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Total Value
$43.0K
Filing Date
Jun 25, 2026
1 transaction
Trade Summary
On Jun 23, 2026, Jackson Scott Thomas, Insider, reported $43.0K of Spero Therapeutics, Inc. (SPRO) across 1 transaction. The filing covers Common Stock and reflects balanced net activity of $0. Reported prices ranged from $2.15. Insider transactions are sourced from SEC Form 4 disclosures and should be reviewed alongside company fundamentals and the insider's broader trading history.
Company Information
- Company Name
- Spero Therapeutics, Inc.
- Ticker Symbol
- SPRO
- CIK
- 0001701108
Insider Information
- Role
- Insider
- Location
- CAMBRIDGE, MA
Filing Details
- Filing Date
- Jun 25, 2026
- Transaction Date
- Jun 23, 2026
- Accession Number
- 0001193125-26-283202
- Form Type
- 4
Non-Derivative Transactions
| Date | Security | Shares | Price | Type | Value |
|---|---|---|---|---|---|
| Jun 23, 2026 | Common Stock | 10,000 | — | Grant/Award | — |
Derivative Transactions
| Date | Security | Shares | Exercise Price | Type | Value |
|---|---|---|---|---|---|
| Jun 23, 2026 | SPRO derivative | 20,000 | $2.15 | Grant/Award | $43.0K |
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Footnotes
- (F1)Consists of restricted stock units ("RSUs"). Each RSU represents the right to receive one share of common stock upon vesting. The RSUs vest on June 23, 2027, subject to the Reporting Person's continued service through the applicable vesting date.
- (F2)The shares underlying this option will vest and become exercisable in full on June 23, 2027 subject to the Reporting Person's continued service as a director through the vesting date.