Sec Form 4 Filing - PORTER JONATHAN @ REINSURANCE GROUP OF AMERICA INC - 2026-08-11

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 PORTER JONATHAN 2. Issuer Name and Ticker or Trading Symbol REINSURANCE GROUP OF AMERICA INC [ RGA] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) EVP, Global Chief Risk Officer (Last) (First) (Middle) 16600 SWINGLEY RIDGE RD. 3. Date of Earliest Transaction (MM/DD/YY) 08/11/2026 (Street) CHESTERFIELD, MO63017 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 08/11/2026 M 2,264 A $ 145.25 17,149 D Common stock 08/11/2026 F 1,345 ( 1 ) D $ 244.65 15,804 D Common stock 08/11/2026 M 5,707 A $ 117.85 21,511 D Common stock 08/11/2026 F 2,750 ( 2 ) D $ 244.65 18,761 D Common stock 08/11/2026 M 2,437 A $ 129.01 21,198 D Common stock 08/11/2026 F 1,286 ( 3 ) D $ 244.65 19,912 D Common stock 08/11/2026 M 4,332 A $ 106.53 24,244 D Common stock 08/11/2026 F 1,887 ( 4 ) D $ 244.65 22,357 D Common stock 08/11/2026 M 2,571 A $ 138.34 24,928 D Common stock 08/11/2026 F 1,454 ( 5 ) D $ 244.65 23,474 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 Non-Qualified Stock Options 2019 $ 145.25 08/11/2026 M 2,264 ( 6 ) 03/01/2029 Common stock 2,264 $ 0 0 D Non-Qualified Stock Option - 2020 $ 117.85 08/11/2026 M 5,707 ( 7 ) 03/06/2030 Common stock 5,707 $ 0 0 D Non-Qualified Stock Option - 2021 $ 129.01 08/11/2026 M 2,437 ( 8 ) 03/11/2031 Common stock 2,437 $ 0 0 D Net Settled Options - 2022 $ 106.53 08/11/2026 M 4,332 ( 9 ) 03/22/2032 Common stock 4,332 $ 0 0 D Net Settled Options - 2023 $ 138.34 08/11/2026 M 2,571 ( 10 ) 03/09/2033 Common stock 2,571 $ 0 857 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other PORTER JONATHAN 16600 SWINGLEY RIDGE RD. CHESTERFIELD, MO63017 EVP, Global Chief Risk Officer Signatures /s/ My Chi To, by Power of Attorney 08/13/2026 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Represents the gross number of shares received (2,264), less shares withheld to satisfy conversion price (1,345), resulting in a net settlement of 919 shares. ( 2 )Represents the gross number of shares received (5,707), less shares withheld to satisfy conversion price (2,750), resulting in a net settlement of 2,957 shares. ( 3 )Represents the gross number of shares received (2,437), less shares withheld to satisfy conversion price (1,286), resulting in a net settlement of 1,151 shares. ( 4 )Represents the gross number of shares received (4,332), less shares withheld to satisfy conversion price (1,887), resulting in a net settlement of 2,445 shares. ( 5 )Represents the gross number of shares received (2,571), less shares withheld to satisfy conversion price (1,454), resulting in a net settlement of 1,117 shares. ( 6 )Non-Qualified Stock Option grants on March 1, 2019 vest in 25% increments on each of December 31, 2019, 2020, 2021 and 2022. ( 7 )Non-Qualified Stock Option grants on March 6, 2020 vest in 25% increments on each of December 31, 2020, 2021, 2022 and 2023. ( 8 )Non-qualified stock option grants on March 11, 2021 vest in 25% increments on each of December 31, 2021, 2022, 2023 and 2024. ( 9 )Net settled options grants (Canada) on March 22, 2022 vest in 25% increments on each of December 31, 2022, 2023, 2024 and 2025. ( 10 )Net settled options grants (Canada) on March 9, 2023 vest in 25% increments on each of December 31, 2023, 2024, 2025 and 2026.

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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