| 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 |
|---|---|---|---|---|---|---|---|---|---|
Spero Therapeutics, Inc. (SPRO) has 10 insiders with recent SEC Form 4 filings, including 0 buys and 14 sells. SPRO is classified in the Biotechnology industry within the Health Care sector.
| Role | Insider | Shares | Value | 30d |
|---|---|---|---|---|
| Other | 986.9K | $2.53M | -25,240 | |
| COO | 742.5K | $1.90M | - | |
| Dir | 703.3K | $1.80M | - | |
| Dir | 91.5K | $234.1K | - | |
| Dir | 75.0K | $192.0K | - |
Buys and sells only
| Date | Insider | Role | Type | Shares | Price | Value | Chg% | 3M | 12M | SEC |
|---|---|---|---|---|---|---|---|---|---|---|
| May 4, 2026 | Rajavelu Esther | See Remarks | Sell | 25,240 | $2.51 | $63,352.40 | -2.5% | - | - | |
| Feb 6, 2026 | Rajavelu Esther | See Remarks | Sell | 87,917 | $2.36 | $207,484.12 | -4.1% | - | - | |
| Feb 6, 2026 | Keutzer Timothy50 | Chief Operating Officer | Sell | 18,652 | $2.36 | $44,018.72 | -2.5% | - | - | |
| Feb 4, 2026 | Keutzer Timothy50 | Chief Operating Officer | Sell | 46,586 | $2.17 | $101,174.60 | -2.0% | +8.3% | - | |
| Feb 2, 2026 | Rajavelu Esther | See Remarks | Sell | 18,442 | $2.20 | $40,572.40 | -1.6% | +11.2% | - | |
| Nov 7, 2025 | Rajavelu Esther | See Remarks | Sell | 40,270 | $2.37 | $95,439.90 | -4.4% | -6.5% | - | |
| Aug 28, 2025 | Mahadevia Ankit58 | Director | Sell | 6,572 | $1.97 | $12,946.84 | -0.9% | +16.5% | - | |
| Aug 28, 2025 | Keutzer Timothy50 | Chief Operating Officer | Sell | 1,695 | $1.97 | $3,339.15 | -0.2% | +16.5% | - | |
| Feb 5, 2025 | Mahadevia Ankit58 | Director | Sell | 69,219 | $0.78 | $53,990.82 | -4.6% | -32.7% | +162.3% | |
| Feb 5, 2025 | Rajavelu Esther | CFO &Cbo | Sell | 20,689 | $0.78 | $16,137.42 | -2.8% | -32.7% | +162.3% |