Zhang John Z (CIK 1825618) reported 19 SEC Form 4 insider transactions across 1 companies over the past 18 months (most recent 2026-05-12). Recent activity: Sell GLW (10,000 shares), Buy GLW (42,687 shares), Buy GLW (18,884 shares), Sell GLW (31,433 shares), Sell GLW (1,531 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-05-12 | CORNING INC /NY (GLW) | Exec. Vice President & CCDO | Sell | 10,000 | $2.0M |
| 2026-04-16 | CORNING INC /NY (GLW) | Exec. Vice President & CCDO | Buy | 42,687 | $0 |
| 2026-04-16 | CORNING INC /NY (GLW) | Exec. Vice President & CCDO | Buy | 18,884 | $0 |
| 2026-04-16 | CORNING INC /NY (GLW) | Exec. Vice President & CCDO | Sell | 31,433 | $5.3M |
| 2026-02-12 | CORNING INC /NY (GLW) | Exec. Vice President & CCDO | Sell | 1,531 | $204,771 |
| 2026-02-11 | CORNING INC /NY (GLW) | Exec. Vice President & CCDO | Buy | 2,476 | $0 |
| 2026-02-11 | CORNING INC /NY (GLW) | Exec. Vice President & CCDO | Sell | 945 | $124,164 |
| 2025-08-12 | CORNING INC /NY (GLW) | Exec. Vice President & CCDO | Buy | 2,476 | $0 |
| 2025-08-12 | CORNING INC /NY (GLW) | Exec. Vice President & CCDO | Sell | 1,264 | $83,133 |
| 2025-08-12 | CORNING INC /NY (GLW) | Exec. Vice President & CCDO | Sell | 1,212 | $79,422 |
| 2025-05-29 | CORNING INC /NY (GLW) | Exec. Vice President & CCDO | Sell | 9,610 | $473,677 |
| 2025-05-13 | CORNING INC /NY (GLW) | Exec. Vice President & CCDO | Sell | 8,000 | $375,280 |
| 2025-04-17 | CORNING INC /NY (GLW) | SVP&GM Glass Innov. & Asia | Buy | 21,539 | $0 |
| 2025-04-17 | CORNING INC /NY (GLW) | SVP&GM Glass Innov. & Asia | Buy | 14,439 | $0 |
| 2025-04-17 | CORNING INC /NY (GLW) | SVP&GM Glass Innov. & Asia | Sell | 18,368 | $767,415 |
| 2025-02-19 | CORNING INC /NY (GLW) | SVP&GM Glass Innov. & Asia | Buy | 12,529 | $424,984 |
| 2025-02-19 | CORNING INC /NY (GLW) | SVP&GM Glass Innov. & Asia | Sell | 14,111 | $744,779 |
| 2025-02-12 | CORNING INC /NY (GLW) | SVP&GM Glass Innov. & Asia | Buy | 2,475 | $0 |
| 2025-02-12 | CORNING INC /NY (GLW) | SVP&GM Glass Innov. & Asia | Sell | 893 | $47,374 |
Source: SEC Form 4 filings · as of 2026-05-12