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Wah-Hui Chu

CIK 1375492 · last filed 2023-03-06

Wah-Hui Chu is a corporate insider who has filed 52 SEC Form 4 insider transactions across 1 company since 2007. The most recent filing, for MTD, was dated Jul 10, 2023. Across all open-market trades the lifetime net is −$12.9M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $7.1M across reported positions.

"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.

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Disclosed Exposure

$7.06M

Companies

1

Total Filings

52

Lifetime Open-Market Net

-$12.94M

Holdings By Company

Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
Symbol Role Shares Price Disclosed Exposure Lifetime OM Net Filings Latest Filed
MTD Director 5,590 $1263.75 $7.06M -$12.94M 51 2023-03-06

Recent Filings

52 filings
Insider activity across all companies, newest first. Form 4 rows are post-trade confirmations (buys, sells, grants, exercises). Notice (144) rows are pre-trade notices of intent to sell restricted or control stock under Rule 144 — they may not all execute. Compare adjacent dates to see which notices became actual sales.
Filed Symbol Action Net Shares Net $ Link
2023-07-10 MTD Notice (144) −600 -$780.0K EDGAR
2023-03-06 MTD Mixed — -$361.5K EDGAR
2022-11-14 MTD Mixed — -$673.9K EDGAR
2022-08-19 MTD Mixed +163 -$16.0K EDGAR
2022-08-16 MTD Mixed +163 -$16.2K EDGAR
2022-08-03 MTD Mixed +245 -$23.6K EDGAR
2022-06-01 MTD Mixed +244 -$22.4K EDGAR
2022-05-23 MTD Mixed +400 -$38.1K EDGAR
2022-05-16 MTD Mixed +244 -$354.7K EDGAR
2021-11-08 MTD Grant (A) +30 $0 EDGAR
Showing 1–10 of 52
Page 1 of 6
Form 4 codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.