Mativ Holdings, Inc.
US ˙ NYSE

SecurityMATV / Mativ Holdings, Inc.
InstitutionAdvisor Group Holdings, Inc.
Latest Disclosed Ownership11,430 shares
Latest Disclosed Value $ 99,439
Advisor Group Holdings, Inc. reports 1.48% decrease in ownership of MATV / Mativ Holdings, Inc.

On May 15, 2026 - Advisor Group Holdings, Inc. filed a 13F-HR form disclosing ownership of 11,430 shares of Mativ Holdings, Inc. (US:MATV) valued at $99,441 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 11,602 shares of Mativ Holdings, Inc.. This represents a change in shares of -1.48% during the quarter. The current value of the position is $85,039 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F MATIV HOLDINGS COM 808541106 11,430 -172 -1.48 99 -29.29 0.0001
2026-02-17 2025-12-31 13F MATIV HOLDINGS COM 808541106 11,602 -90 -0.77 141 -4.11 0.0002
2025-11-14 2025-09-30 13F MATIV HOLDINGS COM 808541106 11,692 24 0.21 146 84.81 0.0002
2025-09-04 2025-06-30 13F/A-1 MATIV HOLDINGS COM 808541106 11,668 10,546 939.93 80 1,216.67 0.0001
2025-08-13 2025-06-30 13F MATIV HOLDINGS COM 808541106 627 -495 6 0.0000
2025-05-12 2025-03-31 13F MATIV HOLDINGS COM 808541106 1,122 172 18.11 7 -40.00 0.0000
2025-06-06 2024-12-31 13F/A-1 MATIV HOLDINGS COM 808541106 950 -873 -47.89 10 -66.67 0.0000
2025-02-07 2024-12-31 13F MATIV HOLDINGS COM 808541106 869 -954 12 0.0000
2024-11-13 2024-09-30 13F MATIV HOLDINGS COM 808541106 1,823 -393 -17.73 31 -18.92 0.0001
2024-08-13 2024-06-30 13F MATIV HOLDINGS COM 808541106 2,216 -47,734 -95.56 38 -96.03 0.0001
2024-05-10 2024-03-31 13F MATIV HOLDINGS COM 808541106 49,950 45,216 955.13 932 1,194.44 0.0021
2024-02-12 2023-12-31 13F MATIV HOLDINGS COM 808541106 4,734 -1,845 -28.04 73 -22.58 0.0001
2023-11-13 2023-09-30 13F MATIV HOLDINGS COM 808541106 6,579 -317 -4.60 94 -10.58 0.0001
2023-08-21 2023-06-30 13F/A-1 MATIV HOLDINGS COM 808541106 6,896 -436 -5.95 104 -33.76 0.0002
2023-08-10 2023-06-30 13F MATIV HOLDINGS COM 808541106 6,896 -436 104 0.0000
2023-05-12 2023-03-31 13F MATIV HOLDINGS COM 808541106 7,332 2,977 68.36 157 70.65 0.0003
2023-02-10 2022-12-31 13F MATIV HOLDINGS COM 808541106 4,355 418 10.62 92 5.75 0.0002
2022-11-14 2022-09-30 13F MATIV HOLDINGS COM 808541106 3,937 1,383 54.15 87 33.85 0.0002
2022-08-10 2022-06-30 13F SCHWEITZER-MAUDUIT INTL COM 808541106 2,554 816 46.95 65 35.42 0.0001
2022-05-04 2022-03-31 13F SCHWEITZER-MAUDUIT INTL COM 808541106 1,738 -376 -17.79 48 -26.15 0.0001
2022-02-03 2021-12-31 13F SCHWEITZER-MAUDUIT INTL COM 808541106 2,114 -310 -12.79 65 -23.53 0.0001
2021-11-05 2021-09-30 13F SCHWEITZER-MAUDUIT INTL COM 808541106 2,424 819 51.03 85 32.81 0.0002
2021-08-02 2021-06-30 13F SCHWEITZER-MAUDUIT INTL COM 808541106 1,605 100 6.64 64 -12.33 0.0001
2021-05-13 2021-03-31 13F SCHWEITZER-MAUDUIT INTL COM 808541106 1,505 -1,760 -53.91 73 -44.27 0.0002
2021-02-10 2020-12-31 13F SCHWEITZER-MAUDUIT INTL COM 808541106 3,265 -1,196 -26.81 131 -2.96 0.0003
2020-11-12 2020-09-30 13F SCHWEITZER-MAUDUIT INTL COM 808541106 4,461 -387 -7.98 135 -16.15 0.0004
2020-08-14 2020-06-30 13F SCHWEITZER-MAUDUIT INTL COM 808541106 4,848 351 7.81 161 29.84 0.0005
2020-05-18 2020-03-31 13F SCHWEITZER-MAUDUIT INTL COM 808541106 4,497 4,497 124 0.0005
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.