Chattopadhyay Sanat has filed 34 insider transactions across 2 companies since January 2023.
Most recent transaction: a grant/award of 258 shares of ASHLAND INC. ($ASH) on March 31, 2026.
Activity breakdown: 0 open-market purchases and 7 sales.
| Transaction Date | Company | Ticker | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| March 31, 2026 | ASHLAND INC. | $ASH | Chattopadhyay Sanat | Not found | A | Common Stock Units | 258 | $55.61 | 1,952.0000 | 46 | 15.23% | 100.00% |
| Jan. 26, 2026 | Merck & Co., Inc. | $MRK | Chattopadhyay Sanat | Exe V-P & Pres. MMD | A | Common Stock | 13880 | $107.40 | 199,208.0000 | 2,514,000,000 | 7.49% | 0.00% |
| Jan. 20, 2026 | ASHLAND INC. | $ASH | Chattopadhyay Sanat | Not found | A | Restricted Stock Units | 2449 | $61.23 | 6,711.0000 | 46 | 57.46% | 100.00% |
| Dec. 31, 2025 | ASHLAND INC. | $ASH | Chattopadhyay Sanat | Not found | A | Common Stock Units | 245 | $58.67 | 1,679.0000 | 46,000,000 | 17.09% | 0.00% |
| Sept. 30, 2025 | ASHLAND INC. | $ASH | Chattopadhyay Sanat | Not found | A | Common Stock Units | 300 | $47.91 | 1,425.0000 | 47,000,000 | 26.67% | 0.00% |
| June 30, 2025 | ASHLAND INC. | $ASH | Chattopadhyay Sanat | Not found | A | Common Stock Units | 286 | $50.28 | 1,116.0000 | 47 | 34.46% | 100.00% |
| April 29, 2025 | Merck & Co., Inc. | $MRK | Chattopadhyay Sanat | Exe V-P & Pres. MMD | A | Restricted Stock Unit | 7791 | $0.00 | 7,791.0000 | 2,541,000,000 | 9999.99% | 0.00% |
| April 29, 2025 | Merck & Co., Inc. | $MRK | Chattopadhyay Sanat | Exe V-P & Pres. MMD | A | Stock Option (Right to Buy) | 35465 | $0.00 | 35,465.0000 | 2,541,000,000 | 9999.99% | 0.00% |
| March 31, 2025 | ASHLAND INC. | $ASH | Chattopadhyay Sanat | Not found | A | Common Stock Units | 235 | $59.29 | 823.0000 | 47 | 39.97% | 100.00% |
| Jan. 27, 2025 | Merck & Co., Inc. | $MRK | Chattopadhyay Sanat | Exe V-P & Pres. MMD | A | Common Stock | 28136 | $97.94 | 185,328.0000 | 2,541,000,000 | 17.90% | 0.00% |
| Jan. 21, 2025 | ASHLAND INC. | $ASH | Chattopadhyay Sanat | Not found | A | Restricted Stock Units | 2050 | $73.16 | 4,262.0000 | 47 | 92.68% | 100.00% |
| Dec. 31, 2024 | ASHLAND INC. | $ASH | Chattopadhyay Sanat | Not found | A | Common Stock Units | 175 | $71.46 | 583.0000 | 50,000,000 | 42.89% | 0.00% |
| Sept. 30, 2024 | ASHLAND INC. | $ASH | Chattopadhyay Sanat | Not found | A | Common Stock Units | 144 | $86.97 | 406.0000 | 51,000,000 | 54.96% | 0.00% |
| June 28, 2024 | ASHLAND INC. | $ASH | Chattopadhyay Sanat | Not found | A | Common Stock Units | 132 | $94.49 | 261.0000 | 54,000,000 | 102.33% | 0.00% |
| April 30, 2024 | Merck & Co., Inc. | $MRK | Chattopadhyay Sanat | Exe V-P & Pres. MMD | A | Stock Option (Right to Buy) | 38672 | $0.00 | 38,672.0000 | 2,547,000,000 | 9999.99% | 0.00% |
| March 28, 2024 | ASHLAND INC. | $ASH | Chattopadhyay Sanat | Not found | A | Common Stock Units | 128 | $97.37 | 128.0000 | 54,000,000 | 9999.99% | 0.00% |
| Jan. 23, 2024 | ASHLAND INC. | $ASH | Chattopadhyay Sanat | Not found | A | Restricted Stock Units | 1897 | $79.05 | 2,173.0000 | 54,000,000 | 687.32% | 0.00% |
| Jan. 22, 2024 | Merck & Co., Inc. | $MRK | Chattopadhyay Sanat | Exe V-P & Pres. MMD | A | Common Stock | 26716 | $119.43 | 157,192.0000 | 2,547,000,000 | 20.48% | 0.00% |
| Nov. 13, 2023 | ASHLAND INC. | $ASH | Chattopadhyay Sanat | Director | A | Restricted Stock Units | 275 | $73.15 | 275.0000 | 54,000,000 | 9999.99% | 0.00% |
| May 2, 2023 | Merck & Co., Inc. | $MRK | Chattopadhyay Sanat | Exe V-P & Pres. MMD | A | Stock Option (Right to Buy) | 45643 | $0.00 | 45,643.0000 | 2,542,000,000 | 9999.99% | 0.00% |
| April 13, 2023 | Merck & Co., Inc. | $MRK | Chattopadhyay Sanat | Exe V-P & Pres. MMD | M | Stock Option (Right to Buy) | 66163 | $0.00 | 0.0000 | 2,542,000,000 | 100.00% | 0.00% |
| April 13, 2023 | Merck & Co., Inc. | $MRK | Chattopadhyay Sanat | Exe V-P & Pres. MMD | M | Common Stock | 66163 | $62.07 | 264,531.0000 | 2,542,000,000 | 33.35% | 0.00% |
| April 13, 2023 | Merck & Co., Inc. | $MRK | Chattopadhyay Sanat | Exe V-P & Pres. MMD | S | Common Stock | 66163 | $115.06 | 198,368.0000 | 2,542,000,000 | 25.01% | 0.00% |
| April 13, 2023 | Merck & Co., Inc. | $MRK | Chattopadhyay Sanat | Exe V-P & Pres. MMD | S | Common Stock | 67892 | $115.07 | 130,476.0000 | 2,542,000,000 | 34.23% | 0.00% |
| April 13, 2023 | Merck & Co., Inc. | $MRK | Chattopadhyay Sanat | Exe V-P & Pres. MMD | M | Stock Option (Right to Buy) | 67892 | $0.00 | 0.0000 | 2,542,000,000 | 100.00% | 0.00% |
| April 13, 2023 | Merck & Co., Inc. | $MRK | Chattopadhyay Sanat | Exe V-P & Pres. MMD | M | Common Stock | 67892 | $56.04 | 198,368.0000 | 2,542,000,000 | 52.03% | 0.00% |
| Jan. 23, 2023 | Merck & Co., Inc. | $MRK | Chattopadhyay Sanat | Exe V-P & Pres. MMD | A | Common Stock | 17495 | $109.88 | 130,476.0000 | 2,542,000,000 | 15.48% | 0.00% |
| Jan. 9, 2023 | Merck & Co., Inc. | $MRK | Chattopadhyay Sanat | Exe V-P & Pres. MMD | S | Common Stock | 1702 | $114.46 | 112,981.0000 | 2,542,000,000 | 1.48% | 0.00% |
| Jan. 9, 2023 | Merck & Co., Inc. | $MRK | Chattopadhyay Sanat | Exe V-P & Pres. MMD | M | Stock Option (Right to Buy) | 83994 | $0.00 | 0.0000 | 2,542,000,000 | 100.00% | 0.00% |
| Jan. 9, 2023 | Merck & Co., Inc. | $MRK | Chattopadhyay Sanat | Exe V-P & Pres. MMD | S | Common Stock | 4538 | $111.73 | 156,839.0000 | 2,542,000,000 | 2.81% | 0.00% |
| Jan. 9, 2023 | Merck & Co., Inc. | $MRK | Chattopadhyay Sanat | Exe V-P & Pres. MMD | S | Common Stock | 35598 | $110.61 | 161,377.0000 | 2,542,000,000 | 18.07% | 0.00% |
| Jan. 9, 2023 | Merck & Co., Inc. | $MRK | Chattopadhyay Sanat | Exe V-P & Pres. MMD | M | Common Stock | 83994 | $53.06 | 196,975.0000 | 2,542,000,000 | 74.34% | 0.00% |
| Jan. 9, 2023 | Merck & Co., Inc. | $MRK | Chattopadhyay Sanat | Exe V-P & Pres. MMD | S | Common Stock | 38216 | $113.78 | 114,683.0000 | 2,542,000,000 | 24.99% | 0.00% |
| Jan. 9, 2023 | Merck & Co., Inc. | $MRK | Chattopadhyay Sanat | Exe V-P & Pres. MMD | S | Common Stock | 3940 | $112.78 | 152,899.0000 | 2,542,000,000 | 2.51% | 0.00% |