Nathan was hired as the Chief Operating Officer (COO) of Psi Corporation, a privately-owned company in the technology sector, effective January 1, 2022. Throughout the fiscal year 2023, Psi Corporation compensated Nathan as follows:

• Base Salary: $1,000,000
• Performance Bonus: $150,000
• Stock Options: Granted 5,000 stock options with an exercise price of $55 per share at the time of grant.

Nathan's employment contract stipulates that his bonus is contingent upon achieving specific operational efficiency goals. The stock options vest over a five-year period, with 20% vesting annually beginning on the grant date.

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