Insider · CIK 0001435744
Thomas DesRosier
officer
Files at MCRB (Seres Therapeutics, Inc.). First filing Oct 29, 2024, latest Aug 19, 2025.
Track record
Not enough history
Fewer than three past buys with six months of prices.
Median 6-month excess
-
after past buys, n = 0
Hit rate
-
past buys that beat the index over 6 months
Open-market trades
0 / 5
$0 bought, $8,740 sold
Where the trades landed
Last year at the company this insider has traded most, with each buy and sell on the bar it happened.
MCRB: Seres Therapeutics, Inc.
MCRBOct 9, 2026 · close 2.71
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value. Click a marked bar to open the signal.Charts by TradingView Lightweight Charts™
Signals
This insider’s open-market buys and sells, scored.
| Score | Company | Value | Holdings | Price context | Filed |
|---|---|---|---|---|---|
| 0Weak | Seres Therapeutics, Inc. | $1,265 76 shares | -1% | +161% from low-24% from high | |
| 0Weak | Seres Therapeutics, Inc. | $575 79 shares | -1% | +9% from low-68% from high | |
| 0Weak | Seres Therapeutics, Inc. | $3,485 4,300 shares | -3% | - | |
| 0Weak | Seres Therapeutics, Inc. | $475 878 shares | -1% | - | |
| 0Weak | Seres Therapeutics, Inc. | $2,939 4,259 shares | -3% | - |
Transactions
Every row this insider has filed, newest first.
| Date | Company | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|---|
| Aug 15, 2025 | MCRB Seres Therapeutics, Inc. | MOption exercise Common Stock10b5-1 | +133 | - | - | 7,420 | Aug 19, 2025 |
| Aug 15, 2025 | MCRB Seres Therapeutics, Inc. | MOption exercise Common Stock10b5-1 | +111 | - | - | 7,531 | Aug 19, 2025 |
| Aug 18, 2025 | MCRB Seres Therapeutics, Inc. | SOpen-market sale Common Stock10b5-1 | -76 | $16.65 | $1,265 | 7,455 | Aug 19, 2025 |
| Aug 15, 2025 | MCRB Seres Therapeutics, Inc. | MOption exercise Restricted Stock Unitsderivative10b5-1 | -133 | $0.00 | $0 | 796 | Aug 19, 2025 |
| Aug 15, 2025 | MCRB Seres Therapeutics, Inc. | MOption exercise Restricted Stock Unitsderivative10b5-1 | -111 | $0.00 | $0 | 1,113 | Aug 19, 2025 |
| May 15, 2025 | MCRB Seres Therapeutics, Inc. | MOption exercise Common Stock10b5-1 | +133 | - | - | 7,255 | May 19, 2025 |
| May 15, 2025 | MCRB Seres Therapeutics, Inc. | MOption exercise Common Stock10b5-1 | +111 | - | - | 7,366 | May 19, 2025 |
| May 15, 2025 | MCRB Seres Therapeutics, Inc. | SOpen-market sale Common Stock10b5-1 | -79 | $7.28 | $575 | 7,287 | May 19, 2025 |
| May 15, 2025 | MCRB Seres Therapeutics, Inc. | MOption exercise Restricted Stock Unitsderivative10b5-1 | -133 | $0.00 | $0 | 929 | May 19, 2025 |
| May 15, 2025 | MCRB Seres Therapeutics, Inc. | MOption exercise Restricted Stock Unitsderivative10b5-1 | -111 | $0.00 | $0 | 1,224 | May 19, 2025 |
| Feb 15, 2025 | MCRB Seres Therapeutics, Inc. | MOption exercise Common Stock10b5-1 | +2,657 | - | - | 137,849 | Feb 19, 2025 |
| Feb 15, 2025 | MCRB Seres Therapeutics, Inc. | MOption exercise Common Stock10b5-1 | +8,907 | - | - | 146,756 | Feb 19, 2025 |
| Feb 18, 2025 | MCRB Seres Therapeutics, Inc. | SOpen-market sale Common Stock10b5-1 | -4,300 | $0.81 | $3,485 | 142,456 | Feb 19, 2025 |
| Feb 15, 2025 | MCRB Seres Therapeutics, Inc. | MOption exercise Restricted Stock Unitsderivative10b5-1 | -2,657 | $0.00 | $0 | 21,250 | Feb 19, 2025 |
| Feb 15, 2025 | MCRB Seres Therapeutics, Inc. | MOption exercise Restricted Stock Unitsderivative10b5-1 | -8,907 | $0.00 | $0 | 26,718 | Feb 19, 2025 |
| Feb 7, 2025 | MCRB Seres Therapeutics, Inc. | AGrant or award Stock Option (Right to Buy)derivative | +650,000 | $0.00 | $0 | 650,000 | Feb 11, 2025 |
| Nov 15, 2024 | MCRB Seres Therapeutics, Inc. | MOption exercise Common Stock10b5-1 | +2,656 | - | - | 136,070 | Nov 19, 2024 |
| Nov 18, 2024 | MCRB Seres Therapeutics, Inc. | SOpen-market sale Common Stock10b5-1 | -878 | $0.54 | $475 | 135,192 | Nov 19, 2024 |
| Nov 15, 2024 | MCRB Seres Therapeutics, Inc. | MOption exercise Restricted Stock Unitsderivative10b5-1 | -2,656 | $0.00 | $0 | 23,907 | Nov 19, 2024 |
| Oct 27, 2024 | MCRB Seres Therapeutics, Inc. | MOption exercise Common Stock10b5-1 | +13,500 | $0.00 | $0 | 137,673 | Oct 29, 2024 |
| Oct 28, 2024 | MCRB Seres Therapeutics, Inc. | SOpen-market sale Common Stock10b5-1 | -4,259 | $0.69 | $2,939 | 133,414 | Oct 29, 2024 |
| Oct 27, 2024 | MCRB Seres Therapeutics, Inc. | MOption exercise Restricted Stock Unitsderivative10b5-1 | -13,500 | $0.00 | $0 | 0 | Oct 29, 2024 |
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.