Stephen Mayo
CIK: 0001849061
Transaction Breakdown
High conviction signal
Position reduction
Derivative conversions
Compensation grants
Gifts, tax withholding, conversions, dispositions to the issuer and other codes
Discretionary Trading P&L
Holdings
Transaction History (7 total)
- Jun 18, 2026ALLO
Allogene Therapeutics, Inc.
Award(A)DirectStock Option (Right to buy)
144.4K shares- - Jun 4, 2026SRPT
Sarepta Therapeutics, Inc.
Award(A)Direct16.9K shares- - May 29, 2026MRK
Merck & Co., Inc.
Award(A)DirectPhantom Stock
1.9K shares at avg. $118.72- - Mar 12, 2026SRPT
Sarepta Therapeutics, Inc.
Sale(S)Direct7.2K shares at avg. $17.02$123K - Jun 18, 2025ALLO
Allogene Therapeutics, Inc.
Award(A)DirectRestricted Stock Unit
95.4K shares- - May 30, 2025MRK
Merck & Co., Inc.
Award(A)DirectPhantom Stock
2.9K shares at avg. $76.84- - Mar 10, 2025SRPT
Sarepta Therapeutics, Inc.
Award(A)Direct2.4K shares-
| Type | Shares | Price | Ownership | |||
|---|---|---|---|---|---|---|
| Jun 18, 2026 |  ALLO Allogene Therapeutics, Inc. | Award(A) Stock Option (Right to buy) | 144,400 | - | - | Direct |
| Jun 4, 2026 |  SRPT Sarepta Therapeutics, Inc. | Award(A) | 16,875 | - | $0 | Direct |
| May 29, 2026 |  MRK Merck & Co., Inc. | Award(A) Phantom Stock | 1,853 | $118.72 | - | Direct |
| Mar 12, 2026 | SRPT Sarepta Therapeutics, Inc. | Sale(S) | 7,239 | $17.02 | $123,208 | Direct |
| Jun 18, 2025 | ALLO Allogene Therapeutics, Inc. | Award(A) Restricted Stock Unit | 95,400 | - | - | Direct |
| May 30, 2025 | MRK Merck & Co., Inc. | Award(A) Phantom Stock | 2,863 | $76.84 | - | Direct |
| Mar 10, 2025 | SRPT Sarepta Therapeutics, Inc. | Award(A) | 2,383 | - | - | Direct |
1-7 of 7 transactions
About Mayo Stephen
Mayo Stephen (SEC CIK 0001849061) files insider reports with the SEC as Director of Allogene Therapeutics, Inc. (ALLO), Director of Sarepta Therapeutics, Inc. (SRPT) and Director of Merck & Co., Inc. (MRK).
Signal8 holds 7 ownership filings by Mayo Stephen, all Form 4s, filed between Mar 11, 2025 and Jun 23, 2026. Those filings report 7 transactions, from Mar 10, 2025 to Jun 18, 2026. Signal8's Form 4 history starts in Sep 2024.
The business address on Mayo Stephen's filings is in RAHWAY, NJ.
Recent filings by Mayo Stephen
- Jun 18, 2026: Grant or award of ALLO derivative securities (Form 4, code A).
- Jun 4, 2026: Grant or award of SRPT shares (Form 4, code A).
- May 29, 2026: Grant or award of MRK derivative securities (Form 4, code A).
- Mar 12, 2026: Open-market sale of SRPT shares (Form 4, code S).
- Jun 18, 2025: Grant or award of ALLO derivative securities (Form 4, code A).
Other insiders filing for Allogene Therapeutics, Inc. (ALLO)
- Parker Geoffrey M., CHIEF FINANCIAL OFFICER
- Douglas Earl Martin, SVP, General Counsel
- Roberts Zachary, President and CEO
- Kazam Joshua A, Director
- MESSEMER DEBORAH M., Director
- SATO VICKI L, Director