Zhang John Z
Exec. Vice President & CCDO
Zhang John Z has filed 5 SEC Form 4 filings (8 transaction rows) across 1 company, with disclosures dating back to 2026. 5 of those filings fall inside the rolling window. Most recent filing: May 12, 2026.
On the most recent filing, Zhang John Z is listed as Exec. Vice President & CCDO at CORNING INC /NY. Inside the rolling window, Zhang John Z reported no open-market purchases and 3 open-market sales totaling $5.0M in GLW. The largest disclosed transaction in the window is a sale of 15,000 GLW shares on May 6, 2026, worth $2.8M.
Companies traded
Other insiders at GLW
Insider Buying
$0
reported purchases (SEC code P)
Insider Selling
$5.0M
reported sales (SEC code S)
Companies
1
in the rolling window
Frequently asked questions
How many SEC Form 4 filings has Zhang John Z made?
Zhang John Z has filed 5 SEC Form 4 filings (8 transaction rows) across 1 company since 2026.
Which companies does Zhang John Z trade?
Zhang John Z has filed SEC Form 4 disclosures for 1 company, including GLW.
When was Zhang John Z's most recent SEC Form 4 filing?
Zhang John Z's most recent SEC Form 4 filing on Tracefour is dated May 12, 2026.
What is Zhang John Z's job title?
On the most recent SEC Form 4 filings tracked by Tracefour, Zhang John Z is listed as Exec. Vice President & CCDO.
What is Zhang John Z's total buy and sell value in the current window?
Inside the rolling retention window, Zhang John Z bought $0 and sold $5.0M based on SEC Form 4 filings.
What was Zhang John Z's largest disclosed transaction?
The largest disclosed transaction in the current window is a sale of 15,000 GLW shares on 2026-05-06, worth $2.8M, per SEC Form 4 filings.