Aon BDR program executes 5-for-1 stock split, adjusts underlying ratio to 1:24
AON•Aon BDR program stock split details
Aon BDR program to implement a mandatory stock split, delivering 5 additional BDRs for each 1 BDR held.
- BDR-to-underlying ratio to reset to 1:24 from 1:4, effective from the market open on 27/07/2026.
- Eligible date set for 24/07/2026; new BDRs scheduled to be credited on 29/07/2026.
- Fractional entitlements to be paid in cash; no rounding.




