Insider Trading for MAS
View recent insider trading activity including purchases, sales, and awards. Insider trading can provide insights into how executives view their company's prospects.
Insider Trading Summary
Shares Acquired1.8M
Past 100 transactions
Shares Disposed2.9M
Past 100 transactions
Net Position-1.1M
Overall insider sentiment: bearish
Recent Activity (30 Days)
Acquisitions: 82.9K shares
Dispositions: 168.3K shares
Net: -85.3K shares
Insiders have been net sellers recently, which could indicate concerns about current valuation or short-term outlook.
Quarterly Activity (3 Months)
Acquisitions: 154.3K shares
Dispositions: 168.3K shares
Net: -13.9K shares
Insiders have been net sellers over the quarter, which institutional investors may view as a cautionary signal.
Key Insider Activity: Mar 5, 2024 to Aug 22, 2025
Allman Keith J.
ExecutiveChief Executive Officer
-1.2M shares
24 transactions
Shah Jai
ExecutivePresident
-39.8K shares
11 transactions
Nudi Jonathon
ExecutiveChief Executive Officer
+74.4K shares
4 transactions
Cole Kenneth G.
ExecutiveVice President
-17.2K shares
9 transactions
Westenberg Richard J.
ExecutiveChief Financial Officer
+26.2K shares
3 transactions
Transaction Details
Show All| Date | Insider | Role | Transaction | Shares | Price | Value | Owned After | SEC Filing |
|---|---|---|---|---|---|---|---|---|
| Aug 22, 2025 | Shah Jai | EPresident | Exercise | 15.7K | $33.75 | $530,550.00 | 122.5K | View |
| Aug 22, 2025 | Shah Jai | EPresident | Exercise | 22.5K | $42.13 | $947,503.70 | 106.8K | View |
| Aug 22, 2025 | Shah Jai | EPresident | Exercise | 44.7K | $35.52 | $1,587,744.00 | 84.3K | View |
| Aug 22, 2025 | Shah Jai | EPresident | Sale | 82.9K | $76.04 | $6,304,327.16 | 39.6K | View |
| Aug 22, 2025 | Shah Jai | EPresident | Exercise | 44.7K | $35.52 | $1,587,744.00 | 0 | View |
| Aug 22, 2025 | Shah Jai | EPresident | Exercise | 22.5K | $42.13 | $947,503.70 | 0 | View |
| Aug 22, 2025 | Shah Jai | EPresident | Exercise | 15.7K | $33.75 | $530,550.00 | 0 | View |
| Aug 19, 2025 | Eisman Heath M | EVice President | Sale | 2.4K | $74.62 | $181,401.22 | 12.0K | View |
| Jul 7, 2025 | Nudi Jonathon | EChief Executive Officer | Award/Grant | 54.3K | $65.30 | $3,543,178.00 | 54.3K | View |
| Jul 7, 2025 | Nudi Jonathon | EChief Executive Officer | Award/Grant | 17.1K | $0.00 | $0.00 | 22.8K | View |
Click "View" in the SEC Filing column to access the detailed SEC form submission for each transaction.
Executive Activity:
Executives have been net sellers of MAS stock, though this may be part of planned diversification.