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 OF SECURITIES
                                                                                  
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OMB Number: 3235-0287
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Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940
                       
1. Name and Address of Reporting Person * Nickolas James AJ 2. Issuer Name and Ticker or Trading Symbol MARTIN MARIETTA MATERIALS INC [ MLM ] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable)_____ Director                    _____ 10% Owner
__X__ Officer (give title below)    _____ Other (specify below)
SVP and CFO
(Last)         (First)         (Middle)
MARTIN MARIETTA MATERIALS, INC., 2710 WYCLIFF ROAD		 3. Date of Earliest Transaction (MM/DD/YYYY)
2/17/2021
(Street)
RALEIGH, NC 27607
(City)       (State)       (Zip)
 4. If Amendment, Date Original Filed (MM/DD/YYYY)
 
 6. Individual or Joint/Group Filing (Check Applicable Line) _X _ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)		 2. Trans. Date 2A. Deemed Execution Date, if any 3. Trans. 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  2/17/2021    A    3928 (1) A $0  15929  D   
Common Stock  2/17/2021    F    1766  D $325.30  14163  D   
Common Stock  2/17/2021    A    612  A $260.24  14775  D   
Common Stock  2/17/2021    A    1526 (2) A $0  16301  D   

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivate Security
(Instr. 3)		 2. Conversion or Exercise Price of Derivative Security 3. Trans. Date 3A. Deemed Execution Date, if any 4. Trans. 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 7. Title and Amount of Securities Underlying Derivative Security
(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

Explanation of Responses:
(1)  Represents the settlement of performance share units into common stock that were granted under the Martin Marietta Amended and Restated Stock Based Award Plan on February 22, 2018. The ultimate amount of shares to be received under the grant depended on the achievement of performance goals during a three-year performance period from January 1, 2018 through December 31, 2020. On February 17, 2021, Martin Marietta's Management Development and Compensation Committee certified the attainment of the applicable performance goals and approved the settlement of the PSU grant. The shares underlying the PSUs vested on December 31, 2020.
(2)  Restricted stock unit award granted under the Martin Marietta Materials, Inc. Amended and Restated Stock-Based Award Plan, which award vests pro rata in equal installments over three years from the date of grant.

Reporting Owners
Reporting Owner Name / Address
Relationships
Director 10% Owner Officer Other
Nickolas James AJ
MARTIN MARIETTA MATERIALS, INC.
2710 WYCLIFF ROAD
RALEIGH, NC 27607

SVP and CFO

Signatures
/s/ Roselyn R. Bar, attorney-in-fact 2/19/2021
**Signature of Reporting Person Date