X0306 4 2021-12-23 0 0001000228 HENRY SCHEIN INC HSIC 0001580247 ALI MOHAMAD C/O HENRY SCHEIN, INC. 135 DURYEA ROAD MELVILLE NY 11747 1 0 0 0 Common Stock, par value $0.01 per share 3790 D Deferred Compensation Plan Phantom Stock 2021-12-23 4 A 0 329 0.00 A Common Stock, par value $0.01 per share 329 1223 D Each share of phantom stock is the economic equivalent of one share of the Issuer's common stock. Represents the number of shares of phantom stock credited to the reporting person's phantom stock account pursuant to the Issuer's Non-Employee Director Deferred Compensation Plan (the "Plan"), representing an exempt transaction under the Plan. The number of shares of phantom stock credited to the reporting person's phantom stock account is determined by dividing the amount of deferred eligible director fees by the closing price of a share of Issuer common stock on the award date. The balance in the reporting person's phantom share account is distributed to the reporting person in Issuer common stock following the termination of the reporting person's directorship, the reporting person's death or disability or a change of control of the Issuer. Represents the aggregate number of shares of phantom stock allocated to the reporting person under the Plan as of the award date based on the closing price of a share of the Issuer's common stock on the award date. /s/ Jennifer Ferrero (as Attorney-in-Fact for Mohamad Ali) 2021-12-27