CHI-FOON CHAN

CIK 1249834 · Co-CEO · last filed 2026-07-02

CHI-FOON CHAN is a Co-CEO who has filed 128 SEC Form 4 insider transactions across 2 companies since 2007. The most recent filing, for PDFS, was dated Jul 2, 2026. Across all open-market trades the lifetime net is −$267.3M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $60.6M 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.

Disclosed Exposure

$60.62M

Companies

2

Total Filings

128

Lifetime Open-Market Net

-$267.32M

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
PDFS	Director	24,168	$44.59	$1.08M	$0	4	2026-07-02
SNPS	Co-CEO	155,120	$383.82	$59.54M	-$267.32M	124	2022-03-01

Recent Filings

128 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
2026-07-02	PDFS	Grant (A)	+2,689	$0	EDGAR
2025-07-02	PDFS	Grant (A)	+7,429	$0	EDGAR
2024-07-02	PDFS	Grant (A)	+4,382	$0	EDGAR
2024-01-03	PDFS	Grant (A)	+9,668	$0	EDGAR
2022-03-01	SNPS	Other (J)	+37	$9.8K	EDGAR
2022-02-23	SNPS	Sell (S)	−12,570	-$3.64M	EDGAR
2021-12-13	SNPS	Mixed	+6,040	-$2.11M	EDGAR
2021-12-10	SNPS	Mixed	+9,332	-$3.34M	EDGAR
2021-12-07	SNPS	Sell (S)	−12,318	-$4.23M	EDGAR
2021-09-02	SNPS	Other (J)	+84	$9.9K	EDGAR

Showing 1–10 of 128

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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.