Timothy Keutzer insider trades: Spero Therapeutics (SPRO) stock sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where Timothy reports to the SEC
Open-market buys and sales
8 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Feb 6, 2026 | SPRO | ↓ Sell | 18,652 | $2.36 | $44K | Direct | Feb 9, 2026 (3d) |
| Feb 4, 2026 | SPRO | ↓ Sell | 46,586 | $2.17 | $101K | Direct | Feb 5, 2026 (1d) |
| Aug 28, 2025 | SPRO | ↓ Sell | 1,695 | $1.97 | $3K | Direct | Sep 3, 2025 (6d) |
| Feb 5, 2025 | SPRO | ↓ Sell | 56,537 | $0.78 | $44K | Direct | Feb 5, 2025 (0d) |
| Aug 27, 2024 | SPRO | ↓ Sell | 2,213 | $1.35 | $3K | Direct | Aug 29, 2024 (2d) |
| Feb 2, 2024 | SPRO | ↓ Sell | 30,971 | $1.36 | $42K | Direct | Feb 5, 2024 (3d) |
| Aug 28, 2023 | SPRO | ↓ Sell | 1,854 | $1.26 | $2K | Direct | Aug 30, 2023 (2d) |
| Feb 2, 2023 | SPRO | ↓ Sell | 3,394 | $1.86 | $6K | Direct | Feb 3, 2023 (1d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
Other SPRO insiders
Open-market trades in the last 12 months
About Timothy Keutzer's insider trades
Timothy Keutzer is Chief Operating Officer at Spero Therapeutics (SPRO). Since Feb 2, 2023, Timothy has reported no open-market purchases and 8 sales worth $246K on SEC Form 4. In the last 12 months: 2 sales ($145K).
Their filings also include grants and awards (8 filings). 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 SPRO insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.