Chattopadhyay Sanat (CIK 1670690) reported 3 SEC Form 4 insider transactions across 1 companies over the past 18 months (most recent 2026-05-01). Recent activity: Buy MRK (2,597 shares), Sell MRK (1,130 shares), Buy MRK (13,880 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-05-01 | Merck & Co., Inc. (MRK) | Exe V-P & Pres. MMD | Buy | 2,597 | $285,748 |
| 2026-05-01 | Merck & Co., Inc. (MRK) | Exe V-P & Pres. MMD | Sell | 1,130 | $124,334 |
| 2026-01-28 | Merck & Co., Inc. (MRK) | Exe V-P & Pres. MMD | Buy | 13,880 | $1.5M |
来源：SEC Form 4 申报文件 · 截至 2026-05-01