Simulations Plus Inc. reported on Tuesday fiscal fourth-quarter results that slightly missed expectations after a big order was delayed. The Lancaster company, which makes software for pharmaceutical clinical trials, reported net income of $245,000 (1.5 cents a share) for the fourth fiscal quarter ended Aug. 31, compared to net income of $349,000 (2.1 cents) for the same period last year. Revenue fell 4.4 percent to $1.6 million. Analysts on average expected income of 2 cents a share on revenue of $1.8 million, according to Thomson Financial Network. The company blamed its lower revenue on a delayed order from a large customer, but said the order has since been completed and will contribute to first-quarter results. For the full 2013 fiscal year, the company reported net income of $2.9 million (18 cents a share) compared to $3.3 million (19 cents) for the previous year. Revenue grew 6.6 percent to $10 million. Analysts on average expected income of 18 cents a share on revenue of $10.3 million, according to Thomson Financial Network. Shares closed down 33 cents, or more than 6 percent, to $4.95 on the Nasdaq. Ixia, a computer network equipment manufacturer, missed an extended deadline to file its third quarter earnings report as of Nov. 18. The Calabasas company had notified the Securities and Exchange Commission of the late 10-Q filing but it missed the deadline due to a review of financial information. The company was conducting the review following the resignation of Victor Alston, the former president and chief executive, who left in October over a falsified resume. The audit committee of the Ixia board has so far not found any material adjustments for the results reported on Oct. 29 for the period ending Sept. 30. “However, the review and procedures are ongoing and there can be no assurance that Ixia will not determine that material adjustments are appropriate,” the company said in a release. Shares closed down 3 cents, or a fraction of a percent, to $13.47 on the Nasdaq. Semiconductor manufacturer Semtech Corp. nearly matched analysts’ estimates for revenue in its fiscal third quarter but fell well short on net income. The Camarillo company reported net income of $12.5 million (18 cents a share) for the quarter ending Oct. 27, compared with $16.6 million (25 cents) in the same period a year earlier. Revenue dropped 12 percent to $141 million. Analysts on average expected net income of 34 cents on revenue of $140.7 million, according to Thomson Financial Network. Shares closed down $1.86, or nearly 6 percent, to $29.50 on the Nasdaq.