India, Feb. 7 -- Proto Labs Inc. (PRLB) reported Friday a loss in its fourth quarter, compared to prior year's profit, with weak revenues. However, adjusted earnings and top line beat market estimates. The company also issued first quarter outlook, expecting earnings in line or below market estimates.

In pre-market activity on the NYSE, Proto Labs shares were trading at $45.98, up 3.58 percent.

For the first quarter, the company expects net income per share between $0.08 and $0.16, and adjusted earnings per share between $0.26 and $0.34.

The Company expects to generate revenue between $120 million and $128 million.

The Wall Street analysts on average expect the company to report earnings of $0.34 per share on revenues of $124.51 million...