Filing Details
- Accession Number:
- 0000950170-25-014866
- Form Type:
- 4
- Zero Holdings:
- No
- Publication Time:
- 2025-02-05 21:04:51
- Reporting Period:
- 2025-02-03
- Accepted Time:
- 2025-02-05 21:04:51
- SEC Url:
- Form 4 Filing
Issuer
| Cik | Name | Symbol | Sector (SIC) | IRS No |
|---|---|---|---|---|
| 1701108 | Spero Therapeutics Inc. | SPRO | Pharmaceutical Preparations (2834) | 000000000 |
Insiders
| Cik | Name | Reported Address | Insider Title | Director | Officer | Large Shareholder | Other |
|---|---|---|---|---|---|---|---|
| 1798155 | Timothy Keutzer | C/O Spero Therapeutics, Inc. 675 Massachusetts Avenue, 14Th Floor Cambridge MA 02139 | Chief Operating Officer | No | No | No | No |
Reported Non-Derivative Transactions
| Sec. Name | Acquisiton - Disposition | Date | Amount | Price | Remaning Holdings | Equity Swap Involved | Form Type | Code | Nature of Ownership | Explanation |
|---|---|---|---|---|---|---|---|---|---|---|
| Common Stock | Acquisiton | 2025-02-03 | 266,139 | $0.00 | 797,976 | No | 4 | A | Direct | |
| Common Stock | Disposition | 2025-02-05 | 3,974 | $0.78 | 794,002 | No | 4 | S | Direct | |
| Common Stock | Disposition | 2025-02-05 | 27,643 | $0.78 | 766,359 | No | 4 | S | Direct | |
| Common Stock | Disposition | 2025-02-05 | 24,920 | $0.78 | 741,439 | No | 4 | S | Direct |
| Equity Swap Involved | Form Type | Code | Nature of Ownership | Explanation |
|---|---|---|---|---|
| No | 4 | A | Direct | |
| No | 4 | S | Direct | |
| No | 4 | S | Direct | |
| No | 4 | S | Direct |
Footnotes
- Consists of restricted stock units ("RSUs"). Each RSU represents the right to receive one share of common stock upon vesting. The RSUs vest in four equal annual installments beginning on February 3, 2026, subject to the Reporting Person's continued service through the applicable vesting date.
- 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 RSUs that were granted to the Reporting Person on February 1, 2022.
- 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 RSUs that were granted to the Reporting Person on February 1, 2023.
- 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 RSUs that were granted to the Reporting Person on February 1, 2024.
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