SAN JOSE, Calif., Oct. 26, 2017 (GLOBE NEWSWIRE) -- Monolithic Power Systems, Inc. (MPS) (Nasdaq:MPWR), a leading company in high performance analog solutions, today announced financial results for the quarter ended September 30, 2017.

• Revenue was $128.9 million, a 14.9% increase from $112.2 million for the quarter ended June 30, 2017 and a 21.1% increase from $106.5 million for the quarter ended September 30, 2016.
• GAAP gross margin was 55.0%, compared with 54.4% for the quarter ended September 30, 2016.
• Non-GAAP (1) gross margin was 55.7%, excluding the impact of $0.5 million for stock-based compensation expense and $0.5 million for the amortization of acquisition-related intangible assets, compared with 55.3% for the quarter ended September 30, 2016, excluding the impact of $0.4 million for stock-based compensation expense and $0.5 million for the amortization of acquisition-related intangible assets.
• GAAP operating expenses were $47.0 million, compared with $42.9 million for the quarter ended September 30, 2016.
• Non-GAAP (1) operating expenses were $32.9 million, excluding $13.5 million for stock-based compensation expense and $0.6 million for deferred compensation plan expense, compared with $29.4 million, excluding $13.1 million for stock-based compensation expense and $0.4 million for deferred compensation plan expense, for the quarter ended September 30, 2016.
• GAAP operating income was $23.8 million, compared with $15.0 million for the quarter ended September 30, 2016.
• Non-GAAP (1) operating income was $38.9 million, excluding $14.0 million for stock-based compensation expense, $0.5 million for the amortization of acquisition-related intangible assets and $0.6 million for deferred compensation plan expense, compared with $29.4 million, excluding $13.5 million for stock-based compensation expense, $0.5 million for the amortization of acquisition-related intangible assets and $0.4 million for deferred compensation plan expense, for the quarter ended September 30, 2016.
• GAAP interest and other income, net was $1.3 million, compared with $0.8 million for the quarter ended September 30, 2016.
• Non-GAAP (1) interest and other income, net was $0.6 million, excluding $0.7 million for deferred compensation plan income, compared with $0.3 million, excluding $0.5 million for deferred compensation plan income, for the quarter ended September 30, 2016.
• GAAP net income was $23.6 million and GAAP earnings per share were $0.54 per diluted share. Comparatively, GAAP net income was $14.4 million and GAAP earnings per share were $0.34 per diluted share for the quarter ended September 30, 2016.
• Non-GAAP (1) net income was $36.6 million and non-GAAP earnings per share were $0.84 per diluted share, excluding stock-based compensation expense, amortization of acquisition-related intangible assets, net deferred compensation plan income and related tax effects, compared with non-GAAP net income of $27.5 million and non-GAAP earnings per share of $0.66 per diluted share, excluding stock-based compensation income, amortization of acquisition-related intangible assets, net deferred compensation plan income and related tax effects, for the quarter ended September 30, 2016.

The results for the nine months ended September 30, 2017 are as follows:

• Revenue was $341.5 million, a 19.8% increase from $285.0 million for the nine months ended September 30, 2016.
• GAAP gross margin was 54.8%, compared with 54.2% for the nine months ended September 30, 2016.
• Non-GAAP (1) gross margin was 55.6%, excluding the impact of $1.3 million for stock-based compensation expense and $1.5 million for the amortization of acquisition-related intangible assets, compared with 55.1% for the nine months ended September 30, 2016, excluding the impact of $1.2 million for stock-based compensation expense and $1.5 million for the amortization of acquisition-related intangible assets.
• GAAP operating expenses were $134.8 million, compared with $117.5 million for the nine months ended September 30, 2016.
• Non-GAAP (1) operating expenses were $93.3 million, excluding $39.5 million for stock-based compensation expense and $2.0 million for deferred compensation plan expense, compared with $83.6 million, excluding $33.0 million for stock-based compensation expense and $0.9 million for deferred compensation plan expense, for the nine months ended September 30, 2016.
• GAAP operating income was $52.4 million, compared with $36.9 million for the nine months ended September 30, 2016.
• Non-GAAP (1) operating income was $96.7 million, excluding $40.8 million for stock-based compensation expense, $1.5 million for the amortization of acquisition-related intangible assets and $2.0 million for deferred compensation plan expense, compared with $73.6 million, excluding $34.3 million for stock-based compensation expense, $1.5 million for the amortization of acquisition-related intangible assets and $0.9 million for deferred compensation plan expense, for the nine months ended September 30, 2016.
• GAAP interest and other income, net was $3.9 million, compared with $1.9 million for the nine months ended September 30, 2016.
• Non-GAAP (1) interest and other income, net was $2.0 million, excluding $1.9 million for deferred compensation plan income, compared with $0.8 million, excluding $1.1 million for deferred compensation plan income, for the nine months ended September 30, 2016.
• GAAP net income was $53.1 million and GAAP earnings per share were $1.22 per diluted share. Comparatively, GAAP net income was $36.1 million and GAAP earnings per share were $0.87 per diluted share for the nine months ended September 30, 2016.
• Non-GAAP (1) net income was $91.2 million and non-GAAP earnings per share were $2.10 per diluted share, excluding stock-based compensation expense, amortization of acquisition-related intangible assets, net deferred compensation plan expense and related tax effects, compared with non-GAAP net income of $68.8 million and non-GAAP earnings per share of $1.65 per diluted share, excluding stock-based compensation expense, amortization of acquisition-related intangible assets, net deferred compensation plan income and related tax effects, for the nine months ended September 30, 2016.

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

The following is a summary of revenue by product family for the periods indicated (in thousands):