 Shares of F5 Inc. FFIV, -2.44 fell more than 17 in the extended session Tuesday after the software company reported quarterly earnings and sales above Wall Street expectations but said supply-chain snags are crimping its ability to meet increased demand. F5 said it earned 94 million, or 1.51 a share, in the fiscal first quarter, compared with 88 million, or 1.41 a share, in the year-ago quarter. 