Zachary Jennifer insider trades
Zachary Jennifer has filed 22 Form 4s with the SEC that we hold, for Merck & Co., Inc. (MRK) (EVP, General Counsel) and REGENXBIO Inc. (RGNX) (Director). Across all of them we count 0 purchases worth $0 and 9 sales worth $57.9M reported on Form 4. In the last 12 months: 0 purchases ($0) and 4 sales ($25.2M). The largest single trade was a sale of 80,315 shares of Merck & Co., Inc. worth $10.7M, dated 2026-08-12. The first filing on our record is dated 2022-02-28 and the latest 2026-08-13.
Merck & Co., Inc. (MRK)
| Trade date | Code | Shares | Value as filed | Filed | Source |
|---|---|---|---|---|---|
| 2022-10-28 | S, sale reported on Form 4 | 65,487 | $6.5M | 2022-11-01 | SEC |
| 2022-10-28 | S, sale reported on Form 4 | 99,768 | $9.9M | 2022-11-01 | SEC |
| 2023-02-03 | S, sale reported on Form 4 | 75,436 | $7.8M | 2023-02-06 | SEC |
| 2023-05-04 | S, sale reported on Form 4 | 19,141 | $2.3M | 2023-05-05 | SEC |
| 2024-02-02 | S, sale reported on Form 4 | 49,499 | $6.3M | 2024-02-02 | SEC |
| 2026-02-09 | S, sale reported on Form 4 | 38,835 | $4.6M | 2026-02-09 | SEC |
| 2026-02-09 | S, sale reported on Form 4 | 56,792 | $6.8M | 2026-02-09 | SEC |
| 2026-02-09 | S, sale reported on Form 4 | 25,946 | $3.1M | 2026-02-09 | SEC |
| 2026-08-12 | S, sale reported on Form 4 | 80,315 | $10.7M | 2026-08-13 | SEC |
REGENXBIO Inc. (RGNX)
No purchase or sale of common stock reported here; these filings cover grants, option exercises or other codes.
Counted from the Form 4 filings this reporting owner (SEC CIK 1737231) filed on EDGAR. Values are the transaction values as filed. See every filing on EDGAR, or browse insider buying and today's insider purchases.

