What happens to the balance in "APIC-Stock options" when stock options expire unexercised?

When stock options expire unexercised, the balance in "APIC-Stock options" is reclassified to "APIC-expired stock options." This reclassification reflects the fact that the options, which were previously issued and represented potential equity, are no longer available for exercise by the optionholders.

This treatment ensures that the accounting records accurately reflect the status of the equity instruments. The original amount recognized in APIC for the stock options remains as part of additional paid-in capital, but it is now designated to indicate that these options have expired and can no longer be exercised. Hence, rather than being written off or reducing compensation expense, the balance is properly reclassified to maintain transparency and clarity in the financial statements.