Meera Rao
Analyst · Stifel
Thanks, Kate. Good afternoon, and welcome to the First Quarter 2014 Monolithic Power Systems Conference Call. Michael Hsing, CEO and Founder of MPS, is with me on today's call.
In the course of today’s conference call, we will make forward-looking statements and projections that involve risks and uncertainty, which could cause results to differ materially from management’s current views and expectations. Please refer to the Safe Harbor statements contained in the earnings release published today. Risks, uncertainties and other factors that could cause actual results to differ are identified in the Safe Harbor statements contained in the Q1 earnings release and in our SEC filings, including our Form 10-K filed on March 10, 2014, which is accessible through our website, www.monolithicpower.com. MPS assumes no obligation to update the information provided on today’s call.
We will be discussing gross margins, operating expense, net income and earnings on both a GAAP and a non-GAAP basis. These non-GAAP financial measures are not prepared in accordance with GAAP and should not be considered as a substitute for or superior to the measures of financial performance prepared in accordance with GAAP. A table that outlines the reconciliation between the non-GAAP financial measures to GAAP financial measures is included in our earnings release, which we have filed with the SEC. I would refer investors to the Q1 2013, Q4 2013 and Q1 2014 releases, as well as to the reconciling tables that are posted on our website. I’d also like to remind you that today’s conference call is being webcast live over the internet and will be available for replay on our website for 1 year, along with the earnings release filed with the SEC earlier today.
MPS is pleased to announce record first quarter revenue of $60.1 million, representing a 16.7% increase from the first quarter of 2013. This year-over-year increase, which was well above the industry average, was fueled by diversified growth in revenues from a newer, high-value consumer and industrial markets. Over the last several quarters, MPS has released many groundbreaking products in several new markets. MPS continues to build on the innovative foundation of these products by expanding its portfolio.
I would like to discuss some of these product family expansions with you. In our AC/DC portfolio, we introduced the industry's first Monolithic 900 volt flyback regulator designed specifically for industrial power grid applications supporting wireless communication. This product saves our customers from having to include a high-voltage blockage device, and, due to its high integration, allows for improved ease-of-use, high reliability and the lowest overall solution cost.
MPS is also expanding its LED lighting portfolio with a third-generation LED driver that includes power faction -- power factor correction with dimming capability that has been even further enhanced from our previous industry-leading generation. We have multiple design wins for this third-generation LED driver and expect revenue to ramp in the second half of the year.
Since we introduced our first products in the battery management family a few quarters ago, we have achieved significant success in the market. We have continued to expand this product family with the release of an even higher current charger, which integrates both booster kits and smart power distribution. As a result, our new charger delivers the best efficiency performance in the market, which equates to faster time to charge for users. MPS continues to leverage its technical advantage to gain market share.
Finally, MPS continues to build its portfolio of system-on-a-chip MPM modules by introducing a new mid voltage family of products. The mid voltage family works from 4.5 to 24 volts and can handle output currents up to 20 amps. Based on our industry-leading Monolithic BCD process technologies and a patented packaging technology, our MPM modules have achieved the smallest footprint on the market today. We continue to see widespread acceptance of the MPM module in the industrial storage and high-performance consumer markets.
Turning to the financials. Our first quarter revenue of $60.1 million was at the midpoint of our guidance. Compared with Q4 2013, revenue decreased by $3.5 million or 5% -- 5.5% primarily on seasonally lower consumer expense -- or consumer revenue, sorry. Looking at our revenue by end market. Industrial revenue grew approximately $900,000 to $9.8 million over the prior quarter, primarily fueled by automotive and smart meter applications. Revenue in the communications market also grew in the first quarter by $745,000 to $13.6 million. Computing revenue declined by $2 million to $10.6 million, reflecting an expected ramp down of an older HDD design win, as well as the seasonal decline in notebooks, partially offset by SSD revenue growth. Revenue from consumer markets declined $3.1 million in the first quarter to $26.1 million, largely due to seasonal declines in newer consumer markets like gaming, as well as in traditional consumer markets like TVs.
Let's review our non-GAAP operating expenses. Excluding stock compensation, our non-GAAP operating expenses for the first quarter of 2014 were $15.6 million, a decrease of $5.2 million from the $20.8 million we spent in the fourth quarter, and also down $6 million from the midpoint of our guidance. This decrease was largely due to a $9.5 million legal settlement in our favor from O2Micro. The settlement was recorded during the first quarter of 2014 as a benefit to litigation expenses. This pickup was partially offset by onetime charges of $100,000 for payments to the law firm that successfully represented us against O2Micro and special nonexecutive employee bonuses of $2.8 million.
Moving on to our GAAP operating expenses. Our GAAP operating expenses were $23 million in the first quarter compared with $26.3 million in the fourth quarter. Since the only difference between non-GAAP operating expenses and GAAP operating expense for these quarters is stock compensation expense, let's look at stock comp. Stock comp expense attributable to operating expenses was $7.4 million in the first quarter compared with $5.5 million in the prior quarter as a result of a higher charge for pay-for-performance stock plans implemented from 2012 through 2014. Accordingly, we are required under the accounting rules to assess the probability of hitting the performance metrics under the plan on a quarterly basis. As we noted before, this has increased a quarter-over-quarter volatility of stock comp charges compared to the typical straight-line approach associated with time-based grants.
Moving on to gross margin. Our first quarter GAAP gross margin was 53.4% for the first quarter compared to 54% in the prior quarter. This decrease is primarily attributable to the impact of a special nonexecutive employee bonus of approximately $300,000 in the first quarter. On a non-GAAP basis, our Q1 gross margin was 53.8% compared to 54.2% in the prior quarter. The only difference between the GAAP and non-GAAP gross margin is stock comp expense.
Switching to the bottom line. On a non-GAAP basis, our Q1 net income was $15.6 million or $0.39 per fully diluted share. This result is computed with an estimated tax rate of 7.5%. Q1 2014 GAAP net income was $9 million or $0.23 per fully diluted share.
Now let's look at the balance sheet. Cash, cash equivalents and investments were $238.5 million at the end of the first quarter of 2014, above the $236.2 million at the end of the prior quarter, as well as the $186.8 million at the end of the first quarter of 2013. In Q1, MPS generated operating cash flow of about $10.9 million. Cash proceeds from employee stock option exercises and employee stock plan purchases contributed another $6.6 million. MPS announced a $100 million buyback program effective August 2013. Under this program, we bought back approximately 324,000 shares for a total of $11.4 million in the first quarter of 2014. We also spent $3.9 million on capital equipment. Accounts receivable ended the first quarter at $22.1 million, down from the $23.7 million at the end of the prior quarter and $22.7 million at the end of the first quarter 2013. Days of sales outstanding were down to 33 days in Q1 from 34 days in Q4 2013, and 40 days in Q1 2013. Our internal inventories at the end of the year were $39.8 million, relatively flat with a $39.7 million at the end of the prior quarter. Days of inventory increased from 124 days at the end of Q4 to 130 days at the end of Q1. Inventory in the distributor channel increased by approximately $800,000 over the prior quarter.
I would now like to turn to our outlook for the second quarter of 2014. We expect second quarter revenue to be in the range of $65 million to $69 million. At the midpoint of the guidance, we are projecting approximately a 16% year-over-year increase and about 11.5% growth from the prior quarter. We also expect the following: GAAP gross margin in the range of 53.7% to 54.7%; non-GAAP gross margin in the range of 54% to 55%; total stock-based compensation expense of $7.5 million to $8.1 million, including approximately $200,000 that would be charged to cost of goods; litigation expenses of $200,000 to $400,000; non-GAAP R&D and SG&A expense to be in the range of $20.5 million to $22.5 million, this estimate excludes stock compensation and litigation expenses; fully diluted shares to be in the range of 39.5 million to 39.9 million shares before share buyback.
In conclusion, MPS had an outstanding quarter, hitting record first quarter revenues while continuing to deliver solutions that exceed industry standards. We are delivering on our promise to broaden our product portfolio and grow revenues above the industry average with sustainable long-term growth.
I'll now open the microphone for questions.