Becker Stefan

Officer · GLW

As of 2026-09-27, Becker Stefan has 57 Form 4 transactions on record across 1 company — 24 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.

Pattern in the record: open-market sales filed in May in multiple years since 2025 — a recurring calendar cadence, more consistent with scheduled activity than a one-off decision.

Reconstructed holdings

Direct: $1.1MIndirect: $0$1.1Mas of 2026-09-27
  • Direct $1.1M
  • Indirect $0
GLWdirect7,137 sh$1.1M

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 · 57 trades
2026-05-13: Gift, 126 sh ($0)2026-05-08: Sale, 21,000 sh ($3.9M)2026-04-29: Withheld for tax, 2,795 sh ($425K)2026-04-29: Option exercise, 674 sh ($0)2026-04-29: Option exercise, 674 sh ($0)2026-04-29: Option exercise, 1,073 sh ($0)2026-04-29: Option exercise, 619 sh ($0)2026-04-29: Option exercise, 429 sh ($0)2026-04-29: Option exercise, 429 sh ($0)2026-04-29: Option exercise, 1,073 sh ($0)2026-04-29: Option exercise, 619 sh ($0)2026-04-15: Withheld for tax, 22,861 sh ($3.8M)2026-04-15: Option exercise, 31,046 sh ($0)2026-04-15: Option exercise, 13,734 sh ($0)2026-04-15: Option exercise, 31,046 sh ($0)2026-04-15: Option exercise, 13,734 sh ($0)2026-04-01: Award / grant, 4,846 sh ($0)2026-02-09: Withheld for tax, 815 sh ($107K)2026-02-09: Option exercise, 2,110 sh ($0)2026-02-09: Option exercise, 2,110 sh ($0)2026-02-04: Award / grant, 15,225 sh ($0)2026-02-04: Award / grant, 9,359 sh ($0)2026-02-04: Award / grant, 10,182 sh ($0)2025-10-29: Sale, 12,100 sh ($1.1M)2025-08-08: Withheld for tax, 1,078 sh ($71K)2025-08-08: Option exercise, 2,110 sh ($0)2025-08-08: Option exercise, 2,110 sh ($0)2025-05-29: Sale, 17,106 sh ($850K)2025-04-15: Withheld for tax, 16,794 sh ($702K)2025-04-15: Option exercise, 13,201 sh ($0)2025-04-15: Option exercise, 19,694 sh ($0)2025-04-15: Option exercise, 13,201 sh ($0)2025-04-15: Option exercise, 19,694 sh ($0)2025-04-01: Award / grant, 13,505 sh ($0)2025-02-10: Withheld for tax, 761 sh ($40K)2025-02-10: Option exercise, 2,109 sh ($0)2025-02-10: Option exercise, 2,109 sh ($0)2025-02-04: Award / grant, 13,456 sh ($0)2025-02-04: Award / grant, 12,360 sh ($0)2025-02-04: Award / grant, 13,224 sh ($0)2024-10-30: Sale, 24,077 sh ($1.2M)2024-10-30: Option exercise, 8,844 sh ($300K)2024-10-30: Option exercise, 4,225 sh ($83K)2024-10-30: Option exercise, 8,844 sh ($0)2024-10-30: Option exercise, 4,225 sh ($0)2024-08-14: Sale, 17,983 sh ($711K)2024-08-08: Withheld for tax, 1,675 sh ($65K)2024-08-08: Option exercise, 2,109 sh ($0)2024-08-08: Option exercise, 1,315 sh ($0)2024-08-08: Option exercise, 2,109 sh ($0)2024-08-08: Option exercise, 1,315 sh ($0)2024-04-15: Withheld for tax, 5,378 sh ($168K)2024-04-15: Option exercise, 6,138 sh ($0)2024-04-15: Option exercise, 8,777 sh ($0)2024-04-15: Option exercise, 6,138 sh ($0)2024-04-15: Option exercise, 8,777 sh ($0)2024-04-01: Award / grant, 14,692 sh ($0)

Filing ledger

DateCompanyActionShares @ priceValueOwnership ΔOwned afterFiling
2026-05-08GLWSale21,000 @ $188.08$3.9M−74.3% of holding7,263Form 4
2025-10-29GLWSale12,100 @ $91.28$1.1M−70.6% of holding5,049Form 4
2025-05-29GLWSale17,106 @ $49.68$850K−51.5% of holding16,117Form 4
2024-10-30GLWSale24,077 @ $48.63$1.2M−60.5% of holding15,729Form 4
2024-08-14GLWSale17,983 @ $39.51$711K−40.2% of holding26,737Form 4
52 award / exercise / gift records — not counted as purchases
DateCompanyActionSharesOwned afterFiling
2026-05-13GLWGift1267,137Form 4
2026-04-29GLWWithheld for tax2,79528,263Form 4
2026-04-29GLWOption exercise67414,018Form 4
2026-04-29GLWOption exercise67428,937Form 4
2026-04-29GLWOption exercise1,07322,333Form 4
2026-04-29GLWOption exercise61912,886Form 4
2026-04-29GLWOption exercise4298,930Form 4
2026-04-29GLWOption exercise42931,058Form 4
2026-04-29GLWOption exercise1,07330,629Form 4
2026-04-29GLWOption exercise61929,556Form 4
2026-04-15GLWWithheld for tax22,86128,263Form 4
2026-04-15GLWOption exercise31,04637,390Form 4
2026-04-15GLWOption exercise13,7340Form 4
2026-04-15GLWOption exercise31,0460Form 4
2026-04-15GLWOption exercise13,73451,124Form 4
2026-04-01GLWAward / grant4,8464,846Form 4
2026-02-09GLWWithheld for tax8156,344Form 4
2026-02-09GLWOption exercise2,1100Form 4
2026-02-09GLWOption exercise2,1107,159Form 4
2026-02-04GLWAward / grant15,22531,046Form 4
2026-02-04GLWAward / grant9,3599,359Form 4
2026-02-04GLWAward / grant10,18223,406Form 4
2025-08-08GLWWithheld for tax1,07817,149Form 4
2025-08-08GLWOption exercise2,1102,110Form 4
2025-08-08GLWOption exercise2,11018,227Form 4
2025-04-15GLWWithheld for tax16,79433,223Form 4
2025-04-15GLWOption exercise13,2010Form 4
2025-04-15GLWOption exercise19,69436,816Form 4
2025-04-15GLWOption exercise13,20150,017Form 4
2025-04-15GLWOption exercise19,6940Form 4
2025-04-01GLWAward / grant13,50513,505Form 4
2025-02-10GLWWithheld for tax76117,122Form 4
2025-02-10GLWOption exercise2,10917,883Form 4
2025-02-10GLWOption exercise2,1094,220Form 4
2025-02-04GLWAward / grant13,45619,694Form 4
2025-02-04GLWAward / grant12,36015,821Form 4
2025-02-04GLWAward / grant13,22413,224Form 4
2024-10-30GLWOption exercise8,84435,581Form 4
2024-10-30GLWOption exercise4,22539,806Form 4
2024-10-30GLWOption exercise8,8440Form 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.