Sec Form 3 Filing - Ohsiek George F. @ Chubb Ltd - 2024-09-04

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 Ohsiek George F. 2. Issuer Name and Ticker or Trading Symbol Chubb Ltd [ CB] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) Chief Accounting Officer (Last) (First) (Middle) THE CHUBB BUILDING, 17 WOODBOURNE AVENUE 3. Date of Earliest Transaction (MM/DD/YY) 09/04/2024 (Street) HAMILTON, D0HM 08 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 Shares 18,815.456 ( 1 ) ( 2 ) ( 3 ) ( 4 ) 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 Options to Acquire $ 114.78 ( 5 ) 02/26/2025 Common Shares 2,091 D Options to Acquire $ 118.39 ( 6 ) 02/25/2026 Common Shares 2,112 D Options to Acquire $ 139.01 ( 7 ) 02/23/2027 Common Shares 1,799 D Options to Acquire $ 143.07 ( 8 ) 02/22/2028 Common Shares 1,713 D Options to Acquire $ 133.9 ( 9 ) 02/28/2029 Common Shares 1,867 D Options to Acquire $ 150.11 ( 10 ) 02/27/2030 Common Shares 1,799 D Options to Acquire $ 164.94 ( 11 ) 02/25/2031 Common Shares 1,637 D Options to Acquire $ 199.03 ( 12 ) 02/24/2032 Common Shares 1,508 D Options to Acquire $ 208.6 ( 13 ) 02/23/2033 Common Shares 1,511 D Options to Acquire $ 254.84 ( 14 ) 02/26/2034 Common Shares 1,335 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Ohsiek George F. THE CHUBB BUILDING 17 WOODBOURNE AVENUE HAMILTON, D0HM 08 Chief Accounting Officer Signatures _/s/ Samantha Froud, Attorney-in-Fact 09/05/2024 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Included in the total are 307 shares of restricted stock granted pursuant to the Chubb Limited 2016 Long-Term Incentive Plan (the "Plan"). Stock vests on February 25, 2025. ( 2 )Included in the total are 565 shares of restricted stock granted pursuant to the Plan. Stock vests in equal installments on February 24, 2025 and February 24, 2026. ( 3 )Included in the total are 849 shares of restricted stock granted pursuant to the Plan. Stock vests in equal installments on February 23, 2025, February 23, 2026 and February 23, 2027. ( 4 )Included in the total are 1,001 shares of restricted stock granted pursuant to the Plan. Stock vests in equal installments on February 26, 2025, February 26, 2026, February 26, 2027 and February 26, 2028. ( 5 )Options awarded pursuant to the Plan. Options vested in equal installments on February 26, 2016, February 26, 2017 and February 26, 2018. ( 6 )Options awarded pursuant to the Plan. Options vested in equal installments on February 25, 2017, February 25, 2018 and February 25, 2019. ( 7 )Options awarded pursuant to the Plan. Options vested in equal installments on February 23, 2018, February 23, 2019 and February 23, 2020. ( 8 )Options awarded pursuant to the Plan. Options vested in equal installments on February 22, 2019, February 22, 2020 and February 23, 2021. ( 9 )Options awarded pursuant to the Plan. Options vested in equal installments on February 28, 2020, February 28, 2020 and February 28, 2020. ( 10 )Options awarded pursuant to the Plan. Options vested in equal installments on February 27, 2021, February 27, 2021 and February 27, 2021. ( 11 )Options awarded pursuant to the Plan. Options vested in equal installments on February 25, 2022, February 25, 2023 and February 25, 2024. ( 12 )Options awarded pursuant to the Plan. Options vested or will vest in equal installments on February 24, 2023, February 24, 2024 and February 24, 2025. ( 13 )Options awarded pursuant to the Plan. Options vested or will vest in equal installments on February 23, 2024, February 23, 2025 and February 23, 2026. ( 14 )Options awarded pursuant to the Plan. Options will vest in equal installments on February 26, 2025, February 26, 2026 and February 26, 2027.

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