Sec Form 3 Filing - McGlynn Lorelei @ HENRY SCHEIN INC - 2021-12-07

FORM 3 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person McGlynn Lorelei 2. Issuer Name and Ticker or Trading Symbol HENRY SCHEIN INC [ HSIC] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) SVP, Chief Human Res. Officer (Last) (First) (Middle) C/O HENRY SCHEIN, INC., 135 DURYEA ROAD 3. Date of Earliest Transaction (MM/DD/YY) 12/07/2021 (Street) MELVILLE, NY11747 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) __ X __ Form filed by One Reporting Person _____ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock, par value $0.01 per share 87,843( 1 ) D Common Stock, par value $0.01 per share 497 I by 401(k) plan( 2 )

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities) 1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5) 6. Date Exercisable and Expiration Date (MM/DD/YY) 7. Title and Amount of Underlying Securities (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares Stock Option (Right to Buy)( 3 ) $ 62.71 ( 4 ) 03/03/2031 Common Stock, par value $0.01 per share 18,224 D SERP Phantom Stock( 5 ) ( 8 ) ( 6 ) ( 6 ) Common Stock, par value $0.01 per share 1,492( 7 ) D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other McGlynn Lorelei C/O HENRY SCHEIN, INC. 135 DURYEA ROAD MELVILLE, NY11747 SVP, Chief Human Res. Officer Signatures /s/ Jennifer Ferrero (as Attorney-in-Fact for Lorelei McGlynn) 12/16/2021 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Also includes restricted stock units ("RSUs") pursuant to the Issuer's 2020 Stock Incentive Plan (f.k.a. 2013 Stock Incentive Plan). 17,197 RSUs will vest subject to (x) Issuer's achievement of a specified perf. goal and (y) reporting person's continued perf. of services for Issuer. 24,787 RSUs will vest subject to (x) passage of a specified period of time and (y) reporting person's continued perf. of services for Issuer. With respect to perf.-based RSUs, if the continued service requirement is satisfied and achievement of the perf. goal (x) exceeds 100% of target, Issuer may issue additional vested shares of common stock in an amount that corresponds to the incremental percentage of the perf. goal achieved in excess of 100% of target or (y) is less than 100% of target, the reporting person will surrender to Issuer shares of common stock in an amount that corresponds to the incremental percentage of the perf. goal achieved that is below 100% of target. ( 2 )Reflects the reporting person's interest in equivalent shares of Issuer's common stock held by the unitized stock fund in the Henry Schein, Inc. 401(k) Savings Plan (the "Plan"). The unitized stock fund consists of Issuer's common stock and cash or cash equivalents. The number of shares attributed to the reporting person as a participant in the Plan and expressed as equivalent shares has been calculated based on the closing price of Issuer's common stock on December 7, 2021. ( 3 )Acquired pursuant to the Issuer's 2020 Stock Incentive Plan. ( 4 )Subject to certain exceptions, the options will vest in three equal installments on each of the first, second and third anniversary of the grant date, subject to reporting person's continued performance of services for the Issuer. ( 5 )This Form 3 includes the reporting person's balance in the Issuer's Supplemental Executive Retirement Plan ("SERP") that is hypothetically invested in the Issuer's stock fund, representing exempt transactions in the SERP since the reporting person's initial participation therein. ( 6 )The vested balance in the reporting person's SERP account is payable in cash only following the six-month anniverary of a termination of employment or within 30 days following a change in control of the Issuer. Subject to the terms of the SERP, the reporting person may change his hypothetical investment in the investment alternatives (including the Issuer's stock fund) to an alternative hypothetical investment at any time. ( 7 )Represents the aggregate number of shares of phantom stock allocated to the reporting person under the SERP as of the date hereof based on the closing price of a share of the Issuer's common stock on December 7, 2021. ( 8 )The investment return on contributions in the SERP is generally equal to the earnings and losses that would occur if 100% of the contributions were invested, as directed by the reporting person, among the investment alternatives available under the plan (including the Issuer's stock fund). Subject to the terms of the SERP, the reporting person may change his hypothetical investment in the investment alternatives (including the Issuer's stock fund) to an alternative hypothetical investment at any time. Vested balances in the SERP are cash-settled only.

Remarks: See Exhibit 24 - Limited Power of Attorney

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).

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