X0508 4 2026-02-24 false 0001000623 Mativ Holdings, Inc. MATV 0001927959 Allegri Cheryl C/O MATIV HOLDINGS, INC, 100 KIMBALL PLACE, SUITE 600 ALPHARETTA GA 30009 false true false false Controller false RSU 2026-02-24 4 A false 7812.00 A Common Stock 7812.00 7812.00 D On February 24, 2026, the reporting person was granted 7,812 Restricted Stock Units ("RSUs") subject to time vesting. Such RSUs vest in three equal annual installments on the anniversary of the grant date (February 24, 2027, February 24, 2028, and February 24, 2029). Each RSU represents a right to receive one share of the common stock of the issuer upon vesting. /s/ Brian Park, attorney-in-fact for Cheryl Allegri, principal 2026-02-26