The stock of ReachLocal Inc. fell Wednesday, a day after the Internet marketing firm reported guidance for the current quarter that was more cautious than expected. The company also announced an acquisition.

The Woodland Hills marketing company, which serves small and medium businesses, late Tuesday reported posted a net loss of $3.6 million (-13 cents a share), compared with a loss of $1.6 million (-7 cents) a year earlier.

Revenue jumped 35 percent to $80.6 million. The gross margin grew slightly from 45.5 percent to 45.9 percent, but operating expenses jumped 42 percent to $40.9 million.

Analysts surveyed by Thomson Reuters on average expected a per-share loss of 16 cents on revenue of $80.2 million.

For the first quarter, ReachLocal expects revenue of between $83 million to $85 million, below $86 million Wall Street consensus. The company forecast full-year revenue of between $380 million to $400 million, also below analysts’ $407 million expectations.

Separately, ReachLocal, which operates in 48 markets in five countries, said it acquired privately held DealOn Media LLC for $10 million. The deal will enable its advertisers to offer location-based discount coupons, a fast-growing Internet service with several competitors, such as Groupon.

“We believe that local deals are here to stay, will become ubiquitous, and will become an important way for publishers to monetize local users online,” Chief Executive Zorik Gordon said in a statement.

Shares closed down nearly 12 percent to $21.28 on the Nasdaq.