MasterBrand, Inc.
US ˙ NYSE

SecurityMBC / MasterBrand, Inc.
InstitutionCommerce Bank
Latest Disclosed Ownership54,059 shares
Latest Disclosed Value $ 449,230
Commerce Bank reports 22.43% increase in ownership of MBC / MasterBrand, Inc.

On May 11, 2026 - Commerce Bank filed a 13F-HR form disclosing ownership of 54,059 shares of MasterBrand, Inc. (US:MBC) valued at $449,230 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 44,156 shares of MasterBrand, Inc.. This represents a change in shares of 22.43% during the quarter. The current value of the position is $459,502 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)
2026-05-11 2026-03-31 13F MASTERBRAND COMMON STOCK 57638P104 54,059 9,903 22.43 449 -7.80 0.0009
2026-02-13 2025-12-31 13F MASTERBRAND COMMON STOCK 57638P104 44,156 -700 -1.56 487 -17.46 0.0027
2025-11-12 2025-09-30 13F MASTERBRAND COMMON STOCK 57638P104 44,856 -350 -0.77 591 19.43 0.0033
2025-08-07 2025-06-30 13F MASTERBRAND COMMON STOCK 57638P104 45,206 68 0.15 494 -16.13 0.0029
2025-05-08 2025-03-31 13F MASTERBRAND COMMON STOCK 57638P104 45,138 0 0.00 590 -10.62 0.0038
2025-02-13 2024-12-31 13F MASTERBRAND COMMON STOCK 57638P104 45,138 0 0.00 659 -21.17 0.0041
2024-11-08 2024-09-30 13F MASTERBRAND COMMON STOCK 57638P104 45,138 -1,251 -2.70 837 22.94 0.0051
2024-08-12 2024-06-30 13F MASTERBRAND COMMON STOCK 57638P104 46,389 -800 -1.70 681 -23.08 0.0044
2024-05-03 2024-03-31 13F MASTERBRAND COMMON STOCK 57638P104 47,189 -1,498 -3.08 884 22.27 0.0058
2024-02-09 2023-12-31 13F MASTERBRAND COMMON STOCK 57638P104 48,687 469 0.97 723 23.59 0.0051
2023-11-14 2023-09-30 13F MASTERBRAND COMMON STOCK 57638P104 48,218 -36 -0.07 586 4.28 0.0046
2023-08-08 2023-06-30 13F MASTERBRAND COMMON STOCK 57638P104 48,254 26,192 118.72 561 216.95 0.0042
2023-05-04 2023-03-31 13F MASTERBRAND COMMON STOCK 57638P104 22,062 -730 -3.20 177 2.91 0.0014
2023-02-10 2022-12-31 13F MASTERBRAND COMMON STOCK 57638P104 22,792 22,792 172 0.0014
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.