Liam was recruited to serve as the Chief Financial Officer (CFO) of Alpha Corporation, a publicly-traded company in the healthcare industry, effective March 1, 2022. For the fiscal year 2023, Alpha Corporation compensated Liam as follows:

• Base Salary: $1,300,000
• Performance Bonus: $250,000
• Stock Grants: Received 8,000 shares of restricted stock with a fair market value of $70 per share at the time of grant.

Liam's employment agreement outlines that his bonus is contingent upon achieving specific financial performance metrics. The restricted stock vests over a four-year period, with 25% vesting annually beginning on the grant date.

Determine the deductible portion of Liam's compensation on Alpha Corporation's 2023 corporate income tax return.