7 Form 4 filings for ATRC between 2026-07-30 and 2026-08-26, from 7 filers. 7 discretionary (5 sales, 1 purchases). None state a filing-level total — that aggregate began on 2026-08-17 — so each row below shows only its largest transaction. Prices ran $20 to $49.
| Filed | Filer | Role | Action | Shares largest txn | Price | Filing total | Txns |
|---|---|---|---|---|---|---|---|
| 2026-08-26 | Dahlquist Karl S. | sold | 9,370 | $48.89 | — | — | |
| 2026-08-07 | Prange Karen | sold | 3,564 | $38.80 | — | — | |
| 2026-08-07 | Yuen Maggie | sold | 3,500 | $38.42 | — | — | |
| 2026-08-03 | CARREL MICHAEL H | gifted | 4,000 | — | — | 2 | |
| 2026-07-30 | Doraiswamy Vinayak | sold | 6,000 | $38.88 | — | — | |
| 2026-07-30 | WEHRWEIN SVEN | acquired | 25,000 | $19.95 | — | 2 | |
| 2026-07-30 | Noznesky Justin J | sold | 6,182 | $38.80 | — | — | |
| 7 filings · 7 filers · disclosed totals only | $0 (0/7) | — | |||||