RSU vesting triggers tax share withholding at Mativ (NYSE: MATV)

Rhea-AI Filing Summary

Mativ Holdings Controller Cheryl Allegri reported a routine tax-related stock transaction. On March 19, 2026, 965 shares of common stock were withheld at $8.53 per share to satisfy tax obligations from the vesting of restricted stock units granted on March 19, 2025.

After this tax-withholding disposition, Allegri directly holds 17,377 shares of Mativ common stock. The filing also adjusts her reported balance to correct a prior overreporting of 978 shares in an earlier Form 4.

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^*

Allegri Cheryl

(Last) (First) (Middle)

C/O MATIV HOLDINGS, INC,

100 KIMBALL PLACE, SUITE 600

(Street)

ALPHARETTA GEORGIA 30009

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
Mativ Holdings, Inc. [ MATV ]

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

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
03/19/2026

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
Common Stock	03/19/2026		F		965(1)	D	$8.53	17,377(2)	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 (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. These shares represent the shares withheld to satisfy tax withholding obligations arising from the vesting of RSUs granted on March 19, 2025.

2. The balance was adjusted to account for the overreporting of 978 shares on the Reporting Persons Form 4 filed on March 14, 2025.

Remarks:

	/s/ Mark W. Johnson, attorney-in-fact for Cheryl Allegri, principal	03/23/2026
	** 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)

FAQ

What insider transaction did Mativ (MATV) report for Cheryl Allegri?

Mativ reported a tax-withholding disposition for Controller Cheryl Allegri. On March 19, 2026, 965 common shares were withheld to cover taxes from vesting restricted stock units, rather than being sold in the open market.

How many Mativ (MATV) shares were involved in Cheryl Allegri’s Form 4?

The Form 4 shows 965 Mativ common shares withheld. These shares were used to satisfy tax withholding obligations tied to RSUs that vested from a grant dated March 19, 2025, according to the filing footnotes.

Was Cheryl Allegri’s Mativ (MATV) transaction an open-market sale?

No, the transaction was not an open-market sale. The 965 shares were withheld by the company to pay tax liabilities from RSU vesting, a standard non-market mechanism rather than a discretionary stock sale.

What are Cheryl Allegri’s Mativ (MATV) holdings after this Form 4?

After the reported tax-withholding, Allegri holds 17,377 shares. The filing states this as her direct ownership of Mativ common stock following the 965-share tax-withholding disposition related to vesting restricted stock units.

Did the Mativ (MATV) Form 4 include any corrections to prior reports?

Yes, the Form 4 corrects a past overreporting. A footnote explains that Allegri’s balance was adjusted to fix an overreporting of 978 shares that appeared in a Form 4 filed on March 14, 2025.

What caused the tax-withholding transaction for Mativ (MATV) shares?

The tax-withholding arose from vesting restricted stock units. Footnotes state the 965 withheld shares satisfied tax obligations from RSUs originally granted on March 19, 2025, when those awards vested on March 19, 2026.