Mativ Holdings, Inc.
US ˙ NYSE

SecurityMATV / Mativ Holdings, Inc.
InstitutionEngineers Gate Manager LP
Latest Disclosed Ownership204,184 shares
Latest Disclosed Value $ 1,776,400
Engineers Gate Manager LP reports 81.55% increase in ownership of MATV / Mativ Holdings, Inc.

On May 15, 2026 - Engineers Gate Manager LP filed a 13F-HR form disclosing ownership of 204,184 shares of Mativ Holdings, Inc. (US:MATV) valued at $1,776,401 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 112,465 shares of Mativ Holdings, Inc.. This represents a change in shares of 81.55% during the quarter. The current value of the position is $1,547,715 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 204,184 91,719 81.55 1,776 30.01 0.0222
2026-02-17 2025-12-31 13F MATIV HOLDINGS COM 808541106 112,465 -27,230 -19.49 1,366 -13.49 0.0162
2025-11-14 2025-09-30 13F MATIV HOLDINGS COM 808541106 139,695 13,119 10.36 1,580 82.97 0.0181
2025-08-14 2025-06-30 13F MATIV HOLDINGS COM 808541106 126,576 76,765 154.11 863 178.39 0.0107
2025-05-15 2025-03-31 13F MATIV HOLDINGS COM 808541106 49,811 30,848 162.67 310 50.49 0.0052
2025-02-14 2024-12-31 13F MATIV HOLDINGS COM 808541106 18,963 6,811 56.05 207 0.00 0.0036
2024-11-14 2024-09-30 13F MATIV HOLDINGS COM 808541106 12,152 12,152 206 0.0040
2024-05-15 2024-03-31 13F MATIV HOLDINGS COM 808541106 0 -35,569 -100.00 0 -100.00
2024-02-14 2023-12-31 13F MATIV HOLDINGS COM 808541106 35,569 35,569 545 0.0155
2023-11-14 2023-09-30 13F MATIV HOLDINGS COM 808541106 0 -19,542 -100.00 0 -100.00
2023-08-14 2023-06-30 13F MATIV HOLDINGS COM 808541106 19,542 5,925 43.51 295 1.03 0.0112
2023-05-15 2023-03-31 13F MATIV HOLDINGS COM 808541106 13,617 13,617 292 0.0122
2022-05-16 2022-03-31 13F SCHWEITZER-MAUDUIT INTL COM 808541106 0 -18,057 -100.00 0 -100.00
2022-02-14 2021-12-31 13F SCHWEITZER-MAUDUIT INTL COM 808541106 18,057 10,607 142.38 540 109.30 0.0243
2021-11-15 2021-09-30 13F SCHWEITZER-MAUDUIT INTL COM 808541106 7,450 7,450 258 0.0147
2019-05-15 2019-03-31 13F SCHWEITZER-MAUDUIT INTL COM 808541106 0 -31,673 -100.00 0 -100.00
2019-02-14 2018-12-31 13F SCHWEITZER-MAUDUIT INTL COM 808541106 31,673 18,247 135.91 793 54.28 0.0635
2018-11-01 2018-09-30 13F SCHWEITZER-MAUDUIT INTL COM 808541106 13,426 -4,586 -25.46 514 -34.69 0.0395
2018-08-03 2018-06-30 13F SCHWEITZER-MAUDUIT INTL COM 808541106 18,012 -1,890 -9.50 787 1.03 0.0613
2018-05-07 2018-03-31 13F SCHWEITZER-MAUDUIT INTL COM 808541106 19,902 19,902 779 0.0519
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.