Updated Jul 16, 2026
Rajavelu Esther has filed 1 SEC Form 4 filing across 1 company in the last 90 days — selling. Lifetime open-market sales: $460K.
| Date | Ticker | Company | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-05-07 | SPRO | Spero Therapeutics, Inc. | S — Open-market sale | 25.2K | $2.51 | $63K |
| 2026-02-10 | SPRO | Spero Therapeutics, Inc. | S — Open-market sale | 50.8K | $2.36 | $120K |
| 2026-02-10 | SPRO | Spero Therapeutics, Inc. | S — Open-market sale | 37.1K | $2.36 | $88K |
| 2026-02-05 | SPRO | Spero Therapeutics, Inc. | S — Open-market sale | 18.4K | $2.20 | $41K |
| 2026-02-05 | SPRO | Spero Therapeutics, Inc. | A — Grant or award | 249.0K | $0.00 | |
| 2025-11-13 | SPRO | Spero Therapeutics, Inc. | S — Open-market sale | 40.3K | $2.37 | $95K |
| 2024-11-12 | SPRO | Spero Therapeutics, Inc. | S — Open-market sale | 17.2K | $1.30 | $22K |
| 2024-11-12 | SPRO | Spero Therapeutics, Inc. | S — Open-market sale | 23.4K | $1.31 | $31K |
Rajavelu Esther is a corporate insider — currently tracked as Insider of Spero Therapeutics, Inc. (SPRO). InsiderAlpha tracks every SEC Form 4 filing in real time.
1 primary Form 4 filings in the last 90 days, covering 1 company.
Recorded transactions: 0 open-market purchases () and 7 open-market sales ($460K) across all tracked filings.
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
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