Form 4 for SPRO Spero Therapeutics, Inc.
Accepted 2025-09-03 00:00:00 ET · period of report 2025-08-28 · accession 0000950170-25-112659 · SEC index · Original document
Summary rows
Aggregated the way they appear in lists: one row per insider, transaction code and security table.
| X | Filed | Traded | Ticker | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2025-09-03 | 2025-08-28 | SPRO | Keutzer Timothy | COO | S - Sale | $1.97 | -1,695 | 739.7K | -0.2% | -$3,339 |
Purchase Sale Sale after option exercise All abbreviations
Every reported transaction
| # | Table | Security | Date | Code | A/D | Shares | Price | Owned after | Own | Exercise / expiry | Underlying | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Common | Common Stock | 2025-08-28 | S | D | 1,695 | $1.97 | 739,744 | D | — | — | (F1) The reported transaction is a sale of common stock effected to cover tax withholding obligations pursuant to a "sell to cover" provision included in each RSU Agreement in connection with the vesting of restricted stock units ("RSUs") that were granted to the Reporting Person on August 26, 2021. |