Latest filing published 18 Sept 2026 for Magnite, INC., €856k.
Filing timeline
BuySaleInsider track record
Not enough buy signals with a settled T+90 horizon to measure a track record yet.
Douglas S. Knopper: trading record in brief
Douglas S. Knopper, listed as board member, has filed trades across 2 companies (mainly through SEC (Form 4)), most often in Magnite, Inc. and Telaria, Inc. We count 18 filings; the first trade dates from 10 June 2019 and the latest from 17 September 2026.
No open-market purchase appears, only 8 sales worth €2.2M. Besides market trades, the filings include 7 share grants and 2 option exercises. Since January 2026: no purchases and 2 sales on the market.
On 18 September 2026 came the latest disclosure, an open-market sale for €856k in Magnite, Inc. The median gap between a trade and its publication by SEC (Form 4) is 2 days. For comparison, the SEC allows two business days to file a Form 4. Selling is not necessarily a view on the stock: liquidity needs and diversification are common motives. This summary is built from SEC (Form 4) disclosures alone and does not predict where the share price will go.
Companies and markets linked to Douglas S. Knopper
Open company profiles for insider transactions, fundamentals and analyst consensus when available.
- 37,337 shares@ US$26.28Common StockSEC:0001350876-26-000005:0
- 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
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