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LYEL · Current Report (Form 8-K) · Filed May 6, 2026

Lyell Immunopharma Inc — Current Report (Form 8-K)

Form
8-K
Filed
May 6, 2026
Period
May 6, 2026
Ticker
LYEL
Accession
0001628280-26-031269
Boardroom Alpha · Filing insights

Lyell Immunopharma reports Q1 2026 results for quarter ended March 31 via May 6 press release.

About Lyell Immunopharma Inc
Market cap
$347M
1Y TSR
+85.9%
3Y TSR
−34.5%
Board grade
C-
Sector
Healthcare
CEO
Lynn Seely
Last annual meeting: Jun 10, 2026 · View full Lyell Immunopharma Inc profile →
lyel-20260506

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549
______________________________________________
FORM 8-K
______________________________________________
CURRENT REPORT
Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934
Date of Report (Date of earliest event reported): May 6, 2026
______________________________________________
Lyell Immunopharma, Inc.
(Exact name of Registrant as Specified in Its Charter)
______________________________________________
Delaware001-4050283-1300510
(State or Other Jurisdiction
of Incorporation)
(Commission File Number)(IRS Employer
Identification No.)
201 Haskins Way
South San Francisco, California
94080
(Address of Principal Executive Offices)(Zip Code)
Registrant’s Telephone Number, Including Area Code: 650 695-0677
(Former Name or Former Address, if Changed Since Last Report)
Not Applicable
______________________________________________
Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:
o
Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
o
Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
o
Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
o
Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))
Securities registered pursuant to Section 12(b) of the Act:
Title of each classTrading
Symbol(s)
Name of each exchange on which registered
Common Stock, $0.0001 par value per shareLYELNASDAQ Global Select Market
Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§ 230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§ 240.12b-2 of this chapter).
Emerging growth company o
If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. o



Item 2.02 Results of Operations and Financial Condition.
On May 6, 2026, Lyell Immunopharma, Inc. (the “Company”) issued a press release announcing its financial results for the quarter ended March 31, 2026. A copy of the press release is attached hereto as Exhibit 99.1.
The information in this Item 2.02, including the attached Exhibit 99.1, is being furnished and shall not be deemed “filed” for the purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference into any filing made by the Company under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such a filing.
Item 9.01 Financial Statements and Exhibits.
(d) Exhibits
Exhibit NumberDescription
99.1
104Cover Page Interactive Data File (embedded within the Inline XBRL document)



SIGNATURES
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.
Lyell Immunopharma, Inc.
Date:May 6, 2026By:/s/ MARK MELTZ
Mark Meltz
General Counsel and Corporate Secretary

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Reference

Frequently asked questions

When did Lyell Immunopharma Inc file this 8-K?
Lyell Immunopharma Inc (LYEL) filed this Current Report (Form 8-K) with the SEC on May 6, 2026. The accession number assigned by EDGAR is 0001628280-26-031269.
What does an 8-K disclose?
Form 8-K is the SEC's current-report form, used to disclose material events between periodic reports (10-K / 10-Q). Triggers include CEO/CFO departures, acquisitions, bankruptcies, earnings releases, auditor changes, changes in fiscal year, and amendments to corporate governance. Each 8-K is keyed to one or more Item numbers (1.01 through 9.01).
What is the key takeaway from this filing?
Lyell Immunopharma reports Q1 2026 results for quarter ended March 31 via May 6 press release. This is Boardroom Alpha's one-line summary of the current report; see the full filing text above for the formal disclosure.
What Item codes does an 8-K cover?
An 8-K's Item codes (1.01 through 9.01) specify what kind of event is being disclosed — e.g. Item 1.01 for entering a material agreement, Item 5.02 for departure/election of directors and executive officers, Item 8.01 for other events. The Item codes for this 8-K appear in the filing text above.
Where can I find Lyell Immunopharma Inc's prior current reports on EDGAR?
The SEC EDGAR browser lists every 8-K Lyell Immunopharma Inc has filed under CIK 1806952, sortable by date. Use the "View on SEC EDGAR" link in the page header, or browse directly via https://www.sec.gov/cgi-bin/browse-edgar.
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