Eric D. Shaff insider trades: Seres Therapeutics (MCRB) stock sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where Eric reports to the SEC
Open-market buys and sales
19 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| May 18, 2026 | MCRB | ↓ Sell | 259 | $7.53 | $2K | Direct | May 19, 2026 (1d) |
| Feb 15, 2026 | MCRB | ↓ Sell | 259 | $8.47 | $2K | Direct | Feb 18, 2026 (3d) |
| Nov 15, 2025 | MCRB | ↓ Sell | 217 | $17.30 | $4K | Direct | Nov 18, 2025 (3d) |
| Aug 18, 2025 | MCRB | ↓ Sell | 217 | $16.65 | $4K | Direct | Aug 19, 2025 (1d) |
| May 16, 2025 | MCRB | ↓ Sell | 220 | $7.28 | $2K | Direct | May 19, 2025 (3d) |
| Feb 18, 2025 | MCRB | ↓ Sell | 12,726 | $0.81 | $10K | Direct | Feb 19, 2025 (1d) |
| Nov 18, 2024 | MCRB | ↓ Sell | 2,505 | $0.54 | $1K | Direct | Nov 19, 2024 (1d) |
| Oct 28, 2024 | MCRB | ↓ Sell | 8,748 | $0.69 | $6K | Direct | Oct 29, 2024 (1d) |
| Aug 16, 2024 | MCRB | ↓ Sell | 2,518 | $0.84 | $2K | Direct | Aug 19, 2024 (3d) |
| May 15, 2024 | MCRB | ↓ Sell | 2,435 | $0.94 | $2K | Direct | May 17, 2024 (2d) |
| Feb 16, 2024 | MCRB | ↓ Sell | 11,549 | $1.08 | $12K | Direct | Feb 16, 2024 (0d) |
| Oct 30, 2023 | MCRB | ↓ Sell | 8,552 | $1.35 | $12K | Direct | Oct 31, 2023 (1d) |
| Jan 28, 2019 | MCRB | ↓ Sell | 4,378 | $5.75 | $25K | Direct | Jan 29, 2019 (1d) |
| Jan 26, 2018 | MCRB | ↓ Sell | 2,780 | $11.02 | $31K | Direct | Jan 30, 2018 (4d) |
| Jun 30, 2016 | MCRB | ↓ Sell | 4,533 | $29.54 | $134K | Direct | Jun 30, 2016 (0d) |
| Jun 28, 2016 | MCRB | ↓ Sell | 5,001 | $28.28 | $141K | Direct | Jun 29, 2016 (1d) |
| Apr 4, 2016 | MCRB | ↓ Sell | 6,568 | $28.85 | $189K | Direct | Apr 6, 2016 (2d) |
| Mar 31, 2016 | MCRB | ↓ Sell | 7,663 | $26.30 | $202K | Direct | Apr 4, 2016 (4d) |
| Mar 28, 2016 | MCRB | ↓ Sell | 5,473 | $24.07 | $132K | Direct | Mar 29, 2016 (1d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
Other MCRB insiders
Open-market trades in the last 12 months
About Eric D. Shaff's insider trades
Eric D. Shaff is an insider at Seres Therapeutics (MCRB). Since Mar 28, 2016, Eric has reported no open-market purchases and 19 sales worth $913K on SEC Form 4. In the last 12 months: 3 sales ($8K).
Their filings also include option exercises (20 filings), grants and awards (17 filings), shares returned to the company (1 filing). These aren't open-market trades and aren't counted above.
How to read insider trades
Officers, directors and owners of more than 10% of a company must report trades in its stock on SEC Form 4, usually within two business days. Purchases with their own money are the stronger signal: insiders sell for many reasons (taxes, diversification, a house), but buy for one. See every MCRB insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.