The Seattle Web switchmaker posted an adjusted profit of 31 cents a share. That number compares with pro forma earnings of 29 cents a share in the year-ago period.
Sales for the fiscal fourth quarter ended last month were $145.6 million, up 10% from $132.4 million in the prior quarter and 30% above the $111.7 million level a last year.
Analysts were looking for adjusted profit of 11 cents a share on $144 million in revenue, according to Yahoo Finance.
The news comes a mere 24 hours after Internet gearmaking rival
reported disappointing numbers that sent the shares down 27% Wednesday.
Looking ahead, F5 says it expects fiscal first-quarter earnings to be around 21 cents on $155 million in sales. That forecast is roughly in line with analysts expectations.
F5 shares fell $3.76, or 9%, to $36.71 in after-hours trading Wednesday.