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 |
| 2024-03-31 | Grant / award | 150,000 | $0.00 | 359,000 |
| 2023-11-10 | Open-market buy | 100,000 | $0.25 | 209,000 |
| 2023-05-31 | Grant / award (derivative) | 79,500 | $0.00 | 79,500 |
| 2023-05-31 | Grant / award | 57,000 | $0.00 | 109,000 |
| 2022-06-23 | Grant / award (derivative) | 31,500 | $0.00 | 31,500 |
| 2022-06-23 | Grant / award | 20,500 | $0.00 | 52,000 |
| 2021-06-08 | Grant / award (derivative) | 17,500 | $0.00 | 17,500 |
| 2021-06-08 | Grant / award | 11,000 | $0.00 | 31,500 |
| 2020-06-16 | Grant / award (derivative) | 24,500 | $0.00 | 24,500 |
| 2020-06-16 | Grant / award | 8,000 | $0.00 | 20,500 |
| 2019-06-27 | Grant / award (derivative) | 13,000 | $0.00 | 13,000 |
| 2019-06-27 | Grant / award | 4,000 | $0.00 | 12,500 |
| 2018-06-14 | Grant / award (derivative) | 5,000 | $0.00 | 5,000 |
| 2018-06-14 | Grant / award | 1,500 | $0.00 | 8,500 |
| 2017-06-08 | Grant / award (derivative) | 21,500 | $0.00 | 21,500 |
| 2017-06-08 | Grant / award | 5,000 | $0.00 | 7,000 |
| 2017-01-03 | Grant / award (derivative) | 5,500 | $0.00 | 5,500 |
| 2017-01-03 | Grant / award | 2,000 | $0.00 | 2,000 |
| 2016-01-04 | Grant / award (derivative) | 10,500 | $0.00 | 10,500 |
| 2015-11-23 | Grant / award (derivative) | 15,500 | $0.00 | 15,500 |
Source: SEC EDGAR Form 4 filings. For informational purposes only — not investment advice.