Ronald L. Verkleeren, SVP of Emerging Innovations Group at Corning Inc. ($GLW), sold nearly $3 million in company shares through two open market transactions over the last year. His most recent sale occurred on December 10, 2025. These sales rank him 2,724th among roughly 11,700 individual insiders by total value sold, below the average of $8.6 million across about six transactions per insider. Verkleeren made no open market purchases in this period.
| Transaction Date | Company | Ticker | Insider Name | Title | Transaction Type | Security | Shares | Price | Shares Owned Following | Total Shares Outstanding | % of Owned | % of Outstanding |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| April 1, 2026 | CORNING INC /NY | $GLW | Verkleeren Ronald L | SVP Emerging Innovations Group | A | Restricted Stock Unit | 4056 | $0.00 | 45,333.0000 | 871,000,000 | 9.83% | 0.00% |
| Feb. 9, 2026 | CORNING INC /NY | $GLW | Verkleeren Ronald L | SVP Emerging Innovations Group | F | Common Stock | 893 | $131.39 | 34,083.0000 | 871,000,000 | 2.55% | 0.00% |
| Feb. 9, 2026 | CORNING INC /NY | $GLW | Verkleeren Ronald L | SVP Emerging Innovations Group | M | Restricted Stock Unit | 2476 | $0.00 | 41,277.0000 | 871,000,000 | 5.66% | 0.00% |
| Feb. 9, 2026 | CORNING INC /NY | $GLW | Verkleeren Ronald L | SVP Emerging Innovations Group | M | Common Stock | 2476 | $0.00 | 34,976.0000 | 871,000,000 | 7.62% | 0.00% |
| Feb. 4, 2026 | CORNING INC /NY | $GLW | Verkleeren Ronald L | SVP Emerging Innovations Group | M | Performance Share Unit | 395 | $0.00 | 24,543.0000 | 871,000,000 | 1.58% | 0.00% |
| Feb. 4, 2026 | CORNING INC /NY | $GLW | Verkleeren Ronald L | SVP Emerging Innovations Group | A | Performance Share Unit | 16650 | $0.00 | 33,162.0000 | 871,000,000 | 100.84% | 0.00% |
| Feb. 4, 2026 | CORNING INC /NY | $GLW | Verkleeren Ronald L | SVP Emerging Innovations Group | A | Performance Share Unit | 11137 | $0.00 | 24,938.0000 | 871,000,000 | 80.70% | 0.00% |
| Feb. 4, 2026 | CORNING INC /NY | $GLW | Verkleeren Ronald L | SVP Emerging Innovations Group | M | Common Stock | 591 | $0.00 | 33,786.0000 | 871,000,000 | 1.78% | 0.00% |
| Feb. 4, 2026 | CORNING INC /NY | $GLW | Verkleeren Ronald L | SVP Emerging Innovations Group | F | Common Stock | 1286 | $109.69 | 32,500.0000 | 871,000,000 | 3.81% | 0.00% |
| Feb. 4, 2026 | CORNING INC /NY | $GLW | Verkleeren Ronald L | SVP Emerging Innovations Group | A | Performance Share Unit | 8445 | $0.00 | 8,445.0000 | 871,000,000 | 9999.99% | 0.00% |
| Feb. 4, 2026 | CORNING INC /NY | $GLW | Verkleeren Ronald L | SVP Emerging Innovations Group | M | Performance Share Unit | 591 | $0.00 | 32,571.0000 | 871,000,000 | 1.78% | 0.00% |
| Feb. 4, 2026 | CORNING INC /NY | $GLW | Verkleeren Ronald L | SVP Emerging Innovations Group | M | Performance Share Unit | 300 | $0.00 | 8,145.0000 | 871,000,000 | 3.55% | 0.00% |
| Feb. 4, 2026 | CORNING INC /NY | $GLW | Verkleeren Ronald L | SVP Emerging Innovations Group | M | Common Stock | 300 | $0.00 | 32,800.0000 | 871,000,000 | 0.92% | 0.00% |
| Feb. 4, 2026 | CORNING INC /NY | $GLW | Verkleeren Ronald L | SVP Emerging Innovations Group | M | Common Stock | 395 | $0.00 | 33,195.0000 | 871,000,000 | 1.20% | 0.00% |
| Jan. 2, 2026 | CORNING INC /NY | $GLW | Verkleeren Ronald L | SVP Emerging Innovations Group | M | Restricted Stock Unit | 575 | $0.00 | 43,753.0000 | 871,000,000 | 1.30% | 0.00% |
| Jan. 2, 2026 | CORNING INC /NY | $GLW | Verkleeren Ronald L | SVP Emerging Innovations Group | F | Common Stock | 575 | $90.67 | 32,500.0000 | 871,000,000 | 1.74% | 0.00% |
| Jan. 2, 2026 | CORNING INC /NY | $GLW | Verkleeren Ronald L | SVP Emerging Innovations Group | M | Common Stock | 575 | $0.00 | 33,075.0000 | 871,000,000 | 1.77% | 0.00% |
| Dec. 19, 2025 | CORNING INC /NY | $GLW | Verkleeren Ronald L | SVP Emerging Innovations Group | G | Common Stock | 2000 | $0.00 | 32,500.0000 | 870,000,000 | 5.80% | 0.00% |
| Dec. 10, 2025 | CORNING INC /NY | $GLW | Verkleeren Ronald L | SVP Emerging Innovations Group | S | Common Stock | 21000 | $94.69 | 34,500.0000 | 870,000,000 | 37.84% | 0.00% |
| Nov. 21, 2025 | CORNING INC /NY | $GLW | Verkleeren Ronald L | SVP Emerging Innovations Group | M | Common Stock | 737 | $0.00 | 56,926.0000 | 870,000,000 | 1.31% | 0.00% |
| Nov. 21, 2025 | CORNING INC /NY | $GLW | Verkleeren Ronald L | SVP Emerging Innovations Group | M | Common Stock | 663 | $0.00 | 58,383.0000 | 870,000,000 | 1.15% | 0.00% |
| Nov. 21, 2025 | CORNING INC /NY | $GLW | Verkleeren Ronald L | SVP Emerging Innovations Group | F | Common Stock | 2883 | $79.46 | 55,500.0000 | 870,000,000 | 4.94% | 0.00% |
| Nov. 21, 2025 | CORNING INC /NY | $GLW | Verkleeren Ronald L | SVP Emerging Innovations Group | M | Performance Share Unit | 663 | $0.00 | 13,801.0000 | 870,000,000 | 4.58% | 0.00% |
| Nov. 21, 2025 | CORNING INC /NY | $GLW | Verkleeren Ronald L | SVP Emerging Innovations Group | M | Performance Share Unit | 794 | $0.00 | 16,512.0000 | 870,000,000 | 4.59% | 0.00% |
| Nov. 21, 2025 | CORNING INC /NY | $GLW | Verkleeren Ronald L | SVP Emerging Innovations Group | M | Restricted Stock Unit | 737 | $0.00 | 29,996.0000 | 870,000,000 | 2.40% | 0.00% |
| Nov. 21, 2025 | CORNING INC /NY | $GLW | Verkleeren Ronald L | SVP Emerging Innovations Group | M | Restricted Stock Unit | 689 | $0.00 | 28,995.0000 | 870,000,000 | 2.32% | 0.00% |
| Nov. 21, 2025 | CORNING INC /NY | $GLW | Verkleeren Ronald L | SVP Emerging Innovations Group | M | Common Stock | 689 | $0.00 | 56,189.0000 | 870,000,000 | 1.24% | 0.00% |
| Nov. 21, 2025 | CORNING INC /NY | $GLW | Verkleeren Ronald L | SVP Emerging Innovations Group | M | Common Stock | 794 | $0.00 | 57,720.0000 | 870,000,000 | 1.39% | 0.00% |
| Aug. 8, 2025 | CORNING INC /NY | $GLW | Verkleeren Ronald L | SVP Emerging Innovations Group | M | Restricted Stock Unit | 2476 | $0.00 | 45,754.0000 | 869,000,000 | 5.13% | 0.00% |
| Aug. 8, 2025 | CORNING INC /NY | $GLW | Verkleeren Ronald L | SVP Emerging Innovations Group | F | Common Stock | 1264 | $65.77 | 55,500.0000 | 869,000,000 | 2.23% | 0.00% |
| Aug. 8, 2025 | CORNING INC /NY | $GLW | Verkleeren Ronald L | SVP Emerging Innovations Group | M | Common Stock | 2476 | $0.00 | 56,764.0000 | 869,000,000 | 4.56% | 0.00% |
| June 11, 2025 | CORNING INC /NY | $GLW | Verkleeren Ronald L | SVP Emerging Innovations Group | S | Common Stock | 20000 | $50.52 | 54,288.0000 | 869,000,000 | 26.92% | 0.00% |
| April 15, 2025 | CORNING INC /NY | $GLW | Verkleeren Ronald L | SVP Emerging Innovations Group | M | Performance Share Unit | 21539 | $0.00 | 31,770.0000 | 869,000,000 | 40.40% | 0.00% |
| April 15, 2025 | CORNING INC /NY | $GLW | Verkleeren Ronald L | SVP Emerging Innovations Group | M | Common Stock | 14439 | $0.00 | 92,656.0000 | 869,000,000 | 18.46% | 0.00% |
| April 15, 2025 | CORNING INC /NY | $GLW | Verkleeren Ronald L | SVP Emerging Innovations Group | M | Common Stock | 21539 | $0.00 | 78,217.0000 | 869,000,000 | 38.00% | 0.00% |
| April 15, 2025 | CORNING INC /NY | $GLW | Verkleeren Ronald L | SVP Emerging Innovations Group | F | Common Stock | 18368 | $41.78 | 74,288.0000 | 869,000,000 | 19.82% | 0.00% |
| April 15, 2025 | CORNING INC /NY | $GLW | Verkleeren Ronald L | SVP Emerging Innovations Group | M | Restricted Stock Unit | 14439 | $0.00 | 48,230.0000 | 869,000,000 | 23.04% | 0.00% |
| April 1, 2025 | CORNING INC /NY | $GLW | Verkleeren Ronald L | SVP Emerging Innovations Group | A | Restricted Stock Unit | 12187 | $0.00 | 62,669.0000 | 869,000,000 | 24.14% | 0.00% |
| Feb. 10, 2025 | CORNING INC /NY | $GLW | Verkleeren Ronald L | SVP Emerging Innovations Group | M | Common Stock | 2475 | $0.00 | 57,571.0000 | 869,000,000 | 4.49% | 0.00% |
| Feb. 10, 2025 | CORNING INC /NY | $GLW | Verkleeren Ronald L | SVP Emerging Innovations Group | F | Common Stock | 893 | $53.05 | 56,678.0000 | 869,000,000 | 1.55% | 0.00% |
| Feb. 10, 2025 | CORNING INC /NY | $GLW | Verkleeren Ronald L | SVP Emerging Innovations Group | M | Restricted Stock Unit | 2475 | $0.00 | 50,482.0000 | 869,000,000 | 4.67% | 0.00% |
| Feb. 4, 2025 | CORNING INC /NY | $GLW | Verkleeren Ronald L | SVP Emerging Innovations Group | A | Performance Share Unit | 14717 | $0.00 | 21,539.0000 | 869,000,000 | 215.73% | 0.00% |
| Feb. 4, 2025 | CORNING INC /NY | $GLW | Verkleeren Ronald L | SVP Emerging Innovations Group | A | Performance Share Unit | 13520 | $0.00 | 17,306.0000 | 869,000,000 | 357.11% | 0.00% |
| Feb. 4, 2025 | CORNING INC /NY | $GLW | Verkleeren Ronald L | SVP Emerging Innovations Group | A | Performance Share Unit | 14464 | $0.00 | 14,464.0000 | 869,000,000 | 9999.99% | 0.00% |
| Dec. 19, 2024 | CORNING INC /NY | $GLW | Verkleeren Ronald L | SVP Emerging Innovations Group | G | Common Stock | 2000 | $0.00 | 55,096.0000 | 868,000,000 | 3.50% | 0.00% |
| Aug. 8, 2024 | CORNING INC /NY | $GLW | Verkleeren Ronald L | SVP Emerging Innovations Group | F | Common Stock | 2000 | $38.61 | 57,096.0000 | 859,000,000 | 3.38% | 0.00% |
| Aug. 8, 2024 | CORNING INC /NY | $GLW | Verkleeren Ronald L | SVP Emerging Innovations Group | M | Restricted Stock Unit | 2475 | $0.00 | 52,957.0000 | 859,000,000 | 4.46% | 0.00% |
| Aug. 8, 2024 | CORNING INC /NY | $GLW | Verkleeren Ronald L | SVP Emerging Innovations Group | M | Restricted Stock Unit | 1441 | $0.00 | 45,530.0000 | 859,000,000 | 3.07% | 0.00% |
| Aug. 8, 2024 | CORNING INC /NY | $GLW | Verkleeren Ronald L | SVP Emerging Innovations Group | M | Common Stock | 2475 | $0.00 | 57,655.0000 | 859,000,000 | 4.49% | 0.00% |
| Aug. 8, 2024 | CORNING INC /NY | $GLW | Verkleeren Ronald L | SVP Emerging Innovations Group | M | Common Stock | 1441 | $0.00 | 59,096.0000 | 859,000,000 | 2.50% | 0.00% |
| April 15, 2024 | CORNING INC /NY | $GLW | Verkleeren Ronald L | SVP Emerging Innovations Group | F | Common Stock | 9983 | $31.29 | 55,180.0000 | 859,000,000 | 15.32% | 0.00% |
| April 15, 2024 | CORNING INC /NY | $GLW | Verkleeren Ronald L | SVP Emerging Innovations Group | M | Restricted Stock Unit | 9548 | $0.00 | 56,873.0000 | 859,000,000 | 14.37% | 0.00% |
| April 15, 2024 | CORNING INC /NY | $GLW | Verkleeren Ronald L | SVP Emerging Innovations Group | M | Performance Share Unit | 13652 | $0.00 | 10,608.0000 | 859,000,000 | 56.27% | 0.00% |
| April 15, 2024 | CORNING INC /NY | $GLW | Verkleeren Ronald L | SVP Emerging Innovations Group | M | Common Stock | 9548 | $0.00 | 51,511.0000 | 859,000,000 | 22.75% | 0.00% |
| April 15, 2024 | CORNING INC /NY | $GLW | Verkleeren Ronald L | SVP Emerging Innovations Group | M | Common Stock | 13652 | $0.00 | 65,163.0000 | 859,000,000 | 26.50% | 0.00% |
| April 1, 2024 | CORNING INC /NY | $GLW | Verkleeren Ronald L | SVP Emerging Innovations Group | A | Restricted Stock Unit | 16070 | $0.00 | 66,421.0000 | 859,000,000 | 31.92% | 0.00% |
| Feb. 8, 2024 | CORNING INC /NY | $GLW | Verkleeren Ronald L | Senior VP & GM, Life Sciences | M | Restricted Stock Unit | 4951 | $0.00 | 48,910.0000 | 859,000,000 | 9.19% | 0.00% |
| Feb. 8, 2024 | CORNING INC /NY | $GLW | Verkleeren Ronald L | Senior VP & GM, Life Sciences | M | Common Stock | 2880 | $0.00 | 44,945.0000 | 859,000,000 | 6.85% | 0.00% |
| Feb. 8, 2024 | CORNING INC /NY | $GLW | Verkleeren Ronald L | Senior VP & GM, Life Sciences | M | Common Stock | 4951 | $0.00 | 42,065.0000 | 859,000,000 | 13.34% | 0.00% |
| Feb. 8, 2024 | CORNING INC /NY | $GLW | Verkleeren Ronald L | Senior VP & GM, Life Sciences | M | Restricted Stock Unit | 2880 | $0.00 | 40,449.0000 | 859,000,000 | 6.65% | 0.00% |
| Feb. 8, 2024 | CORNING INC /NY | $GLW | Verkleeren Ronald L | Senior VP & GM, Life Sciences | F | Common Stock | 2982 | $31.73 | 41,963.0000 | 859,000,000 | 6.63% | 0.00% |
| Feb. 7, 2024 | CORNING INC /NY | $GLW | Verkleeren Ronald L | Senior VP & GM, Life Sciences | A | Performance Share Unit | 3786 | $0.00 | 3,786.0000 | 859,000,000 | 9999.99% | 0.00% |
| Feb. 7, 2024 | CORNING INC /NY | $GLW | Verkleeren Ronald L | Senior VP & GM, Life Sciences | A | Performance Share Unit | 4029 | $0.00 | 13,652.0000 | 859,000,000 | 41.87% | 0.00% |
| Feb. 7, 2024 | CORNING INC /NY | $GLW | Verkleeren Ronald L | Senior VP & GM, Life Sciences | A | Performance Share Unit | 3638 | $0.00 | 6,822.0000 | 859,000,000 | 114.26% | 0.00% |
| May 15, 2023 | CORNING INC /NY | $GLW | Verkleeren Ronald L | Senior VP & GM, Life Sciences | M | Common Stock | 508 | $0.00 | 38,872.0000 | 857,000,000 | 1.32% | 0.00% |
| May 15, 2023 | CORNING INC /NY | $GLW | Verkleeren Ronald L | Senior VP & GM, Life Sciences | M | Common Stock | 2934 | $0.00 | 38,364.0000 | 857,000,000 | 8.28% | 0.00% |
| May 15, 2023 | CORNING INC /NY | $GLW | Verkleeren Ronald L | Senior VP & GM, Life Sciences | F | Common Stock | 1758 | $31.20 | 37,114.0000 | 857,000,000 | 4.52% | 0.00% |
| May 15, 2023 | CORNING INC /NY | $GLW | Verkleeren Ronald L | Senior VP & GM, Life Sciences | M | Restricted Stock Unit | 2934 | $0.00 | 58,182.0000 | 857,000,000 | 4.80% | 0.00% |
| May 15, 2023 | CORNING INC /NY | $GLW | Verkleeren Ronald L | Senior VP & GM, Life Sciences | M | Restricted Stock Unit | 508 | $0.00 | 58,182.0000 | 857,000,000 | 0.87% | 0.00% |
| April 14, 2023 | CORNING INC /NY | $GLW | Verkleeren Ronald L | Senior VP & GM, Life Sciences | M | Common Stock | 26624 | $0.00 | 41,371.0000 | 857,000,000 | 180.54% | 0.00% |
| April 14, 2023 | CORNING INC /NY | $GLW | Verkleeren Ronald L | Senior VP & GM, Life Sciences | M | Restricted Stock Unit | 3319 | $0.00 | 61,624.0000 | 857,000,000 | 5.11% | 0.00% |
| April 14, 2023 | CORNING INC /NY | $GLW | Verkleeren Ronald L | Senior VP & GM, Life Sciences | M | Restricted Stock Unit | 8634 | $0.00 | 61,624.0000 | 857,000,000 | 12.29% | 0.00% |
| April 14, 2023 | CORNING INC /NY | $GLW | Verkleeren Ronald L | Senior VP & GM, Life Sciences | M | Performance Share Unit | 26624 | $0.00 | 12,807.0000 | 857,000,000 | 67.52% | 0.00% |
| April 14, 2023 | CORNING INC /NY | $GLW | Verkleeren Ronald L | Senior VP & GM, Life Sciences | F | Common Stock | 17894 | $34.78 | 35,430.0000 | 857,000,000 | 33.56% | 0.00% |
| April 14, 2023 | CORNING INC /NY | $GLW | Verkleeren Ronald L | Senior VP & GM, Life Sciences | M | Common Stock | 3319 | $0.00 | 53,324.0000 | 857,000,000 | 6.64% | 0.00% |
| April 14, 2023 | CORNING INC /NY | $GLW | Verkleeren Ronald L | Senior VP & GM, Life Sciences | M | Common Stock | 8634 | $0.00 | 50,005.0000 | 857,000,000 | 20.87% | 0.00% |
| April 3, 2023 | CORNING INC /NY | $GLW | Verkleeren Ronald L | Senior VP & GM, Life Sciences | A | Restricted Stock Unit | 15021 | $0.00 | 73,577.0000 | 857,000,000 | 25.65% | 0.00% |
| Feb. 8, 2023 | CORNING INC /NY | $GLW | Verkleeren Ronald L | Senior VP & GM, Life Sciences | A | Performance Share Unit | 2105 | $0.00 | 9,623.0000 | 857,000,000 | 28.00% | 0.00% |
| Feb. 8, 2023 | CORNING INC /NY | $GLW | Verkleeren Ronald L | Senior VP & GM, Life Sciences | A | Performance Share Unit | 3184 | $0.00 | 3,184.0000 | 857,000,000 | 9999.99% | 0.00% |
| Feb. 8, 2023 | CORNING INC /NY | $GLW | Verkleeren Ronald L | Senior VP & GM, Life Sciences | A | Restricted Stock Unit | 14853 | $0.00 | 54,235.0000 | 857,000,000 | 37.72% | 0.00% |
| Feb. 8, 2023 | CORNING INC /NY | $GLW | Verkleeren Ronald L | Senior VP & GM, Life Sciences | A | Restricted Stock Unit | 4321 | $0.00 | 43,703.0000 | 857,000,000 | 10.97% | 0.00% |
| Feb. 8, 2023 | CORNING INC /NY | $GLW | Verkleeren Ronald L | Senior VP & GM, Life Sciences | A | Performance Share Unit | 7477 | $0.00 | 26,624.0000 | 857,000,000 | 39.05% | 0.00% |