FORM 4 [X] 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
                                                                                  
OMB APPROVAL
OMB Number: 3235-0287
Estimated average burden
hours per response...
0.5
                      
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 * ZELNAK STEPHEN P JR 2. Issuer Name and Ticker or Trading Symbol MARTIN MARIETTA MATERIALS INC [ MLM ] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable)__X__ Director                    _____ 10% Owner
_____ Officer (give title below)    _____ Other (specify below)
(Last)         (First)         (Middle)
2710 WYCLIFF ROAD
3. Date of Earliest Transaction (MM/DD/YYYY)
6/30/2015
(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  6/30/2015    P    15.37 (1) A $143.136  52769.37  D   
Common Stock  9/30/2015    P    14.713 (1) A $149.9456  52878.083  D   
Common Stock  12/31/2015    P    16.153 (1) A $136.9424  35994.236  D   
Common Stock  3/31/2016    P    13.451 (1) A $154.7825  36117.687  D   
Common Stock  3/31/2016    P    0.882 (1) A $154.7732  36118.569  D   
Common Stock  6/30/2016    P    11.953 (1) A $186.0813  16761.522  D   
Common Stock  9/30/2016    P    5.915 (1) A $182.6644  16860.437  D   
Common Stock  12/30/2016    P    4.783 (1) A $226.4144  16942.22  D   
Common Stock  3/31/2017    P    5.069 (1) A $214.0363  17026.289  D   
Common Stock  6/30/2017    P    4.894 (1) A $222.1251  17544.183  D   
Common Stock  9/29/2017    P    5.54 (1) A $205.9567  17629.723  D   
Common Stock  12/29/2017    P    5.244 (1) A $218.0473  17715.967  D   
Common Stock  3/29/2018    P    5.646 (1) A $202.9313  17804.613  D   
Common Stock  6/29/2018    P    5.161 (1) A $222.4821  18494.774  D   
Common Stock  9/28/2018    P    6.751 (1) A $185.9117  22086.525  D   
Common Stock  12/31/2018    P    7.454 (1) A $168.8127  22182.979  D   
Common Stock  3/29/2019    P    6.299 (1) A $200.335  22279.278  D   
Common Stock  6/28/2019    P    5.581 (1) A $226.6493  22965.859  D   
Common Stock  9/30/2019    P    5.354 (1) A $271.2869  23038.213  D   
Common Stock  12/31/2019    P    5.246 (1) A $277.4342  23106.459  D   
Common Stock  3/31/2020    P    8.228 (1) A $177.2363  23189.687  D   
Common Stock  6/5/2020    S    3500  D $226.8012  19689.687  D   
Common Stock  6/5/2020    S    13384.687  D $225.2282 (2) 6305  D   
Common Stock  6/10/2020    S    1350  D $207.7352  4955  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 shares acquired by the Reporting Person under an automatic dividend reinvestment program through his broker for quarterly cash dividends paid by the Issuer to stockholders in 2015, 2016, 2017, 2018, 2019 and 2020. These transactions should have been previously reported on Form 4 or Form 5, as applicable, and were inadvertently reported late by the Reporting Person.
(2)  The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $225.2131 to $225.32, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnote (1) to this Form 4.

Reporting Owners
Reporting Owner Name / Address
Relationships
Director 10% Owner Officer Other
ZELNAK STEPHEN P JR
2710 WYCLIFF ROAD
RALEIGH, NC 27607
X



Signatures
/s/ Stephen P. Zelnak, Jr. 7/10/2020
**Signature of Reporting Person Date
Martin Marietta Materials (NYSE:MLM)
Historical Stock Chart
From Aug 2020 to Sep 2020 Click Here for more Martin Marietta Materials Charts.
Martin Marietta Materials (NYSE:MLM)
Historical Stock Chart
From Sep 2019 to Sep 2020 Click Here for more Martin Marietta Materials Charts.