Insiders / Marrazzo Jeffrey D
Marrazzo Jeffrey D
CIK 1631262personinsider
Companies
2
First seen
Jan 29, 2015
Last activity
Jun 8, 2026
Holdings
2 companies · 3 positionsView all →
| Company / security | Shares held | Latest |
|---|---|---|
| Spark Therapeutics, Inc. · ONCE | 380,000 | — |
| Common stock | 380,000 | Jan 29, 2015 |
| Options | 125,000 | Mar 16, 2015 |
| Prime Medicine, Inc. · PRME | — | — |
| Options | 75,000 | Jun 5, 2026 |
Ownership percentages elsewhere on the site count common and ordinary shares only, because that is what shares outstanding are measured in. Everything above is a real holding; not all of it is a share of the company.
Activity
InsidersInstitutions
This person's trades in company stock, across every company.| Date | Action | Company | Value | Shares Δ | Position after | Impact |
|---|---|---|---|---|---|---|
| Mar 16, 2015 | Grant Grant or award | ONCE Spark Therapeutics, Inc. Employee Stock Option (right to buy) | — | +125K | 125,000 | low |
| May 19, 2025 | Grant Grant or award | PRME Prime Medicine, Inc. Stock Option (right to buy) | — | +800K | 800,000 0.44% of shares | low |
| Jun 4, 2025 | Grant Grant or award | PRME Prime Medicine, Inc. Stock Option (right to buy) | — | +55K | 55,000 0.03% of shares | low |
| Aug 1, 2025 | Grant Grant or award | PRME Prime Medicine, Inc. Stock Option (right to buy) |