Sec Form 4 Filing - Leddy Peter Michael @ MARAVAI LIFESCIENCES HOLDINGS, INC. - 2022-07-15

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person Leddy Peter Michael 2. Issuer Name and Ticker or Trading Symbol MARAVAI LIFESCIENCES HOLDINGS, INC. [ MRVI] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) See Remarks (Last) (First) (Middle) C/O MARAVAI LIFESCIENCES HOLDINGS, INC., 10770 WATERIDGE CIRCLE, SUITE 200 3. Date of Earliest Transaction (MM/DD/YY) 07/15/2022 (Street) SAN DIEGO, CA92121 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) __ X __ Form filed by One Reporting Person _____ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Class A Common Stock 07/15/2022 A 63,498 A 63,498 D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities) 1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5) 6. Date Exercisable and Expiration Date (MM/DD/YY) 7. Title and Amount of Underlying Securities (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares Employee Stock Option (Right to Buy) $ 24.94 07/15/2022 A 122,893 ( 2 ) 07/15/2032 Class A Common Stock 122,893 $ 0 122,893 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Leddy Peter Michael C/O MARAVAI LIFESCIENCES HOLDINGS, INC. 10770 WATERIDGE CIRCLE, SUITE 200 SAN DIEGO, CA92121 See Remarks Signatures /s/ Kurt Oreshack, by power of attorney for Peter Leddy 07/19/2022 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Represents restricted stock units ("RSUs") awarded under the Maravai LifeSciences Holdings, Inc. 2020 Omnibus Incentive Plan. Each RSU represents the right to receive one share of Class A Common Stock of the Issuer upon vesting, subject to the Reporting Person's continued employment with the Issuer. The RSUs will vest in 1/3rd increments on each of July 15, 2023, July 15, 2024, and July 15, 2025, subject to the Reporting Person's continued employment with the Issuer. ( 2 )Represents options awarded under the Maravai LifeSciences Holdings, Inc. 2020 Omnibus Incentive Plan. These options will vest 25% on July 15, 2023 and in equal 1/48th installments each month thereafter, subject to the Reporting Person's continued employment with the Issuer.

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

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