Ronald L Verkleeren insider trades: Corning (GLW) stock sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where Ronald reports to the SEC
Open-market buys and sales
3 trades reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| May 13, 2026 | GLW | ↓ Sell | 10,000 | $207.77 | $2.1M | Direct | May 14, 2026 (1d) |
| Dec 10, 2025 | GLW | ↓ Sell | 21,000 | $94.69 | $2.0M | Direct | Dec 11, 2025 (1d) |
| Jun 11, 2025 | GLW | ↓ Sell | 20,000 | $50.52 | $1.0M | Direct | Jun 12, 2025 (1d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
Other GLW insiders
Open-market trades in the last 12 months
About Ronald L Verkleeren's insider trades
Ronald L Verkleeren is SVP Emerging Innovations Group at Corning (GLW). Since Jun 11, 2025, Ronald has reported no open-market purchases and 3 sales worth $5.1M on SEC Form 4. In the last 12 months: 2 sales ($4.1M).
Their filings also include option exercises (16 filings), shares withheld for taxes (16 filings), grants and awards (12 filings), gifts (2 filings). These aren't open-market trades and aren't counted above.
How to read insider trades
Officers, directors and owners of more than 10% of a company must report trades in its stock on SEC Form 4, usually within two business days. Purchases with their own money are the stronger signal: insiders sell for many reasons (taxes, diversification, a house), but buy for one. See every GLW insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.