Lyell Immunopharma, Inc. ($LYEL) Insider Transactions

Last updated: 2026-03-17 13:00 UTC | Total transactions: 136

In the last 12 months, insiders at Lyell Immunopharma, Inc. ($LYEL) filed 136 transactions with the SEC: 7 open-market purchases totaling $25,447,900 and 26 sales totaling $618,555. Net insider sentiment: net buying.

Lyell Immunopharma, Inc. operates in the Pharmaceutical preparations industry (Life sciences sector).

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Recent Insider Transactions

Transaction Date Insider Name Title Transaction Type Security Shares Price Shares Owned Following Total Shares Outstanding % of Owned % of Outstanding
March 9, 2026 Shah Smital Chief Fin. and Bus. Officer A Option (right to buy) 140000 $0.00 140,000.0000 21,218,217 9999.99% 0.66%
March 6, 2026 ARCH Venture Partners IX, LLC TenPercentOwner P Common Stock 488090 $25.61 3,247,162.0000 21,218,217 17.69% 2.30%
March 6, 2026 ARCH Venture Fund XIII, L.P. TenPercentOwner P Common Stock 488090 $25.61 3,247,162.0000 21,218,217 17.69% 2.30%
Feb. 11, 2026 Lee Gary K. Chief Scientific Officer S Common Stock 1671 $23.39 16,938.0000 21,218,217 8.98% 0.01%
Feb. 11, 2026 Seely Lynn President and CEO S Common Stock 7455 $23.39 74,266.0000 21,218,217 9.12% 0.04%
Feb. 11, 2026 Hill Stephen J. Chief Operating Officer S Common Stock 1236 $23.39 17,795.0000 21,218,217 6.49% 0.01%
Feb. 10, 2026 Lee Gary K. Chief Scientific Officer A Option (right to buy) 50000 $0.00 50,000.0000 21,218,217 9999.99% 0.24%
Feb. 10, 2026 Hill Stephen J. Chief Operating Officer S Common Stock 109 $23.12 19,031.0000 21,218,217 0.57% 0.00%
Feb. 10, 2026 Hill Stephen J. Chief Operating Officer A Option (right to buy) 65000 $0.00 65,000.0000 21,218,217 9999.99% 0.31%
Feb. 9, 2026 Seely Lynn President and CEO A Common Stock 20000 $0.00 82,159.0000 21,218,217 32.18% 0.09%
Feb. 10, 2026 Seely Lynn President and CEO S Common Stock 438 $23.12 81,721.0000 21,218,217 0.53% 0.00%
Feb. 10, 2026 Seely Lynn President and CEO A Option (right to buy) 155000 $0.00 155,000.0000 21,218,217 9999.99% 0.73%
Feb. 10, 2026 Meltz Mark A General Counsel A Option (right to buy) 50000 $0.00 50,000.0000 21,218,217 9999.99% 0.24%
Feb. 10, 2026 Bulis Veronica Sanchez VP, Corporate Controller A Common Stock 8750 $0.00 15,891.0000 21,218,217 122.53% 0.04%
Feb. 10, 2026 Bulis Veronica Sanchez VP, Corporate Controller S Common Stock 254 $23.12 15,637.0000 21,218,217 1.60% 0.00%
Feb. 10, 2026 Shook David Chief Medical Officer A Option (right to buy) 50000 $0.00 50,000.0000 21,218,217 9999.99% 0.24%
Feb. 10, 2026 Lee Gary K. Chief Scientific Officer S Common Stock 147 $23.12 18,609.0000 21,218,217 0.78% 0.00%
Feb. 9, 2026 Hill Stephen J. Chief Operating Officer A Common Stock 4000 $0.00 19,140.0000 21,218,217 26.42% 0.02%
Feb. 9, 2026 Lee Gary K. Chief Scientific Officer A Common Stock 4000 $0.00 18,756.0000 21,218,217 27.11% 0.02%
Dec. 30, 2025 Bulis Veronica Sanchez VP, Corporate Controller S Common Stock 936 $32.32 7,141.0000 21,218,217 11.59% 0.00%
Dec. 24, 2025 Bulis Veronica Sanchez VP, Corporate Controller S Common Stock 1136 $38.67 8,077.0000 21,218,217 12.33% 0.01%
Nov. 10, 2025 Lee Gary K. Chief Scientific Officer S Common Stock 138 $16.16 15,366.0000 295,228,868 0.89% 0.00%
Nov. 10, 2025 Seely Lynn President and CEO S Common Stock 412 $16.11 67,159.0000 295,228,868 0.61% 0.00%
Nov. 10, 2025 Hill Stephen J. Chief Operating Officer S Common Stock 95 $16.12 15,750.0000 295,228,868 0.60% 0.00%
Nov. 10, 2025 Bulis Veronica Sanchez VP, Corporate Controller S Common Stock 239 $16.10 9,213.0000 295,228,868 2.53% 0.00%
Oct. 27, 2025 Hill Stephen J. Chief Operating Officer A Option (right to buy) 75000 $0.00 75,000.0000 295,228,868 9999.99% 0.03%
Oct. 27, 2025 Lee Gary K. Chief Scientific Officer A Option (right to buy) 68000 $0.00 68,000.0000 295,228,868 9999.99% 0.02%
Oct. 27, 2025 Seely Lynn President and CEO A Option (right to buy) 175000 $0.00 175,000.0000 295,228,868 9999.99% 0.06%
Aug. 21, 2025 Lee Gary K. Chief Scientific Officer S Common Stock 1453 $10.54 15,504.0000 295,228,868 8.57% 0.00%
Aug. 21, 2025 Newton Charles W. Chief Financial Officer S Common Stock 1453 $10.54 25,306.0000 295,228,868 5.43% 0.00%
Aug. 20, 2025 Lee Gary K. Chief Scientific Officer A Common Stock 8000 $0.00 16,957.0000 295,228,868 89.32% 0.00%
Aug. 20, 2025 Seely Lynn President and CEO A Common Stock 40000 $0.00 74,828.0000 295,228,868 114.85% 0.01%
Aug. 20, 2025 Hill Stephen J. Chief Operating Officer A Common Stock 8000 $0.00 16,849.0000 295,228,868 90.41% 0.00%
Aug. 21, 2025 Seely Lynn President and CEO S Common Stock 7257 $10.54 67,571.0000 295,228,868 9.70% 0.00%
Aug. 21, 2025 Hill Stephen J. Chief Operating Officer S Common Stock 1004 $10.54 15,845.0000 295,228,868 5.96% 0.00%
Aug. 20, 2025 Newton Charles W. Chief Financial Officer A Common Stock 8000 $0.00 26,759.0000 295,228,868 42.65% 0.00%
Aug. 11, 2025 Hill Stephen J. Chief Operating Officer S Common Stock 91 $10.53 8,943.0000 295,228,868 1.01% 0.00%
Aug. 11, 2025 Seely Lynn President and CEO S Common Stock 391 $10.53 35,234.0000 295,228,868 1.10% 0.00%
Aug. 12, 2025 Newton Charles W. Chief Financial Officer S Common Stock 136 $10.34 18,759.0000 295,228,868 0.72% 0.00%
Aug. 11, 2025 Newton Charles W. Chief Financial Officer S Common Stock 131 $10.53 18,895.0000 295,228,868 0.69% 0.00%
Aug. 12, 2025 Lee Gary K. Chief Scientific Officer S Common Stock 136 $10.34 8,957.0000 295,228,868 1.50% 0.00%
Aug. 11, 2025 Lee Gary K. Chief Scientific Officer S Common Stock 131 $10.53 9,093.0000 295,228,868 1.42% 0.00%
Aug. 12, 2025 Hill Stephen J. Chief Operating Officer S Common Stock 94 $10.34 8,849.0000 295,228,868 1.05% 0.00%
Aug. 12, 2025 Seely Lynn President and CEO S Common Stock 406 $10.34 34,828.0000 295,228,868 1.15% 0.00%
June 9, 2025 Shook David Chief Medical Officer A Option (right to buy) 43750 $0.00 43,750.0000 295,228,868 9999.99% 0.01%
June 9, 2025 Bachleda Mark Not found A Option (right to buy) 13000 $0.00 13,000.0000 295,228,868 9999.99% 0.00%
June 9, 2025 Meltz Mark A General Counsel A Option (right to buy) 100000 $0.00 100,000.0000 295,228,868 9999.99% 0.03%
June 9, 2025 Shook David Chief Medical Officer A Common Stock 21900 $0.00 21,900.0000 295,228,868 9999.99% 0.01%
May 15, 2025 NABEL ELIZABETH G Not found A Option (right to buy) 130000 $0.00 130,000.0000 295,228,868 9999.99% 0.04%
May 15, 2025 Klausner Richard Not found A Option (right to buy) 130000 $0.00 130,000.0000 295,228,868 9999.99% 0.04%
May 15, 2025 RIEFLIN WILLIAM JL Not found A Option (right to buy) 130000 $0.00 130,000.0000 295,228,868 9999.99% 0.04%
May 15, 2025 FRIEDMAN CATHY Not found A Option (right to buy) 130000 $0.00 130,000.0000 295,228,868 9999.99% 0.04%
May 15, 2025 BRAWLEY OTIS W Not found A Option (right to buy) 130000 $0.00 130,000.0000 295,228,868 9999.99% 0.04%
May 15, 2025 Ramachandra Sumant Not found A Option (right to buy) 130000 $0.00 130,000.0000 295,228,868 9999.99% 0.04%
March 31, 2025 BRAWLEY OTIS W Not found P Common Stock 35640 $0.56 35,640.0000 295,228,868 9999.99% 0.01%
March 21, 2025 Ramachandra Sumant Not found P Common Stock 200000 $0.58 200,000.0000 295,228,868 9999.99% 0.07%
March 14, 2025 Seely Lynn President and CEO P Common Stock 175000 $0.61 712,500.0000 295,228,868 32.56% 0.06%
March 17, 2025 Newton Charles W. Chief Financial Officer P Common Stock 200000 $0.56 372,725.0000 295,228,868 115.79% 0.07%
March 14, 2025 Klausner Richard Not found P Common Stock 158000 $0.60 3,811,199.0000 295,228,868 4.32% 0.05%
Feb. 10, 2025 Newton Charles W. Chief Financial Officer A Option (right to buy) 56250 $0.00 56,250.0000 0 9999.99% 0.00%
Feb. 10, 2025 Lee Gary K. Chief Scientific Officer A Common Stock 112500 $0.00 176,696.0000 0 175.24% 0.00%
Feb. 10, 2025 Lee Gary K. Chief Scientific Officer A Option (right to buy) 450000 $0.00 450,000.0000 0 9999.99% 0.00%
Feb. 10, 2025 Lee Gary K. Chief Scientific Officer A Option (right to buy) 56250 $0.00 56,250.0000 0 9999.99% 0.00%
Feb. 10, 2025 Hill Stephen J. Chief Operating Officer A Common Stock 112500 $0.00 172,899.0000 0 186.26% 0.00%
Feb. 10, 2025 Hill Stephen J. Chief Operating Officer A Option (right to buy) 450000 $0.00 450,000.0000 0 9999.99% 0.00%
Feb. 10, 2025 Hill Stephen J. Chief Operating Officer A Option (right to buy) 56250 $0.00 56,250.0000 0 9999.99% 0.00%
Feb. 10, 2025 Newton Charles W. Chief Financial Officer A Common Stock 112500 $0.00 172,725.0000 0 186.80% 0.00%
Feb. 10, 2025 Newton Charles W. Chief Financial Officer A Option (right to buy) 450000 $0.00 450,000.0000 0 9999.99% 0.00%
Feb. 10, 2025 Lang Matthew Chief Business Officer A Common Stock 112500 $0.00 162,500.0000 0 225.00% 0.00%
Feb. 10, 2025 Lang Matthew Chief Business Officer A Option (right to buy) 450000 $0.00 450,000.0000 0 9999.99% 0.00%
Feb. 10, 2025 Lang Matthew Chief Business Officer A Option (right to buy) 56250 $0.00 56,250.0000 0 9999.99% 0.00%
Feb. 10, 2025 Seely Lynn President and CEO A Common Stock 337500 $0.00 537,500.0000 0 168.75% 0.00%
Feb. 10, 2025 Seely Lynn President and CEO A Option (right to buy) 1350000 $0.00 1,350,000.0000 0 9999.99% 0.00%
Feb. 10, 2025 Seely Lynn President and CEO A Option (right to buy) 168750 $0.00 168,750.0000 0 9999.99% 0.00%
Oct. 31, 2024 Ramachandra Sumant Not found A Option (right to buy) 260000 $0.00 260,000.0000 0 9999.99% 0.00%
June 14, 2024 FRIEDMAN CATHY Not found A Option (right to buy) 130000 $0.00 130,000.0000 0 9999.99% 0.00%
June 14, 2024 Bishop Hans Edgar Not found A Option (right to buy) 130000 $0.00 130,000.0000 0 9999.99% 0.00%
June 14, 2024 NELSEN ROBERT Not found A Option (right to buy) 130000 $0.00 130,000.0000 0 9999.99% 0.00%
June 14, 2024 Klausner Richard Not found A Option (right to buy) 130000 $0.00 130,000.0000 0 9999.99% 0.00%
June 14, 2024 RIEFLIN WILLIAM JL Not found A Option (right to buy) 130000 $0.00 130,000.0000 0 9999.99% 0.00%
June 14, 2024 BRAWLEY OTIS W Not found A Option (right to buy) 130000 $0.00 130,000.0000 0 9999.99% 0.00%
June 14, 2024 NABEL ELIZABETH G Not found A Option (right to buy) 130000 $0.00 130,000.0000 0 9999.99% 0.00%
Feb. 9, 2024 Newton Charles W. Chief Financial Officer A Stock Option (right to buy) 400000 $0.00 400,000.0000 0 9999.99% 0.00%
Feb. 9, 2024 Seely Lynn President and CEO A Common Stock 200000 $0.00 200,000.0000 0 9999.99% 0.00%
Feb. 9, 2024 Newton Charles W. Chief Financial Officer A Common Stock 40000 $0.00 48,729.0000 0 458.24% 0.00%
Feb. 9, 2024 Lee Gary K. Chief Scientific Officer A Stock Option (right to buy) 400000 $0.00 400,000.0000 0 9999.99% 0.00%
Feb. 9, 2024 Lee Gary K. Chief Scientific Officer A Common Stock 40000 $0.00 52,700.0000 0 314.96% 0.00%
Feb. 9, 2024 Hill Stephen J. Chief Operating Officer A Stock Option (right to buy) 400000 $0.00 400,000.0000 0 9999.99% 0.00%
Feb. 9, 2024 Hill Stephen J. Chief Operating Officer A Common Stock 40000 $0.00 48,928.0000 0 448.03% 0.00%
Feb. 9, 2024 Lang Matthew Chief Business Officer A Option (right to buy) 500000 $0.00 500,000.0000 0 9999.99% 0.00%
Feb. 9, 2024 Lang Matthew Chief Business Officer A Common Stock 50000 $0.00 50,000.0000 0 9999.99% 0.00%
Nov. 16, 2023 Hill Stephen J. Chief Technical Ops. Officer D Stock Option (right to buy) 500000 $0.00 0.0000 0 100.00% 0.00%
Nov. 16, 2023 Hill Stephen J. Chief Technical Ops. Officer D Stock Option (right to buy) 100000 $0.00 0.0000 0 100.00% 0.00%
Nov. 16, 2023 Hill Stephen J. Chief Technical Ops. Officer A Stock Option (right to buy) 100000 $0.00 100,000.0000 0 9999.99% 0.00%
Nov. 16, 2023 Hill Stephen J. Chief Technical Ops. Officer D Stock Option (right to buy) 450000 $0.00 0.0000 0 100.00% 0.00%
Nov. 16, 2023 Hill Stephen J. Chief Technical Ops. Officer A Stock Option (right to buy) 450000 $0.00 450,000.0000 0 9999.99% 0.00%
Nov. 16, 2023 Hill Stephen J. Chief Technical Ops. Officer D Stock Option (right to buy) 165000 $0.00 0.0000 0 100.00% 0.00%
Nov. 16, 2023 Hill Stephen J. Chief Technical Ops. Officer A Stock Option (right to buy) 165000 $0.00 165,000.0000 0 9999.99% 0.00%
Nov. 16, 2023 Hill Stephen J. Chief Technical Ops. Officer D Stock Option (right to buy) 85000 $0.00 0.0000 0 100.00% 0.00%
Nov. 16, 2023 Hill Stephen J. Chief Technical Ops. Officer A Stock Option (right to buy) 700000 $0.00 700,000.0000 0 9999.99% 0.00%
Nov. 16, 2023 Hill Stephen J. Chief Technical Ops. Officer D Stock Option (right to buy) 700000 $0.00 0.0000 0 100.00% 0.00%
Nov. 16, 2023 Hill Stephen J. Chief Technical Ops. Officer A Stock Option (right to buy) 85000 $0.00 85,000.0000 0 9999.99% 0.00%
Nov. 16, 2023 Newton Charles W. Chief Financial Officer A Stock Option (right to buy) 3612000 $0.00 3,612,000.0000 0 9999.99% 0.00%
Nov. 16, 2023 Newton Charles W. Chief Financial Officer D Stock Option (right to buy) 3612000 $0.00 0.0000 0 100.00% 0.00%
Nov. 16, 2023 Newton Charles W. Chief Financial Officer A Stock Option (right to buy) 190000 $0.00 190,000.0000 0 9999.99% 0.00%
Nov. 16, 2023 Newton Charles W. Chief Financial Officer D Stock Option (right to buy) 190000 $0.00 0.0000 0 100.00% 0.00%
Nov. 16, 2023 Newton Charles W. Chief Financial Officer A Stock Option (right to buy) 516000 $0.00 516,000.0000 0 9999.99% 0.00%
Nov. 16, 2023 Newton Charles W. Chief Financial Officer D Stock Option (right to buy) 516000 $0.00 0.0000 0 100.00% 0.00%
Nov. 16, 2023 Newton Charles W. Chief Financial Officer A Stock Option (right to buy) 500000 $0.00 500,000.0000 0 9999.99% 0.00%
Nov. 16, 2023 Newton Charles W. Chief Financial Officer D Stock Option (right to buy) 500000 $0.00 0.0000 0 100.00% 0.00%
Nov. 16, 2023 Lee Gary K. Chief Scientific Officer A Stock Option (right to buy) 800000 $0.00 800,000.0000 0 9999.99% 0.00%
Nov. 16, 2023 Lee Gary K. Chief Scientific Officer D Stock Option (right to buy) 800000 $0.00 0.0000 0 100.00% 0.00%
Nov. 16, 2023 Seely Lynn President and CEO A Stock Option (right to buy) 7500000 $0.00 7,500,000.0000 0 9999.99% 0.00%
Nov. 16, 2023 Seely Lynn President and CEO D Stock Option (right to buy) 7500000 $0.00 0.0000 0 100.00% 0.00%
Nov. 16, 2023 Hill Stephen J. Chief Technical Ops. Officer A Stock Option (right to buy) 500000 $0.00 500,000.0000 0 9999.99% 0.00%
Sept. 8, 2023 Bishop Hans Edgar Director A Option (right to buy) 55000 $0.00 55,000.0000 0 9999.99% 0.00%
Sept. 8, 2023 Klausner Richard Director A Option (right to buy) 55000 $0.00 55,000.0000 0 9999.99% 0.00%
Sept. 8, 2023 RIEFLIN WILLIAM JL Director A Option (right to buy) 55000 $0.00 55,000.0000 0 9999.99% 0.00%
Sept. 8, 2023 FRIEDMAN CATHY Director A Option (right to buy) 55000 $0.00 55,000.0000 0 9999.99% 0.00%
Sept. 8, 2023 NELSEN ROBERT Director A Option (right to buy) 55000 $0.00 55,000.0000 0 9999.99% 0.00%
Sept. 8, 2023 NABEL ELIZABETH G Director A Option (right to buy) 55000 $0.00 55,000.0000 0 9999.99% 0.00%
Sept. 8, 2023 BRAWLEY OTIS W Director A Option (right to buy) 55000 $0.00 55,000.0000 0 9999.99% 0.00%
Aug. 15, 2023 Klausner Richard Director S Common Stock 58020 $2.28 3,898,714.0000 0 1.47% 0.00%
Aug. 10, 2023 Lang Matthew Chief Business Officer A Option (right to buy) 2250000 $0.00 2,250,000.0000 0 9999.99% 0.00%
June 16, 2023 FRIEDMAN CATHY Director A Option (right to buy) 65000 $0.00 65,000.0000 0 9999.99% 0.00%
June 16, 2023 BRAWLEY OTIS W Director A Option (right to buy) 65000 $0.00 65,000.0000 0 9999.99% 0.00%
June 16, 2023 Klausner Richard Director A Option (right to buy) 65000 $0.00 65,000.0000 0 9999.99% 0.00%
June 16, 2023 NABEL ELIZABETH G Director A Option (right to buy) 65000 $0.00 65,000.0000 0 9999.99% 0.00%
June 16, 2023 NELSEN ROBERT Director A Option (right to buy) 65000 $0.00 65,000.0000 0 9999.99% 0.00%
June 16, 2023 RIEFLIN WILLIAM JL Director A Option (right to buy) 65000 $0.00 65,000.0000 0 9999.99% 0.00%
June 16, 2023 Bishop Hans Edgar Director A Option (right to buy) 65000 $0.00 65,000.0000 0 9999.99% 0.00%
Feb. 24, 2023 Albertson Tina M. Chief Medical Officer A Option (right to buy) 700000 $0.00 700,000.0000 0 9999.99% 0.00%
Feb. 24, 2023 Hill Stephen J. Chief Technical Ops. Officer A Option (right to buy) 900000 $0.00 900,000.0000 0 9999.99% 0.00%
Feb. 24, 2023 Lee Gary K. Chief Scientific Officer A Option (right to buy) 600000 $0.00 600,000.0000 0 9999.99% 0.00%
Feb. 24, 2023 Thompson Rahsaan Chief Legal Officer A Option (right to buy) 245000 $0.00 245,000.0000 0 9999.99% 0.00%
Feb. 24, 2023 Newton Charles W. Chief Financial Officer A Option (right to buy) 700000 $0.00 700,000.0000 0 9999.99% 0.00%