Luke Nathaniel Walker
CIK 1701440 · Chief Medical Officer · last filed 2025-06-18
Luke Nathaniel Walker is a Chief Medical Officer who has filed 14 SEC Form 4 insider transactions across 4 companies since 2017. The most recent filing, for ZNTL, was dated Jun 18, 2025. Across all open-market trades the lifetime net is +$25.0K, making them a net buyer over the disclosed history. Current disclosed insider exposure totals $541.1K across reported positions.
"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.
$541.1K
4
14
$25.0K
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| ZNTL | Director | 144,284 | $3.75 | $541.1K | $25.0K | 3 | 2025-06-18 |
| CNTX | Director | — | $1.39 | — | $0 | 2 | 2025-06-12 |
| Harpoon Therapeutics, Inc. (HARP) Delisted | Chief Medical Officer | 0 | $23.01 | $0 | $0 | 5 | 2024-03-11 |
| Cascadian Therapeutics, Inc. (CASC) Delisted | SVP, Clinical Development | 5,303 | — | — | $0 | 3 | 2018-02-02 |
Recent Filings
14 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2025-06-18 | ZNTL | Grant (A) | +57,603 | $0 | EDGAR |
| 2025-06-12 | CNTX | Grant (A) | — | $0 | EDGAR |
| 2025-02-04 | ZNTL | Buy (P) | +14,200 | $25.0K | EDGAR |
| 2024-09-05 | CNTX | Grant (A) | — | $0 | EDGAR |
| 2024-05-29 | ZNTL | Grant (A) | +72,481 | $0 | EDGAR |
| 2024-03-11 | Harpoon Therapeutics, Inc. (HARP) Delisted | Disp (D) | −135,000 | $0 | EDGAR |
| 2024-01-09 | Harpoon Therapeutics, Inc. (HARP) Delisted | Grant (A) | +115,000 | $0 | EDGAR |
| 2023-11-28 | Harpoon Therapeutics, Inc. (HARP) Delisted | Grant (A) | +20,000 | $0 | EDGAR |
| 2023-01-26 | Harpoon Therapeutics, Inc. (HARP) Delisted | Grant (A) | — | $0 | EDGAR |
| 2022-10-04 | Harpoon Therapeutics, Inc. (HARP) Delisted | Grant (A) | — | $0 | EDGAR |