Sec Form 4 Filing - Nichol Laura B @ CROWN CASTLE INTERNATIONAL CORP - 2022-02-19

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 Nichol Laura B 2. Issuer Name and Ticker or Trading Symbol CROWN CASTLE INTERNATIONAL CORP [ CCI] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) EVP - Business Support (Last) (First) (Middle) 8020 KATY FREEWAY 3. Date of Earliest Transaction (MM/DD/YY) 02/19/2022 (Street) HOUSTON, TX77024 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, $0.01 Par Value 02/19/2022 M 2,971 A $ 0 17,606 D Common Stock, $0.01 Par Value 02/19/2022 M 6,687 A $ 0 24,293 D Common Stock, $0.01 Par Value 02/19/2022 M 782 A $ 0 25,075 D Common Stock, $0.01 Par Value 02/19/2022 M 698 A $ 0 25,773 D Common Stock, $0.01 Par Value 02/19/2022 M 1,414 A $ 0 27,187 D Common Stock, $0.01 Par Value 02/19/2022 F 4,047( 1 ) D $ 162.34 23,140 D Common Stock, $0.01 Par Value 2,379( 2 ) I By 401(K) Plan

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 Performance RSUs ( 3 ) 02/19/2022 M 2,971 ( 4 ) ( 4 ) Common Stock 2,971 $ 0 0 D Performance RSUs ( 3 ) 02/19/2022 M 6,687 ( 5 ) ( 5 ) Common Stock 6,687 $ 0 0 D Time RSUs ( 3 ) 02/19/2022 M 782 ( 6 ) ( 6 ) Common Stock 782 $ 0 0 D Time RSUs ( 3 ) 02/19/2022 M 698 ( 7 ) ( 7 ) Common Stock 698 $ 0 699 D Time RSUs ( 3 ) 02/19/2022 M 1,414 ( 8 ) ( 8 ) Common Stock 1,414 $ 0 2,830 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Nichol Laura B 8020 KATY FREEWAY HOUSTON, TX77024 EVP - Business Support Signatures /s/ Laura B. Nichol 02/23/2022 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Represents shares withheld by the issuer to satisfy the Reporting Person's tax withholding obligation in connection with the vesting of certain Restricted Stock Units ("RSUs") previously granted to the Reporting Person. Such withholding is exempt from Section 16(b) pursuant to Rule 16b-3(e). ( 2 )Represents shares previously acquired in transactions exempt under Rule 16b-3(c). ( 3 )Each RSU is issued pursuant to the Company's 2013 Long-Term Incentive Plan and represents a contingent right to receive one share of common stock, and vesting (i.e., forfeiture restriction termination) generally is subject to (i) the reporting person remaining an employee or director of the Company or its affiliates and (ii) the other criteria described in the footnotes herein. ( 4 )2,971 Relative TSR Performance RSUs vested on February 19, 2022, based upon the Company's annualized total stockholder return performance ranking relative to the constituent companies of the Standard & Poor's 500 Index for the three-year period ended December 31, 2021. ( 5 )6,687 Absolute TSR Performance RSUs vested on February 19, 2022, based upon the Company's annualized total stockholder return for the three-year period ended December 31, 2021. ( 6 )These Time RSUs were previously granted on February 21, 2019. 33 1/3% of the original grant amount of these Time RSUs vest on February 19 of each of 2020, 2021 and 2022. ( 7 )These Time RSUs were previously granted on February 20, 2020. 33 1/3% of the original grant amount of these Time RSUs vest on February 19 of each of 2021, 2022 and 2023. ( 8 )These Time RSUs were previously granted on February 18, 2021. 33 1/3% of the original grant amount of these Time RSUs vest on February 19 of each of 2022, 2023 and 2024.

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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