Quick Takeaways
- Robert M. Buck has 2 issuer positions tracked on this page.
- Estimated disclosed ownership value: $41,006,743.
- Recent insider filing activity is available below.
- Info
- Insider Ownership
Insider Trading & Ownership of Robert M. Buck
- Location
- Daytona Beach, FL
- Summary
- The estimated net worth of Robert M. Buck is at least $41,006,743 dollars as of 18 Feb 2026. Robert M. Buck is the President and CEO, Director of TopBuild Corp and owns shares of TopBuild Corp (BLD) stock worth about $40.31M. Robert M. Buck is the Director of Core & Main, Inc. and owns shares of Core & Main, Inc. (CNM) stock worth about $694.7K.
- Signature
- /s/ Luis F. Machado, Attorney-in-Fact
- All Insider Reports
- All Insider Reports
Follow Filing Activity
Follow Robert M. Buck and return when a new Insider Trading filing changes the record on this page.
This uses the existing product follow flow to surface future filing-backed changes without guessing what they mean.
What Changed
- Largest disclosed position: TopBuild Corp ($40,312,092).
- Past-year value change for that position: -$7,408,647.
Why This Matters
- This page translates Forms 3/4/5 into a quick ownership context before you inspect each transaction row.
- You can cross-check role, issuer, and filing chronology directly against the SEC source.
Source Evidence
Filed on Form 4
See Original Filing
Insider ownership context is sourced from SEC Forms 3, 4, and 5.
Ownership of Robert M. Buck
| Symbol | Company | Relationship | Holdings Value | Past Year Net Change | Change % | Report Period |
|---|---|---|---|---|---|---|
| BLD | TopBuild Corp | President and CEO, Director | $40,312,092 | -$7,408,647 | -16% | 17 Feb 2026 |
| CNM | Core & Main, Inc. | Director | $694,651 | 24 Jun 2025 |
Insider Transactions Reported by Robert M. Buck:
| Sym | Company | Class | Transaction | % | Value $ | * Price $ | Shares | Shares After | Date | Ownership |
|---|
* An asterisk sign (*) next to the price indicates that the price is likely invalid.