FORM 4 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
or Section 30(h) of the Investment Company Act of 1940
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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
1. Name and Address of Reporting Person *
Foss Halfdan Marius

(Last) (First) (Middle)
C/O FLEX LNG LTD
14 PAR-LA-VILLE PLACE

(Street)
HAMILTON HM 08

(City) (State) (Zip)
2. Issuer Name and Ticker or Trading Symbol
Flex LNG Ltd. [ FLNG ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director 10% Owner
X Officer (give title below) Other (specify below)
Chief Executive Officer
3. Date of Earliest Transaction (Month/Day/Year)
08/20/2026
4. If Amendment, Date of Original Filed (Month/Day/Year)
6. Individual or Joint/Group Filing (Check Applicable Line)
X Form filed by One Reporting Person
Form filed by More than One Reporting Person
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 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
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 (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 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 (Month/Day/Year) 7. Title and Amount of Securities Underlying Derivative Security (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: 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
Synthetic options $ 20.75 (1) 08/20/2026   M   27,575   06/24/2026 (2) 06/24/2030 Cash-settled synthetic option (3) $ 0 167,042 D  
Explanation of Responses:
1. On August 20, 2026, the reporting person exercised 27,575 vested synthetic options for cash settlement pursuant to the Issuer's Synthetic Option Scheme. The cash settlement value was determined based on the closing price of the Issuer's ordinary shares on the New York Stock Exchange on August 19, 2026 of $32.48 per share less the strike price of $20.75 per synthetic share option, which reflects adjustments made pursuant to the Issuer's Synthetic Option Scheme, including adjustments for dividends. No ordinary shares were issued upon exercise.
2. The reported exercise relates to the first tranche of synthetic options granted on June 24, 2025 under the Issuer's Synthetic Option Scheme. This tranche consisted of 27,575 synthetic options, all of which vested on June 24, 2026 and became exercisable upon vesting. The synthetic options issued pursuant to the Issuer's Synthetic Option Scheme vest over a three-year period in increments of one-third per annum with initial vesting on June 24, 2026 and subsequent vesting on June 24, 2027 and June 24, 2028.
3. The reported securities are cash-settled synthetic options granted under the Issuer's Synthetic Option Scheme and do not represent a right to acquire ordinary shares of the Issuer.
/s/ Marius Halfdan Foss 08/21/2026
** Signature of Reporting Person Date
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