Sec Form 4 Filing - United Acquisition SPAC LLC @ United Acquisition Corp. I - 2026-02-12

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 United Acquisition SPAC LLC 2. Issuer Name and Ticker or Trading Symbol United Acquisition Corp. I [ UACU] 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) C/O UNITED ACQUISITION CORP. I, 7100 W. CAMINO REAL, SUITE 302-48 3. Date of Earliest Transaction (MM/DD/YY) 02/12/2026 (Street) BOCA RATON, FL33433 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) _____ Form filed by One Reporting Person __ X __ 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 Class A Ordinary Shares ( 1 ) 02/12/2026 P 457 A $ 10 175,457 D ( 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 United Acquisition SPAC LLC C/O UNITED ACQUISITION CORP. I 7100 W. CAMINO REAL, SUITE 302-48 BOCA RATON, FL33433 X PACKER PAUL UNITED ACQUISITION CORP. I 7100 W. CAMINO REAL, SUITE 302-48 BOCA RATON, FL33433 X X CEO, CFO and Chairman Signatures United Acquisition SPAC LLC, By: /s/ Paul Packer as Authorized Signatory and Managing Member 02/13/2026 Signature of Reporting Person Date Paul Packer, By: /s/ Paul Packer 02/13/2026 Signature of Reporting Person Date

Explanation of Responses:

( 1 )These Class A ordinary shares (the "Private Placement Shares") underlie the 457 private placement units (the "Overallotment Private Placement Units") that United Acquisition SPAC LLC (the "Sponsor") purchased from United Acquisition Corp. I (the "Issuer") in a private placement in connection with the underwriters' partial exercise of the overallotment option, at $10.00 per Overallotment Private Placement Units, as described in the Issuer's final prospectus filed pursuant to Rule 424(b)(4) on January 29, 2026 (the "Final Prospectus"). Each Overallotment Private Placement Unit is comprised of one Private Placement Share and one-quarter of one warrant (the "Private Placement Warrants"), with each whole Private Placement Warrant exercisable to purchase one Private Placement Share. Does not represent any Private Placement Shares issuable upon the exercise of the Private Placement Warrants. ( 2 )Mr. Paul Packer, the Issuer's Chairman, Chief Executive Officer and Chief Financial Officer, is the sole managing member of the Sponsor. As a result, Mr. Packer may be deemed to have beneficial ownership of the Overallotment Private Placement Units (including the Private Placement Shares included in such units) held by the Sponsor. Mr. Packer disclaims such beneficial ownership except to the extent of his pecuniary interest therein.

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

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