WD-40, Premier Exhibitions, Yahoo!: After-Hours Trading

Updated from 5:29 p.m. ET to include latest share prices, additional information about Premier Exhibitions, and news of Yahoo! naming a new COO.

NEW YORK ( TheStreet) -- Shares of WD-40 ( WDFC) fell sharply in late trades on Monday after the San Diego-based consumer product company's fiscal fourth-quarter results missed Wall Street's expectations.

The company reported net income of $8.9 million, or 56 cents a share, for the August-ended period on sales of $84.9 million, well short of the average estimate of analysts polled by Thomson Reuters for a profit of 70 cents a share on sales of $93.7 million.

"We saw some sales that we expected to come in during the fourth quarter slip into the first quarter of fiscal year 2013, particularly in Europe," said Garry Ridge, the company's CEO and president, in a statement. "We are starting to see some recovery in the markets that were weakest in the past year and remain confident that our ability to introduce and grow our core product in new markets and bring new products into mature markets will meet our expectations as we look ahead."

For fiscal 2013, WD-40 forecast earnings of $2.31 to $2.40 on sales ranging from $356 million to $370 million. The current consensus view is for earnings of $2.56 a share on sales of $369.3 million.

Shares were last quoted at $46.25, down 9.9%, on volume of less than 10,000, according to Nasdaq.com. Not factoring in that drop, the stock was up more than 25% year-to-date as of Monday's close at $51.34.

Shares of Premier Exhibitions ( PRXI) soared more than 20% late Monday after the Atlanta-based company swung to a profit from a year ago as revenue jumped more than 60% and disclosed it's signed a letter of intent related to purchasing assets pertaining to the Titanic for $189 million.

The company, which presents museum-quality shows including Bodies and others, reported earnings of $2.8 million, or 6 cents a share, on revenue of $13.4 million with the top line getting a boost from increases in the number of exhibitions, operating days, attendance and merchandise sales.

In the same period a year earlier, Premier Exhibitions lost $1.8 million, or 4 cents a share, on revenue of $8.2 million.

The results were announced early Monday though, and only prompted a 7% jump in the stock. The heavy interest in extended trades may be attributable to disclosure in the company's 10-Q filing and on its conference call of the Titanic letter of intent.

"On October 15, 2012, the Company announced that it had entered into a non-binding letter of intent with an entity representing a group of individuals (the Consortium) working to effect a purchase of the stock of RMS Titanic, Inc., for educational, regional economic development and cultural purposes for a price of $189 million," reads the 10-Q filing, adding later: "The letter of intent represents the first formalization of the process in which the Company and the Consortium seek to combine efforts to place the Titanic assets in a permanent home and to monetize the assets for the benefit of the Company's shareholders."

In its press release, Premier Exhibitions said it was "collaborating with two highly respected and experienced partners to develop exciting new content that offers both educational and entertainment value" and that it expects this undisclosed content to be ready for touring by the summer of 2013.

At last check, the stock was up 20.3% at $2.85 on volume of 84,400, according to Nasdaq.com.

Yahoo! ( YHOO) named Henrique de Castro as its chief operating officer after Monday's close. A direct report to Yahoo! CEO Marissa Mayer, de Castro most recently served as vice president of Google's ( GOOG) worldwide Partner Business Solutions group.

The company said de Castro is expected to join Yahoo! in late January or "as soon as he has satisfied his obligations to his current employer."

"Henrique is an incredibly accomplished and rigorous business leader, and I'm personally excited to have him join Yahoo!'s strong leadership team," said Mayer said in a press release. "His operational experience in Internet advertising and his proven success in structuring and scaling global organizations make him the perfect fit for Yahoo! as we propel the business to its next phase of growth."

Yahoo! shares rose 8 cents to $15.76 in late trades, while Google's stock was off 23 cents at $740.75.

-- Written by Michael Baron in New York.

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