InsidersTradesSigma
Total declarations
Company
▲ Purchases (0 ops.)
▼ Sales (2 ops.)
Insider track record
Board DirectorDisclosed buys
0
Disclosed sells
2
Not enough buy signals with a settled T+90 horizon to measure a track record yet.
Signal history
Explore the complete record of transactions filed by Knopper Douglas S, Director. Officer active across 1 company, notably Magnite, INC.. Aggregated, 7 filings have been published. Split: 0 buy · 2 sells. Total volume traded: €982k. Activity tracked since 28 June 2021. The latest transaction was disclosed on 6 August 2026 (Cession). Regulator: SEC (Form 4). The full history is openly available.
Companies and markets linked to Knopper Douglas S
Open company profiles for insider transactions, fundamentals and analyst consensus when available.
Declarations7 total
37,337 shares@ US$22.720.029% mcap74.7% of flowCommon StockSEC:0001350876-26-000003:0
10,766 shares0Common StockSEC:0001415889-25-016024:0
14,061 shares0Common StockSEC:0001415889-24-016666:0
13,743 shares0Common StockSEC:0001209191-23-037913:0
16,489 shares0Common StockSEC:0001209191-22-035532:0
9,010 shares@ US$32.68100.0% of flowCommon StockSEC:0001209191-21-046563:0
3,936 shares0Common StockSEC:0001209191-21-044013:0
7 of 7 declarations
About Knopper Douglas S
Douglas S. Knopper is a Board Member at Magnite, Inc. He plays an important role in the governance of the company, bringing his experience in strategy and business development. His involvement is essential for guiding the board's decisions.
