Tappin Matthew
Known title: President, Asset ManagementCIK: 0001986259
Associated companies
Transaction History
| STEM | ▼ Sell | Open Market | 996 | $8K | 7/2/2026 | View on chart |
| STEM | ▲ Buy | Option Exercise | 5,000 | $39K | 6/30/2026 | View on chart |
| STEM | ▲ Buy | Option Exercise | 2,750 | $21K | 6/30/2026 | View on chart |
| STEM | ▼ Sell | Open Market | 402 | $4K | 3/11/2026 | View on chart |
| STEM | ▼ Sell | Open Market | 655 | $7K | 3/10/2026 | View on chart |
| STEM | ▲ Buy | Option Exercise | 1,458 | — | 3/7/2026 | View on chart |
| STEM | ▼ Sell | Open Market | 185 | $2K | 3/4/2026 | View on chart |
| STEM | ▼ Sell | Open Market | 300 | $3K | 3/3/2026 | View on chart |
| STEM | ▲ Buy | Option Exercise | 670 | — | 3/1/2026 | View on chart |
| STEM | ▼ Sell | Open Market | 366 | $4K | 2/20/2026 | View on chart |
| STEM | ▼ Sell | Tax Withholding | 522 | $6K | 2/19/2026 | View on chart |
| STEM | ▲ Buy | Option Exercise | 1,253 | — | 2/15/2026 | View on chart |
| STEM | ▼ Sell | Open Market | 9,584 | $170K | 11/11/2025 | View on chart |
| STEM | ▼ Sell | Tax Withholding | 5,416 | $99K | 11/10/2025 | View on chart |
| STEM | ▲ Buy | Option Exercise | 15,000 | — | 11/7/2025 | View on chart |
| STEM | ▼ Sell | Open Market | 20,823 | $9K | 6/16/2025 | View on chart |
| STEM | ▼ Sell | Open Market | 1,164 | $525 | 5/30/2025 | View on chart |
| STEM | ▲ Buy | Option Exercise | 2,775 | $0 | 5/29/2025 | View on chart |
| STEM | ▼ Sell | Open Market | 13,070 | $5K | 3/12/2025 | View on chart |
| STEM | ▲ Buy | Option Exercise | 29,167 | $0 | 3/11/2025 | View on chart |
| STEM | ▼ Sell | Open Market | 5,645 | $2K | 3/7/2025 | View on chart |
| STEM | ▲ Buy | Option Exercise | 13,397 | $0 | 3/6/2025 | View on chart |
| STEM | ▼ Sell | Open Market | 8,130 | $5K | 2/20/2025 | View on chart |
| STEM | ▲ Buy | Option Exercise | 24,316 | $0 | 2/19/2025 | View on chart |
| STEM | ▼ Sell | Open Market | 1,388 | $2K | 5/28/2024 | View on chart |
| STEM | ▲ Buy | Option Exercise | 2,775 | $0 | 5/24/2024 | View on chart |
| STEM | ▼ Sell | Open Market | 26,640 | $48K | 3/19/2024 | View on chart |
| STEM | ▼ Sell | Open Market | 24,899 | $55K | 3/8/2024 | View on chart |
| STEM | ▼ Sell | Open Market | 3,837 | $9K | 3/5/2024 | View on chart |
| STEM | ▼ Sell | Open Market | 5,724 | $14K | 3/4/2024 | View on chart |
| STEM | ▲ Buy | Option Exercise | 13,398 | $0 | 3/1/2024 | View on chart |
| STEM | ▲ Buy | Grant | 51,539 | $0 | 3/1/2024 | View on chart |
| STEM | ▼ Sell | Open Market | 6,857 | $21K | 2/20/2024 | View on chart |
| STEM | ▼ Sell | Open Market | 10,602 | $34K | 2/16/2024 | View on chart |
| STEM | ▲ Buy | Option Exercise | 24,315 | $0 | 2/15/2024 | View on chart |
| STEM | ▼ Sell | Open Market | 4,556 | $14K | 2/14/2024 | View on chart |
| STEM | ▼ Sell | Open Market | 5,207 | $19K | 1/3/2024 | View on chart |
| STEM | ▲ Buy | Option Exercise | 14,318 | $0 | 12/31/2023 | View on chart |
AI Market Commentary
AI-generatedAll commentary →Synthesized from recent news and fundamentals/technical data -- not human analyst commentary or trader sentiment.
September 30, 2026
Stem Inc. Receives Analyst Upgrades Amid Industrial Pre‑Market Activity
A 3M analyst has shifted from a bearish view to a more positive stance on Stem Inc. UBS also upgraded the stock, keeping its price target at $7. These changes come as a broader group of industrial stocks moved in Friday’s pre‑market session, which could influence Stem’s trading activity.
Stem Inc. Receives Analyst Upgrades Amid Industrial Pre‑Market Activity. A 3M analyst has shifted from a bearish view to a more positive stance on Stem Inc. UBS also upgraded the stock, keeping its price target at $7. These changes come as a broader group of industrial stocks moved in Friday’s pre‑market session, which could influence Stem’s trading activity.