Insiders / Tappin Matthew
Tappin Matthew
CIK 1986259personinsider
Companies
1
First seen
Feb 18, 2026
Last activity
Mar 13, 2026
Companies
| Company | Shares held | Latest |
|---|---|---|
| Stem, Inc. · STEM | 2,823 | — |
All securities held
3 positions · latest reported per filing
| Company | Security | Shares |
|---|---|---|
| Stem, Inc. | Common Stock, Par Value $0.0001 Per Share | 2,823 |
| Stem, Inc. | Performance Stock UnitDerivative | 17,200 |
| Stem, Inc. | Restricted Stock UnitDerivative | 1,459 |
Activity
InsidersInstitutions
This person's insider trades (Form 4), across every company.| Date | Action | Company | Value | Shares Δ | Position after | Impact |
|---|---|---|---|---|---|---|
| Mar 10, 2026 | Sell | STEM Stem, Inc. Common Stock, Par Value $0.0001 Per Share | $7.3K | -655 -16.88% | 3,225 0.03% of shares | low |
| Feb 19, 2026 | Other | STEM Stem, Inc. Common Stock, Par Value $0.0001 Per Share | $5.9K | -522 -16.70% | 2,603 0.03% of shares | low |
| Mar 11, 2026 | Sell | STEM Stem, Inc. Common Stock, Par Value $0.0001 Per Share | $4.4K | -402 -12.47% | 2,823 0.03% of shares | low |
| Feb 20, 2026 | Sell | STEM Stem, Inc. Common Stock, Par Value $0.0001 Per Share | $4.2K | -366 -14.06% | 2,237 0.02% of shares | low |
| Mar 3, 2026 | Sell | STEM Stem, Inc. Common Stock, Par Value $0.0001 Per Share | $2.9K | -300 -10.32% | 2,607 0.03% of shares | low |
| Mar 4, 2026 | Sell | STEM Stem, Inc. Common Stock, Par Value $0.0001 Per Share | $1.9K | -185 -7.10% | 2,422 0.03% of shares | low |
| Mar 7, 2026 | Exercise | STEM Stem, Inc. Restricted Stock Unit | — | -1K -49.98% | 1,459 0.02% of shares | low |
| Mar 7, 2026 | Exercise | STEM Stem, Inc. Common Stock, Par Value $0.0001 Per Share | — | +1K +60.20% | 3,880 0.04% of shares | low |
| Mar 1, 2026 | Exercise | STEM Stem, Inc. Restricted Stock Unit | — | -670 -100.00% | 0 0.00% of shares | low |
| Feb 26, 2026 | Grant | STEM Stem, Inc. Performance Stock Unit | — | +17K | 17,200 0.18% of shares | low |