Earnings Per Common Share
Basic earnings per common share are computed by dividing net income attributable to Corning Incorporated by the weighted-average number of common shares outstanding for the period. Diluted earnings per common share assumes the issuance of common shares for all potentially dilutive securities outstanding.
The following table presents the reconciliation of the amounts used to compute basic and diluted earnings per common share (in millions, except per share amounts):
 Year ended December 31,
 202520242023
Net income attributable to Corning Incorporated$1,596 $506 $581 
    
Weighted-average common shares outstanding - basic855853848
Effect of dilutive securities: 
Stock options and other awards161611
Weighted-average common shares outstanding - diluted871869859
Basic earnings per common share$1.87 $0.59 $0.69 
Diluted earnings per common share$1.83 $0.58 $0.68 
    
Anti-dilutive potential shares excluded from diluted earnings per common share:   
Stock options and other awards002
Total002

Historical Timeline

Fiscal YearFiled
2025Feb 12, 2026Showing above
2022Feb 13, 2023

About Earnings Per Share Disclosures

The earnings per share disclosure breaks down the calculation from net income to both basic and diluted EPS, revealing the full impact of a company's capital structure on per-share economics. The reconciliation between basic and diluted share counts exposes how many stock options, RSUs, convertible securities, and warrants are potentially dilutive to existing shareholders.

Key signals: a widening gap between basic and diluted shares indicates growing dilution from equity compensation or convertible instruments. Anti-dilutive securities excluded from the diluted calculation deserve attention — they represent latent dilution that will materialize if the stock price rises. Watch for the effect of share buybacks on per-share metrics: EPS growth driven primarily by repurchases rather than income growth signals weakening fundamentals. Compare year-over-year changes in the diluted share count against equity compensation expense to assess whether management is effectively managing dilution.