The public view is the crawlable proof. The same sourced dataset is available through REST and MCP for agents, research scripts, and back-office tools.
| Date | Insider | Role | Action | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Mar 21, 2026 | Gosa James J | President, Building Envelope | Tax withholding(F) | 15K | $52.56 | $764K |
| Mar 13, 2026 | Brouwer Roald | Chief Technology Officer | Buy(P) | 2K | $54.88 | $110K |
| Mar 13, 2026 | Gross Mario | Chief Supply Chain Officer | Buy(P) | 2K | $55.39 | $111K |
| Mar 13, 2026 | Gross Mario | Chief Supply Chain Officer | Buy(P) | 1K | $55.13 | $66K |
| Mar 12, 2026 | Hill Jaime | President, Building Materials | Buy(P) | 1K | $56.90 | $57K |
| Mar 11, 2026 | Brouwer Roald | Chief Technology Officer | Buy(P) | 3K | $58.72 | $176K |
| Mar 11, 2026 | Hill Jaime | President, Building Materials | Buy(P) | 1K | $58.91 | $59K |
| Mar 10, 2026 | Johnston Ian A | Chief Financial Officer | Buy(P) | 4K | $58.94 | $250K |
| Mar 9, 2026 | Hill Jaime | President, Building Materials | Buy(P) | 3K | $56.34 | $179K |
| Mar 6, 2026 | Jenisch Jan Philipp | Chairman & CEO, Director | Buy(P) | 60K | $58.05 | $3.5M |
| Feb 27, 2026 | Johnston Ian A | Chief Financial Officer | Grant(A) | 4K | — | $0 |
| Feb 27, 2026 | Johnston Ian A | Chief Financial Officer | Tax withholding(F) | 2K | $64.99 | $126K |
| Feb 27, 2026 | Hill Jaime | President, Building Materials | Tax withholding(F) | 2K | $64.99 | $125K |
| Feb 27, 2026 | Hill Jaime | President, Building Materials | Grant(A) | 6K | — | $0 |
| Feb 27, 2026 | Gross Mario | Chief Supply Chain Officer | Grant(A) | 4K | — | $0 |
| Feb 27, 2026 | Forrest Nollaig | Chief Mktg & Corp Affairs Off | Tax withholding(F) | 5K | $64.99 | $304K |
| Feb 27, 2026 | Forrest Nollaig | Chief Mktg & Corp Affairs Off | Grant(A) | 11K | — | $0 |
| Feb 27, 2026 | Brouwer Roald | Chief Technology Officer | Grant(A) | 4K | — | $0 |
| Feb 27, 2026 | Poletti Samuel Jonas | Chief Strategy & M&A Officer | Grant(A) | 4K | — | $0 |
| Feb 27, 2026 | Jenisch Jan Philipp | Chairman & CEO, Director | Grant(A) | 139K | — | $0 |
| Feb 27, 2026 | Jenisch Jan Philipp | Chairman & CEO, Director | Grant(A) | 621K | — | $0 |
| Feb 19, 2026 | Johnston Ian A | Chief Financial Officer | Buy(P) | 995 | $63.92 | $64K |
| Feb 19, 2026 | Johnston Ian A | Chief Financial Officer | Buy(P) | 205 | $63.91 | $13K |
| Nov 19, 2025 | Gangestad Nicholas C | Director | Buy(P) | 2K | $47.34 | $95K |
| Nov 4, 2025 | Hill Jaime | President, Building Materials | Buy(P) | 4K | $50.69 | $203K |
| Oct 31, 2025 | Brouwer Roald | Chief Technology Officer | Buy(P) | 1K | $51.76 | $52K |
| Oct 31, 2025 | Brouwer Roald | Chief Technology Officer | Buy(P) | 3K | $51.78 | $155K |
| Oct 30, 2025 | Jenisch Jan Philipp | Chairman & CEO, Director | Buy(P) | 55K | $52.64 | $2.9M |
| Oct 30, 2025 | Jenisch Jan Philipp | Chairman & CEO, Director | Buy(P) | 55K | $52.88 | $2.9M |
| Aug 27, 2025 | Brouwer Roald | Chief Technology Officer | Buy(P) | 2K | $51.88 | $104K |
| Aug 22, 2025 | Hill Jaime | President, Building Materials | Buy(P) | 500 | $49.59 | $25K |
| Aug 15, 2025 | Clark Stephen S | Chief People Officer | Buy(P) | 22 | $51.78 | $1K |
| Aug 15, 2025 | Clark Stephen S | Chief People Officer | Buy(P) | 400 | $51.86 | $21K |
| Aug 15, 2025 | Clark Stephen S | Chief People Officer | Buy(P) | 1K | $51.85 | $57K |
| Aug 15, 2025 | Clark Stephen S | Chief People Officer | Buy(P) | 100 | $51.63 | $5K |
| Aug 15, 2025 | Clark Stephen S | Chief People Officer | Buy(P) | 70 | $51.63 | $4K |
| Aug 15, 2025 | Clark Stephen S | Chief People Officer | Buy(P) | 500 | $51.84 | $26K |
| Aug 15, 2025 | Clark Stephen S | Chief People Officer | Buy(P) | 100 | $51.79 | $5K |
| Aug 15, 2025 | Clark Stephen S | Chief People Officer | Buy(P) | 367 | $51.80 | $19K |
| Aug 15, 2025 | Clark Stephen S | Chief People Officer | Buy(P) | 301 | $51.81 | $16K |
| Aug 15, 2025 | Clark Stephen S | Chief People Officer | Buy(P) | 1K | $51.82 | $52K |
| Aug 15, 2025 | Clark Stephen S | Chief People Officer | Buy(P) | 1K | $51.83 | $54K |
| Aug 15, 2025 | Hill Jaime | President, Building Materials | Buy(P) | 4K | $52.00 | $208K |
| Aug 13, 2025 | Gross Mario | Chief Supply Chain Officer | Buy(P) | 3K | $49.63 | $149K |
| Aug 12, 2025 | Brouwer Roald | Chief Technology Officer | Buy(P) | 1K | $46.84 | $47K |
| Aug 11, 2025 | Brouwer Roald | Chief Technology Officer | Buy(P) | 218 | $48.07 | $10K |
| Aug 11, 2025 | Brouwer Roald | Chief Technology Officer | Buy(P) | 782 | $48.08 | $38K |
| Aug 11, 2025 | Gross Mario | Chief Supply Chain Officer | Buy(P) | 3K | $47.75 | $124K |
| Aug 11, 2025 | Gosa James J | President, Building Envelope | Grant(A) | 19K | — | $0 |
| Aug 11, 2025 | Gosa James J | President, Building Envelope | Grant(A) | 37K | — | $0 |
| Aug 11, 2025 | Jenisch Jan Philipp | Chairman & CEO, Director | Buy(P) | 340K | $47.99 | $16.3M |
| Aug 11, 2025 | Jenisch Jan Philipp | Chairman & CEO, Director | Buy(P) | 21K | $47.60 | $1.0M |
| Aug 11, 2025 | Jenisch Jan Philipp | Chairman & CEO, Director | Buy(P) | 4K | $47.59 | $177K |
| Aug 11, 2025 | Jenisch Jan Philipp | Chairman & CEO, Director | Buy(P) | 50K | $47.50 | $2.4M |
| Aug 11, 2025 | Jenisch Jan Philipp | Chairman & CEO, Director | Buy(P) | 180K | $47.96 | $8.6M |
| Aug 11, 2025 | Drew Theresa J | Director | Grant(A) | 3K | — | $0 |
| Aug 11, 2025 | Gangestad Nicholas C | Director | Grant(A) | 3K | — | $0 |
| Aug 11, 2025 | Gibson Dwight Audley Konrad | Director | Grant(A) | 3K | — | $0 |
| Aug 11, 2025 | Ladhani Holli C. | Director | Grant(A) | 3K | — | $0 |
| Aug 11, 2025 | McKelvy Michael E | Director | Grant(A) | 3K | — | $0 |
| Aug 11, 2025 | Oleas Jurg Amadeo | Director | Grant(A) | 3K | — | $0 |
| Aug 11, 2025 | Roth Pellanda Katja Nicole | Director | Grant(A) | 3K | — | $0 |
| Aug 11, 2025 | Rivkin Robert S. | Director | Grant(A) | 3K | — | $0 |
| Aug 11, 2025 | Wilbur Maria Cristina Alapag | Director | Grant(A) | 3K | — | $0 |
| Aug 8, 2025 | Johnston Ian A | Chief Financial Officer | Buy(P) | 100 | $47.72 | $5K |
| Aug 8, 2025 | Johnston Ian A | Chief Financial Officer | Buy(P) | 100 | $47.75 | $5K |
| Aug 8, 2025 | Johnston Ian A | Chief Financial Officer | Buy(P) | 44 | $47.66 | $2K |
| Aug 8, 2025 | Johnston Ian A | Chief Financial Officer | Buy(P) | 5K | $47.73 | $256K |
| Aug 8, 2025 | Johnston Ian A | Chief Financial Officer | Buy(P) | 1K | $47.68 | $70K |
| Aug 8, 2025 | Johnston Ian A | Chief Financial Officer | Buy(P) | 1K | $47.67 | $50K |
| Aug 8, 2025 | Johnston Ian A | Chief Financial Officer | Buy(P) | 750 | $47.71 | $36K |
| Aug 8, 2025 | Johnston Ian A | Chief Financial Officer | Buy(P) | 575 | $47.69 | $27K |
| Aug 8, 2025 | Johnston Ian A | Chief Financial Officer | Buy(P) | 111 | $47.73 | $5K |
| Aug 8, 2025 | Johnston Ian A | Chief Financial Officer | Buy(P) | 300 | $47.72 | $14K |
| Aug 8, 2025 | Johnston Ian A | Chief Financial Officer | Buy(P) | 150 | $47.70 | $7K |
| Aug 8, 2025 | Johnston Ian A | Chief Financial Officer | Buy(P) | 500 | $47.74 | $24K |
| Aug 8, 2025 | Singleton Denise R | Chief Legal Officer & Corp Sec | Buy(P) | 4K | $47.64 | $191K |
| Aug 8, 2025 | Brouwer Roald | Chief Technology Officer | Buy(P) | 1K | $46.25 | $46K |
| Aug 8, 2025 | Gross Mario | Chief Supply Chain Officer | Buy(P) | 5K | $46.78 | $234K |
| Aug 8, 2025 | Poletti Samuel Jonas | Chief Strategy & M&A Officer | Buy(P) | 1K | $46.22 | $59K |
| Aug 8, 2025 | Jenisch Jan Philipp | Chairman & CEO, Director | Buy(P) | 90K | $46.25 | $4.2M |
| Aug 8, 2025 | Jenisch Jan Philipp | Chairman & CEO, Director | Buy(P) | 10K | $46.25 | $463K |
| Aug 8, 2025 | Jenisch Jan Philipp | Chairman & CEO, Director | Buy(P) | 268 | $46.33 | $12K |
| Aug 8, 2025 | Jenisch Jan Philipp | Chairman & CEO, Director | Buy(P) | 186 | $46.36 | $9K |
| Aug 8, 2025 | Jenisch Jan Philipp | Chairman & CEO, Director | Buy(P) | 40K | $47.40 | $1.9M |
| Aug 8, 2025 | Jenisch Jan Philipp | Chairman & CEO, Director | Buy(P) | 100K | $46.43 | $4.6M |
| Aug 8, 2025 | Jenisch Jan Philipp | Chairman & CEO, Director | Buy(P) | 60K | $47.54 | $2.9M |
| Aug 8, 2025 | Jenisch Jan Philipp | Chairman & CEO, Director | Buy(P) | 100K | $46.25 | $4.6M |
| Aug 8, 2025 | Jenisch Jan Philipp | Chairman & CEO, Director | Buy(P) | 100K | $46.38 | $4.6M |
| Aug 8, 2025 | Hill Jaime | President, Building Materials | Buy(P) | 4K | $46.40 | $186K |
| Jun 23, 2025 | Holcim LTD. | 10% Owner | Other(J) | 566.9M | — | $0 |
| Jun 23, 2025 | Jenisch Jan Philipp | Chairman & CEO, Director | Other(J) | 805K | — | $0 |
| Jun 23, 2025 | Oleas Jurg Amadeo | Director | Other(J) | 18K | — | $0 |
| Jun 23, 2025 | Wilbur Maria Cristina Alapag | Director | Other(J) | 190 | — | $0 |
| Jun 23, 2025 | Forrest Nollaig | Chief Mktg & Corp Affairs Off | Other(J) | 11K | — | $0 |
| Jun 23, 2025 | Gross Mario | Chief Supply Chain Officer | Other(J) | 13K | — | $0 |
| Jun 23, 2025 | Hill Jaime | President, Building Materials | Other(J) | 6K | — | $0 |
| Jun 23, 2025 | Johnston Ian A | Chief Financial Officer | Other(J) | 7K | — | $0 |
| Jun 23, 2025 | Poletti Samuel Jonas | Chief Strategy & M&A Officer | Other(J) | 2K | — | $0 |
Insider transactions sourced from SEC EDGAR Form 4 filings, normalized within minutes of acceptance. "Buy"/"Sell" mark open-market transactions (codes P/S), the tradeable signal. Awards, option exercises and tax-withholding are shown with their raw code. All data is public domain.
Programmatic access via the Arkolith API & MCP server (insider.transactions, insider.company).