Skip to contentChattopadhyay Sanat — MERCK & CO INC insider: 85 transactions · InsiderLensChattopadhyay Sanat
- Director at ASHLAND INC. · on record since Apr 1, 2026
- Exe V-P & Pres. MMD at MERCK & CO INC · on record since May 1, 2026
Insider trading activity of Chattopadhyay Sanat
- Transactions on record
- 85
- since May 9, 2016
- Open-market buys
- 0
- Open-market sells
- 12
- $45.6M
- Companies traded
- 2
- last filing Jul 1, 2026
Figures computed from official regulatory filings — methodology.
Companies where Chattopadhyay Sanat has traded
Track record of Chattopadhyay Sanat
Insufficient history for a statistical track record (fewer than 5 open-market buys).
Transaction history of Chattopadhyay Sanat
Co-insiders of Chattopadhyay Sanat
This page republishes public regulatory disclosures. Concerned by this data? Exercise your right to object →
BARSHAY STANLEY FMERCK & CO INC
| Company | Filed | Type | Qty | Price | Value · USD | Src |
|---|
| Jul 1, 2026 | AwardD | 218 | 65.89 USD | — | SEC |
| May 1, 2026 | ExerciseD | -2,597 | 0.00 USD | $0 | SEC |
| May 1, 2026 | Exercise | 2,597 | 110.03 USD | $285.7K | SEC |
| May 1, 2026 | Other | -1,130 | 110.03 USD | $124.3K | SEC |
| Apr 1, 2026 | AwardD | 258 | 55.61 USD | $14.3K | SEC |
| Jan 28, 2026 | Award | 13,880 | 107.40 USD | $1.5M | SEC |
| Jan 21, 2026 | AwardD | 2,449 | 61.23 USD | $150K | SEC |
| Jan 5, 2026 | AwardD | 245 | 58.67 USD | $14.4K | SEC |
| Oct 2, 2025 | AwardD | 300 | 47.91 USD | $14.4K | SEC |
| Jul 2, 2025 | AwardD | 286 | 50.28 USD | $14.4K | SEC |
| May 1, 2025 | AwardD | 35,465 | 0.00 USD | $0 | SEC |
| May 1, 2025 | AwardD | 7,791 | 0.00 USD | $0 | SEC |
| Apr 1, 2025 | AwardD | 235 | 59.29 USD | $13.9K | SEC |
| Jan 29, 2025 | Award | 28,136 | 97.94 USD | $2.8M | SEC |
| Jan 23, 2025 | AwardD | 2,050 | 73.16 USD | $150K | SEC |
| Jan 2, 2025 | AwardD | 175 | 71.46 USD | $12.5K | SEC |
| Oct 2, 2024 | AwardD | 144 | 86.97 USD | $12.5K | SEC |
| Jul 1, 2024 | AwardD | 132 | 94.49 USD | $12.5K | SEC |
| May 2, 2024 | AwardD | 38,672 | 0.00 USD | $0 | SEC |
| Apr 1, 2024 | AwardD | 128 | 97.37 USD | $12.5K | SEC |
| Jan 25, 2024 | AwardD | 1,897 | 79.05 USD | $150K | SEC |
| Jan 24, 2024 | Award | 26,716 | 119.43 USD | $3.2M | SEC |
| Nov 14, 2023 | AwardD | 275 | 73.15 USD | $20.1K | SEC |
| May 4, 2023 | AwardD | 45,643 | 0.00 USD | $0 | SEC |
| Apr 14, 2023 | Sell | -67,892 | 115.07 USD | $7.8M | SEC |