Not enough buy signals with a settled T+90 horizon to measure a track record yet.
Signal history
No signal scores available.
Discover the detailed record of transactions filed by Lee John Tseng-Chung, Chief Executive Officer. Insider active across 3 companies, notably MKS Instruments INC. Cumulatively, 22 disclosures have been logged. Split: 0 buy · 4 sells. Total volume traded: €5.5m. History available since 9 May 2023. The latest transaction was disclosed on 14 August 2026 (Cession). Regulator: SEC (Form 4). The full history is openly available.
Companies and markets linked to Lee John Tseng-Chung
Open company profiles for insider transactions, fundamentals and analyst consensus when available.
Lee John Tseng-Chung is Directeur général at MKS Instruments INC, President & CEO at MKS INC, and a Director at COGNEX CORP. Across 21 filings, the sampled recent filings cover the period from 2016-02-12 to 2026-02-24 and show EUR 0 of buys and EUR 2,895,774 of sells, with the modal transaction nature listed as Levée d'options.