Latest Period
Q1 2026
Security Snapshot
MasterBrand, Inc. - Common Stock, par value $0.01 per share (MBC) Institutional Ownership
CUSIP: 57638P104
13F Institutional Holders and Ownership History from Q4 2022 to Q1 2026
Institutions Reporting
331
Shares (Excl. Options)
154,895,514
Price
$8.31
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- Type / Class
- Equity / Common Stock, par value $0.01 per share
- Symbol
- MBC on NYSE
- Shares outstanding
- 128,229,394
- Price per share
- $9.36
- All holders as of 31 Mar 2026
- Q1 2026
- Total 13F shares
- 154,895,514
- Total reported value
- $1,287,558,549
- % of total 13F portfolios
- 0.01%
- Share change
- +7,949,760
- Value change
- +$61,339,586
- Number of holders
- 331
- Price from insider filings
- $9.36
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors
Quick Takeaways
- MBC - MasterBrand, Inc. - Common Stock, par value $0.01 per share is tracked under CUSIP 57638P104.
- 331 institutions reported positions in Q1 2026.
- 6 significant owners is listed from Schedule 13D/13G reporting.
What Changed
- Holder count moved from 327 to 331 between Q4 2025 and Q1 2026.
- Reported value moved from $1,621,827,739 to $1,287,558,549.
Why This Matters
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Source Evidence
Source: SEC Form 13F
Open SEC Evidence
Latest holder context comes from 331 institutions filings for Q1 2026.
Investment Quick Answers
What is CUSIP 57638P104?
CUSIP 57638P104 identifies MBC - MasterBrand, Inc. - Common Stock, par value $0.01 per share in SEC 13F datasets.
Where can I see the latest institutional holders?
Review the Q1 2026 holders report and the ownership history table below.
Next ownership checks
Use the next link that matches the question you still need to answer about this security.
- Latest 13F filings when you want to inspect fresh institutional portfolio moves.
- Latest Schedule 13D/13G reports when you need large-owner changes outside the 13F cycle.
- All institutional ownership pages to compare this security with other holder-history pages.
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP 57638P104:
Significant Owners of MasterBrand, Inc. - Common Stock, par value $0.01 per share (MBC) based on Schedule 13D/G filings
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| BlackRock, Inc. | 15% | $233,849,689 | 19,358,418 | BlackRock, Inc. | 31 Mar 2025 | |||
| Coliseum Capital Management, LLC | 9.9% | +14% | $111,586,501 | +$15,276,519 | 12,694,710 | +16% | Coliseum Capital Management, LLC | 31 Mar 2026 |
| Gates Capital Management, Inc. | 8.2% | -14% | $136,656,398 | -$21,710,429 | 10,376,340 | -14% | Gates Capital Management, L.P. | 30 Sep 2025 |
| VANGUARD CAPITAL MANAGEMENT LLC | 5.2% | $55,723,760 | 6,705,627 | Vanguard Capital Management | 31 Mar 2026 | |||
| Boston Partners | 5.2% | -17% | $58,627,612 | -$11,086,423 | 6,669,808 | -16% | Boston Partners | 31 Mar 2026 |
| DIMENSIONAL FUND ADVISORS LP | 5.2% | $72,456,359 | 6,563,076 | Dimensional Fund Advisors LP | 31 Dec 2025 |
As of 31 Mar 2026, 331 institutional investors reported holding 154,895,514 shares of MasterBrand, Inc. - Common Stock, par value $0.01 per share (MBC). This represents 121% of the company’s total 128,229,394 outstanding shares.
Top 25 Institutional Shareholders
The largest institutional shareholders of MasterBrand, Inc. - Common Stock, par value $0.01 per share (MBC) together control 93% of the company’s outstanding shares — a level of ownership often associated with strong institutional conviction and long‑term capital commitment.
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| BlackRock, Inc. | 15% | 19,352,651 | -0.05% | 0% | $160,820,530 |
| Coliseum Capital Management, LLC | 9.9% | 12,694,710 | +18% | 8.6% | $105,493,040 |
| Gates Capital Management, Inc. | 8.1% | 10,346,864 | +12% | 3% | $85,982,440 |
| DIMENSIONAL FUND ADVISORS LP | 5.5% | 7,010,428 | +6.8% | 0.01% | $58,255,654 |
| Boston Partners | 5.2% | 6,727,552 | -23% | 0.06% | $55,900,697 |
| VANGUARD CAPITAL MANAGEMENT LLC | 4.5% | 5,725,492 | 0% | 0% | $47,578,839 |
| Pertento Partners LLP | 3.9% | 4,964,821 | +28% | 4.4% | $41,257,663 |
| Sixth Street Partners Management Company, L.P. | 3.8% | 4,905,383 | 0% | 5.7% | $40,763,733 |
| STATE STREET CORP | 3.8% | 4,891,066 | -1.3% | 0% | $40,644,758 |
| FMR LLC | 3.4% | 4,340,250 | +17% | 0% | $36,067,482 |
| PZENA INVESTMENT MANAGEMENT LLC | 3% | 3,814,014 | +0.74% | 0.1% | $31,694,456 |
| ACK Asset Management LLC | 2.9% | 3,700,000 | +61% | 3.8% | $30,747,000 |
| COOKE & BIELER LP | 2.8% | 3,594,545 | +27% | 0.34% | $29,870,669 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 2.4% | 3,134,245 | +0.32% | 0.01% | $26,045,576 |
| GEODE CAPITAL MANAGEMENT, LLC | 2.4% | 3,098,501 | +2.9% | 0% | $25,753,604 |
| GOLDMAN SACHS GROUP INC | 2.4% | 3,062,879 | +17% | 0% | $25,452,526 |
| Apollo Management Holdings, L.P. | 2.1% | 2,638,219 | 0.37% | $21,923,600 | |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 2% | 2,542,961 | +1.2% | 0% | $21,132,006 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 1.9% | 2,457,785 | 0% | 0% | $20,424,193 |
| Monarch Alternative Capital LP | 1.6% | 2,000,000 | 2.8% | $16,620,000 | |
| RENAISSANCE TECHNOLOGIES LLC | 1.4% | 1,752,263 | -23% | 0.02% | $14,561,306 |
| CANYON CAPITAL ADVISORS LLC | 1.3% | 1,691,901 | -14% | 1.8% | $14,059,697 |
| Nixon Capital, LLC | 1.3% | 1,649,501 | +16% | 4.7% | $13,707,354 |
| Decagon Asset Management LLP | 1.2% | 1,546,997 | +103% | 3.3% | $12,855,545 |
| Diameter Capital Partners LP | 1.2% | 1,545,571 | -74% | 2.5% | $12,843,695 |
Institutional Holders of MasterBrand, Inc. - Common Stock, par value $0.01 per share (MBC) across Reporting Periods
| Period | Reported Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q1 | 154,895,514 | $1,287,558,549 | +$61,339,586 | $8.31 | 331 |
| 2025 Q4 | 146,852,389 | $1,621,827,739 | +$139,402,145 | $11.04 | 327 |
| 2025 Q3 | 133,500,441 | $1,758,268,751 | +$180,709,700 | $13.17 | 334 |
| 2025 Q2 | 119,921,612 | $1,310,917,077 | -$34,624,791 | $10.93 | 322 |
| 2025 Q1 | 121,463,349 | $1,585,925,370 | +$81,961,811 | $13.06 | 337 |
| 2024 Q4 | 114,912,666 | $1,680,883,255 | -$33,929,879 | $14.61 | 359 |
| 2024 Q3 | 115,261,072 | $2,136,525,666 | +$13,453,723 | $18.54 | 353 |
| 2024 Q2 | 114,874,059 | $1,686,402,022 | -$34,969,708 | $14.68 | 349 |
| 2024 Q1 | 117,013,592 | $2,192,704,319 | +$112,776,323 | $18.74 | 334 |
| 2023 Q4 | 110,862,614 | $1,646,299,359 | +$9,763,843 | $14.85 | 339 |
| 2023 Q3 | 110,714,373 | $1,345,121,257 | -$21,988,908 | $12.15 | 334 |
| 2023 Q2 | 112,074,576 | $1,303,211,897 | -$11,425,830 | $11.63 | 344 |
| 2023 Q1 | 115,012,696 | $924,418,595 | +$39,666,002 | $8.04 | 349 |
| 2022 Q4 | 109,739,271 | $828,497,074 | +$815,675,098 | $7.55 | 375 |