Guo Jack Q.
Officer · CSTM
As of 2026-09-17, Guo Jack Q. has 4 Form 4 transactions on record across 1 company — 4 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
- Direct $4.9M
- Indirect $0
| CSTM | direct | 185,368 sh | $4.9M |
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 |
|---|---|---|---|---|---|---|---|
| 2026-05-05 | CSTM | Sale | 25,201 @ $32.62 | $822K | −12.0% of holding | 185,368 | Form 4 |
| 2026-03-10 | CSTM | Sale | 41,717 @ $25.87 | $1.1M | −17.9% of holding | 190,879 | Form 4 |
2 award / exercise / gift records — not counted as purchases
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.