TZIANABOS ARTHUR
Director · Officer · QTTB, STOK
As of 2026-09-16, TZIANABOS ARTHUR has 11 Form 4 transactions on record across 2 companies — 6 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 |
|---|---|---|---|---|---|---|---|
| 2026-03-10 | STOK | Sale | 4,355 @ $40.00 | $174K | −12.2% of holding | 31,339 | Form 4 |
10 award / exercise / gift records — not counted as purchases
| Date | Company | Action | Shares | Owned after | Filing |
|---|---|---|---|---|---|
| 2026-06-12 | QTTB | Award / grant | 9,810 | 9,810 | Form 4 |
| 2026-06-03 | STOK | Award / grant | 17,786 | 17,786 | Form 4 |
| 2026-03-10 | STOK | Option exercise | 3,955 | 35,694 | Form 4 |
| 2026-03-10 | STOK | Option exercise | 3,955 | 118,696 | Form 4 |
| 2025-10-23 | QTTB | Award / grant | 53,521 | 53,521 | Form 4 |
| 2025-03-20 | STOK | Award / grant | 122,651 | 122,651 | Form 4 |
| 2025-02-24 | QTTB | Disposition | 25,674 | 0 | Form 4 |
| 2025-02-24 | QTTB | Award / grant | 12,767 | 12,767 | Form 4 |
| 2025-02-24 | QTTB | Disposition | 12,767 | 0 | Form 4 |
| 2025-02-24 | QTTB | Award / grant | 25,674 | 25,674 | 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.