Chao David Tsung-Hung

Director · WLK

As of 2026-09-16, Chao David Tsung-Hung has 10 Form 4 transactions on record across 1 company — 6 in the trailing 12 months.

Everything this person has disclosed to the SEC on Form 4 — across every company they file for — reconstructed from the public record. A filing history, not a tip sheet.

Reconstructed holdings

Direct: $154KIndirect: $0$154Kas of 2026-09-16
  • Direct $154K
  • Indirect $0
WLKdirect2,184 sh$154K

Reconstructed from this person's own Form 4 filings — the total each filing reported owning afterward, priced at the close on the as-of date shown. A filed position can lag the real one.

Direct and indirect holdings (e.g. through a trust or fund) are tagged separately, as filed.

Trades by company

WLK · 10 trades
2026-08-14: Award / grant, 2,184 sh ($0)2026-08-08: Option exercise, 2,168 sh ($0)2026-08-08: Option exercise, 2,168 sh2026-08-08: Option exercise, 2,168 sh2026-08-08: Option exercise, 2,168 sh2026-08-08: Option exercise, 2,168 sh2025-08-09: Option exercise, 1,128 sh ($0)2025-08-09: Option exercise, 1,128 sh2025-08-09: Option exercise, 1,128 sh2025-08-08: Award / grant, 2,168 sh ($0)

Filing ledger

DateCompanyActionShares @ priceValueOwnership ΔOwned afterFiling
10 award / exercise / gift records — not counted as purchases
DateCompanyActionSharesOwned afterFiling
2026-08-14WLKAward / grant2,1842,184Form 4
2026-08-08WLKOption exercise2,1682,168Form 4
2026-08-08WLKOption exercise2,16811,080Form 4
2026-08-08WLKOption exercise2,16811,080Form 4
2026-08-08WLKOption exercise2,16811,080Form 4
2026-08-08WLKOption exercise2,16811,080Form 4
2025-08-09WLKOption exercise1,1280Form 4
2025-08-09WLKOption exercise1,1288,912Form 4
2025-08-09WLKOption exercise1,1288,912Form 4
2025-08-08WLKAward / grant2,1682,168Form 4

Source: SEC Form 4 filings. Each row links to its original filing.

Research tool, not investment advice — historical frequencies, not recommendations. A product of Marovel Technologies LLC. Full terms.