Form4insider filings, from the source

Company · CIK 0001806952 · SIC 2834 — Pharmaceutical Preparations · Nasdaq

Lyell Immunopharma, Inc. · LYEL

Insider activity reported against this company. All insider holders · On EDGAR ↗

1M3M6M1Y2YAll datashares as filed — not split-adjusted
Open-market buys & salesbuys $0 · 0sales $252k · 15net −$252k
$10k$10k$100k$100k$1M$1MbuyssalesMay 10May 30Jun 20Jul 11Jul 31Aug 21Sep 11

Reported at this company — common stock

TradeReported (ET)InsiderSharesAvg priceTotalOwned afterΔ stakeFlags
Sep 10, 2026 SForm 4 →Sep 10, 7:37 pm EDTDavid ShookChief Medical Officer500$12.70$6,35020,423−2.39%
Aug 21, 2026 SForm 4 →Aug 25, 4:06 pm EDTLynn SeelyPresident and CEO, Director9,589$15.54$149,01363,899−13.0%
Aug 21, 2026 SForm 4 →Aug 25, 4:05 pm EDTStephen J. HillChief Operating Officer989$15.54$15,36916,816−5.55%
Aug 21, 2026 SForm 4 →Aug 25, 4:03 pm EDTGary K. LeeChief Scientific Officer1,457$15.54$22,64216,220−8.24%
Aug 10, 2026 SForm 4 →Aug 11, 4:21 pm EDTVeronica Sanchez BulisVP, Corporate Controller621$14.34$8,90514,799−4.03%
Aug 10, 2026 SForm 4 →Aug 11, 4:20 pm EDTGary K. LeeChief Scientific Officer131$14.34$1,87917,677−0.74%
Aug 10, 2026 SForm 4 →Aug 11, 4:18 pm EDTStephen J. HillChief Operating Officer89$14.34$1,27617,805−0.50%
Aug 10, 2026 SForm 4 →Aug 11, 4:07 pm EDTLynn SeelyPresident and CEO, Director390$14.34$5,59373,488−0.53%
Jul 27, 2026 JForm 4 →Jul 27, 9:14 pm EDTInnovative Cellular Therapeutics Holdings Ltd10% Owner44,000——2,774,980—
Jul 27, 2026 JForm 4 →Jul 27, 7:59 pm EDTInnovative Cellular Therapeutics Holdings Ltd10% Owner38,500——2,818,980—
Jul 17, 2026 SForm 4 →Jul 20, 2:55 pm EDTInnovative Cellular Therapeutics Holdings Ltd10% Owner10$13.70$1372,857,480−0.00%10b5-1
Jul 16, 2026 SForm 4 →Jul 17, 9:45 pm EDTInnovative Cellular Therapeutics Holdings Ltd10% Owner10$13.73$1372,857,490−0.00%10b5-1
Jun 29, 2026 JForm 4 →Jul 1, 12:37 pm EDTInnovative Cellular Therapeutics Holdings Ltd10% Owner76,000——2,857,500—
Jun 15, 2026 JForm 4 →Jun 18, 9:59 pm EDTInnovative Cellular Therapeutics Holdings Ltd10% Owner66,500——2,933,500— late
Jun 10, 2026 SForm 4 →Jun 11, 4:07 pm EDTDavid ShookChief Medical Officer1,977$12.64$24,98920,923−8.63%
May 11, 2026 SForm 4 →Jun 15, 6:37 pm EDTLynn SeelyPresident and CEO, Director388$18.91$7,33773,878−0.52% late
May 11, 2026 SForm 4 →Jun 15, 6:35 pm EDTGary K. LeeChief Scientific Officer130$18.92$2,46017,808−0.72% late
May 11, 2026 SForm 4 →Jun 15, 6:34 pm EDTStephen J. HillChief Operating Officer89$18.92$1,68417,894−0.49% late
May 11, 2026 SForm 4 →Jun 15, 6:32 pm EDTVeronica Sanchez BulisVP, Corporate Controller217$18.91$4,10315,420−1.39% late

Reported at this company — derivatives (options, RSUs, warrants)

TradeReported (ET)InsiderSharesAvg priceTotalOwned afterΔ stakeFlags
Sep 10, 2026 AForm 4 →Sep 10, 7:31 pm EDTJarrad Mattieu AguirreChief Medical Officer47,500——47,500—
Jun 10, 2026 AForm 4 →Jun 12, 4:25 pm EDTWilliam Jl RieflinDirector9,250——9,250—
Jun 10, 2026 AForm 4 →Jun 12, 4:23 pm EDTSumant RamachandraDirector9,250——9,250—
Jun 10, 2026 AForm 4 →Jun 12, 4:22 pm EDTElizabeth G NabelDirector9,250——9,250—
Jun 10, 2026 AForm 4 →Jun 12, 4:21 pm EDTRichard KlausnerDirector9,250——9,250—
Jun 10, 2026 AForm 4 →Jun 12, 4:19 pm EDTCathy FriedmanDirector9,250——9,250—
Jun 10, 2026 AForm 4 →Jun 12, 4:17 pm EDTOtis W BrawleyDirector9,250——9,250—
Jun 10, 2026 AForm 4 →Jun 12, 4:16 pm EDTMark BachledaDirector9,250——9,250—