John Z Zhang
CIK 1825618 · Exec. Vice President & CCDO · last filed 2026-05-12
"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.
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Disclosed Exposure
$643.8K
Companies
1
Total Filings
53
Lifetime Open-Market Net
-$10.74M
Holdings By Company
Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| GLW | Exec. Vice President & CCDO | 5,138 | $125.31 | $643.8K | -$10.74M | 41 | 2026-05-12 |
Recent Filings · Page 2 of 6
53 filingsInsider activity across all companies, newest first. Form 4 rows are post-trade confirmations (buys, sells, grants, exercises). Notice (144) rows are pre-trade notices of intent to sell restricted or control stock under Rule 144 — they may not all execute. Compare adjacent dates to see which notices became actual sales.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2025-08-12 | GLW | Notice (144) | −1,212 | -$79.4K | EDGAR |
| 2025-08-12 | GLW | Mixed | — | -$162.6K | EDGAR |
| 2025-05-29 | GLW | Sell (S) | −9,610 | -$473.7K | EDGAR |
| 2025-05-28 | GLW | Notice (144) | −9,610 | -$473.7K | EDGAR |
| 2025-05-13 | GLW | Sell (S) | −8,000 | -$375.3K | EDGAR |
| 2025-05-12 | GLW | Notice (144) | −8,000 | -$375.3K | EDGAR |
| 2025-04-17 | GLW | Mixed | +17,610 | -$767.4K | EDGAR |
| 2025-04-03 | GLW | Grant (A) | — | $0 | EDGAR |
| 2025-02-19 | GLW | Mixed | −1,582 | -$319.8K | EDGAR |
| 2025-02-18 | GLW | Notice (144) | −14,111 | -$744.7K | EDGAR |
Form 4 codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.