| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | STEM | Common Stock, Par Value $0.0001 Per Share | Purchase | $61,178 | +33,800 | +4.6% | $1.81 | 768,448 | 18 Mar 2024 | Direct | |
| holding | STEM | Common Stock, Par Value $0.0001 Per Share | 558,711 | 18 Mar 2024 | By the David S. Buzby Revocable Trust |