Chang David D
Director · Officer · ALLO
As of 2026-09-27, Chang David D has 10 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.
Pattern in the record: open-market sales filed in March in multiple years since 2025 — a recurring calendar cadence, more consistent with scheduled activity than a one-off decision.
Reconstructed holdings
- Direct $8.5M
- Indirect $0
| ALLO | direct | 5,150,599 sh | $8.5M |
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 |
|---|---|---|---|---|---|---|---|
| 2026-03-16 | ALLO | Sale | 47,763 @ $2.47 | $118K | −0.9% of holding | 5,150,599 | Form 4 |
| 2026-02-02 | ALLO | Sale | 95,269 @ $1.80 | $171K | −1.8% of holding | 5,185,862 | Form 4 |
| 2025-03-14 | ALLO | Sale | 46,668 @ $1.96 | $91K | −0.9% of holding | 5,276,569 | Form 4 |
| 2025-02-03 | ALLO | Sale | 46,003 @ $1.68 | $77K | −0.9% of holding | 5,317,237 | Form 4 |
6 award / exercise / gift records — not counted as purchases
| Date | Company | Action | Shares | Owned after | Filing |
|---|---|---|---|---|---|
| 2026-02-02 | ALLO | Award / grant | 392,586 | 392,586 | Form 4 |
| 2026-02-02 | ALLO | Award / grant | 1,387,931 | 1,387,931 | Form 4 |
| 2025-01-24 | ALLO | Award / grant | 1,952,130 | 1,952,130 | Form 4 |
| 2025-01-24 | ALLO | Award / grant | 552,174 | 5,363,240 | Form 4 |
| 2024-05-16 | ALLO | Award / grant | 344,828 | 4,810,106 | Form 4 |
| 2024-03-14 | ALLO | Withheld for tax | 53,393 | 4,465,278 | 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.