William John Sempolinski »

Corning Incorporated shares owned by William John Sempolinski

Quarter-by-quarter ownership of Corning Incorporated (GLW) shares owned by William John Sempolinski from 13F filings

Historical chart of William John Sempolinski investment in Corning Incorporated

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All positions including Corning Incorporated held by William John Sempolinski consolidated in one spreadsheet with up to 7 years of data

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Quarterly reported holdings in Corning Incorporated by William John Sempolinski

Quarter filed Position value Share count Share price at filing
2026-03-31 $613k 4.5k 135.97