Verkleeren Ronald L

Officer · GLW

As of 2026-09-27, Verkleeren Ronald L has 62 Form 4 transactions on record across 1 company — 34 in the trailing 12 months.

Everything this person has disclosed to the SEC on Form 4 — across every company they file for — reconstructed from the public record. A filing history, not a tip sheet.

Reconstructed holdings

Direct: $7.5MIndirect: $0$7.5Mas of 2026-09-27
  • Direct $7.5M
  • Indirect $0
GLWdirect48,143 sh$7.5M

Reconstructed from this person's own Form 4 filings — the total each filing reported owning afterward, priced at the close on the as-of date shown. A filed position can lag the real one.

Direct and indirect holdings (e.g. through a trust or fund) are tagged separately, as filed.

Trades by company

GLW · 62 trades
2026-05-13: Sale, 10,000 sh ($2.1M)2026-04-15: Withheld for tax, 22,843 sh ($3.8M)2026-04-15: Option exercise, 14,332 sh ($0)2026-04-15: Option exercise, 32,571 sh ($0)2026-04-15: Option exercise, 14,332 sh ($0)2026-04-15: Option exercise, 32,571 sh ($0)2026-04-01: Award / grant, 4,056 sh ($0)2026-02-09: Withheld for tax, 893 sh ($117K)2026-02-09: Option exercise, 2,476 sh ($0)2026-02-09: Option exercise, 2,476 sh ($0)2026-02-04: Withheld for tax, 1,286 sh ($141K)2026-02-04: Option exercise, 591 sh ($0)2026-02-04: Option exercise, 395 sh ($0)2026-02-04: Option exercise, 300 sh ($0)2026-02-04: Award / grant, 16,650 sh ($0)2026-02-04: Award / grant, 11,137 sh ($0)2026-02-04: Award / grant, 8,445 sh ($0)2026-02-04: Option exercise, 591 sh ($0)2026-02-04: Option exercise, 395 sh ($0)2026-02-04: Option exercise, 300 sh ($0)2026-01-02: Withheld for tax, 575 sh ($52K)2026-01-02: Option exercise, 575 sh ($0)2026-01-02: Option exercise, 575 sh ($0)2025-12-19: Gift, 2,000 sh ($0)2025-12-10: Sale, 21,000 sh ($2.0M)2025-11-21: Withheld for tax, 2,883 sh ($229K)2025-11-21: Option exercise, 663 sh ($0)2025-11-21: Option exercise, 689 sh ($0)2025-11-21: Option exercise, 737 sh ($0)2025-11-21: Option exercise, 794 sh ($0)2025-11-21: Option exercise, 663 sh ($0)2025-11-21: Option exercise, 689 sh ($0)2025-11-21: Option exercise, 737 sh ($0)2025-11-21: Option exercise, 794 sh ($0)2025-08-08: Withheld for tax, 1,264 sh ($83K)2025-08-08: Option exercise, 2,476 sh ($0)2025-08-08: Option exercise, 2,476 sh ($0)2025-06-11: Sale, 20,000 sh ($1.0M)2025-04-15: Withheld for tax, 18,368 sh ($767K)2025-04-15: Option exercise, 21,539 sh ($0)2025-04-15: Option exercise, 14,439 sh ($0)2025-04-15: Option exercise, 21,539 sh ($0)2025-04-15: Option exercise, 14,439 sh ($0)2025-04-01: Award / grant, 12,187 sh ($0)2025-02-10: Withheld for tax, 893 sh ($47K)2025-02-10: Option exercise, 2,475 sh ($0)2025-02-10: Option exercise, 2,475 sh ($0)2025-02-04: Award / grant, 14,717 sh ($0)2025-02-04: Award / grant, 13,520 sh ($0)2025-02-04: Award / grant, 14,464 sh ($0)2024-12-19: Gift, 2,000 sh ($0)2024-08-08: Withheld for tax, 2,000 sh ($77K)2024-08-08: Option exercise, 2,475 sh ($0)2024-08-08: Option exercise, 1,441 sh ($0)2024-08-08: Option exercise, 2,475 sh ($0)2024-08-08: Option exercise, 1,441 sh ($0)2024-04-15: Withheld for tax, 9,983 sh ($312K)2024-04-15: Option exercise, 9,548 sh ($0)2024-04-15: Option exercise, 13,652 sh ($0)2024-04-15: Option exercise, 13,652 sh ($0)2024-04-15: Option exercise, 9,548 sh ($0)2024-04-01: Award / grant, 16,070 sh ($0)

Filing ledger

DateCompanyActionShares @ priceValueOwnership ΔOwned afterFiling
2026-05-13GLWSale10,000 @ $207.77$2.1M−17.2% of holding48,143Form 4
2025-12-10GLWSale21,000 @ $94.69$2.0M−37.8% of holding34,500Form 4
2025-06-11GLWSale20,000 @ $50.52$1.0M−26.9% of holding54,288Form 4
59 award / exercise / gift records — not counted as purchases
DateCompanyActionSharesOwned afterFiling
2026-04-15GLWWithheld for tax22,84358,143Form 4
2026-04-15GLWOption exercise14,3320Form 4
2026-04-15GLWOption exercise32,5710Form 4
2026-04-15GLWOption exercise14,33280,986Form 4
2026-04-15GLWOption exercise32,57166,654Form 4
2026-04-01GLWAward / grant4,0564,056Form 4
2026-02-09GLWWithheld for tax89334,083Form 4
2026-02-09GLWOption exercise2,47634,976Form 4
2026-02-09GLWOption exercise2,4760Form 4
2026-02-04GLWWithheld for tax1,28632,500Form 4
2026-02-04GLWOption exercise59132,571Form 4
2026-02-04GLWOption exercise39524,543Form 4
2026-02-04GLWOption exercise3008,145Form 4
2026-02-04GLWAward / grant16,65033,162Form 4
2026-02-04GLWAward / grant11,13724,938Form 4
2026-02-04GLWAward / grant8,4458,445Form 4
2026-02-04GLWOption exercise59133,786Form 4
2026-02-04GLWOption exercise39533,195Form 4
2026-02-04GLWOption exercise30032,800Form 4
2026-01-02GLWWithheld for tax57532,500Form 4
2026-01-02GLWOption exercise57533,075Form 4
2026-01-02GLWOption exercise57511,612Form 4
2025-12-19GLWGift2,00032,500Form 4
2025-11-21GLWWithheld for tax2,88355,500Form 4
2025-11-21GLWOption exercise66358,383Form 4
2025-11-21GLWOption exercise68956,189Form 4
2025-11-21GLWOption exercise73756,926Form 4
2025-11-21GLWOption exercise79457,720Form 4
2025-11-21GLWOption exercise66313,801Form 4
2025-11-21GLWOption exercise68914,332Form 4
2025-11-21GLWOption exercise73715,333Form 4
2025-11-21GLWOption exercise79416,512Form 4
2025-08-08GLWWithheld for tax1,26455,500Form 4
2025-08-08GLWOption exercise2,4762,476Form 4
2025-08-08GLWOption exercise2,47656,764Form 4
2025-04-15GLWWithheld for tax18,36874,288Form 4
2025-04-15GLWOption exercise21,53978,217Form 4
2025-04-15GLWOption exercise14,4390Form 4
2025-04-15GLWOption exercise21,5390Form 4
2025-04-15GLWOption exercise14,43992,656Form 4

Source: SEC Form 4 filings. Each row links to its original filing.

Research tool, not investment advice — historical frequencies, not recommendations. A product of Marovel Technologies LLC. Full terms.