Thomas Desrosier
Insider
First SEC filing: Feb. 8, 2021 · Latest: Feb. 8, 2021
Insider at
Insider transactions
0 buys (P)
4 sells (S)
Net: $-2,944
Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| Aug. 17, 2026 | MCRB | S 10b5-1 | 82 | $4.55 | $373 | 8,117 Direct | -1.00% | Disposed | -37.0% (price as of 2026-10-05) |
| Aug. 15, 2026 | MCRB | M | 245 | · | · | 8,199 Direct | +3.08% | Acquired | (price as of 2026-10-05) |
| Aug. 15, 2026 | MCRB | M | 133 | · | · | 265 Direct | -33.42% | Disposed | (price as of 2026-10-05) |
| Aug. 15, 2026 | MCRB | M | 112 | · | · | 667 Direct | -14.38% | Disposed | (price as of 2026-10-05) |
| July 8, 2026 | MCRB | A | 7,500 | · | · | 7,500 Direct | · | Acquired | (price as of 2026-10-05) |
| May 18, 2026 | MCRB | S 10b5-1 | 79 | $7.53 | $595 | 7,954 Direct | -0.98% | Disposed | -61.9% (price as of 2026-10-05) |
| May 15, 2026 | MCRB | M | 111 | · | · | 779 Direct | -12.47% | Disposed | (price as of 2026-10-05) |
| May 15, 2026 | MCRB | M | 133 | · | · | 398 Direct | -25.05% | Disposed | (price as of 2026-10-05) |
| May 15, 2026 | MCRB | M | 244 | · | · | 8,033 Direct | +3.13% | Acquired | (price as of 2026-10-05) |
| March 4, 2026 | MCRB | A | 22,500 | · | · | 22,500 Direct | · | Acquired | (price as of 2026-10-05) |
| Feb. 15, 2026 | MCRB | M | 111 | · | · | 890 Direct | -11.09% | Disposed | (price as of 2026-10-05) |
| Feb. 15, 2026 | MCRB | M | 133 | · | · | 531 Direct | -20.03% | Disposed | (price as of 2026-10-05) |
| Feb. 15, 2026 | MCRB | S 10b5-1 | 78 | $8.47 | $661 | 7,789 Direct | -0.99% | Disposed | -66.1% (price as of 2026-10-05) |
| Feb. 15, 2026 | MCRB | M | 244 | · | · | 7,867 Direct | +3.20% | Acquired | (price as of 2026-10-05) |
| Nov. 15, 2025 | MCRB | M | 112 | · | · | 1,001 Direct | -10.06% | Disposed | (price as of 2026-10-05) |
| Nov. 15, 2025 | MCRB | M | 132 | · | · | 664 Direct | -16.58% | Disposed | (price as of 2026-10-05) |
| Nov. 15, 2025 | MCRB | S 10b5-1 | 76 | $17.30 | $1,315 | 7,623 Direct | -0.99% | Disposed | -83.4% (price as of 2026-10-05) |
| Nov. 15, 2025 | MCRB | M | 112 | · | · | 7,699 Direct | +1.48% | Acquired | (price as of 2026-10-05) |
| Nov. 15, 2025 | MCRB | M | 132 | · | · | 7,587 Direct | +1.77% | Acquired | (price as of 2026-10-05) |
| Aug. 18, 2025 | MCRB | S 10b5-1 | 76 | $16.65 | $1,265 | 7,455 Direct | -1.01% | Disposed | -82.8% (price as of 2026-10-05) |
| Aug. 15, 2025 | MCRB | M | 111 | · | · | 1,113 Direct | -9.07% | Disposed | (price as of 2026-10-05) |
| Aug. 15, 2025 | MCRB | M | 133 | · | · | 796 Direct | -14.32% | Disposed | (price as of 2026-10-05) |
| Aug. 15, 2025 | MCRB | M | 111 | · | · | 7,531 Direct | +1.50% | Acquired | (price as of 2026-10-05) |
| Aug. 15, 2025 | MCRB | M | 133 | · | · | 7,420 Direct | +1.83% | Acquired | (price as of 2026-10-05) |
| May 15, 2025 | MCRB | M | 111 | · | · | 1,224 Direct | -8.31% | Disposed | (price as of 2026-10-05) |
| May 15, 2025 | MCRB | M | 133 | · | · | 929 Direct | -12.52% | Disposed | (price as of 2026-10-05) |
| May 15, 2025 | MCRB | S 10b5-1 | 79 | $7.28 | $575 | 7,287 Direct | -1.07% | Disposed | -60.6% (price as of 2026-10-05) |
| May 15, 2025 | MCRB | M | 111 | · | · | 7,366 Direct | +1.53% | Acquired | (price as of 2026-10-05) |
| May 15, 2025 | MCRB | M | 133 | · | · | 7,255 Direct | +1.87% | Acquired | (price as of 2026-10-05) |
| Feb. 18, 2025 | MCRB | S 10b5-1 | 4,300 | $0.81 | $3,483 | 142,456 Direct | -2.93% | Disposed | -82.3% (price as of 2026-10-05) |
| Feb. 15, 2025 | MCRB | M | 8,907 | · | · | 26,718 Direct | -25.00% | Disposed | (price as of 2026-10-05) |
| Feb. 15, 2025 | MCRB | M | 2,657 | · | · | 21,250 Direct | -11.11% | Disposed | (price as of 2026-10-05) |
| Feb. 15, 2025 | MCRB | M | 8,907 | · | · | 146,756 Direct | +6.46% | Acquired | (price as of 2026-10-05) |
| Feb. 15, 2025 | MCRB | M | 2,657 | · | · | 137,849 Direct | +1.97% | Acquired | (price as of 2026-10-05) |
| Feb. 7, 2025 | MCRB | A | 650,000 | · | · | 650,000 Direct | · | Acquired | (price as of 2026-10-05) |
| Nov. 18, 2024 | MCRB | S 10b5-1 | 878 | $0.54 | $474 | 135,192 Direct | -0.65% | Disposed | -73.4% (price as of 2026-10-05) |
| Nov. 15, 2024 | MCRB | M | 2,656 | · | · | 23,907 Direct | -10.00% | Disposed | (price as of 2026-10-05) |
| Nov. 15, 2024 | MCRB | M | 2,656 | · | · | 136,070 Direct | +1.99% | Acquired | (price as of 2026-10-05) |
| Oct. 28, 2024 | MCRB | S 10b5-1 | 4,259 | $0.69 | $2,939 | 133,414 Direct | -3.09% | Disposed | -79.2% (price as of 2026-10-05) |
| Oct. 27, 2024 | MCRB | M | 13,500 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-05) |
| Oct. 27, 2024 | MCRB | M | 13,500 | · | · | 137,673 Direct | +10.87% | Acquired | (price as of 2026-10-05) |
| Aug. 16, 2024 | MCRB | S 10b5-1 | 873 | $0.84 | $733 | 124,173 Direct | -0.70% | Disposed | -82.9% (price as of 2026-10-05) |
| Aug. 15, 2024 | MCRB | M | 2,656 | · | · | 26,563 Direct | -9.09% | Disposed | (price as of 2026-10-05) |
| Aug. 15, 2024 | MCRB | M | 2,656 | · | · | 125,046 Direct | +2.17% | Acquired | (price as of 2026-10-05) |
| May 15, 2024 | MCRB | M | 2,656 | · | · | 29,219 Direct | -8.33% | Disposed | (price as of 2026-10-05) |
| May 15, 2024 | MCRB | S 10b5-1 | 843 | $0.94 | $792 | 122,390 Direct | -0.68% | Disposed | -84.7% (price as of 2026-10-05) |
| May 15, 2024 | MCRB | M | 2,656 | · | · | 123,233 Direct | +2.20% | Acquired | (price as of 2026-10-05) |
| Feb. 16, 2024 | MCRB | S 10b5-1 | 3,939 | $1.08 | $4,254 | 120,577 Direct | -3.16% | Disposed | -86.7% (price as of 2026-10-05) |
| Feb. 15, 2024 | MCRB | M | 10,625 | · | · | 31,875 Direct | -25.00% | Disposed | (price as of 2026-10-05) |
| Feb. 15, 2024 | MCRB | M | 10,625 | · | · | 124,516 Direct | +9.33% | Acquired | (price as of 2026-10-05) |
| Feb. 14, 2024 | MCRB | A | 35,625 | · | · | 35,625 Direct | · | Acquired | (price as of 2026-10-05) |
| Feb. 14, 2024 | MCRB | A | 287,905 | · | · | 287,905 Direct | · | Acquired | (price as of 2026-10-05) |
| Feb. 14, 2024 | MCRB | A | 213,750 | · | · | 213,750 Direct | · | Acquired | (price as of 2026-10-05) |
| Oct. 30, 2023 | MCRB | S 10b5-1 | 4,156 | $1.35 | $5,611 | 113,891 Direct | -3.52% | Disposed | -89.4% (price as of 2026-10-05) |
| Oct. 27, 2023 | MCRB | M | 13,501 | · | · | 13,500 Direct | -50.00% | Disposed | (price as of 2026-10-05) |
| Oct. 27, 2023 | MCRB | M | 13,501 | · | · | 118,047 Direct | +12.91% | Acquired | (price as of 2026-10-05) |
| April 27, 2023 | MCRB | A | 27,001 | · | · | 27,001 Direct | · | Acquired | (price as of 2026-10-05) |
| Feb. 3, 2023 | MCRB | A | 85,000 | · | · | 85,000 Direct | · | Acquired | (price as of 2026-10-05) |
| Feb. 3, 2023 | MCRB | A | 42,500 | · | · | 42,500 Direct | · | Acquired | (price as of 2026-10-05) |
| July 5, 2022 | MCRB | A | 63,492 | $3.15 | $200,000 | 104,546 Direct | +154.65% | Acquired | -95.4% (price as of 2026-10-05) |
| Feb. 4, 2022 | MCRB | A | 130,000 | · | · | 130,000 Direct | · | Acquired | (price as of 2026-10-05) |
| Feb. 4, 2021 | MCRB | A | 100,000 | · | · | 100,000 Direct | · | Acquired | (price as of 2026-10-05) |
| Jan. 29, 2020 | MCRB | A | 350,000 | · | · | 350,000 Direct | · | Acquired | (price as of 2026-10-05) |
| Jan. 26, 2020 | MCRB | M | 25,000 | · | · | 41,054 Direct | +155.72% | Acquired | (price as of 2026-10-05) |
| Jan. 26, 2020 | MCRB | M | 25,000 | · | · | 0 Direct | -100.00% | Disposed | (price as of 2026-10-05) |
| Jan. 28, 2019 | MCRB | S | 5,471 | $5.75 | $31,458 | 16,054 Direct | -25.42% | Disposed | -97.5% (price as of 2026-10-05) |
| Jan. 26, 2019 | MCRB | M | 15,000 | · | · | 25,000 Direct | -37.50% | Disposed | (price as of 2026-10-05) |
| Jan. 26, 2019 | MCRB | M | 15,000 | · | · | 21,525 Direct | +229.89% | Acquired | (price as of 2026-10-05) |
| Jan. 25, 2019 | MCRB | A | 84,800 | · | · | 84,800 Direct | · | Acquired | (price as of 2026-10-05) |
| Jan. 30, 2018 | MCRB | A | 100,000 | · | · | 100,000 Direct | -50.00% | Disposed | (price as of 2026-10-05) |
| Jan. 30, 2018 | MCRB | A | 80,000 | · | · | 80,000 Direct | -50.00% | Disposed | (price as of 2026-10-05) |
| Jan. 26, 2018 | MCRB | M | 10,000 | · | · | 40,000 Direct | -20.00% | Disposed | (price as of 2026-10-05) |
| Jan. 26, 2018 | MCRB | S | 3,475 | $11.02 | $38,294 | 6,525 Direct | -34.75% | Disposed | -98.7% (price as of 2026-10-05) |
| Jan. 26, 2018 | MCRB | M | 10,000 | · | · | 10,000 Direct | · | Acquired | (price as of 2026-10-05) |
| Jan. 26, 2017 | MCRB | A | 50,000 | · | · | 50,000 Direct | · | Acquired | (price as of 2026-10-05) |
| Jan. 26, 2017 | MCRB | A | 60,000 | · | · | 60,000 Direct | · | Acquired | (price as of 2026-10-05) |
| June 1, 2016 | MCRB | A | 100,000 | · | · | 100,000 Direct | · | Acquired | (price as of 2026-10-05) |
P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding
Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.
Derivative holdings (Form 4 Table II) Options, RSUs and convertible securities reported on Form 4 Table II.
| Date | Ticker | Security | Underlying | Exercise price | Expiration | Shares | A/D |
|---|---|---|---|---|---|---|---|
| Aug. 15, 2026 | MCRB | Restricted Stock Units | Common Stock | · | · | 133 | Disposed |
| Aug. 15, 2026 | MCRB | Restricted Stock Units | Common Stock | · | · | 112 | Disposed |
| July 8, 2026 | MCRB | Stock Option (right to buy) | Common Stock | $9.13 | March 3, 2036 | 7,500 | Acquired |
| May 15, 2026 | MCRB | Restricted Stock Units | Common Stock | · | · | 111 | Disposed |
| May 15, 2026 | MCRB | Restricted Stock Units | Common Stock | · | · | 133 | Disposed |
| March 4, 2026 | MCRB | Stock Option (right to buy) | Common Stock | $9.13 | March 3, 2036 | 22,500 | Acquired |
| Feb. 15, 2026 | MCRB | Restricted Stock Units | Common Stock | · | · | 111 | Disposed |
| Feb. 15, 2026 | MCRB | Restricted Stock Units | Common Stock | · | · | 133 | Disposed |
| Nov. 15, 2025 | MCRB | Restricted Stock Units | Common Stock | · | · | 112 | Disposed |
| Nov. 15, 2025 | MCRB | Restricted Stock Units | Common Stock | · | · | 132 | Disposed |
| Aug. 15, 2025 | MCRB | Restricted Stock Units | Common Stock | · | · | 111 | Disposed |
| Aug. 15, 2025 | MCRB | Restricted Stock Units | Common Stock | · | · | 133 | Disposed |
| May 15, 2025 | MCRB | Restricted Stock Units | Common Stock | · | · | 111 | Disposed |
| May 15, 2025 | MCRB | Restricted Stock Units | Common Stock | · | · | 133 | Disposed |
| Feb. 15, 2025 | MCRB | Restricted Stock Units | Common Stock | · | · | 8,907 | Disposed |
| Feb. 15, 2025 | MCRB | Restricted Stock Units | Common Stock | · | · | 2,657 | Disposed |
| Feb. 7, 2025 | MCRB | Stock Option (Right to Buy) | Common Stock | $0.78 | Feb. 6, 2035 | 650,000 | Acquired |
| Nov. 15, 2024 | MCRB | Restricted Stock Units | Common Stock | · | · | 2,656 | Disposed |
| Oct. 27, 2024 | MCRB | Restricted Stock Units | Common Stock | · | · | 13,500 | Disposed |
| Aug. 15, 2024 | MCRB | Restricted Stock Units | Common Stock | · | · | 2,656 | Disposed |
| May 15, 2024 | MCRB | Restricted Stock Units | Common Stock | · | · | 2,656 | Disposed |
| Feb. 15, 2024 | MCRB | Restricted Stock Units | Common Stock | · | · | 10,625 | Disposed |
| Feb. 14, 2024 | MCRB | Restricted Stock Units | Common Stock | · | · | 35,625 | Acquired |
| Feb. 14, 2024 | MCRB | Stock Option (Right to Buy) | Common Stock | $1.10 | Feb. 13, 2034 | 287,905 | Acquired |
| Feb. 14, 2024 | MCRB | Stock Option (Right to Buy) | Common Stock | $1.10 | Feb. 13, 2034 | 213,750 | Acquired |
| Oct. 27, 2023 | MCRB | Restricted Stock Units | Common Stock | · | · | 13,501 | Disposed |
| April 27, 2023 | MCRB | Restricted Stock Units | Common Stock | · | · | 27,001 | Acquired |
| Feb. 3, 2023 | MCRB | Stock Option (Right to Buy) | Common Stock | $5.50 | Feb. 2, 2033 | 85,000 | Acquired |
| Feb. 3, 2023 | MCRB | Restricted Stock Units | Common Stock | · | · | 42,500 | Acquired |
| Feb. 4, 2022 | MCRB | Stock Option (Right to Buy) | Common Stock | $7.38 | Feb. 3, 2032 | 130,000 | Acquired |
| Feb. 4, 2021 | MCRB | Stock Option (Right to Buy) | Common Stock | $26.34 | Feb. 3, 2031 | 100,000 | Acquired |
| Jan. 29, 2020 | MCRB | STOCK OPTION (RIGHT TO BUY) | Common Stock | $3.30 | Jan. 28, 2030 | 350,000 | Acquired |
| Jan. 26, 2020 | MCRB | RESTRICTED STOCK UNITS | Common Stock | · | · | 25,000 | Disposed |
| Jan. 26, 2019 | MCRB | RESTRICTED STOCK UNITS | Common Stock | · | · | 15,000 | Disposed |
| Jan. 25, 2019 | MCRB | STOCK OPTION (RIGHT TO BUY) | Common Stock | $6.01 | Jan. 24, 2029 | 84,800 | Acquired |
| Jan. 30, 2018 | MCRB | STOCK OPTION (RIGHT TO BUY) | COMMON STOCK | $10.42 | Jan. 29, 2028 | 100,000 | Disposed |
| Jan. 30, 2018 | MCRB | STOCK OPTION (RIGHT TO BUY) | COMMON STOCK | $10.42 | Jan. 29, 2028 | 80,000 | Disposed |
| Jan. 26, 2018 | MCRB | RESTRICTED STOCK UNITS | COMMON STOCK | · | · | 10,000 | Disposed |
| Jan. 26, 2017 | MCRB | Restricted Stock Units | Common Stock | · | · | 50,000 | Acquired |
| Jan. 26, 2017 | MCRB | Stock Option (right to buy) | Common Stock | $9.89 | Jan. 25, 2027 | 60,000 | Acquired |
| June 1, 2016 | MCRB | Stock Option (right to buy) | Common Stock | $30.90 | May 31, 2026 | 100,000 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Compensation (DEF 14A)
Matched by name from proxy statements (DEF 14A) — verify against the filing.
| Fiscal year | Salary | Bonus | Stock awards | Option awards | Non-equity incentive | Pension change | Other | Total |
|---|---|---|---|---|---|---|---|---|
| 2025 | $512,900 | $166,667 | · | · | · | · | $10,166 | $1,136,023 |
| 2024 | $498,000 | · | · | · | $199,200 | · | $9,942 | $1,248,507 |
| 2020 | $450,000 | · | · | · | $261,000 | · | $8,550 | $1,437,260 |
Figures from the Summary Compensation Table of the company's proxy statement (DEF 14A). Compensation is not a recommendation.