Mayo Stephen
Director · ALLO, SRPT, MRK
As of 2026-09-16, Mayo Stephen has 10 Form 4 transactions on record across 3 companies — 5 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 |
|---|---|---|---|---|---|---|---|
| 2026-03-12 | SRPT | Sale | 7,239 @ $17.02 | $123K | −80.4% of holding | 1,765 | Form 4 |
9 award / exercise / gift records — not counted as purchases
| Date | Company | Action | Shares | Owned after | Filing |
|---|---|---|---|---|---|
| 2026-06-18 | ALLO | Award / grant | 144,400 | 144,400 | Form 4 |
| 2026-06-04 | SRPT | Award / grant | 16,875 | 18,640 | Form 4 |
| 2026-06-04 | SRPT | Award / grant | 16,875 | 18,640 | Form 4 |
| 2026-05-29 | MRK | Award / grant | 1,853 | 14,825 | Form 4 |
| 2025-06-18 | ALLO | Award / grant | 95,400 | 95,400 | Form 4 |
| 2025-05-30 | MRK | Award / grant | 2,863 | 12,540 | Form 4 |
| 2025-03-10 | SRPT | Award / grant | 4,792 | 4,792 | Form 4 |
| 2025-03-10 | SRPT | Award / grant | 2,383 | 9,004 | Form 4 |
| 2025-03-10 | SRPT | Award / grant | 2,383 | 9,004 | 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.