Rajavelu Esther (CIK 1903716) reported 7 SEC Form 4 insider transactions across 1 companies over the past 18 months (most recent 2026-05-06). Recent activity: Sell SPRO (25,240 shares), Sell SPRO (37,101 shares), Sell SPRO (50,816 shares), Buy SPRO (249,000 shares), Sell SPRO (18,442 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-05-06 | Spero Therapeutics, Inc. (SPRO) | Chief Executive Officer, Chief Financial Officer and Chief Business Officer | Sell | 25,240 | $63,352 |
| 2026-02-09 | Spero Therapeutics, Inc. (SPRO) | Chief Executive Officer, Chief Financial Officer and Chief Business Officer | Sell | 37,101 | $87,558 |
| 2026-02-09 | Spero Therapeutics, Inc. (SPRO) | Chief Executive Officer, Chief Financial Officer and Chief Business Officer | Sell | 50,816 | $119,926 |
| 2026-02-04 | Spero Therapeutics, Inc. (SPRO) | Chief Executive Officer, Chief Financial Officer and Chief Business Officer | Buy | 249,000 | $0 |
| 2026-02-04 | Spero Therapeutics, Inc. (SPRO) | Chief Executive Officer, Chief Financial Officer and Chief Business Officer | Sell | 18,442 | $40,572 |
| 2025-11-12 | Spero Therapeutics, Inc. (SPRO) | Chief Executive Officer, Chief Financial Officer and Chief Business Officer | Sell | 40,270 | $95,440 |
| 2025-05-06 | Spero Therapeutics, Inc. (SPRO) | Chief Executive Officer, Chief Financial Officer and Chief Business Officer | Buy | 185,000 | $0 |
来源：SEC Form 4 申报文件 · 截至 2026-05-06