| Item 1. | |
| (a) | Name of issuer:
Lyell Immunopharma, Inc. |
| (b) | Address of issuer's principal executive offices:
201 Haskins Way, South San Francisco, CA, 94080. |
| Item 2. | |
| (a) | Name of person filing:
Explore Investments LLC, a Delaware limited liability company ("Explore")
Jeffrey P. Bezos, an Individual ("Mr. Bezos" and together with Explore, the "Reporting Persons") |
| (b) | Address or principal business office or, if none, residence:
The address of the principal business office of each of the Reporting Persons is:
P.O. Box 6470
Surfside, FL 33154 |
| (c) | Citizenship:
Explore is formed in the State of Delaware. Mr. Bezos is a citizen of the United States of America. |
| (d) | Title of class of securities:
Common Stock, par value $0.0001 per share |
| (e) | CUSIP No.:
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| Item 3. | If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a: |
| (a) |  Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
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| (b) | Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
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| (c) | Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
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| (d) | Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
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| (e) | An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
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| (f) | An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
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| (g) | A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
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| (h) | A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
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| (i) | A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
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| (j) | A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J),
please specify the type of institution:
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| (k) | Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
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| | |
| Item 4. | Ownership |
| (a) | Amount beneficially owned:
Reference to "beneficial ownership" of securities for purposes of this amendment 1 to the statement on Schedule 13G (this "Statement") shall be understood to refer to beneficial ownership as that term is defined in Rule 13d-3 of the Securities Exchange Act of 1934, as amended (the "Exchange Act").
As of March 31, 2026, the Reporting Persons may each be deemed to directly or indirectly beneficially own an aggregate 1,529,054 shares of the Issuer's common stock.
Explore is the direct holder of all the shares identified in the preceding paragraph. For purposes of Rule 13d-3 under the Exchange Act, all of the aforementioned securities of the Issuer directly held by Explore may be deemed to be beneficially owned by Mr. Bezos as the sole member of Explore. Notwithstanding, the filing of this Statement shall not be construed as an admission by Mr. Bezos, for purposes of Sections 13(d) or 13(g) of the Exchange Act or otherwise, as to beneficial ownership of the securities reported herein.
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| (b) | Percent of class:
As of March 31, 2026, the Reporting Persons were each deemed to directly or indirectly beneficially own an aggregate 6.6% of the Issuer's outstanding common stock.
The aforementioned percentage was calculated in accordance with Rule 13(d)-3(d)(1)(i) promulgated under the Exchange Act and based on an aggregate total of 23,328,390 shares of the Issuer's common stock outstanding as of March 31, 2026, as reported by the Issuer in its preliminary prospectus (the "Prospectus") (File No. 333-294884) dated April 3, 2026, incorporated in the Issuer's Form S-3 registration statement filed with the SEC on April 3, 2026.
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| (c) | Number of shares as to which the person has:
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| | (i) Sole power to vote or to direct the vote:
Explore 0
Mr. Bezos 0
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| | (ii) Shared power to vote or to direct the vote:
Explore 1,529,054
Mr. Bezos 1,529,054
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| | (iii) Sole power to dispose or to direct the disposition of:
Explore 0
Mr. Bezos 0
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| | (iv) Shared power to dispose or to direct the disposition of:
Explore 1,529,054
Mr. Bezos 1,529,054
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| Item 5. | Ownership of 5 Percent or Less of a Class. |
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Not Applicable
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| Item 6. | Ownership of more than 5 Percent on Behalf of Another Person. |
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Not Applicable
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| Item 7. | Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person. |
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Not Applicable
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| Item 8. | Identification and Classification of Members of the Group. |
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Not Applicable
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| Item 9. | Notice of Dissolution of Group. |
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Not Applicable
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Rule 13d-1(c)