SEC CIK 1214939
HEIDEN WILLIAM K
Reported ownership across 2 companies, sourced from SEC Form 4 filings and updated daily.
Current Positions
| Company | Shares Owned | As Of |
|---|---|---|
| MGNXview stock → | 114,750 | 2026-05-18 |
| ATRAview stock → | 34,188 | 2026-06-09 |
Position History — ATRA
Reported shares owned immediately after each Form 4 transaction, over time.
Recent Filings — ATRA
| Date | Activity | Shares | Price | Owned After |
|---|---|---|---|---|
| 2026-06-09 | Grant / award | 12,000 | $0.00 | 34,188 |
| 2025-06-10 | Grant / award | 7,828 | $0.00 | 22,188 |
Source: SEC EDGAR Form 4 filings. For informational purposes only — not investment advice.