BreachCensus

Mativ Holdings, Inc.

ManufacturingUnited States of America

SEC EDGAR CIK 0001000623

Mativ Holdings, Inc. is a manufacturing organisation in Delaware. It appears on the Massachusetts Attorney General breach-notification register and the Delaware Attorney General data security breach database with 1 confirmed incident (2 filings); the most recent notice was filed on October 3, 2022.

LEI
549300Z1FU4IDULG1R21

Data as of October 17, 2026.

Sources

Confirmed incident

Filed in DE and MA

The same incident was filed separately with 2 jurisdictions within a few days of each other (DE and MA) — shown here as one incident.

Occurred
June 21, 2022
Disclosed
October 3, 2022

Timeline

  1. October 3, 2022
    Reported to regulator Regulator

    MA AG breach notification: 704 Massachusetts residents affected

    source
  2. October 3, 2022
    Reported to regulator Regulator

    DE AG breach notification: 591 Delaware residents affected

    source
  3. October 3, 2022
    Reported to regulator Regulator

    DE AG breach notification: 591 Delaware residents affected

    source
  4. October 3, 2022
    Reported to regulator Regulator

    DE AG breach notification: 591 Delaware residents affected

    source

Notices on file

What a Delaware notice means

Governed by 6 Del. C. §12B-102. Notice to the Attorney General is required when a breach affects more than 500 Delaware residents.

Note: the count is Delaware residents only, not a total.

Delaware breach-notification register ↗

What a Massachusetts notice means

Governed by M.G.L. c. 93H. Notice to the Attorney General is required for a breach affecting any number of Massachusetts residents' personal information -- the statute sets no minimum count.

Note: the count is Massachusetts residents only, not a total.

Massachusetts breach-notification register ↗

Related

Same sector and location

Disclosed around the same time