DesRosier Thomas
Insider CIK 1435744 · MCRB See Remarks · ARIA EVP, General Counsel · CBST SVP, Chief Legal Officer & GC
Trades across companies
| Ticker | Code | Trade | Filed | Shares | Price | Value | Owned after | |
|---|---|---|---|---|---|---|---|---|
| MCRB Seres Therapeutics, Inc. | S Sale | 2026-08-17 | 2026-08-18 | 82 | $4.55 | $373 | 8,117 | SEC↗ |
| MCRB Seres Therapeutics, Inc. | S Sale | 2026-08-17 | 2026-08-18 | 82 | $4.55 | $373 | 8,117 | SEC↗ |
| MCRB Seres Therapeutics, Inc. | M Exercise deriv | 2026-08-15 | 2026-08-18 | 133 | — | $0 | 265 | SEC↗ |
| MCRB Seres Therapeutics, Inc. | M Exercise deriv | 2026-08-15 | 2026-08-18 | 112 | — | $0 | 667 | SEC↗ |
| MCRB Seres Therapeutics, Inc. | M Exercise | 2026-08-15 | 2026-08-18 | 245 | — | $0 | 8,199 | SEC↗ |
| MCRB Seres Therapeutics, Inc. | M Exercise deriv | 2026-08-15 | 2026-08-18 | 112 | — | $0 | 667 | SEC↗ |
| MCRB Seres Therapeutics, Inc. | M Exercise deriv | 2026-08-15 | 2026-08-18 | 133 | — | $0 | 265 | SEC↗ |
| MCRB Seres Therapeutics, Inc. | M Exercise | 2026-08-15 | 2026-08-18 | 245 | — | — | 8,199 | SEC↗ |
| MCRB Seres Therapeutics, Inc. | A Award deriv | 2026-07-08 | 2026-07-10 | 7,500 | — | $0 | 7,500 | SEC↗ |
| MCRB Seres Therapeutics, Inc. | S Sale | 2026-05-18 | 2026-05-19 | 79 | $7.53 | $595 | 7,954 | SEC↗ |
| MCRB Seres Therapeutics, Inc. | M Exercise deriv | 2026-05-15 | 2026-05-19 | 133 | — | $0 | 398 | SEC↗ |
| MCRB Seres Therapeutics, Inc. | M Exercise deriv | 2026-05-15 | 2026-05-19 | 111 | — | $0 | 779 | SEC↗ |
| MCRB Seres Therapeutics, Inc. | M Exercise | 2026-05-15 | 2026-05-19 | 244 | — | $0 | 8,033 | SEC↗ |
| MCRB Seres Therapeutics, Inc. | A Award deriv | 2026-03-04 | 2026-03-06 | 22,500 | — | $0 | 22,500 | SEC↗ |
| MCRB Seres Therapeutics, Inc. | M Exercise deriv | 2026-02-15 | 2026-02-18 | 111 | — | $0 | 890 | SEC↗ |
| MCRB Seres Therapeutics, Inc. | M Exercise deriv | 2026-02-15 | 2026-02-18 | 133 | — | $0 | 531 | SEC↗ |
| MCRB Seres Therapeutics, Inc. | M Exercise | 2026-02-15 | 2026-02-18 | 244 | — | $0 | 7,867 | SEC↗ |
| MCRB Seres Therapeutics, Inc. | S Sale | 2026-02-15 | 2026-02-18 | 78 | $8.47 | $661 | 7,789 | SEC↗ |
| MCRB Seres Therapeutics, Inc. | M Exercise deriv | 2025-11-15 | 2025-11-18 | 132 | — | $0 | 664 | SEC↗ |
| MCRB Seres Therapeutics, Inc. | M Exercise deriv | 2025-11-15 | 2025-11-18 | 112 | — | $0 | 1,001 | SEC↗ |
| MCRB Seres Therapeutics, Inc. | S Sale | 2025-11-15 | 2025-11-18 | 76 | $17.30 | $1.3K | 7,623 | SEC↗ |
| MCRB Seres Therapeutics, Inc. | M Exercise | 2025-11-15 | 2025-11-18 | 112 | — | $0 | 7,699 | SEC↗ |
| MCRB Seres Therapeutics, Inc. | M Exercise | 2025-11-15 | 2025-11-18 | 132 | — | $0 | 7,587 | SEC↗ |
| MCRB Seres Therapeutics, Inc. | S Sale | 2025-08-18 | 2025-08-19 | 76 | $16.65 | $1.3K | 7,455 | SEC↗ |
| MCRB Seres Therapeutics, Inc. | M Exercise deriv | 2025-08-15 | 2025-08-19 | 133 | — | $0 | 796 | SEC↗ |
| MCRB Seres Therapeutics, Inc. | M Exercise deriv | 2025-08-15 | 2025-08-19 | 111 | — | $0 | 1,113 | SEC↗ |
| MCRB Seres Therapeutics, Inc. | M Exercise | 2025-08-15 | 2025-08-19 | 133 | — | $0 | 7,420 | SEC↗ |
| MCRB Seres Therapeutics, Inc. | M Exercise | 2025-08-15 | 2025-08-19 | 111 | — | $0 | 7,531 | SEC↗ |
| MCRB Seres Therapeutics, Inc. | M Exercise deriv | 2025-05-15 | 2025-05-19 | 133 | — | $0 | 929 | SEC↗ |
| MCRB Seres Therapeutics, Inc. | M Exercise deriv | 2025-05-15 | 2025-05-19 | 111 | — | $0 | 1,224 | SEC↗ |
| MCRB Seres Therapeutics, Inc. | M Exercise | 2025-05-15 | 2025-05-19 | 111 | — | $0 | 7,366 | SEC↗ |
| MCRB Seres Therapeutics, Inc. | M Exercise | 2025-05-15 | 2025-05-19 | 133 | — | $0 | 7,255 | SEC↗ |
| MCRB Seres Therapeutics, Inc. | S Sale | 2025-05-15 | 2025-05-19 | 79 | $7.28 | $575 | 7,287 | SEC↗ |
| MCRB Seres Therapeutics, Inc. | S Sale | 2025-02-18 | 2025-02-19 | 4,300 | $0.81 | $3.5K | 142,456 | SEC↗ |
| MCRB Seres Therapeutics, Inc. | M Exercise deriv | 2025-02-15 | 2025-02-19 | 8,907 | — | $0 | 26,718 | SEC↗ |
| MCRB Seres Therapeutics, Inc. | M Exercise deriv | 2025-02-15 | 2025-02-19 | 2,657 | — | $0 | 21,250 | SEC↗ |
| MCRB Seres Therapeutics, Inc. | M Exercise | 2025-02-15 | 2025-02-19 | 2,657 | — | $0 | 137,849 | SEC↗ |
| MCRB Seres Therapeutics, Inc. | M Exercise | 2025-02-15 | 2025-02-19 | 8,907 | — | $0 | 146,756 | SEC↗ |
| MCRB Seres Therapeutics, Inc. | A Award deriv | 2025-02-07 | 2025-02-11 | 650,000 | — | $0 | 650,000 | SEC↗ |
| MCRB Seres Therapeutics, Inc. | S Sale | 2024-11-18 | 2024-11-19 | 878 | $0.54 | $474 | 135,192 | SEC↗ |
| MCRB Seres Therapeutics, Inc. | M Exercise deriv | 2024-11-15 | 2024-11-19 | 2,656 | — | $0 | 23,907 | SEC↗ |
| MCRB Seres Therapeutics, Inc. | M Exercise | 2024-11-15 | 2024-11-19 | 2,656 | — | $0 | 136,070 | SEC↗ |
| MCRB Seres Therapeutics, Inc. | S Sale | 2024-10-28 | 2024-10-29 | 4,259 | $0.69 | $2.9K | 133,414 | SEC↗ |
| MCRB Seres Therapeutics, Inc. | M Exercise deriv | 2024-10-27 | 2024-10-29 | 13,500 | — | $0 | 0 | SEC↗ |
| MCRB Seres Therapeutics, Inc. | M Exercise | 2024-10-27 | 2024-10-29 | 13,500 | — | $0 | 137,673 | SEC↗ |
| MCRB Seres Therapeutics, Inc. | S Sale | 2024-08-16 | 2024-08-19 | 873 | $0.84 | $733 | 124,173 | SEC↗ |
| MCRB Seres Therapeutics, Inc. | M Exercise deriv | 2024-08-15 | 2024-08-19 | 2,656 | — | $0 | 26,563 | SEC↗ |
| MCRB Seres Therapeutics, Inc. | M Exercise | 2024-08-15 | 2024-08-19 | 2,656 | — | $0 | 125,046 | SEC↗ |
| MCRB Seres Therapeutics, Inc. | M Exercise deriv | 2024-05-15 | 2024-05-17 | 2,656 | — | $0 | 29,219 | SEC↗ |
| MCRB Seres Therapeutics, Inc. | M Exercise | 2024-05-15 | 2024-05-17 | 2,656 | — | $0 | 123,233 | SEC↗ |
| MCRB Seres Therapeutics, Inc. | S Sale | 2024-05-15 | 2024-05-17 | 843 | $0.94 | $792 | 122,390 | SEC↗ |
| MCRB Seres Therapeutics, Inc. | S Sale | 2024-02-16 | 2024-02-16 | 3,939 | $1.08 | $4.3K | 120,577 | SEC↗ |
| MCRB Seres Therapeutics, Inc. | M Exercise deriv | 2024-02-15 | 2024-02-16 | 10,625 | — | $0 | 31,875 | SEC↗ |
| MCRB Seres Therapeutics, Inc. | M Exercise | 2024-02-15 | 2024-02-16 | 10,625 | — | $0 | 124,516 | SEC↗ |
| MCRB Seres Therapeutics, Inc. | A Award deriv | 2024-02-14 | 2024-02-16 | 287,905 | — | $0 | 287,905 | SEC↗ |
| MCRB Seres Therapeutics, Inc. | A Award deriv | 2024-02-14 | 2024-02-16 | 213,750 | — | $0 | 213,750 | SEC↗ |
| MCRB Seres Therapeutics, Inc. | A Award deriv | 2024-02-14 | 2024-02-16 | 35,625 | — | $0 | 35,625 | SEC↗ |
| MCRB Seres Therapeutics, Inc. | S Sale | 2023-10-30 | 2023-10-31 | 4,156 | $1.35 | $5.6K | 113,891 | SEC↗ |
| MCRB Seres Therapeutics, Inc. | M Exercise deriv | 2023-10-27 | 2023-10-31 | 13,501 | — | $0 | 13,500 | SEC↗ |
| MCRB Seres Therapeutics, Inc. | M Exercise | 2023-10-27 | 2023-10-31 | 13,501 | — | $0 | 118,047 | SEC↗ |
| MCRB Seres Therapeutics, Inc. | A Award deriv | 2023-04-27 | 2023-10-31 | 27,001 | — | $0 | 27,001 | SEC↗ |
| MCRB Seres Therapeutics, Inc. | A Award deriv | 2023-02-03 | 2023-02-07 | 85,000 | — | $0 | 85,000 | SEC↗ |
| MCRB Seres Therapeutics, Inc. | A Award deriv | 2023-02-03 | 2023-02-07 | 42,500 | — | $0 | 42,500 | SEC↗ |
| MCRB Seres Therapeutics, Inc. | A Award | 2022-07-05 | 2022-07-06 | 63,492 | $3.15 | $200.0K | 104,546 | SEC↗ |
| MCRB Seres Therapeutics, Inc. | A Award deriv | 2022-02-04 | 2022-02-08 | 130,000 | — | $0 | 130,000 | SEC↗ |
| MCRB Seres Therapeutics, Inc. | A Award deriv | 2021-02-04 | 2021-02-08 | 100,000 | — | $0 | 100,000 | SEC↗ |
| MCRB Seres Therapeutics, Inc. | A Award deriv | 2020-01-29 | 2020-01-31 | 350,000 | — | $0 | 350,000 | SEC↗ |
| MCRB Seres Therapeutics, Inc. | M Exercise deriv | 2020-01-26 | 2020-01-28 | 25,000 | — | $0 | 0 | SEC↗ |
| MCRB Seres Therapeutics, Inc. | M Exercise | 2020-01-26 | 2020-01-28 | 25,000 | — | $0 | 41,054 | SEC↗ |
| MCRB Seres Therapeutics, Inc. | S Sale | 2019-01-28 | 2019-01-29 | 5,471 | $5.75 | $31.5K | 16,054 | SEC↗ |
| MCRB Seres Therapeutics, Inc. | M Exercise deriv | 2019-01-26 | 2019-01-29 | 15,000 | — | $0 | 25,000 | SEC↗ |
| MCRB Seres Therapeutics, Inc. | M Exercise | 2019-01-26 | 2019-01-29 | 15,000 | — | $0 | 21,525 | SEC↗ |
| MCRB Seres Therapeutics, Inc. | A Award deriv | 2019-01-25 | 2019-01-29 | 84,800 | — | $0 | 84,800 | SEC↗ |
| MCRB Seres Therapeutics, Inc. | A Award deriv | 2018-01-30 | 2018-01-30 | 80,000 | — | $0 | 80,000 | SEC↗ |
| MCRB Seres Therapeutics, Inc. | A Award deriv | 2018-01-30 | 2018-01-30 | 100,000 | — | $0 | 100,000 | SEC↗ |
| MCRB Seres Therapeutics, Inc. | M Exercise deriv | 2018-01-26 | 2018-01-30 | 10,000 | — | $0 | 40,000 | SEC↗ |
| MCRB Seres Therapeutics, Inc. | S Sale | 2018-01-26 | 2018-01-30 | 3,475 | $11.02 | $38.3K | 6,525 | SEC↗ |
| MCRB Seres Therapeutics, Inc. | M Exercise | 2018-01-26 | 2018-01-30 | 10,000 | — | $0 | 10,000 | SEC↗ |
| MCRB Seres Therapeutics, Inc. | A Award deriv | 2017-01-26 | 2017-01-27 | 50,000 | — | $0 | 50,000 | SEC↗ |
| MCRB Seres Therapeutics, Inc. | A Award deriv | 2017-01-26 | 2017-01-27 | 60,000 | — | $0 | 60,000 | SEC↗ |
| MCRB Seres Therapeutics, Inc. | A Award deriv | 2016-06-01 | 2016-06-02 | 100,000 | — | $0 | 100,000 | SEC↗ |
| ARIA ARIAD PHARMACEUTICALS INC | A Award deriv | 2016-03-07 | 2016-03-09 | 30,800 | — | $0 | 30,800 | SEC↗ |
| ARIA ARIAD PHARMACEUTICALS INC | A Award deriv | 2016-03-07 | 2016-03-09 | 102,500 | — | $0 | 102,500 | SEC↗ |
| ARIA ARIAD PHARMACEUTICALS INC | M Exercise deriv | 2016-02-18 | 2016-03-30 | 55,000 | — | $0 | 55,000 | SEC↗ |
| ARIA ARIAD PHARMACEUTICALS INC | M Exercise | 2016-02-18 | 2016-03-30 | 55,000 | — | $0 | 55,000 | SEC↗ |
| ARIA ARIAD PHARMACEUTICALS INC | F Tax w/h | 2016-02-18 | 2016-03-30 | 18,370 | $5.03 | $92.4K | 36,630 | SEC↗ |
| ARIA ARIAD PHARMACEUTICALS INC | A Award deriv | 2015-02-18 | 2015-02-20 | 130,000 | — | $0 | 130,000 | SEC↗ |
| ARIA ARIAD PHARMACEUTICALS INC | A Award deriv | 2015-02-18 | 2015-02-20 | 110,000 | — | $0 | 110,000 | SEC↗ |
| CBST CUBIST PHARMACEUTICALS INC | D To issuer deriv | 2015-01-21 | 2015-01-21 | 4,900 | — | $0 | 0 | SEC↗ |
| CBST CUBIST PHARMACEUTICALS INC | D To issuer deriv | 2015-01-21 | 2015-01-21 | 33,433 | — | $0 | 0 | SEC↗ |
| CBST CUBIST PHARMACEUTICALS INC | D To issuer deriv | 2015-01-21 | 2015-01-21 | 7,132 | — | $0 | 0 | SEC↗ |
| CBST CUBIST PHARMACEUTICALS INC | D To issuer deriv | 2015-01-21 | 2015-01-21 | 52,232 | — | $0 | 0 | SEC↗ |
| CBST CUBIST PHARMACEUTICALS INC | D To issuer deriv | 2015-01-21 | 2015-01-21 | 4,356 | — | $0 | 0 | SEC↗ |
| CBST CUBIST PHARMACEUTICALS INC | J Other | 2015-01-21 | 2015-01-21 | 479 | $102.00 | $48.9K | 0 | SEC↗ |
| CBST CUBIST PHARMACEUTICALS INC | J Other | 2015-01-21 | 2015-01-21 | 7,967 | $102.00 | $812.6K | 0 | SEC↗ |
| CBST CUBIST PHARMACEUTICALS INC | J Other | 2014-12-31 | 2015-01-05 | 148 | $59.96 | $8.9K | 7,967 | SEC↗ |
| CBST CUBIST PHARMACEUTICALS INC | J Other | 2014-12-31 | 2014-01-02 | 278 | $42.59 | $11.8K | 278 | SEC↗ |
| CBST CUBIST PHARMACEUTICALS INC | M Exercise deriv | 2014-12-29 | 2014-12-31 | 17,975 | — | $0 | 52,232 | SEC↗ |
| CBST CUBIST PHARMACEUTICALS INC | M Exercise | 2014-12-29 | 2014-12-31 | 17,975 | $45.90 | $825.1K | 19,797 | SEC↗ |
| CBST CUBIST PHARMACEUTICALS INC | F Tax w/h | 2014-12-29 | 2014-12-31 | 11,978 | $100.71 | $1.21M | 7,819 | SEC↗ |
| CBST CUBIST PHARMACEUTICALS INC | J Other | 2014-09-30 | 2014-10-02 | 48 | $66.34 | $3.2K | 479 | SEC↗ |
| CBST CUBIST PHARMACEUTICALS INC | J Other | 2014-06-30 | 2014-07-02 | 89 | $69.82 | $6.2K | 431 | SEC↗ |
| CBST CUBIST PHARMACEUTICALS INC | J Other | 2014-06-30 | 2014-07-02 | 213 | $57.87 | $12.3K | 1,822 | SEC↗ |
| CBST CUBIST PHARMACEUTICALS INC | S Sale | 2014-04-16 | 2014-04-16 | 768 | $64.00 | $49.2K | 1,609 | SEC↗ |
| CBST CUBIST PHARMACEUTICALS INC | M Exercise deriv | 2014-04-15 | 2014-04-16 | 2,377 | — | $0 | 7,132 | SEC↗ |
| CBST CUBIST PHARMACEUTICALS INC | M Exercise | 2014-04-15 | 2014-04-16 | 2,377 | — | $0 | 2,377 | SEC↗ |
| CBST CUBIST PHARMACEUTICALS INC | J Other | 2014-03-31 | 2014-04-02 | 84 | $73.15 | $6.1K | 342 | SEC↗ |
| CBST CUBIST PHARMACEUTICALS INC | A Award deriv | 2014-02-14 | 2014-02-19 | 4,900 | — | $0 | 4,900 | SEC↗ |
| CBST CUBIST PHARMACEUTICALS INC | A Award deriv | 2014-02-14 | 2014-02-19 | 33,433 | — | $0 | 33,433 | SEC↗ |
| CBST CUBIST PHARMACEUTICALS INC | A Award deriv | 2014-02-14 | 2014-02-19 | 4,356 | — | $0 | 4,356 | SEC↗ |
| CBST CUBIST PHARMACEUTICALS INC | J Other | 2013-12-31 | 2014-01-02 | 67 | $68.87 | $4.6K | 258 | SEC↗ |
| CBST CUBIST PHARMACEUTICALS INC | J Other | 2013-09-30 | 2013-10-02 | 93 | $63.55 | $5.9K | 191 | SEC↗ |
| CBST CUBIST PHARMACEUTICALS INC | J Other | 2013-06-28 | 2013-07-02 | 98 | $48.29 | $4.7K | 98 | SEC↗ |
| CBST CUBIST PHARMACEUTICALS INC | A Award deriv | 2013-04-15 | 2013-04-16 | 70,207 | — | $0 | 70,207 | SEC↗ |
| CBST CUBIST PHARMACEUTICALS INC | A Award deriv | 2013-04-15 | 2013-04-16 | 9,509 | — | $0 | 9,509 | SEC↗ |