Duda Nathan
Officer · MCHB
As of 2026-09-17, Duda Nathan has 12 Form 4 transactions on record across 1 company — 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
- Direct $617K
- Indirect $0
| MCHB | direct | 39,993 sh | $617K |
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 |
|---|
12 award / exercise / gift records — not counted as purchases
| Date | Company | Action | Shares | Owned after | Filing |
|---|---|---|---|---|---|
| 2026-03-01 | MCHB | Award / grant | 7,626 | 39,993 | Form 4 |
| 2026-03-01 | MCHB | Award / grant | 7,626 | 39,993 | Form 4 |
| 2026-02-15 | MCHB | Withheld for tax | 1,801 | 32,367 | Form 4 |
| 2026-02-15 | MCHB | Option exercise | 2,571 | 10,546 | Form 4 |
| 2026-02-15 | MCHB | Option exercise | 2,571 | 34,168 | Form 4 |
| 2026-02-15 | MCHB | Option exercise | 2,571 | 34,168 | Form 4 |
| 2025-12-31 | MCHB | Withheld for tax | 4,903 | 31,597 | Form 4 |
| 2025-09-26 | MCHB | Award / grant | 21,818 | 36,500 | Form 4 |
| 2025-09-02 | MCHB | Award / grant | 104,920 | 106,433 | Form 4 |
| 2025-09-02 | MCHB | Award / grant | 13,117 | 13,117 | Form 4 |
| 2025-09-02 | MCHB | Award / grant | 14,682 | 14,682 | Form 4 |
| 2025-09-02 | MCHB | Award / grant | 14,682 | 14,682 | 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.