Coliseum Capital Management, LLC: MASTERBRAND INC (MBC): Quarterly 13F Position History
As of Q1 2026, Coliseum Capital Management, LLC reported 12,694,710 shares of MASTERBRAND INC (MBC), worth $105.5M and representing 8.6% of its 13F equity book. Quarter-over-quarter share count change: + 1,922,096 (+17.8%) . The position first appeared in Q1 2025 and has been disclosed across 5 13F-HR filings in Pactolio's tracked window.
- 12,694,710Shares Held (Latest Filing)
- $105.5MReported Market Value (Latest Filing)
- 8.6%Portfolio Weight (% of 13F Equity Book)
- +1,922,096Quarter-over-Quarter Share Change
- -$13.4MQuarter-over-Quarter Value Change
- 12,694,710Peak Reported Shares (Historical)
Quarterly 13F-HR Disclosure History Source: SEC 13F-HR filings, 5 quarter s
| Quarter | Shares | QoQ Share Change | Share Change (%) | Market Value | Weight | Implied Price |
|---|---|---|---|---|---|---|
| Q1 2026 | 12,694,710 | +1,922,096 | +17.8% | $105.5M | 8.6% | $8.3 |
| Q4 2025 | 10,772,614 | +3,209,323 | +42.4% | $118.9M | 9.7% | $11.0 |
| Q3 2025 | 7,563,291 | +3,259,210 | +75.7% | $99.6M | 9.7% | $13.2 |
| Q2 2025 | 4,304,081 | +1,125,162 | +35.4% | $47.0M | 3.4% | $10.9 |
| Q1 2025 | 3,178,919 | — | — | $41.5M | 3.5% | $13.1 |
Methodology & FAQ
How This Position History Is Sourced
Each row is one SEC Form 13F-HR filing disclosing this position. Share count, market value, and reported quarter are taken verbatim from the filing; portfolio weight is recomputed against the same filing's total reported equity book. Implied price-per-share is market value divided by shares — a quarter-end mark, not the manager's cost basis. See the full methodology document for the normalization rules.
When did Coliseum Capital Management, LLC first disclose a MBC position in 13F-HR filings?
Coliseum Capital Management, LLC first reported MASTERBRAND INC (MBC) on its 13F-HR filing for the period ending 2025-03-31 (Q1 2025). The position has appeared on 5 reported quarters within Pactolio's tracked window.
What was Coliseum Capital Management, LLC's most recent quarter-over-quarter share-count change in MBC?
Between Q4 2025 and Q1 2026, Coliseum Capital Management, LLC added 1,922,096 shares of MBC (+17.8%), bringing the total reported position to 12,694,710 shares at a market value of $105.5M.
Does the implied price-per-share represent Coliseum Capital Management, LLC's cost basis in MBC?
No. The implied price-per-share column is the 13F-HR reported market value divided by reported share count on the filing date (end of quarter). It is a quarter-end mark, not a cost basis or transaction price. Use it as a sanity check on the value column, not as an indicator of the manager's entry or exit price.