Stefan Becker is VP & Controller at CORNING INC /NY (GLW). They have made 7 open-market trades across 1 company since 2021, most recently 2026-05-13.
CIK 0001825967
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
0 open-market purchases, against 7 sales. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| GLW | 7,137 | $942K |
Shares reported on the most recent Form 4, priced at the 2026-05-14 close.
Counted per filing, not per execution lot — a purchase filled in several tranches is one decision.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| GLW | SELL | 2026-05-08 | 2026-05-08 | $188.08 | $3.9M | -6.6% | -3.1% | -18.8% |
| GLW | SELL | 2025-10-29 | 2025-10-30 | $91.28 | $1.1M | -3.6% | -9.2% | +14.3% |
| GLW | SELL | 2025-05-29 | 2025-05-29 | $49.68 | $1.7M | +2.6% | +6.6% | +36.3% |
| GLW | SELL | 2024-10-30 | 2024-11-01 | $48.63 | $2.3M | -2.5% | +1.7% | +3.3% |
| GLW | SELL | 2024-08-14 | 2024-08-15 | $39.51 | $711K | +5.8% | +6.7% | +17.4% |
| GLW | SELL | 2024-08-14 | 2024-12-11 | $39.51 | $1.4M | -0.1% | -0.9% | -5.6% |
| GLW | SELL | 2021-04-29 | 2021-04-30 | $44.98 | $1.2M | -4.0% | -3.4% | -6.3% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.