BEHRMAN MARK T bought PHX

Footnotes

Represents Deferred Stock Units credited to the reporting person's account for director's fees pursuant to the issuer's Deferred Compensation Plan for Non-Employee Directors (the "Director Deferred Compensation Plan") in lieu of cash. Each Deferred Stock Unit is the economic equivalent of one share of common stock of the issuer. The Deferred Stock Units become payable solely in common stock upon the reporting person's termination of service as a director or death or upon the effectiveness of a change of control of the issuer.; Total number of shares of common stock beneficially owned includes (i) the Deferred Stock Units credited to the reporting person as reported on this Form 4 and (ii) an aggregate 146,187 additional Deferred Stock Units that have not been previously reported, which were credited to the reporting person's account on a quarterly basis at the then-current stock price pursuant to the Director Deferred Compensation Plan subsequent to the reporting person becoming a director in 2017 and the reinvestment of dividends on the Deferred Stock Units when declared by the issuer.