ZHANG KER
SEC Form 4 insider trading activity
ZHANG KER has filed 3 SEC Form 4 filings (5 transaction rows) across 1 company, with disclosures dating back to 2026. 3 of those filings fall inside the rolling window. Most recent filing: Sep 15, 2026.
On the most recent filing, ZHANG KER is listed as Director at Ambiq Micro, Inc. Inside the rolling window, ZHANG KER reported no open-market purchases and 2 open-market sales totaling $645K in AMBQ. The largest disclosed transaction in the window is a sale of 10,000 AMBQ shares on Sep 11, 2026, worth $634K.
Companies traded
Other insiders at AMBQ
Insider Buying
$0
reported purchases (SEC code P)
Insider Selling
$645K
reported sales (SEC code S)
Companies
1
in the rolling window
Frequently asked questions
How many SEC Form 4 filings has ZHANG KER made?
ZHANG KER has filed 3 SEC Form 4 filings (5 transaction rows) across 1 company since 2026.
Which companies does ZHANG KER trade?
ZHANG KER has filed SEC Form 4 disclosures for 1 company, including AMBQ.
When was ZHANG KER's most recent SEC Form 4 filing?
ZHANG KER's most recent SEC Form 4 filing on Tracefour is dated Sep 15, 2026.
What is ZHANG KER's total buy and sell value in the current window?
Inside the rolling retention window, ZHANG KER bought $0 and sold $645K based on SEC Form 4 filings.
What was ZHANG KER's largest disclosed transaction?
The largest disclosed transaction in the current window is a sale of 10,000 AMBQ shares on 2026-09-11, worth $634K, per SEC Form 4 filings.