 2026
$0.00
50,000
$0.00
50,000
Lee Gary K.
Chief Scientific Officer
Award
Feb 10, 2026
$0.00
50,000
$0.00
50,000
Hill Stephen J.
Chief Operating Officer
Sell
Feb 10, 2026
$2,520.08
109
$23.12
19,031