Chang Yahui is a Chief Operating Officer who has filed 3 SEC Form 4 insider transaction reports across 1 company. Form 4 disclosures are required by law whenever a corporate insider buys, sells, or receives company stock.

How many insider transactions has Chang Yahui filed?

Chang Yahui has 3 SEC Form 4 transactions on record at EdgarLookup, sourced from the SEC EDGAR public database. These span 1 company.

Chang Yahui

Insider transactions at 1 company

This page shows all SEC Form 4 filings attributed to Chang Yahui. Form 4 disclosures are required whenever a corporate insider — director, officer, or 10%+ shareholder — buys, sells, or receives company stock. Each row represents a separate reported transaction. All data is sourced directly from the SEC EDGAR public database.

TYGO

Company	Title	Type	Shares	Price	Value	Date
TYGO	Chief Operating Officer	Tax Withholding	17,155	$2.68	$45,975	Oct 7, 2025
TYGO	Chief Operating Officer	Award / Grant	78,149	—	—	Aug 1, 2025
TYGO	Chief Operating Officer	Award / Grant	144,000	—	—	Nov 11, 2024