10 Form 4 filings for CSTL between 2026-07-16 and 2026-08-26, from 4 filers. 10 discretionary (8 sales, 2 purchases). 5 of 10 state a filing-level total, summing to $1,962,389; the rest report only their largest transaction, so the true figure is higher. Prices ran $2 to $38.
| Filed | Filer | Role | Action | Shares largest txn | Price | Filing total | Txns |
|---|---|---|---|---|---|---|---|
| 2026-08-26 | Oelschlager Kristen M | sold | 12,218 | $33.69 | $837,865 | 3 | |
| 2026-08-19 | Juvenal Tobin W | sold | 1,730 | $29.59 | — | — | |
| 2026-08-18 | Stokes Frank | sold | 24,908 | $29.77 | — | — | |
| 2026-08-18 | MAETZOLD DEREK J | sold | 2,714 | $30.02 | $217,105 | 8 | |
| 2026-08-06 | Juvenal Tobin W | sold | 1,301 | $38.39 | — | — | |
| 2026-08-06 | MAETZOLD DEREK J | acquired | 20,356 | $2.39 | — | 11 | |
| 2026-08-05 | Oelschlager Kristen M | sold | 4,486 | $30.00 | $255,622 | 3 | |
| 2026-08-04 | Juvenal Tobin W | sold | 8,149 | $28.84 | $556,175 | 4 | |
| 2026-08-04 | MAETZOLD DEREK J | acquired | 10,664 | $2.39 | — | 8 | |
| 2026-07-16 | MAETZOLD DEREK J | sold | 1,357 | $22.92 | $95,622 | 8 | |
| 10 filings · 4 filers · disclosed totals only | $1,962,389 (5/10) | — | |||||