Sec Form 3 Filing - Kong Ying @ uCloudlink Group Inc. - 2026-03-18

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 Kong Ying 2. Issuer Name and Ticker or Trading Symbol uCloudlink Group Inc. [ UCL] 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) UNIT 2214-RM1, 22/F, MIRA PLACE TOWER A, 132 NATHAN ROAD, TSIM SHA TSUI, KOWLOON 3. Date of Earliest Transaction (MM/DD/YY) 03/18/2026 (Street) HONG KONG000000 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 Class A ordinary shares ( 1 ) 145,000 D Class A ordinary shares ( 2 ) 10,000 D Class A ordinary shares ( 3 ) 15,000 D Class A ordinary shares ( 4 ) 20,000 D Class A ordinary shares ( 5 ) 40,000 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 Kong Ying UNIT 2214-RM1, 22/F, MIRA PLACE TOWER A 132 NATHAN ROAD, TSIM SHA TSUI, KOWLOON HONG KONG000000 X Signatures /s/ Ying Kong 03/18/2026 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Each holder of Class A ordinary shares of uCloudlink Group Inc. (the "Company") is entitled to one vote per share and each holder of Class B ordinary shares of the Company is entitled to 15 votes per share on all matters submitted to them for a vote. Class B ordinary shares are convertible at any time by the holder thereof into Class A ordinary shares on a one-for-one basis, whereas Class A ordinary shares are not convertible into Class B ordinary shares under any circumstances. ( 2 )This represents the remaining unvested restricted share units ("RSUs") granted to the reporting person on August 30, 2022 pursuant to the Company's share incentive plans. Each RSU represents a contingent right to receive one Class A common share upon vesting. 5,000 RSUs will vest on each of August 30, 2026 and 2027. ( 3 )This represents the remaining unvested RSUs granted to the reporting person on May 31, 2023 pursuant to the Company's share incentive plans. Each RSU represents a contingent right to receive one Class A common share upon vesting. 5,000 will vest on each of May 31, 2026, 2027 and 2028. ( 4 )This represents the remaining unvested RSUs granted to the reporting person on May 31, 2024 pursuant to the Company's share incentive plans. Each RSU represents a contingent right to receive one Class A common share upon vesting. 8,000 RSUs will vest on May 31, 2026. 4,000 RSUs will vest on each of May 31, 2027, 2028 and 2029. ( 5 )This represents the remaining unvested RSUs granted to the reporting person on May 31, 2025 pursuant to the Company's share incentive plans. Each RSU represents a contingent right to receive one Class A common share upon vesting. 20,000 RSUs will vest on May 31, 2026. 8,000 RSUs will vest on May 31, 2027. 4,000 RSUs will vest on each of May 31, 2028, 2029 and 2030.

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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