Spero Therapeutics, Inc. - SPRO
Insiders (Form 4) · last 180 days · showing up to 200 transactions
· Form 144 is shown in the SEC filings tab
· Updating…
Visible: 0
Transaction codes:
P = Open-market purchase ·
S = Open-market sale ·
A = Grant/award ·
M = Exercise/conversion of derivative ·
G = Gift ·
F = Tax withholding ·
J = Other ·
A/D:
A = Acquired (buy/receive) ·
D = Disposed (sell/give)
| Filed | Owner | Title | Code | A/D | Shares | Price | Value | Shares after | SEC |
|---|---|---|---|---|---|---|---|---|---|
| Aug 06, 2026 | Chief Medical Officer | A | A | 324,675.0 | 0.0 | 0.0 | 324,675.0 | View | |
| Aug 06, 2026 | Chief Medical Officer | A | A | 162,311.0 | 0.0 | 0.0 | 162,311.0 | View | |
| Jun 25, 2026 | — | A | A | 20,000.0 | 0.0 | 0.0 | 20,000.0 | View | |
| Jun 25, 2026 | — | A | A | 10,000.0 | 0.0 | 0.0 | 101,454.0 | View | |
| Jun 25, 2026 | — | A | A | 20,000.0 | 0.0 | 0.0 | 20,000.0 | View | |
| Jun 25, 2026 | — | A | A | 10,000.0 | 0.0 | 0.0 | 85,000.0 | View | |
| Jun 25, 2026 | — | A | A | 20,000.0 | 0.0 | 0.0 | 20,000.0 | View | |
| Jun 25, 2026 | — | A | A | 10,000.0 | 0.0 | 0.0 | 85,000.0 | View | |
| Jun 25, 2026 | — | A | A | 20,000.0 | 0.0 | 0.0 | 20,000.0 | View | |
| Jun 25, 2026 | — | A | A | 10,000.0 | 0.0 | 0.0 | 85,000.0 | View | |
| Jun 25, 2026 | — | A | A | 20,000.0 | 0.0 | 0.0 | 20,000.0 | View | |
| Jun 25, 2026 | — | A | A | 10,000.0 | 0.0 | 0.0 | 85,000.0 | View | |
| Jun 25, 2026 | — | A | A | 20,000.0 | 0.0 | 0.0 | 20,000.0 | View | |
| Jun 25, 2026 | — | A | A | 10,000.0 | 0.0 | 0.0 | 85,000.0 | View | |
| Jun 25, 2026 | — | A | A | 20,000.0 | 0.0 | 0.0 | 20,000.0 | View | |
| Jun 25, 2026 | — | A | A | 10,000.0 | 0.0 | 0.0 | 85,000.0 | View | |
| May 06, 2026 | See Remarks | S | D | 25,240.0 | 2.51 | 63,352.4 | 986,851.0 | View |