Skip to content
Baker Capital StrategiesMARKETS. FILINGS. PERSPECTIVE.
Powered by THEMA

BAKER CAPITAL STRATEGIES

Get the free weekly BCS email.

Selected company filings and market updates, delivered by email. Your first report will follow soon.

  • Your weekly BCS reportMarket updates and links to filings you can explore.
  • THEMA at launchWe’ll send directions for setting up your filing alerts when THEMA officially opens.

One signup for the weekly email and your free THEMA Basic account at launch.

Already registered or a CSW member?Log in to THEMA →

At least 8 characters. This also creates your free THEMA account for launch.

You’re signing up for the weekly BCS email and THEMA launch/setup updates. Unsubscribe using the link in any email. Privacy policy · Terms

BCS

Changes in Beneficial Ownership · 4

Lyell Immunopharma, Inc.

LYELNASDAQEQUITYCurrent

Changes in Beneficial Ownership

Filed Aug 11, 2026Accepted Aug 11, 2026, 4:07 PM EDTFiling CIK 1806952Accession 0001327111-26-000004
Share

Structured filing — 4

form4-08112026_080842.xml

Open full document ↗

Filing details

Report period
2026-08-10
Issuer
Lyell Immunopharma, Inc.
Issuer CIK
0001806952
Trading symbol
LYEL

Reporting owner 1

Name
Seely Lynn
Reporting owner CIK
0001327111
Relationship
Director · Officer
Officer title
President and CEO
Address
C/O LYELL IMMUNOPHARMA, INC., 201 HASKINS WAY, SOUTH SAN FRANCISCO, CA, 94080

Non-derivative transactions

Non-derivative transactions · 1 reported row
SecurityTransaction dateCodeAmountA / DPrice (USD)Owned afterOwnership
Common Stock2026-08-10S · Form 4390[F1]D14.34[F2]73,488D
Table key
S · Form 4
Sale on the market or privately
D
Direct

Footnotes

F1
Shares automatically sold to cover tax withholding obligation from settlement of vested restricted stock units.↩ 1
F2
The price reported above reflects the weighted average price of the shares sold. The sale price ranged from $14.22 to $14.34 per share. Upon request from the SEC staff, the Issuer, or a security holder of the Issuer, the Reporting Person will provide full information regarding the number of shares sold at each separate price within the range set forth in this Form 4.↩ 1

Signature 1

Signed
/s/ Mark Meltz, Attorney-in-Fact
Date
2026-08-11

Company context

Lyell is a clinical-stage company advancing a pipeline of next-generation CAR T-cell therapies for patients with hematologic malignancies and solid tumors. To realize the potential of cell therapy for cancer, Lyell utilizes a suite of technologies to endow CAR T cells with attributes needed to drive durable tumor cytotoxicity and achieve consistent and long-lasting clinical responses, including the ability to resist exhaustion, maintain qualities of durable stemness and function in the hostile tumor microenvironment. Lyell’s lead product candidate, LYL314, is a next-generation dual-targeting CD19/CD20 CAR T-cell product candidate designed to increase complete response rates and prolong the duration of the responses as compared to the approved CD19-targeted CAR T-cell therapies for the treatment of large B-cell lymphoma. The PiNACLE trial is an ongoing single-arm pivotal trial evaluating LYL314 in patients with large B-cell lymphoma that has relapsed and/or been refractory to two or more lines of prior therapy. The Lyell LyFE Manufacturing Center™ has commercial launch capability and can manufacture more than 1,200 CAR T-cell doses at full capacity. To learn more, please visit www.lyell.com.

Current securities

Recent company filings

  1. SCHEDULE 13G/A - filed by ARCH Venture Fund IX, L.P. regarding Lyell Immunopharma, Inc.Nov 10, 2026
  2. 4 filingNov 5, 2026
  3. 10-Q filingNov 4, 2026
  4. Results of Operations and Financial ConditionNov 4, 2026
  5. Unregistered Sales of Equity SecuritiesNov 4, 2026

Privacy choices

BCS measures page use with Google Analytics using regional consent settings. You can change your preference here. Charts and market data remain available.

Essential functions — always available. Security, navigation, registration and remembering these choices.

Audience analytics

Analytics cookies are off by default for visitors Google identifies in the EEA, UK or Switzerland until allowed. Limited measurement without analytics cookies may still occur under those regional defaults.

TradingView charts, quotes and the economic calendar load automatically as page content. TradingView receives network and browser information and may collect its own usage analytics. This choice controls BCS’s Google Analytics only.

Google advertising is not enabled. Direct sponsor links do not load advertising trackers on BCS.

Turning analytics off stops future Google Analytics activity here. It does not erase information already received by the provider. Read the privacy policy.