SCHEDULE 13G/A 0001540531-24-000007 0001540531 XXXXXXXX LIVE 4 Class A Common Stock, par value $0.01 per share 12/31/2025 0001823239 MARAVAI LIFESCIENCES HOLDINGS, INC. 56600D107 10770 WATERIDGE CIRCLE SUITE 200 SAN DIEGO CA 92121 Rule 13d-1(c) 12 West Capital Management LP DE 0.00 8921335.00 0.00 8921335.00 8921335.00 N 6.2 IA PN Joel Ramin X1 0.00 8921335.00 0.00 8921335.00 8921335.00 N 6.2 HC IN MARAVAI LIFESCIENCES HOLDINGS, INC. 10770 Wateridge Circle, Suite 200, San Diego, CA 92121 This statement is filed by: (i) 12 West Capital Management LP ("12 West Management"), a Delaware limited partnership, and the investment manager to 12 West Capital Fund LP, a Delaware limited partnership, and 12 West Capital Offshore Fund LP, a Cayman Islands exempted limited partnership ("12 West Funds"), with respect to the shares of Class A common stock, par value $0.01 per share ("Class A Common Stock"), of Maravai LifeSciences Holdings, Inc. (the "Company") directly held by the 12 West Funds; and (ii) Mr. Joel Ramin ("Mr. Ramin"), the managing member of 12 West Capital Management, LLC, the general partner of 12 West Management, with respect to the shares of Class A Common Stock directly held by the 12 West Funds. The foregoing persons are hereinafter sometimes each referred to as a "Reporting Person" and collectively referred to as the "Reporting Persons." The filing of this statement should not be construed as an admission that any Reporting Person is, for purposes of Section 13 of the Securities Exchange Act of 1934, the beneficial owner of the securities reported herein. The address of the principal business office of each of the Reporting Persons is 475 Tenth Avenue, 14th Floor, New York, NY 10018. 12 West Management is a Delaware limited partnership. Mr. Ramin is a United States citizen. Y The information required by Item 4(a) is set forth in Row 9 of the cover page for each of the Reporting Persons and is incorporated herein by reference. The percentage set forth in this Schedule 13G is calculated based upon an aggregate of 145,022,751 shares of Class A Common Stock outstanding as of October 31, 2025, as reported in the Company's Quarterly Report on Form 10-Q for the quarterly period ended September 30, 2025, filed with the Securities and Exchange Commission on November 7, 2025. 6.2% The information required by Item 4(c)(i) is set forth in Row 5 of the cover page for each of the Reporting Persons and is incorporated herein by reference. The information required by Item 4(c)(ii) is set forth in Row 6 of the cover page for each of the Reporting Persons and is incorporated herein by reference. The information required by Item 4(c)(iii) is set forth in Row 7 of the cover page for each of the Reporting Persons and is incorporated herein by reference. The information required by Item 4(c)(iv) is set forth in Row 8 of the cover page for each of the Reporting Persons and is incorporated herein by reference. Y N See Item 2(a). The 12 West Funds have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, the shares of Class A Common Stock reported herein. Y Y Y N By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under ?? 240.14a-11. 12 West Capital Management LP /s/ Joel Ramin 02/17/2026 Joel Ramin /s/ Joel Ramin 02/17/2026