InsidersTradesSigma
Total declarations
Companies
▲ Purchases (0 ops.)
▼ Sales (0 ops.)
Insider track record
CEODisclosed buys
0
Disclosed sells
0
T+90 hit rate
0%
T+90 mean return
-18.2%
Across 5 buy signals with a settled T+90 return. Return basis: close on the day after publication.
Signal history
Explore the detailed record of transactions filed by Apostolou Stephanie L, Directrice Générale des Affaires Juridiques. Insider active across 2 companies, notably Koppers Holdings Inc.. Cumulatively, 19 filings have been published. History available since 4 January 2022. The latest transaction was filed on 26 February 2026 (Attribution). Regulator: SEC (Form 4). The full history is accessible without signup.
Companies and markets linked to Apostolou Stephanie L
Open company profiles for insider transactions, fundamentals and analyst consensus when available.
Declarations19 total
7,223 shares0Common StockSEC:0001315257-26-000014:0
9,876 shares0Common StockSEC:0001806249-26-000002:0
13,628 shares0Common StockSEC:0000950170-25-002821:0
6,867 sharesCommon StockSEC:0000950170-25-002821:1
210 shares0Common StockSEC:0000950170-25-002821:2
5,690 shares@ US$31.7272.3% of flowCommon StockSEC:0000950170-25-002821:3
26 shares0Common StockSEC:0000950170-24-026130:0
4,284 shares0Common StockSEC:0000950170-24-003149:0
14 shares0Common StockSEC:0001209191-23-016831:0
798 shares@ US$37.5511.6% of flowCommon StockSEC:0001209191-23-016831:1
3 shares0Common StockSEC:0001209191-23-016831:2
134 shares@ US$35.461.8% of flowCommon StockSEC:0001209191-23-016831:3
14 shares0Common StockSEC:0001209191-23-002599:0
6,222 shares0Common StockSEC:0001209191-23-002069:0
3,514 sharesCommon StockSEC:0001209191-22-016989:0
801 shares@ US$28.960.0040% mcap60.2% of flowCommon StockSEC:0001209191-22-016594:0
45 shares@ US$28.490.0002% mcap3.3% of flowCommon StockSEC:0001209191-22-016297:0
429 shares@ US$33.270.0024% mcap36.5% of flowCommon StockSEC:0001209191-22-002526:0
3,204 shares0Common StockSEC:0001209191-22-002113:0
19 of 19 declarations
About Apostolou Stephanie L
Stephanie L. Apostolou is the General Counsel & Secretary at Koppers Holdings Inc. She oversees the legal and regulatory aspects of the company's operations, ensuring compliance and protecting the company's interests. Her role is essential in navigating the complex legal landscape in which the company operates.
