Splunk Inc. /zigman2/quotes/203060494/composite SPLK -1.28% shares rose in the extended session Thursday after the cybersecurity company's quarterly results topped Wall Street estimates. Splunk shares rose 4% after hours, following a 1.9% decline to close the regular session at $135.88. The company reported fourth-quarter net income of $2.1 million, or 1 cent a share, compared with $33.2 million, or 23 cents a share, in the year-ago period. Adjusted earnings were 93 cents a share. Revenue rose to $622.1 million from $459.7 million in the year-ago quarter. Analysts surveyed by FactSet had forecast earnings of 76 cents a share on revenue of $562.9 million. Splunk expects revenue of about $395 million for the first quarter, and about $2.2 billion for the year, while analysts had forecast on revenue of $392.9 million for the first quarter, and $2.16 billion for the year.