Tjon Karin-Joyce
Director · STI, VLCN
As of 2026-09-16, Tjon Karin-Joyce has 13 Form 4 transactions on record across 2 companies — 8 in the trailing 12 months.
Everything this person has disclosed to the SEC on Form 4 — across every company they file for — reconstructed from the public record. A filing history, not a tip sheet.
Reconstructed holdings
Reconstructed from this person's own Form 4 filings — the total each filing reported owning afterward, priced at the close on the as-of date shown. A filed position can lag the real one.
Direct and indirect holdings (e.g. through a trust or fund) are tagged separately, as filed.
Trades by company
Filing ledger
| Date | Company | Action | Shares @ price | Value | Ownership Δ | Owned after | Filing |
|---|---|---|---|---|---|---|---|
| 2026-09-14 | STI | Purchase | 5,000 @ $7.20 | $36K | +9.4% of holding | 58,053 | Form 4 |
12 award / exercise / gift records — not counted as purchases
| Date | Company | Action | Shares | Owned after | Filing |
|---|---|---|---|---|---|
| 2026-09-04 | — | Disposition | 18,666 | 0 | Form 4 |
| 2026-09-04 | — | Disposition | 18,666 | 0 | Form 4 |
| 2026-09-04 | — | Disposition | 18,666 | 0 | Form 4 |
| 2026-09-04 | — | Disposition | 18,666 | 0 | Form 4 |
| 2026-09-01 | STI | Award / grant | 12,853 | 52,853 | Form 4 |
| 2026-09-01 | STI | Other acquisition | 200 | 53,053 | Form 4 |
| 2025-10-09 | STI | Award / grant | 40,000 | 40,000 | Form 4 |
| 2025-08-25 | — | Award / grant | 200,000 | 280,000 | Form 4 |
| 2025-07-21 | VLCN | Award / grant | 20,000 | 20,000 | Form 4 |
| 2025-07-17 | VLCN | Award / grant | 10,000 | 10,000 | Form 4 |
| 2025-07-17 | VLCN | Award / grant | 10,000 | 10,000 | Form 4 |
| 2024-12-16 | — | Award / grant | 80,000 | 80,000 | Form 4 |
Source: SEC Form 4 filings. Each row links to its original filing.
Research tool, not investment advice — historical frequencies, not recommendations. A product of Marovel Technologies LLC. Full terms.