Shares of Camarillo-based Semtech Corp. plunged 11.2 percent on Dec. 19 after the company downgraded its revenue and profit outlook for the fourth quarter.
Atara Biotherapeutics, a Thousand Oaks firm that emerged last year with major Silicon Valley backers and licenses to develop six Amgen assets, has raised $38.5 million to pursue treatments for dialysis complications and ovarian cancer.
San Luis Obispo-based Digital West Networks has added a data co-location center in New York and is set to bring another online in Australia early next year.
Salem Communications said Dec. 10 that it has purchased startup Twitter curation website Twitchy.com from conservative political columnist Michelle Malkin for an undisclosed sum. Camarillo-based Salem runs dozens of Christian and conservative radio stations and websites including HotAir.com. It also publishes magazines and books under those themes.
Ventura-based Clean Diesel Technologies said Dec. 10 that CEO and President R. Craig Breese has resigned to “pursue other opportunities.” He will remain at his post until Jan. 8 and the company has created an interim office of the chief executive to replace him. Breese was also a member of the board of directors.
Westlake Village-based online advertising firm ValueClick is selling its owned-and-operated websites to the parent company of Dictionary.com, Match.com, Ask.com and About.com. The aggregate purchase price was $80 million, according to a regulatory filing.
