| Item 1. | |
| (a) | Name of issuer:
Latigo Biotherapeutics, Inc. |
| (b) | Address of issuer's principal executive offices:
1300 Rancho Conejo Boulevard, Suite 305, Thousand Oaks, CA 91320 |
| Item 2. | |
| (a) | Name of person filing:
AI Biotechnology LLC
Access Industries Holdings LLC ("AIH")
Access Industries Management, LLC ("AIM")
Len Blavatnik |
| (b) | Address or principal business office or, if none, residence:
The principal business office of each reporting person is c/o Access Industries, Inc., 40 West 57th Street, 28th Floor, New York, NY 10019. |
| (c) | Citizenship:
Each of AI Biotechnology, AIH and AIM is a limited liability company organized under the laws of the State of Delaware.
Mr. Blavatnik 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.:
|
| 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);
|
| (b) | Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
|
| (c) | Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
|
| (d) | Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
|
| (e) | An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
|
| (f) | An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
|
| (g) | A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
|
| (h) | A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
|
| (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);
|
| (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:
|
| (k) | Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
|
| | |
| Item 4. | Ownership |
| (a) | Amount beneficially owned:
See the responses to Item 9 on the attached cover pages. |
| (b) | Percent of class:
See the responses to Item 11 on the attached cover pages. The percentages reported in Item 11 on the attached cover pages are based upon 63,238,030 shares of Common Stock outstanding immediately following the Issuer's initial public offering, as reported in the Issuer's prospectus filed pursuant to Rule 424(b)(4) with the SEC on August 7, 2026. |
| (c) | Number of shares as to which the person has:
|
| | (i) Sole power to vote or to direct the vote:
See the responses to Item 5 on the attached cover pages.
|
| | (ii) Shared power to vote or to direct the vote:
See the responses to Item 6 on the attached cover pages.
|
| | (iii) Sole power to dispose or to direct the disposition of:
See the responses to Item 7 on the attached cover pages.
|
| | (iv) Shared power to dispose or to direct the disposition of:
See the responses to Item 8 on the attached cover pages.
3,185,177 shares of Common Stock are held directly by AI Biotechnology and may also be deemed to be beneficially owned by AIH, AIM and Mr. Blavatnik because (i) Mr. Blavatnik controls AIM and holds a majority of the outstanding voting interests in AIH, (ii) AIM controls AIH, and (iii) AIH controls all of the outstanding voting interests in AI Biotechnology. Each of the Reporting Persons (other than AI Biotechnology) and each of their affiliated entities and the officers, partners, members and managers thereof, disclaims beneficial ownership of these securities.
|
| Item 5. | Ownership of 5 Percent or Less of a Class. |
| |
Not Applicable
|
| Item 6. | Ownership of more than 5 Percent on Behalf of Another Person. |
| |
Not Applicable
|
| Item 7. | Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person. |
| |
Not Applicable
|
| Item 8. | Identification and Classification of Members of the Group. |
| |
Not Applicable
|
| Item 9. | Notice of Dissolution of Group. |
| |
Not Applicable
|
Rule 13d-1(c)