Sec Form 4 Filing - Hoffman Richard J @ STERICYCLE INC - 2021-03-11

FORM 4 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 Hoffman Richard J 2. Issuer Name and Ticker or Trading Symbol STERICYCLE INC [ SRCL] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) SVP & Chief Accounting Officer (Last) (First) (Middle) 2355 WAUKEGAN ROAD 3. Date of Earliest Transaction (MM/DD/YY) 03/11/2021 (Street) BANNOCKBURN, IL60015 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 03/11/2021 M 1,217 A 9,068 D Common Stock ( 2 ) 03/11/2021 F 357 D $ 68.67 8,711 D Common Stock 03/12/2021 M 1,254 A 9,965 D Common Stock ( 3 ) 03/12/2021 F 368 D $ 68.5 9,597 D

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 Restricted Stock Units $ 0 ( 1 ) 03/11/2021 M 1,217 ( 4 ) ( 4 ) Common Stock 1,217 ( 1 ) 10,503 D Restricted Stock Units $ 0 ( 1 ) 03/12/2021 M 1,254 ( 5 ) ( 5 ) Common Stock 1,254 ( 1 ) 9,249 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Hoffman Richard J 2355 WAUKEGAN ROAD BANNOCKBURN, IL60015 SVP & Chief Accounting Officer Signatures /s/ Richard J. Hoffman 03/15/2021 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Each restricted stock unit (RSU) represents the right to receive, at settlement, one share of common stock. This transaction represents the settlement of RSUs in shares of common stock on their scheduled vesting date. ( 2 )No shares were sold. 357 shares were withheld by the Issuer to satisfy the minimum statutory tax withholding requirements on vesting of RSUs. ( 3 )No shares were sold. 368 shares were withheld by the Issuer to satisfy the minimum statutory tax withholding requirements on vesting of RSUs. ( 4 )This award was granted on March 11, 2020 for 3,651 shares. 1,217 shares vested on March 11, 2021 and the remaining unvested RSUs will vest on the next 2 anniversaries of the grant date. All unvested RSUs are subject to continued employment through the applicable vesting date. ( 5 )This award was granted on March 12, 2019 for 3,762 shares. 1,254 shares vested on March 12, 2021 and the remaining 1,254 unvested RSUs will vest on the next anniversary of the grant date. All unvested RSUs are subject to continued employment through the applicable vesting date.

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).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

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