Chen Tien-Szu
GM, ASE Inc. Chung-Li Branch
All tracked transactions
Curated subset of Chen Tien-Szu's SEC Form 4 filings. Routine 10b5-1 schedule sales are flagged inline and weighted less in the conviction score.
| Date | Ticker | Action | Value |
|---|---|---|---|
| Apr 20, 2026 | ASX | sell | $37.68M 80,000 × $471 |
| Apr 20, 2026 | ASX | sell | $23.35M 50,000 × $467 |
| Apr 20, 2026 | ASX | sell | $33.55M 72,000 × $466 |
| Apr 20, 2026 | ASX | sell | $152.55M 328,000 × $465.1067 |
| Apr 20, 2026 | ASX | sell | $37.68M 80,000 × $471 |
| Apr 20, 2026 | ASX | sell | $23.35M 50,000 × $467 |
| Apr 20, 2026 | ASX | sell | $33.55M 72,000 × $466 |
| Apr 20, 2026 | ASX | sell | $152.55M 328,000 × $465.1067 |
Method
Conviction score = logistic(role_weight × (buy_value − 0.2 × discretionary_sell_value)) mapped to −100..+100. CEOs and founders carry role_weight 0.95-1.0; directors 0.5; former executives 0.3. Routine 10b5-1 schedule sales are weighted down sharply — insiders file pre-arranged selling plans that trigger independent of their view of the stock, so they carry minimal signal. Open-market discretionary buys are rare and carry the heaviest weight.
Role weight: 0.40 (GM, ASE Inc. Chung-Li Branch).
Data sourced from SEC Form 4 filings via EDGAR. Curated subset (not every filing) — we prioritize CEO/CFO/Chair/10%-owner transactions and material $ amounts over noise.
Tickers Chen has traded
SEC Form 4 filings disclose trades by corporate insiders within 2 business days. Conviction scoring is a synthesis — not investment advice.