Sign In
Buy SPRO
Spero Therapeutics Stock Insider Power
Based on the 100 latest insides trades, we have calculated the insider power to be negative at -37.48. In total, the insiders bought 5.69M and sold 1.25M SPRO shares in the last 100 trades. The insider score can be negative despite buy/sell ratio being positive. The score focuses on the quality of the trades.
Insider Power
|
-37.48 |
| ● Buy | 5.69M shares |
| ● Sell | 1.25M shares |
|
50% Buy Activity
Moderate Positive Correlation
|
|
Historical Insider Trades
| Date | Type | Person | Role | Amount |
|---|---|---|---|---|
|
Jun 12, 2025 Buy |
Tregoning Kathleen Director |
20 000 Value: $57.8K |
||
|
Jun 12, 2025 Buy |
Thomas Frank E Director |
20 000 Value: $57.8K |
||
|
Jun 12, 2025 Buy |
Smith Cynthia Director |
20 000 Value: $57.8K |
||
|
Jun 12, 2025 Buy |
Pottage John C Jr Director |
20 000 Value: $57.8K |
||
|
Jun 12, 2025 Buy |
Vink Patrick V.j.j. Director |
20 000 Value: $57.8K |
||
|
Jun 12, 2025 Buy |
Jackson Scott Thomas Director |
20 000 Value: $57.8K |
||
|
Jun 12, 2025 Buy |
Deshpande Milind Director |
20 000 Value: $57.8K |
||
|
Jun 12, 2025 Buy |
Mahadevia Ankit Director |
20 000 Value: $57.8K |
||
|
May 02, 2025 Buy |
Rajavelu Esther See Remarks |
185 000 Value: $119.7K |
||
|
May 02, 2025 Buy |
Rajavelu Esther See Remarks |
185 000 Value: $119.7K |
||
|
Feb 05, 2025 Sell |
Keutzer Timothy Chief Operating Officer |
3 974 Value: $3K |
||
|
Feb 05, 2025 Sell |
Keutzer Timothy Chief Operating Officer |
27 643 Value: $21.6K |
||
|
Feb 05, 2025 Sell |
Keutzer Timothy Chief Operating Officer |
24 920 Value: $19.4K |
||
|
Feb 05, 2025 Sell |
Rajavelu Esther CFO & Cbo |
20 689 Value: $16.1K |
||
|
Feb 05, 2025 Sell |
Shukla Sath CEO & President |
6 139 Value: $5K |
||
|
Feb 05, 2025 Sell |
Shukla Sath CEO & President |
42 786 Value: $33.4K |
||
|
Feb 05, 2025 Sell |
Shukla Sath CEO & President |
106 408 Value: $83.0K |
||
|
Feb 05, 2025 Sell |
Mahadevia Ankit Director |
13 959 Value: $10.9K |
||
|
Feb 05, 2025 Sell |
Mahadevia Ankit Director |
55 260 Value: $43.1K |
||
|
Feb 05, 2025 Sell |
Mahadevia Ankit Director |
55 260 Value: $43.1K |
||
|
Feb 05, 2025 Sell |
Mahadevia Ankit Director |
13 959 Value: $10.9K |
||
|
Feb 05, 2025 Sell |
Shukla Sath CEO & President |
106 408 Value: $83.0K |
||
|
Feb 05, 2025 Sell |
Shukla Sath CEO & President |
42 786 Value: $33.4K |
||
|
Feb 05, 2025 Sell |
Shukla Sath CEO & President |
6 139 Value: $5K |
||
|
Feb 05, 2025 Sell |
Rajavelu Esther CFO & Cbo |
20 689 Value: $16.1K |
About Insider Power
Insider Power is a proprietary algorithm developed by StockInvest.us to evaluate the significance of insider transactions. The calculation considers the size, type, and timing of transactions, as well as the insider’s role within the company.
It is important to note that, in general, there is little to no correlation between insider transactions and short-term stock price movements. In one of our studies, only 0.22%* of stocks with insider activity showed a measurable correlation — and even then, it was unclear whether the effect was caused by insider actions or simply by the stock’s broader trend.
While our algorithms are designed to highlight potentially meaningful signals, these cannot be regarded as statistically significant on their own. Insider trading activity should therefore be seen as informative rather than as direct trading guidance. The Insider Power metric was created to present this information in a clearer and more accessible way, helping investors better understand the possible context of insider activity.
* October 6th, 2025 - Tested on 5562 stocks
