| Item 1. | |
| (a) | Name of issuer:
Carisma Therapeutics Inc. |
| (b) | Address of issuer's principal executive offices:
3675 Market Street, Suite 401, Philadelphia, PA, 19104 |
| Item 2. | |
| (a) | Name of person filing:
AbbVie Biotechnology Ltd. |
| (b) | Address or principal business office or, if none, residence:
Thistle House, 4 Burnaby Street
Hamilton HM 11, Bermuda |
| (c) | Citizenship:
See response to Item 4 on the cover page. |
| (d) | Title of class of securities:
Common Stock, $0.001 par value |
| (e) | CUSIP No.:
14216R101 |
| 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:
See response to Item 9 on the cover page. |
| (b) | Percent of class:
See response to Item 11 on the cover page. |
| (c) | Number of shares as to which the person has:
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| | (i) Sole power to vote or to direct the vote:
See response to Item 5 on the cover page.
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| | (ii) Shared power to vote or to direct the vote:
See response to Item 6 on the cover page.
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| | (iii) Sole power to dispose or to direct the disposition of:
See responses to Item 7 on the cover page.
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| | (iv) Shared power to dispose or to direct the disposition of:
See response to Item 8 on the cover page.
The number of shares and percentages reflected herein include sales of common stock from March 31, 2025 through the date hereof.
The Board of Directors of AbbVie Biotechnology Ltd., which consists of Lindsey Bristow, Wayne Klintworth, Jonathan C. Clipper, Stephen Muldoon and Arthur Price and acts by majority vote, exercises voting and investment discretion of the reported securities. Each of Ms. Bristow and each of Messrs. Klintworth, Clipper, Muldoon and Price disclaim beneficial ownership of the reported securities and the filing of this statement shall not be deemed an admission of such beneficial ownership for purposes of Section 13.
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| Item 5. | Ownership of 5 Percent or Less of a Class. |
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Ownership of 5 percent or less of a class
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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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