Builders FirstSource, Inc. (BLDR)
NYSE: BLDR · Retail-Lumber & Other Building Materials Dealers · Irving, TX · filing with the SEC since 2005
Grade4.4
◀ Past 4.3● Present 4.9▶ Future 3.6
Who owns Builders FirstSource, Inc.
As filed with the SECHolders of 5% or more
2
Blackrock, Inc. holds 12% of Common Stock, as its SCHEDULE 13G/A filed Oct 5, 2026 says.
Directors and officers
25
report now, of 41 people on the record since 2006. Their holdings as a group are not read here.
Institutions as a whole
n/a
The record does not read the share held by managers that file Form 13F, so none is printed and no split of the rest is estimated. What it holds is the 2 named at left.
Holders of 5% or moreshare of the class, as filed
Blackrock, Inc.
SCHEDULE 13G/A · filed Oct 5, 2026 · Common Stock · 7.5% in Apr 17, 2025
Vanguard Capital Management
SCHEDULE 13G · filed Apr 29, 2026 · Common Stock
Fmr LLC
SCHEDULE 13G/A · filed Dec 5, 2025 · COMMON STOCK · reported falling below 5%, from 10.3% in Feb 7, 2025
The Vanguard Group
SCHEDULE 13G/A · filed Mar 26, 2026 · Common Stock · reported falling below 5%
What BLDR reports owning in othersstakes of 5% or more, and other ties
27 subsidiaries in 3 countries, from the list filed with the 10-K filed Feb 17, 2026.
Insider tradesForm 4
1sales
1purchases
0sales on a scheduled plan
1people selling
$400,000sold, in dollars
$4.4Mbought, in dollars
Open-market trades on Form 4 from Oct 20, 2025 to Oct 20, 2026. A scheduled plan is a selling program set in advance under SEC rule 10b5-1. The trades are listed as filed and do not feed the grade.
By calendar yearSoldBought
2026 runs to Oct 20, 2026. Dollars as filed, summed by the transaction date.
People who traded in the window2 of 54 on the roster
| Person | Role as filed | Sales | Sold | On a plan | Buys | Bought |
|---|---|---|---|---|---|---|
| Rush David E | President & CEO | 1 | $400,000 | 0 | 0 | $0 |
| Levy Paul S | director | 0 | $0 | 0 | 1 | $4.4M |