Zhang John Z — SEC Form 4 Insider Trading Activity

Summary

Updated Jul 16, 2026

Zhang John Z has filed 2 SEC Form 4 filings across 1 company in the last 90 days — selling. Lifetime open-market sales: $5.29M.

Recent Transactions

DateTickerCompanyCodeSharesPriceValue
2026-05-12GLWCORNING INC /NYS — Open-market sale10.0K$198.34$1.98M
2026-05-06GLWCORNING INC /NYS — Open-market sale15.0K$184.67$2.77M
2026-04-16GLWCORNING INC /NYF — Tax withholding / forfeiture31.4K$168.27$5.29M
2026-04-16GLWCORNING INC /NYM — Option exercise18.9K$0.00
2026-04-16GLWCORNING INC /NYM — Option exercise42.7K$0.00
2026-02-12GLWCORNING INC /NYS — Open-market sale1.5K$133.75$205K
2026-02-11GLWCORNING INC /NYF — Tax withholding / forfeiture945$131.39$124K
2026-02-11GLWCORNING INC /NYM — Option exercise2.5K$0.00
2025-08-08GLWCORNING INC /NYS — Open-market sale1.2K$65.53$79K
2025-08-08GLWCORNING INC /NYF — Tax withholding / forfeiture1.3K$65.77$83K
2025-08-08GLWCORNING INC /NYM — Option exercise2.5K$0.00
2024-11-14GLWCORNING INC /NYS — Open-market sale5.2K$48.36$250K
2024-11-14GLWCORNING INC /NYM — Option exercise5.2K$19.65$102K

Companies — Last 90 Days

Frequently Asked Questions

Who is Zhang John Z?

Zhang John Z is a corporate insider — currently tracked as Exec. Vice President & CCDO of CORNING INC /NY (GLW). InsiderAlpha tracks every SEC Form 4 filing in real time.

How many SEC Form 4 filings has Zhang John Z submitted recently?

2 primary Form 4 filings in the last 90 days, covering 1 company.

Has Zhang John Z been buying or selling stock?

Recorded transactions: 0 open-market purchases () and 5 open-market sales ($5.29M) across all tracked filings.

Where can I see all of Zhang John Z's SEC filings?

All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.

Learn More

Open the live Zhang John Z profile on InsiderAlpha for real-time alerts, AI-scored trade ideas, and full transaction history.