O'Day Michael Paul 4

4 · CORNING INC /NY · Filed Apr 16, 2026

AI-generated summary of this filing

Updated Apr 16, 2026

Corning (GLW) SVP Michael O'Day Exercises Awards, Withholds Shares for Taxes

What Happened

Michael P. O'Day, Senior Vice President and GM, Optical Communications at Corning Inc. (GLW), had derivative awards convert to common stock on April 15, 2026. Two conversion events resulted in 14,092 and 6,244 shares being issued (total 20,336 shares) at $0.00 per share (reflecting conversion of awards).
To satisfy tax withholding obligations, 8,410 of those shares were surrendered/withheld at an implied price of $168.27 per share, yielding $1,415,151. Net shares issued after withholding were 11,926 (20,336 converted − 8,410 withheld). This was not an open-market sale for investment purposes but routine tax withholding on vested awards.

Key Details

Transaction date: April 15, 2026; Form 4 filed April 16, 2026 (filed the next day).
Conversion amounts: 14,092 and 6,244 shares converted (total 20,336) at $0.00 (derivative conversion/exercise, code M).
Withholding/tax payment: 8,410 shares withheld/disposed at $168.27 each = $1,415,151 (code F).
Net shares received after withholding: 11,926 (may remain subject to any applicable restrictions).
Footnotes: awards include performance share units (PSUs) and restricted stock units (RSUs). Footnotes indicate PSUs/RSUs convert to one share each and reference vesting dates (e.g., PSUs/RSUs vest/convert on April 15, 2026 per filing notes). Transaction codes: M = exercise/conversion of derivative; F = tax withholding.
Filing timeliness: filing was submitted one day after the transaction (appears timely under Form 4 rules).

Context

This was a conversion/vesting event of equity awards, not a market sale. Withholding of shares to cover taxes is a common administrative step when awards vest and does not necessarily indicate a change in the insider’s investment view.
For retail investors, award conversions increase insider-held equity (net of withheld shares) but are typically part of compensation/vesting schedules rather than discretionary purchases.

Form 4

Period: 2026-04-15

SVP and GM, Optical Comm.

Transactions

Exercise/Conversion
Common Stock
2026-04-15+14,092→ 44,784 total
Exercise/Conversion
Common Stock
2026-04-15+6,244→ 51,028 total
Tax Payment
Common Stock
2026-04-15$168.27/sh−8,410$1,415,151→ 42,618 total
Exercise/Conversion
Performance Share Unit
[F1][F8]
2026-04-15−14,092→ 0 total
→ Common Stock (14,092 underlying)
Exercise/Conversion
Restricted Stock Unit
[F4][F9]
2026-04-15−6,244→ 0 total
→ Common Stock (6,244 underlying)

Holdings

Performance Share Unit
[F1][F2]
→ Common Stock (10,620 underlying)
10,620
Performance Share Unit
[F1][F3]
→ Common Stock (10,276 underlying)
10,276
Restricted Stock Unit
[F4][F5]
→ Common Stock (6,460 underlying)
6,460
Restricted Stock Unit
[F4][F6]
→ Common Stock (14,704 underlying)
14,704
Restricted Stock Unit
[F4][F7]
→ Common Stock (6,532 underlying)
6,532

Footnotes (9)

[F1]Each performance share unit represents a contingent right to receive one share of Corning Incorporated common stock.
[F2]Earned PSUs remain restricted until April 15, 2027, when they vest and convert to common stock, subject to service-based vesting requirement.
[F3]Earned PSUs remain restricted until April 14, 2028, when they vest and convert to common stock, subject to service-based vesting requirement.
[F4]Each restricted stock unit represents a contingent right to receive one share of Corning Incorporated common stock.
[F5]The restricted stock units (RSUs) vest 100% on April 15, 2027. Events such as retirement, death, disability, and others specified in the agreement may result in vesting prior to the vesting date.
[F6]The restricted stock units (RSUs) vest 100% on April 14, 2028. Events such as retirement, death, disability, and others specified in the agreement may result in vesting prior to the vesting date.
[F7]The restricted stock units (RSUs) vest 100% on April 16, 2029. Events such as retirement, death, disability, and others specified in the agreement may result in vesting prior to the vesting date.
[F8]Earned PSUs remain restricted until April 15, 2026, when they vest and convert to common stock, subject to service-based vesting requirement.
[F9]The restricted stock units (RSUs) vest 100% on April 15, 2026. Events such as retirement, death, disability, and others specified in the agreement may result in vesting prior to the vesting date.

Signature

Melissa J. Gambol, Power of Attorney|2026-04-16

1 file