Sec Form 4 Filing - PORTER CHRISTOPHER T @ Landsea Homes Corp - 2024-04-08

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 PORTER CHRISTOPHER T 2. Issuer Name and Ticker or Trading Symbol Landsea Homes Corp [ LSEA] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) Chief Financial Officer (Last) (First) (Middle) C/O LANDSEA HOMES CORPORATION, 1717 MCKINNEY AVENUE, SUITE 1000 3. Date of Earliest Transaction (MM/DD/YY) 04/08/2024 (Street) DALLAS, TX75202 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, par value $0.0001 04/08/2024 F 2,154 ( 1 ) D $ 13.42 72,929 ( 2 ) 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

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other PORTER CHRISTOPHER T C/O LANDSEA HOMES CORPORATION 1717 MCKINNEY AVENUE, SUITE 1000 DALLAS, TX75202 Chief Financial Officer Signatures /s/ Kelly Rentzel, Attorney-in-fact for Christopher T. Porter 04/11/2024 Signature of Reporting Person Date

Explanation of Responses:

( 1 )In connection with the vesting and settlement of restricted stock units ("RSUs") previously granted under the Landsea Homes Corporation 2020 Stock Incentive Plan (the "2020 Plan") on April 6, 2022 and July 26, 2023, the Issuer withheld shares of the Issuer's common stock, par value $0.0001 per share (the "Common Stock") to satisfy its tax withholding obligations. The number of shares withheld was based on the closing price per share on April 5, 2024. The withholding of vested shares was approved by the Board of Directors of the Issuer. ( 2 )Includes (i) 4,673 RSUs previously granted under the 2020 Plan that will vest on April 6, 2025 and (ii) 8,356 RSUs previously granted under the 2020 Plan that will vest as to one-half on each of April 6, 2025 and April 6, 2026 so long as the Reporting Person remains continuously providing services to the Issuer or its subsidiaries through such vesting date. Each RSU represents the right to receive one share of Common Stock.

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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