Arch Venture Partners Ix, Llc
10% owner
Buy
Calculated transaction value
$25M
2,321,262 shares @ $10.77
Traded
Nov 4, 2026
Filed
Nov 5, 2026
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Lyell Immunopharma
LYEL
ManufacturingChemicals
Transactions reported in official disclosures
Price with disclosed trades
Daily closes, past year · marks sit on transaction dates, sized by value
30 trades
| Reporting person | Filed | Transaction | Transaction value | Source | Actions |
|---|---|---|---|---|---|
| Arch Venture Partners Ix, Llc 10% owner | Nov 5, 2026 1-day lag | Buy Nov 4, 2026 | $25M Filed shares x price | SEC Form 4 View filing | |
| Arch Venture Fund Xiii, L.p. 10% owner | Nov 5, 2026 1-day lag | Buy Nov 4, 2026 | $25M Filed shares x price | SEC Form 4 View filing | |
| Aguirre Jarrad Mattieu Chief Medical Officer | Oct 13, 2026 1-day lag | Sale Oct 12, 2026 | $3.64K Filed shares x price | SEC Form 4 View filing | |
| Shook David Chief Medical Officer | Sep 10, 2026 Same-day filing | Sale Sep 10, 2026 | $6.35K Filed shares x price | SEC Form 4 View filing | |
| Aguirre Jarrad Mattieu Chief Medical Officer | Sep 10, 2026 Same-day filing | Award Sep 10, 2026 | $0 Filed shares x price | SEC Form 4 View filing | |
| Seely Lynn President And CEO | Aug 25, 2026 4-day lag | Sale Aug 21, 2026 | $149.01K Filed shares x price | SEC Form 4 View filing | |
| Hill Stephen J. Chief Operating Officer | Aug 25, 2026 4-day lag | Sale Aug 21, 2026 | $15.37K Filed shares x price | SEC Form 4 View filing | |
| Lee Gary K. Chief Scientific Officer | Aug 25, 2026 4-day lag | Sale Aug 21, 2026 | $22.64K Filed shares x price | SEC Form 4 View filing | |
| Bulis Veronica Sanchez VP, Corporate Controller | Aug 11, 2026 1-day lag | Sale Aug 10, 2026 | $8.91K Filed shares x price | SEC Form 4 View filing | |
| Lee Gary K. Chief Scientific Officer | Aug 11, 2026 1-day lag | Sale Aug 10, 2026 | $1.88K Filed shares x price | SEC Form 4 View filing | |
| Hill Stephen J. Chief Operating Officer | Aug 11, 2026 1-day lag | Sale Aug 10, 2026 | $1.28K Filed shares x price | SEC Form 4 View filing | |
| Seely Lynn President And CEO | Aug 11, 2026 1-day lag | Sale Aug 10, 2026 | $5.59K Filed shares x price | SEC Form 4 View filing | |
| Innovative Cellular Therape... 10% owner | Jul 27, 2026 Same-day filing | Other Jul 27, 2026 | $0 Filed shares x price | SEC Form 4 View filing | |
| Innovative Cellular Therape... 10% owner | Jul 27, 2026 Same-day filing | Other Jul 27, 2026 | $0 Filed shares x price | SEC Form 4 View filing | |
| Innovative Cellular Therape... 10% owner | Jul 20, 2026 3-day lag | Sale Jul 17, 2026 | $137 Filed shares x price | SEC Form 4 View filing | |
| Innovative Cellular Therape... 10% owner | Jul 17, 2026 1-day lag | Sale Jul 16, 2026 | $137.3 Filed shares x price | SEC Form 4 View filing | |
| Innovative Cellular Therape... 10% owner | Jul 1, 2026 2-day lag | Other Jun 29, 2026 | $0 Filed shares x price | SEC Form 4 View filing | |
| Innovative Cellular Therape... 10% owner | Jun 18, 2026 3-day lag | Other Jun 15, 2026 | $0 Filed shares x price | SEC Form 4 View filing | |
| Lee Gary K. Chief Scientific Officer | Jun 15, 2026 35-day lag | Sale May 11, 2026 | $2.46K Filed shares x price | SEC Form 4 View filing | |
| Seely Lynn President And CEO | Jun 15, 2026 35-day lag | Sale May 11, 2026 | $7.34K Filed shares x price | SEC Form 4 View filing | |
| Bulis Veronica Sanchez VP, Corporate Controller | Jun 15, 2026 35-day lag | Sale May 11, 2026 | $4.1K Filed shares x price | SEC Form 4 View filing | |
| Hill Stephen J. Chief Operating Officer | Jun 15, 2026 35-day lag | Sale May 11, 2026 | $1.68K Filed shares x price | SEC Form 4 View filing | |
| Friedman Cathy Director | Jun 12, 2026 2-day lag | Award Jun 10, 2026 | $0 Filed shares x price | SEC Form 4 View filing | |
| Nabel Elizabeth G Director | Jun 12, 2026 2-day lag | Award Jun 10, 2026 | $0 Filed shares x price | SEC Form 4 View filing | |
| Brawley Otis W Director | Jun 12, 2026 2-day lag | Award Jun 10, 2026 | $0 Filed shares x price | SEC Form 4 View filing | |
| Klausner Richard Director | Jun 12, 2026 2-day lag | Award Jun 10, 2026 | $0 Filed shares x price | SEC Form 4 View filing | |
| Ramachandra Sumant Director | Jun 12, 2026 2-day lag | Award Jun 10, 2026 | $0 Filed shares x price | SEC Form 4 View filing | |
| Rieflin William Jl Director | Jun 12, 2026 2-day lag | Award Jun 10, 2026 | $0 Filed shares x price | SEC Form 4 View filing | |
| Bachleda Mark Director | Jun 12, 2026 2-day lag | Award Jun 10, 2026 | $0 Filed shares x price | SEC Form 4 View filing | |
| Shook David Chief Medical Officer | Jun 11, 2026 1-day lag | Sale Jun 10, 2026 | $24.99K Filed shares x price | SEC Form 4 View filing |
Arch Venture Fund Xiii, L.p.
10% owner
Buy
Calculated transaction value
$25M
2,321,262 shares @ $10.77
Traded
Nov 4, 2026
Filed
Nov 5, 2026
Aguirre Jarrad Mattieu
Chief Medical Officer
Sale
Calculated transaction value
$3.64K
422 shares @ $8.63
Traded
Oct 12, 2026
Filed
Oct 13, 2026
Shook David
Chief Medical Officer
Sale
Calculated transaction value
$6.35K
500 shares @ $12.7
Traded
Sep 10, 2026
Filed
Sep 10, 2026
Aguirre Jarrad Mattieu
Chief Medical Officer
Award
Calculated transaction value
$0
47,500 shares @ $0
Traded
Sep 10, 2026
Filed
Sep 10, 2026
Seely Lynn
President And CEO
Sale
Calculated transaction value
$149.01K
9,589 shares @ $15.54
Traded
Aug 21, 2026
Filed
Aug 25, 2026
Hill Stephen J.
Chief Operating Officer
Sale
Calculated transaction value
$15.37K
989 shares @ $15.54
Traded
Aug 21, 2026
Filed
Aug 25, 2026
Lee Gary K.
Chief Scientific Officer
Sale
Calculated transaction value
$22.64K
1,457 shares @ $15.54
Traded
Aug 21, 2026
Filed
Aug 25, 2026
Bulis Veronica Sanchez
VP, Corporate Controller
Sale
Calculated transaction value
$8.91K
621 shares @ $14.34
Traded
Aug 10, 2026
Filed
Aug 11, 2026
Lee Gary K.
Chief Scientific Officer
Sale
Calculated transaction value
$1.88K
131 shares @ $14.34
Traded
Aug 10, 2026
Filed
Aug 11, 2026
Hill Stephen J.
Chief Operating Officer
Sale
Calculated transaction value
$1.28K
89 shares @ $14.34
Traded
Aug 10, 2026
Filed
Aug 11, 2026
Seely Lynn
President And CEO
Sale
Calculated transaction value
$5.59K
390 shares @ $14.34
Traded
Aug 10, 2026
Filed
Aug 11, 2026
Innovative Cellular Therapeutics Holdings Ltd
10% owner
Other
Calculated transaction value
$0
44,000 shares @ $0
Traded
Jul 27, 2026
Filed
Jul 27, 2026
Innovative Cellular Therapeutics Holdings Ltd
10% owner
Other
Calculated transaction value
$0
38,500 shares @ $0
Traded
Jul 27, 2026
Filed
Jul 27, 2026
Innovative Cellular Therapeutics Holdings Ltd
10% owner
Sale
Calculated transaction value
$137
10 shares @ $13.7
Traded
Jul 17, 2026
Filed
Jul 20, 2026
Innovative Cellular Therapeutics Holdings Ltd
10% owner
Sale
Calculated transaction value
$137.3
10 shares @ $13.73
Traded
Jul 16, 2026
Filed
Jul 17, 2026
Innovative Cellular Therapeutics Holdings Ltd
10% owner
Other
Calculated transaction value
$0
76,000 shares @ $0
Traded
Jun 29, 2026
Filed
Jul 1, 2026
Innovative Cellular Therapeutics Holdings Ltd
10% owner
Other
Calculated transaction value
$0
66,500 shares @ $0
Traded
Jun 15, 2026
Filed
Jun 18, 2026
Lee Gary K.
Chief Scientific Officer
Sale
Calculated transaction value
$2.46K
130 shares @ $18.92
Traded
May 11, 2026
Filed
Jun 15, 2026
Seely Lynn
President And CEO
Sale
Calculated transaction value
$7.34K
388 shares @ $18.91
Traded
May 11, 2026
Filed
Jun 15, 2026
Bulis Veronica Sanchez
VP, Corporate Controller
Sale
Calculated transaction value
$4.1K
217 shares @ $18.91
Traded
May 11, 2026
Filed
Jun 15, 2026
Hill Stephen J.
Chief Operating Officer
Sale
Calculated transaction value
$1.68K
89 shares @ $18.92
Traded
May 11, 2026
Filed
Jun 15, 2026
Friedman Cathy
Director
Award
Calculated transaction value
$0
9,250 shares @ $0
Traded
Jun 10, 2026
Filed
Jun 12, 2026
Nabel Elizabeth G
Director
Award
Calculated transaction value
$0
9,250 shares @ $0
Traded
Jun 10, 2026
Filed
Jun 12, 2026
Brawley Otis W
Director
Award
Calculated transaction value
$0
9,250 shares @ $0
Traded
Jun 10, 2026
Filed
Jun 12, 2026
Klausner Richard
Director
Award
Calculated transaction value
$0
9,250 shares @ $0
Traded
Jun 10, 2026
Filed
Jun 12, 2026
Ramachandra Sumant
Director
Award
Calculated transaction value
$0
9,250 shares @ $0
Traded
Jun 10, 2026
Filed
Jun 12, 2026
Rieflin William Jl
Director
Award
Calculated transaction value
$0
9,250 shares @ $0
Traded
Jun 10, 2026
Filed
Jun 12, 2026
Bachleda Mark
Director
Award
Calculated transaction value
$0
9,250 shares @ $0
Traded
Jun 10, 2026
Filed
Jun 12, 2026
Shook David
Chief Medical Officer
Sale
Calculated transaction value
$24.99K
1,977 shares @ $12.64
Traded
Jun 10, 2026
Filed
Jun 11, 2026