BLDR insider buying
1 cluster buyBuilders FirstSource, Inc. · Industrials
When two or more insiders at Builders FirstSource, Inc. buy BLDR on the open market around the same time, that clustered conviction is one of the highest-signal patterns in SEC filing data. Below is every cluster we've detected in BLDR plus the full record of qualifying open-market buys, each parsed directly from Form 4 filings and linked back to the source on SEC EDGAR.
Detected clusters
- May 8 – Jun 10, 2025Detected Jun 10, 2025High conviction3 insidersTotal bought$56.3MMarket cap$8.9B
All notable open-market buys in BLDR
Every open-market Form 4 purchase, newest first. Click an insider to see their full buying record across companies.
| Date | Insider | Shares | Price | Value | Filing |
|---|---|---|---|---|---|
| Mar 13, 2026 | Director | 50,000 | $87.73 | $4.4M | SEC ↗ |
| Jun 10, 2025 | Vance Toddcluster President - East Division | 1,948 | $115.50 | $225.0K | SEC ↗ |
| May 27, 2025 | Charles Dirkson Rcluster Director | 5,000 | $109.67 | $548.4K | SEC ↗ |
| May 9, 2025 | LEVY PAUL Scluster Director | 283,517 | $111.21 | $31.5M | SEC ↗ |
| May 8, 2025 | LEVY PAUL Scluster Director | 216,483 | $110.65 | $24.0M | SEC ↗ |
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BLDR insider buying — FAQ
- Are insiders buying BLDR stock?
- Yes — 3 distinct insiders have bought BLDR (Builders FirstSource, Inc.) on the open market, including 1 cluster buy where two or more insiders bought within a rolling window. The most recent qualifying activity was Mar 16, 2026.
- How much BLDR stock have insiders bought?
- Insiders have bought a combined $60.6M of BLDR across 5 open-market purchases, based on SEC Form 4 filings.
- What is an insider cluster buy in BLDR?
- A cluster buy is two or more distinct Builders FirstSource, Inc. insiders — officers, directors, or 10% owners — each buying BLDR on the open market within a rolling window. BLDR has 1 detected cluster buy to date.
- Where does this BLDR insider trading data come from?
- Every figure is parsed directly from SEC Form 4 filings on EDGAR, and each purchase on this page links back to its original filing document.
How we track insider buying in BLDR
We continuously poll SEC EDGAR for new Form 4 filings and parse every open-market purchase (transaction code P). A cluster is recorded when two or more distinct insiders — officers, directors, or 10% owners — each buy BLDR within a rolling window. We track clusters at every company size, from micro-caps to mega-caps. Every figure on this page traces back to an official filing; open any row to jump straight to the source document. What counts as a cluster buy?
This page is informational and reflects public filing data. It is not investment advice or a recommendation regarding BLDR.