Maravai Lifesciences (MRVI) CEO reports 29,250 shares withheld for tax on RSU vesting

Rhea-AI Filing Summary

MARAVAI LIFESCIENCES HOLDINGS, INC. director and Chief Executive Officer Bernd Brust reported a transaction involving 29,250 shares of Class A Common Stock on 2026-08-10. These shares were withheld to satisfy tax withholding obligations arising from the vesting of restricted stock unit awards, at a reference value of $6.23 per share. Following this tax-withholding disposition, Brust directly holds 1,590,499 Class A shares and has an additional 466,771 Class A shares held indirectly through The Bernd Brust Management Trust.

Insider Trade Summary

Net Seller: 29,250 shares

Net Sell 2 txns

Insider Brust Bernd

Role Chief Executive Officer

Type	Security	Shares	Price	Value
Tax Withholding	Class A Common Stock F1	29,250	$6.23	$182K
holding	Class A Common Stock	--	--	--

Holdings After Transaction: Class A Common Stock — 1,590,499 shares (Direct); Class A Common Stock — 466,771 shares (Indirect, The Bernd Brust Management Trust)

Footnotes (1)

1. F1. Represents shares withheld to satisfy tax withholding obligations in connection with the vesting of restricted stock unit awards held by the reporting person.

Key Figures

Shares withheld for tax: 29,250 shares Per-share value: $6.23 per share Direct holdings after transaction: 1,590,499 shares +1 more

4 metrics

Shares withheld for tax 29,250 shares Shares of Class A Common Stock withheld on 2026-08-10 for tax obligations on RSU vesting

Per-share value $6.23 per share Reference value for the 29,250 withheld shares

Direct holdings after transaction 1,590,499 shares Class A Common Stock directly owned by Bernd Brust following the tax-withholding disposition

Indirect holdings via trust 466,771 shares Class A Common Stock held indirectly through The Bernd Brust Management Trust

Key Terms

restricted stock unit, tax withholding obligations, indirect ownership

3 terms

restricted stock unit financial

"in connection with the vesting of restricted stock unit awards held"

A restricted stock unit is a promise from a company to give an employee shares of stock after certain conditions are met, like staying with the company for a set amount of time. It’s like earning a bonus that turns into company stock once you’ve proven your commitment, making it a way to motivate and reward employees.

tax withholding obligations financial

"shares withheld to satisfy tax withholding obligations in connection"

indirect ownership financial

"shares following transaction held as indirect ownership through a trust"

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Form 4 Insider Transactions: What Each Field Means →

Available on EDGAR 08/11/2026 - 04:45 PM Accepted by SEC EDGAR 08/11/2026 - 04:44 PM Learn about SEC filing dates

FAQ

What did MRVI CEO Bernd Brust report in this Form 4 transaction?

Bernd Brust reported 29,250 Class A shares withheld on 2026-08-10 to cover tax withholding obligations tied to vesting restricted stock units, rather than an open-market purchase or sale.

Was the MRVI Form 4 transaction by Bernd Brust a market sale of shares?

No. The 29,250 shares were withheld to satisfy tax withholding obligations related to restricted stock unit vesting, not sold in an open-market transaction.

How many MRVI shares does CEO Bernd Brust hold after this Form 4 event?

After the reported tax-withholding disposition, Bernd Brust directly holds 1,590,499 Class A shares, plus 466,771 Class A shares held indirectly through The Bernd Brust Management Trust.

What was the per-share value used for the MRVI tax-withholding shares?

The 29,250 withheld shares were valued at $6.23 per share for the tax-withholding transaction associated with the vesting of restricted stock unit awards.

Does the MRVI Form 4 indicate use of a Rule 10b5-1 trading plan?

No. The filing’s Rule 10b5-1 checkbox is not marked as a plan transaction, and the footnote specifies the shares were withheld solely for tax obligations on RSU vesting.

How many MRVI shares are held indirectly for Bernd Brust?

An indirect holding of 466,771 Class A shares is reported for Bernd Brust, held through The Bernd Brust Management Trust, in addition to his direct share ownership.

SEC Form 4

FORM 4

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
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

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

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Brust Bernd

(Last) (First) (Middle)

C/O MARAVAI LIFESCIENCES HOLDINGS, INC.

10770 WATERIDGE CIRCLE, SUITE 200

(Street)

SAN DIEGO CALIFORNIA 92121

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
MARAVAI LIFESCIENCES HOLDINGS, INC. [ MRVI ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Executive Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
08/10/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	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	08/10/2026		F		29,250(1)	D	$6.23	1,590,499	D
Class A Common Stock								466,771	I	The Bernd Brust Management Trust

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 (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	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 (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (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: 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

Explanation of Responses:

1. Represents shares withheld to satisfy tax withholding obligations in connection with the vesting of restricted stock unit awards held by the reporting person.

Remarks:

	/s/ Kurt Oreshack, by power of attorney for Bernd Brust	08/11/2026
	** Signature of Reporting Person	Date
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).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)