Klaas de Boer
CIK 1845960 · last filed 2025-09-05
Klaas de Boer is a corporate insider who has filed 10 SEC Form 4 insider transactions across 1 company since 2024. The most recent filing, for SMTK, was dated Sep 5, 2025. Current disclosed insider exposure totals $4.0K 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.
$4.0K
1
10
$0
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| SMTK | Director | 11,530 | $0.35 | $4.0K | $0 | 4 | 2025-09-05 |
Recent Filings
10 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2025-09-05 | SMTK | Grant (A) | — | $0 | EDGAR |
| 2025-05-28 | SMTK | Grant (A) | — | $0 | EDGAR |
| 2024-06-17 | SMTK | Grant (A) | — | $0 | EDGAR |
| 2024-06-05 | SMTK | Conv (C) | +5,715 | $0 | EDGAR |
| 2024-02-02 | — | Grant (A) | +100 | $0 | |
| 2023-06-23 | — | Buy (P) | — | $0 | |
| 2022-07-12 | — | Grant (A) | — | $0 | |
| 2022-04-11 | — | Grant (A) | — | $0 | |
| 2021-04-02 | — | Grant (A) | — | $0 | |
| 2021-02-24 | — | Mixed | +3,785,252 | $400.0K |