SAN JOSE, Calif., Oct. 24, 2013 — (PRNewswire) — Monolithic Power Systems (MPS) (Nasdaq: MPWR), a leading fabless manufacturer of high-performance analog and mixed-signal semiconductors, today announced financial results for the quarter ended September 30, 2013.

The results for the quarter ended September 30, 2013 are as follows:

• Net revenue was $65.3 million, a 13.2% increase from $57.7 million in the second quarter of 2013 and a 15.6% increase from $56.5 million in the third quarter of 2012.
• Gross margin was 54.0%, compared with 53.6% in the second quarter of 2013 and 53.1% in the third quarter of 2012.
• GAAP operating expenses were $26.6 million, including $26.5 million for research and development (R&D) and selling, general and administrative (SG&A) expenses, which included $5.1 million for stock-based compensation and deferred compensation plan expenses, and $0.1 million for litigation expenses. Comparatively, for the quarter ended September 30, 2012, GAAP operating expenses were $23.7 million, including $23.9 million for R&D and SG&A expenses, which included $4.1 million for stock-based compensation expenses, and $(0.2) million for litigation benefit.
• Non-GAAP(1) operating expenses were $21.6 million, excluding $5.1 million for stock-based compensation and deferred compensation plan expenses, compared with $19.6 million, excluding $4.1 million for stock-based compensation expenses, for the quarter ended September 30, 2012.
• GAAP net income was $7.4 million and GAAP earnings per share were $0.19 per diluted share. Comparatively, GAAP net income was $5.9 million and GAAP earnings per share were $0.16 per diluted share for the quarter ended September 30, 2012.
• Non-GAAP(1) net income was $12.8 million and non-GAAP earnings per share were $0.33 per diluted share, excluding stock-based compensation and deferred compensation plan expenses and related tax effects, compared with non-GAAP net income of $9.9 million and non-GAAP earnings per share of $0.27 per diluted share, excluding stock-based compensation expenses and related tax effects, for the quarter ended September 30, 2012.

The results for the nine months ended September 30, 2013 are as follows:

• Net revenue was $174.5 million, a 5.4% increase from $165.6 million for the nine months ended September 30, 2012.
• Gross margin was 53.6%, compared with 52.9% for the nine months ended September 30, 2012.
• GAAP operating expenses were $77.7 million, including $78.2 million for R&D and SG&A expenses, which included $14.6 million for stock-based compensation and deferred compensation plan expenses, and $(0.5) million for litigation benefit. Comparatively, for the nine months ended September 30, 2012, GAAP operating expenses were $71.3 million, including $71.6 million for R&D and SG&A expenses, which included $11.0 million for stock-based compensation expenses, and $(0.3) million for litigation benefit.
• Non-GAAP(1) operating expenses were $63.1 million, excluding $14.6 million for stock-based compensation and deferred compensation plan expenses, compared with $60.3 million, excluding $11.0 million for stock-based compensation expenses, for the nine months ended September 30, 2012.
• GAAP net income was $15.4 million and GAAP earnings per share were $0.40 per diluted share. Comparatively, GAAP net income was $15.5 million and GAAP earnings per share were $0.43 per diluted share for the nine months ended September 30, 2012.
• Non-GAAP(1) net income was $28.5 million and non-GAAP earnings per share were $0.74 per diluted share, excluding stock-based compensation and deferred compensation plan expenses, a one-time cash award and related tax effects, compared with non-GAAP net income of $26.1 million and non-GAAP earnings per share of $0.73 per diluted share, excluding stock-based compensation expenses and related tax effects, for the nine months ended September 30, 2012.

The following is a summary of revenue by end market for the periods indicated, estimated based on the Company's assessment of available end market data (in millions):