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Spero Therapeutics, Inc.
SPRONasdaqCIK: 0001701108
Recent Form 4 activity at Spero Therapeutics, Inc. (SPRO) spans 15 filings across 10 insiders (all of them on the sell side). Purchases total $0 against $552.0K in sales — heavily weighted toward selling, for net sales of $552.0K. Rajavelu Esther is the most active by dollar volume, and the single largest transaction was $1.2M by Rajavelu Esther. All figures are drawn from official SEC Form 3, 4, and 5 disclosures and update as new filings arrive.
Total Volume
$2.8M
Purchases
$0
Sales
$552.0K
Unique Insiders
10
Recent Insider Trades
15 loaded
| Aug 6 | SPRO Spero Therapeutics, Inc. | Zack Debra | Insider | Grant | $500.0K |
| Aug 6 | SPRO Spero Therapeutics, Inc. | Zack Debra | Insider | Other | $0 |
| Jun 25 | SPRO Spero Therapeutics, Inc. | Pottage John C Jr | Insider | Grant | $43.0K |
| Jun 25 | SPRO Spero Therapeutics, Inc. | Smith Cynthia | Insider | Grant | $43.0K |
| Jun 25 | SPRO Spero Therapeutics, Inc. | Deshpande Milind | Insider | Grant | $43.0K |
| Jun 25 | SPRO Spero Therapeutics, Inc. | THOMAS FRANK E | Insider | Grant | $43.0K |
| Jun 25 | SPRO Spero Therapeutics, Inc. | Tregoning Kathleen | Insider | Grant | $43.0K |
| Jun 25 | SPRO Spero Therapeutics, Inc. | VINK PATRICK V.J.J. | Insider | Grant | $43.0K |
| Jun 25 | SPRO Spero Therapeutics, Inc. | Jackson Scott Thomas | Insider | Grant | $43.0K |
| May 6 | SPRO Spero Therapeutics, Inc. | Rajavelu Esther | Insider | Sell | $63.4K |
| Feb 9 | SPRO Spero Therapeutics, Inc. | Rajavelu Esther | Insider | Sell | $207.5K |
| Feb 9 | SPRO Spero Therapeutics, Inc. | Keutzer Timothy | Insider | Sell | $44.0K |
| Feb 5 | SPRO Spero Therapeutics, Inc. | Keutzer Timothy | Insider | Sell | $101.2K |
| Feb 4 | SPRO Spero Therapeutics, Inc. | Rajavelu Esther | Insider | Sell | $40.6K |
| Nov 12 | SPRO Spero Therapeutics, Inc. | Rajavelu Esther | Insider | Sell | $95.4K |
15 filings