April has been a great month for Sigma Labs, Inc. (OTCMKTS:SGLB, SGLB message board) so far. The company's stock is about 40% up since the end of March and volume is booming, with many times the monthly average being shifted for three days in a row. On Monday SGLB closed another 7% in the green, stopping at $0.12 per share on 7.4 million shares changing hands.

The company put up its annual report for 2014 on the last day of March. Here is the brief summary of the numbers contained in the balance sheet:

$2.96 million in cash a/o Dec 2014

$354 thousand in total liabilities

$548 thousand in annual revenues

$3.1 million in annual net loss

The good news is that despite the slim, services-only revenues, the company is not under a pile of debt and has not really diluted during the last quarter of 2014, going from 618 million shares in November to 623 million on March 31. The fundamental side of things has not changed dramatically over at SGLB and the reason for the climb in share price is not the annual report. Sigma is conducting a launch event today – April 14, to showcase the M290 additive printer. The printer is a product of German e-Manufacturing Solutions and was originally launched in the spring of 2014. However, today's launch will be of a considerably overhauled version, containing Sigma Labs' proprietary in-process quality assurance (IPQA) technology.

This is the moment that investors have been waiting for – the commercial launch of the PrintRite3D tech, developed by SGLB. However, the excitement may have borne SGLB a little too far on the charts. The stock is deep into overbought territory and it managed to stay there for a number of days in a row. The last time it went there, the retrace was swifter but it's not unlikely that SGLB corrects again after this considerable 40% jump in the matter of just a few sessions. It remains to be seen whether today's event will have a further positive effect on the share price or the stock primed itself to a level that is too high ahead of the launch.