X0609 4 2026-09-14 0 0001048695 F5, INC. FFIV 0001869466 MONTOYA MICHAEL F false C/O F5, INC. 801 5TH AVENUE SEATTLE WA 98104 0 1 0 0 Chief Technology Ops Officer 1 Common Stock 2026-09-14 4 S 0 1296 406.24 D 4439 D Common Stock 2026-09-14 4 S 0 240 408.96 D 4199 D Common Stock 2026-09-14 4 S 0 277 410.365 D 3922 D Common Stock 2026-09-14 4 S 0 1173 411.5015 D 2749 D Common Stock 2026-09-14 4 S 0 920 412.3777 D 1829 D Common Stock 2026-09-14 4 S 0 440 413.3145 D 1389 D Common Stock 2026-09-14 4 S 0 80 414.1819 D 1309 D This transaction was executed pursuant to a Rule 10b5-1 trading plan dated 06/15/2026. The price in Column 4 is a weighted average sale price. The prices actually received ranged from $408.73 to $409.11. The reporting person will provide to the issuer, any security holder of the issuer, or the SEC staff, upon request, information regarding the number of shares sold at each price within the range. The price in Column 4 is a weighted average sale price. The prices actually received ranged from $409.88 to $410.70. The reporting person will provide to the issuer, any security holder of the issuer, or the SEC staff, upon request, information regarding the number of shares sold at each price within the range. The price in Column 4 is a weighted average sale price. The prices actually received ranged from $410.93 to $411.91. The reporting person will provide to the issuer, any security holder of the issuer, or the SEC staff, upon request, information regarding the number of shares sold at each price within the range. The price in Column 4 is a weighted average sale price. The prices actually received ranged from $411.93 to $412.92. The reporting person will provide to the issuer, any security holder of the issuer, or the SEC staff, upon request, information regarding the number of shares sold at each price within the range. The price in Column 4 is a weighted average sale price. The prices actually received ranged from $412.93 to $413.92. The reporting person will provide to the issuer, any security holder of the issuer, or the SEC staff, upon request, information regarding the number of shares sold at each price within the range. The price in Column 4 is a weighted average sale price. The prices actually received ranged from $414.14 to $414.22. The reporting person will provide to the issuer, any security holder of the issuer, or the SEC staff, upon request, information regarding the number of shares sold at each price within the range. /s/ Angelique M. Okeke by Power of Attorney 2026-09-15