Sec Form 3 Filing - Lee Maria Ricciardone @ LOCKHEED MARTIN CORP - 2024-01-01

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 Lee Maria Ricciardone 2. Issuer Name and Ticker or Trading Symbol LOCKHEED MARTIN CORP [ LMT] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) VP, Treasurer & Investor Rel. (Last) (First) (Middle) 6801 ROCKLEDGE DRIVE 3. Date of Earliest Transaction (MM/DD/YY) 01/01/2024 (Street) BETHESDA, MD20817 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 250.293 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 ( 2 ) ( 1 ) ( 1 ) Common Stock 890 D Restricted Stock Units ( 2 ) ( 3 ) 02/22/2026 Common Stock 417 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Lee Maria Ricciardone 6801 ROCKLEDGE DRIVE BETHESDA, MD20817 VP, Treasurer & Investor Rel. Signatures Maria A. Ricciardone, by John E. Stevens, Attorney-in-fact 01/11/2024 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Represents the one-time award of RSUs granted on October 24, 2022, to compensate the reporting person for the forfeiture of incentive awards at her former employer. 444 RSUs will vest on the second anniversary of the grant date and 446 RSUs will vest on the third anniversary of the grant date. ( 2 )Restricted stock units convert to common stock on a one-for-one basis. ( 3 )Award of restricted stock units which vests on the third anniversary of the grant date.

Remarks: Exhibit 24 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).

** 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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