Sec Form 4 Filing - CHEN HUAIJUN @ Landsea Homes Corp - 2024-12-09

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 CHEN HUAIJUN 2. Issuer Name and Ticker or Trading Symbol Landsea Homes Corp [ LSEA] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director X __ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) ROOMS 1007 - 1012, 10/F, K. WAH CENTRE, 191 JAVA ROAD 3. Date of Earliest Transaction (MM/DD/YY) 12/09/2024 (Street) NORTH POINT, K3000000 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 12/09/2024 S 3,565,217 ( 1 ) D $ 10.25 534,783 I Held by Ever Fast Holdings Limited ( 2 ) Common Stock 12/10/2024 S 534,783 ( 3 ) D $ 10.25 0 I Held by Ever Fast Holdings Limited ( 2 )

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 CHEN HUAIJUN ROOMS 1007 - 1012, 10/F K. WAH CENTRE, 191 JAVA ROAD NORTH POINT, K3000000 X Signatures /s/ Hauijun Chen 12/11/2024 Signature of Reporting Person Date

Explanation of Responses:

( 1 )On December 5, 2024, the Issuer entered into an underwriting agreement (the "Underwriting Agreement") with Landsea Holdings Corporation and Ever Fast Holdings Limited ("Ever Fast") as the selling stockholders and B. Riley Securities, Inc., as representative of the several underwriters named therein (the "Underwriters"), pursuant to which Ever Fast agreed to sell to the Underwriters an aggregate of 3,565,217 shares of common stock ("Common Stock") of the Issuer (the "Firm Shares") at a price per share of $10.25, before underwriting discounts and commissions (the "Secondary Offering"). The sale of the Firm Shares in the Secondary Offering closed on December 9, 2024. ( 2 )Shares held by Ever Fast Holdings Limited, a British Virgin Islands company wholly owned and controlled by 1103849 B.C. Ltd., a Birtish Columbia corporation, which is wholly owned and controlled by the Reporting Person. ( 3 )Ever Fast also granted the Underwriters a 30-day option to purchase up to an aggregate of 534,783 additional shares of Common Stock (the "Option Shares") owned by Ever Fast. On December 9, 2024, the Underwriters exercised the option to purchase the Option Shares and the sale of the Option Shares in the Secondary Offering closed on December 10, 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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