InsidersTradesSigma
Total declarations
Company
▲ Purchases (0 ops.)
▼ Sales (0 ops.)
Insider track record
Board DirectorDisclosed buys
0
Disclosed sells
0
T+90 hit rate
0%
T+90 mean return
-8.7%
Across 3 buy signals with a settled T+90 return. Return basis: close on the day after publication.
Signal history
Browse the detailed record of transactions filed by TESTONI LOUIS L, Director. Insider active across 1 company, notably Koppers Holdings Inc.. Aggregated, 6 reports have been published. Activity tracked since 6 May 2021. The latest transaction was disclosed on 2 May 2025 (Levée d'options). Regulator: SEC (Form 4). The full history is openly available.
Declarations6 total
17 shares0Common StockSEC:0000950170-25-064688:0
20 shares0Common StockSEC:0000950170-24-053668:0
37 shares0Common StockSEC:0001209191-23-027979:0
4,326 shares0Common StockSEC:0001127602-22-013581:0
3,078 shares0Common StockSEC:0001209191-21-030852
3,078 shares0Common StockSEC:0001209191-21-030852:0
6 of 6 declarations
About TESTONI LOUIS L
Louis L. Testoni is a Board Member at Koppers Holdings Inc. As a board member, he contributes to the governance and strategy of the company. Louis brings his expertise to help guide strategic decisions and ensure compliance with regulations.
