HSIEH Wen Hsuan
SEC Form 4 insider trading activity
HSIEH Wen Hsuan has filed 3 SEC Form 4 filings (5 transaction rows) across 2 companies, including AMBQ, AMPX, with disclosures dating back to 2026. 3 of those filings fall inside the rolling window. Most recent filing: Jun 10, 2026.
On the most recent filing, HSIEH Wen Hsuan is listed as Director at Amprius Technologies, Inc. Inside the rolling window, HSIEH Wen Hsuan reported no open-market purchases and 1 open-market sale totaling $7.6M in AMPX.
Companies traded
Other insiders at AMBQ
Insider Buying
$0
reported purchases (SEC code P)
Insider Selling
$7.6M
reported sales (SEC code S)
Companies
2
in the rolling window
Frequently asked questions
How many SEC Form 4 filings has HSIEH Wen Hsuan made?
HSIEH Wen Hsuan has filed 3 SEC Form 4 filings (5 transaction rows) across 2 companies, including AMBQ, AMPX since 2026.
Which companies does HSIEH Wen Hsuan trade?
HSIEH Wen Hsuan has filed SEC Form 4 disclosures for 2 companies, including AMBQ, AMPX.
When was HSIEH Wen Hsuan's most recent SEC Form 4 filing?
HSIEH Wen Hsuan's most recent SEC Form 4 filing on Tracefour is dated Jun 10, 2026.
What is HSIEH Wen Hsuan's total buy and sell value in the current window?
Inside the rolling retention window, HSIEH Wen Hsuan bought $0 and sold $7.6M based on SEC Form 4 filings.
What was HSIEH Wen Hsuan's largest disclosed transaction?
The largest disclosed transaction in the current window is a sale of 413,146 AMPX shares on 2026-03-12, worth $7.6M, per SEC Form 4 filings.