Insider Trading for STEM
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 Acquired
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Shares Disposed
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Net Position
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Recent Activity (30 Days)
Acquisitions: 34.8K shares
Dispositions: 40.8K shares
Net: -6.0K shares
Insiders have been net sellers recently, which could indicate concerns about current valuation or short-term outlook.
Quarterly Activity (3 Months)
Acquisitions: 119.9K shares
Dispositions: 40.8K shares
Net: 79.2K shares
Insiders have been net buyers over the quarter, suggesting potential confidence in medium-term business fundamentals.
Key Insider Activity: Jan 27, 2025 to Jul 20, 2026
Tappin Matthew
ExecutivePresident
+44.6K shares
25 transactions
Carlson Michael James
ExecutivePresident
+52.1K shares
18 transactions
Shukla Rahul
ExecutiveCorporate Officer
-5.8K shares
4 transactions
Musfeldt Brian
ExecutiveCorporate Officer
+74.5K shares
12 transactions
Cabot Jeffrey T
ExecutiveCorporate Officer
+14.0K shares
4 transactions
Transaction Details
| Date | Insider | Role | Transaction | Shares | Price | Value | Owned After | SEC Filing |
|---|---|---|---|---|---|---|---|---|
| Jul 20, 2026 | Musfeldt Brian | ECorporate Officer | Sale | 996 | $6.11 | $6,085.56 | 2.4K | View |
| Jul 17, 2026 | Musfeldt Brian | ECorporate Officer | Exercise | 3.4K | $6.26 | $21,127.50 | 3.4K | View |
| Jul 17, 2026 | Musfeldt Brian | ECorporate Officer | Exercise | 3.4K | $0.00 | $0.00 | 3.4K | View |
Jul 2, 2026 | Locked | — | — | — | — | — | — | — |
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Jun 30, 2026 | Locked | — | — | — | — | — | — | — |
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Mar 11, 2026 | Locked | — | — | — | — | — | — | — |
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Mar 4, 2026 | Locked | — | — | — | — | — | — | — |
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Mar 1, 2026 | Locked | — | — | — | — | — | — | — |
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Feb 26, 2026 | Locked | — | — | — | — | — | — | — |
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Feb 20, 2026 | Locked | — | — | — | — | — | — | — |
Feb 19, 2026 | Locked | — | — | — | — | — | — | — |
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Feb 15, 2026 | Locked | — | — | — | — | — | — | — |
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Jan 5, 2026 | Locked | — | — | — | — | — | — | — |
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Nov 18, 2025 | Locked | — | — | — | — | — | — | — |
Nov 11, 2025 | Locked | — | — | — | — | — | — | — |
Nov 10, 2025 | Locked | — | — | — | — | — | — | — |
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Nov 7, 2025 | Locked | — | — | — | — | — | — | — |
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Jul 28, 2025 | Locked | — | — | — | — | — | — | — |
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Jul 17, 2025 | Locked | — | — | — | — | — | — | — |
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Jul 17, 2025 | Locked | — | — | — | — | — | — | — |
Jul 17, 2025 | Locked | — | — | — | — | — | — | — |
Jan 27, 2025 | Locked | — | — | — | — | — | — | — |
Click "View" in the SEC Filing column to access the detailed SEC form submission for each transaction.
Executive Activity:
Executives have been net buyers of STEM stock, which is typically a strong positive signal.