| Insider | Role | Shares | Value | Buys | Sells |
|---|---|---|---|---|---|
| Date | Ticker | Insider | Role | Type | Shares | Price | Value | Chg% | SEC |
|---|---|---|---|---|---|---|---|---|---|
| Insider | Role | Shares | Value | Buys | Sells |
|---|---|---|---|---|---|
| Date | Ticker | Insider | Role | Type | Shares | Price | Value | Chg% | SEC |
|---|---|---|---|---|---|---|---|---|---|
Over the past 90 days, insiders at Seres Therapeutics, Inc. (MCRB) have been net sellers, shedding 490 shares worth roughly $2K on balance.
Counted by filing, the last 12 months brought no open-market purchases and 16 sales by 5 insiders worth about $55K. The 12 months before that brought no open-market purchases and 18 sales by 5 insiders worth about $37K.
15 of the 16 sales in the last 12 months were made under a Rule 10b5-1 trading plan; the rest were not.
No insider has bought MCRB shares in the open market in the last two years. The last purchase on record was by Noubar Afeyan on June 18, 2019.
| Role | Insider | Shares | Value | 30d |
|---|---|---|---|---|
| Dir | 12.5K | $24.5K | - | |
| Other | 8.7K | $17.0K | - | |
| Other | 8.6K | $16.8K | - | |
| Other | 8.1K | $15.9K | - | |
| Other | 8.0K | $15.7K | - |
Buys and sells only
| Date | Insider | Role | Type | Shares | Price | Value | Chg% | 3M | 12M | SEC |
|---|---|---|---|---|---|---|---|---|---|---|
| Aug 17, 2026 | Kelly Brady | See Remarks | Sale+OE10b5-1 | 64 | $4.55 | $291.20 | -0.7% | - | - | |
| Aug 17, 2026 | Thomas DesRosier69 | See Remarks | Sale+OE10b5-1 | 82 | $4.55 | $373.10 | -1.0% | - | - | |
| Aug 17, 2026 | Matthew R Henn69 | See Remarks | Sale+OE10b5-1 | 81 | $4.55 | $368.55 | -1.0% | - | - | |
| Aug 17, 2026 | Eric D. Shaff69 | Director | Sale+OE10b5-1 | 263 | $4.55 | $1,196.65 | -2.1% | - | - | |
| May 18, 2026 | Kelly Brady | See Remarks | Sale+OE | 59 | $7.53 | $444.27 | -0.7% | -40.6% | - | |
| May 18, 2026 | Thomas DesRosier69 | See Remarks | Sale+OE10b5-1 | 79 | $7.53 | $594.87 | -1.0% | -40.6% | - | |
| May 18, 2026 | Matthew R Henn69 | See Remarks | Sale+OE10b5-1 | 77 | $7.53 | $579.81 | -1.0% | -40.6% | - | |
| May 18, 2026 | Eric D. Shaff69 | Director | Sale+OE10b5-1 | 259 | $7.53 | $1,950.27 | -2.1% | -40.6% | - | |
| Feb 15, 2026 | Teresa L. Young72 | See Remarks | Sale+OE10b5-1 | 75 | $8.47 | $635.25 | -0.9% | -7.7% | - | |
| Feb 15, 2026 | Matthew R Henn69 | See Remarks | Sale+OE10b5-1 | 89 | $8.47 | $753.83 | -1.1% | -7.7% | - |