in fiscal 2019 , our net revenue was derived primarily from sales of rf receivers and rf receiver systems-on-chip and connectivity solutions into broadband operator voice and data modems and gateways and connectivity adapters , global analog and digital rf receiver products for analog and digital pay-tv applications , radio and modem solutions into wireless carrier access and backhaul infrastructure platforms , high-speed optical interconnect solutions sold into optical modules for data-center , metro and long-haul networks , and high-performance interface and power management solutions into a broad range of communications , industrial , automotive and multi-market applications . our ability to achieve revenue growth in the future will depend , among other factors , on our ability to further penetrate existing markets ; our ability to expand our target addressable markets by developing new and innovative products ; changes in government trade policies ; and our ability to obtain design 42 wins with device manufacturers , in particular manufacturers of set-top boxes , data modems , and gateways for the broadband service provider and pay-tv industries , manufacturers selling into the smartphone market , storage networking market , cable infrastructure market , industrial and automotive markets , and optical module and telecommunications infrastructure markets . products shipped to asia accounted for 84 % , 81 % and 89 % of net revenue during the years ended december 31 , 2019 , 2018 and 2017 , respectively , including 60 % , 63 % and 71 % , respectively , from products shipped to china . although a large percentage of our products is shipped to asia , we believe that a significant number of the systems designed by these customers and incorporating our semiconductor products are then sold outside asia . for example , revenue generated from sales of our cable modem products during the years ended december 31 , 2019 , 2018 and 2017 related principally to sales to asian odms and contract manufacturers delivering products into european and north american markets . to date , all of our sales have been denominated in united states dollars . a significant portion of our net revenue has historically been generated by a limited number of customers . sales to customers comprise both direct sales to customers and indirect sales through distributors . in the year ended december 31 , 2019 , one of our direct customers , commscope , accounted for 14 % of our net revenue , and our ten largest customers collectively accounted for 63 % of our net revenue , of which distributor customers comprised 38 % of our net revenue . in the year ended december 31 , 2018 , commscope accounted for 18 % of our net revenue , and our ten largest customers collectively accounted for 61 % of our net revenue , of which distributor customers comprised 29 % of our net revenue . in the year ended december 31 , 2017 , commscope accounted for 25 % of our net revenue , and our ten largest customers collectively accounted for 58 % of our net revenue , of which distributor customers comprised 9 % of our net revenue . for certain customers , we sell multiple products into disparate end user applications such as cable modems , satellite set-top boxes and broadband gateways . our business depends on winning competitive bid selection processes , known as design wins , to develop semiconductors for use in our customers ' products . these selection processes are typically lengthy , and as a result , our sales cycles will vary based on the specific market served , whether the design win is with an existing or a new customer and whether our product being designed in our customer 's device is a first generation or subsequent generation product . our customers ' products can be complex and , if our engagement results in a design win , can require significant time to define , design and result in volume production . because the sales cycle for our products is long , we can incur significant design and development expenditures in circumstances where we do not ultimately recognize any revenue . we do not have any long-term purchase commitments with any of our customers , all of whom purchase our products on a purchase order basis . once one of our products is incorporated into a customer 's design , however , we believe that our product is likely to remain a component of the customer 's product for its life cycle because of the time and expense associated with redesigning the product or substituting an alternative chip . product life cycles in our target markets will vary by application . for example , in the cable operator modem and gateway sectors , a design-in can have a product life cycle of 24 to 48 months . in the industrial and wired and wireless infrastructure markets , a design-in can have a product life cycle of 24 to 60 months and beyond . critical accounting policies and estimates management 's discussion and analysis of our financial condition and results of operations is based upon our financial statements which are prepared in accordance with accounting principles that are generally accepted in the united states . the preparation of these financial statements requires us to make estimates and judgments that affect the reported amounts of assets and liabilities , related disclosure of contingent assets and liabilities at the date of the financial statements , and the reported amounts of revenues and expenses during the reporting period . we continually evaluate our estimates and judgments , the most critical of which are those related to revenue recognition , inventory valuation , income taxes and stock-based compensation . we base our estimates and judgments on historical experience and other factors that we believe to be reasonable under the circumstances . materially different results can occur as circumstances change and additional information becomes known . story_separator_special_tag we will continue to assess the appropriateness of the use of the simplified method as we develop a history of option exercises . recently adopted accounting pronouncements in february 2016 , the fasb issued asu no . 2016-02 , leases ( topic 842 ) . the amendments in this update require a lessee to recognize in the statement of financial position a liability to make lease payments ( the lease liability ) and a right-of- 46 use asset representing its right to use the underlying asset . for leases less than twelve months , an entity is permitted to make an accounting policy election by class of underlying asset not to recognize right-of-use assets and lease liabilities . if a lessee makes this election , it should recognize lease expense for such leases generally on a straight-line basis over the lease term . we have made this election . also , in july 2018 , the fasb issued asu no . 2018-11 , leases ( topic 842 ) : targeted improvements , to provide an additional transition method . an entity can elect not to present comparative financial information under topic 842 if it recognizes a cumulative-effect adjustment to retained earnings upon adoption . we have also made this election . further , in january 2019 , the fasb issued asu 2019-01 , leases ( topic 842 ) : codification improvements , which clarified that post-adoption interim transition disclosures normally required in the year of adoption for the effect of a change in accounting principle on an entity 's financial statements are not required for the adoption of asc 842. the amendments in these updates are effective for us for fiscal years beginning with 2019 , including interim periods within those years , with early adoption permitted . we have completed our assessment of the impact of the adoption of asc 842. upon adoption , we recognized approximately $ 24.8 million of right-of-use assets and a net increase of $ 25.1 million in lease-related liabilities at january 1 , 2019. also , the impact of the adoption of asc 842 on our accumulated deficit and deferred tax assets at january 1 , 2019 was not material . lastly , the impact of the adoption of asc 842 on our consolidated results of operations for the year ended december 31 , 2019 was not material . in july 2018 , the fasb issued asu no . 2018-10 , codification improvements to topic 842 , leases , to clarify how to apply certain aspects of the new lease accounting standard . the amendments in this update , among other things , better articulates the requirement for a lessee 's reassessment of lease classification as of the effective date of a modification , clarifies that a change to an index or rate for variable lease payments does not constitute a resolution of a contingency that would result in the remeasurement of lease payments , and requires entities that apply topic 842 retrospectively to each reporting period and do not adopt the practical expedients to write off any prior unamortized initial direct costs that do not meet the definition under topic 842 to equity . the amendments in this update have the same effective date and transition requirements as the new lease standard summarized above . we have disclosed the impact of adoption of topic 842 on our consolidated financial position and results of operations as stated above . in july 2018 , the fasb issued asu no . 2018-09 , codification improvements , to clarify the codification and prevent unintended application of the guidance . an amendment to asc 718-740 , compensation—stock compensation—income taxes , clarifies that excess tax benefits should be recognized in the period in which the amount of the deduction is determined . the transition and effective date guidance is based on the facts and circumstances of each amendment . the amendment identified above will be effective for us beginning with fiscal year 2019. the adoption of the amendments in this update in year ended december 31 , 2019 did not have a material impact on our consolidated financial position and results of operations . in august 2017 , the fasb issued asu 2017-12 , derivatives and hedging ( topic 815 ) , which is intended to improve accounting for hedging activities by expanding and refining hedge accounting for both nonfinancial and financial risk components and aligning the recognition and presentation of the effects of the hedging instrument and the hedged item in the financial statements . the amendments in this update became effective for us beginning with fiscal year 2019. the amendments in this update were required to be applied prospectively . the adoption of the amendments in this update did not have a material impact on our consolidated financial statements for the year ended december 31 , 2019. in july 2019 , the fasb issued asu no . 2019-07 , codification updates to sec sections—amendments to sec paragraphs pursuant to sec final rule releases no . 33-10532 , disclosure update and simplification , and nos . 33-10231 and 33-10442 , investment company reporting modernization , and miscellaneous updates , to align the fasb 's accounting standards codification with requirements of certain already effective sec final rules , which included requiring interim presentation of changes in stockholders ' equity and eliminating certain other disclosures . the amendments in asu no . 2019-07 were effective for us immediately in the third quarter 2019. we previously adopted the related sec final rules in our 2018 annual report and form 10-q for the three months ended march 31 , 2019. the adoption of the amendments in these updates did not have a material impact on our consolidated financial position , results of operations , and disclosures . recently issued accounting pronouncements in june 2016 , the fasb issued asu no . 2016-13 , financial instruments—credit losses ( topic 326 ) : measurement of credit losses on financial instruments , to require the

. net cash provided by operating activities consisted of positive cash flow from operations including $ 100.3 million in non-cash operating expenses and $ 28.6 million in changes in operating assets and liabilities , partially offset by net loss of $ 26.2 million . non-cash items included in net loss for the year ended december 31 , 2018 primarily included depreciation and amortization of property , equipment and intangible assets of $ 79.0 million , stock-based compensation of $ 31.7 million , and impairment of intangible assets of $ 2.2 million , partially offset by deferred income taxes of $ 12.1 million and excess tax benefits on stock-based awards of $ 2.0 million . cash flows from investing activities net cash used in investing activities was $ 7.0 million for the year ended december 31 , 2019 . net cash used in investing activities primarily consisted of $ 6.9 million in purchases of property and equipment . net cash used in investing activities was $ 7.8 million for the year ended december 31 , 2018 . net cash used in investing activities consisted entirely of $ 7.8 million in purchases of property and equipment . cash flows from financing activities net cash used in financing activities was $53.4 million for the year ended december 31 , 2019 .


 Write a concise suspicious activity report of the following text delimited by triple backquotes. Return your response as a formal report which covers the key points highlighting the location,dates,entity names and account holder information in chronological order of the text.
     ```. net cash provided by operating activities consisted of positive cash flow from operations including $ 100.3 million in non-cash operating expenses and $ 28.6 million in changes in operating assets and liabilities , partially offset by net loss of $ 26.2 million . non-cash items included in net loss for the year ended december 31 , 2018 primarily included depreciation and amortization of property , equipment and intangible assets of $ 79.0 million , stock-based compensation of $ 31.7 million , and impairment of intangible assets of $ 2.2 million , partially offset by deferred income taxes of $ 12.1 million and excess tax benefits on stock-based awards of $ 2.0 million . cash flows from investing activities net cash used in investing activities was $ 7.0 million for the year ended december 31 , 2019 . net cash used in investing activities primarily consisted of $ 6.9 million in purchases of property and equipment . net cash used in investing activities was $ 7.8 million for the year ended december 31 , 2018 . net cash used in investing activities consisted entirely of $ 7.8 million in purchases of property and equipment . cash flows from financing activities net cash used in financing activities was $53.4 million for the year ended december 31 , 2019 .
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 Suspicious Activity Report : in fiscal 2019 , our net revenue was derived primarily from sales of rf receivers and rf receiver systems-on-chip and connectivity solutions into broadband operator voice and data modems and gateways and connectivity adapters , global analog and digital rf receiver products for analog and digital pay-tv applications , radio and modem solutions into wireless carrier access and backhaul infrastructure platforms , high-speed optical interconnect solutions sold into optical modules for data-center , metro and long-haul networks , and high-performance interface and power management solutions into a broad range of communications , industrial , automotive and multi-market applications . our ability to achieve revenue growth in the future will depend , among other factors , on our ability to further penetrate existing markets ; our ability to expand our target addressable markets by developing new and innovative products ; changes in government trade policies ; and our ability to obtain design 42 wins with device manufacturers , in particular manufacturers of set-top boxes , data modems , and gateways for the broadband service provider and pay-tv industries , manufacturers selling into the smartphone market , storage networking market , cable infrastructure market , industrial and automotive markets , and optical module and telecommunications infrastructure markets . products shipped to asia accounted for 84 % , 81 % and 89 % of net revenue during the years ended december 31 , 2019 , 2018 and 2017 , respectively , including 60 % , 63 % and 71 % , respectively , from products shipped to china . although a large percentage of our products is shipped to asia , we believe that a significant number of the systems designed by these customers and incorporating our semiconductor products are then sold outside asia . for example , revenue generated from sales of our cable modem products during the years ended december 31 , 2019 , 2018 and 2017 related principally to sales to asian odms and contract manufacturers delivering products into european and north american markets . to date , all of our sales have been denominated in united states dollars . a significant portion of our net revenue has historically been generated by a limited number of customers . sales to customers comprise both direct sales to customers and indirect sales through distributors . in the year ended december 31 , 2019 , one of our direct customers , commscope , accounted for 14 % of our net revenue , and our ten largest customers collectively accounted for 63 % of our net revenue , of which distributor customers comprised 38 % of our net revenue . in the year ended december 31 , 2018 , commscope accounted for 18 % of our net revenue , and our ten largest customers collectively accounted for 61 % of our net revenue , of which distributor customers comprised 29 % of our net revenue . in the year ended december 31 , 2017 , commscope accounted for 25 % of our net revenue , and our ten largest customers collectively accounted for 58 % of our net revenue , of which distributor customers comprised 9 % of our net revenue . for certain customers , we sell multiple products into disparate end user applications such as cable modems , satellite set-top boxes and broadband gateways . our business depends on winning competitive bid selection processes , known as design wins , to develop semiconductors for use in our customers ' products . these selection processes are typically lengthy , and as a result , our sales cycles will vary based on the specific market served , whether the design win is with an existing or a new customer and whether our product being designed in our customer 's device is a first generation or subsequent generation product . our customers ' products can be complex and , if our engagement results in a design win , can require significant time to define , design and result in volume production . because the sales cycle for our products is long , we can incur significant design and development expenditures in circumstances where we do not ultimately recognize any revenue . we do not have any long-term purchase commitments with any of our customers , all of whom purchase our products on a purchase order basis . once one of our products is incorporated into a customer 's design , however , we believe that our product is likely to remain a component of the customer 's product for its life cycle because of the time and expense associated with redesigning the product or substituting an alternative chip . product life cycles in our target markets will vary by application . for example , in the cable operator modem and gateway sectors , a design-in can have a product life cycle of 24 to 48 months . in the industrial and wired and wireless infrastructure markets , a design-in can have a product life cycle of 24 to 60 months and beyond . critical accounting policies and estimates management 's discussion and analysis of our financial condition and results of operations is based upon our financial statements which are prepared in accordance with accounting principles that are generally accepted in the united states . the preparation of these financial statements requires us to make estimates and judgments that affect the reported amounts of assets and liabilities , related disclosure of contingent assets and liabilities at the date of the financial statements , and the reported amounts of revenues and expenses during the reporting period . we continually evaluate our estimates and judgments , the most critical of which are those related to revenue recognition , inventory valuation , income taxes and stock-based compensation . we base our estimates and judgments on historical experience and other factors that we believe to be reasonable under the circumstances . materially different results can occur as circumstances change and additional information becomes known . story_separator_special_tag we will continue to assess the appropriateness of the use of the simplified method as we develop a history of option exercises . recently adopted accounting pronouncements in february 2016 , the fasb issued asu no . 2016-02 , leases ( topic 842 ) . the amendments in this update require a lessee to recognize in the statement of financial position a liability to make lease payments ( the lease liability ) and a right-of- 46 use asset representing its right to use the underlying asset . for leases less than twelve months , an entity is permitted to make an accounting policy election by class of underlying asset not to recognize right-of-use assets and lease liabilities . if a lessee makes this election , it should recognize lease expense for such leases generally on a straight-line basis over the lease term . we have made this election . also , in july 2018 , the fasb issued asu no . 2018-11 , leases ( topic 842 ) : targeted improvements , to provide an additional transition method . an entity can elect not to present comparative financial information under topic 842 if it recognizes a cumulative-effect adjustment to retained earnings upon adoption . we have also made this election . further , in january 2019 , the fasb issued asu 2019-01 , leases ( topic 842 ) : codification improvements , which clarified that post-adoption interim transition disclosures normally required in the year of adoption for the effect of a change in accounting principle on an entity 's financial statements are not required for the adoption of asc 842. the amendments in these updates are effective for us for fiscal years beginning with 2019 , including interim periods within those years , with early adoption permitted . we have completed our assessment of the impact of the adoption of asc 842. upon adoption , we recognized approximately $ 24.8 million of right-of-use assets and a net increase of $ 25.1 million in lease-related liabilities at january 1 , 2019. also , the impact of the adoption of asc 842 on our accumulated deficit and deferred tax assets at january 1 , 2019 was not material . lastly , the impact of the adoption of asc 842 on our consolidated results of operations for the year ended december 31 , 2019 was not material . in july 2018 , the fasb issued asu no . 2018-10 , codification improvements to topic 842 , leases , to clarify how to apply certain aspects of the new lease accounting standard . the amendments in this update , among other things , better articulates the requirement for a lessee 's reassessment of lease classification as of the effective date of a modification , clarifies that a change to an index or rate for variable lease payments does not constitute a resolution of a contingency that would result in the remeasurement of lease payments , and requires entities that apply topic 842 retrospectively to each reporting period and do not adopt the practical expedients to write off any prior unamortized initial direct costs that do not meet the definition under topic 842 to equity . the amendments in this update have the same effective date and transition requirements as the new lease standard summarized above . we have disclosed the impact of adoption of topic 842 on our consolidated financial position and results of operations as stated above . in july 2018 , the fasb issued asu no . 2018-09 , codification improvements , to clarify the codification and prevent unintended application of the guidance . an amendment to asc 718-740 , compensation—stock compensation—income taxes , clarifies that excess tax benefits should be recognized in the period in which the amount of the deduction is determined . the transition and effective date guidance is based on the facts and circumstances of each amendment . the amendment identified above will be effective for us beginning with fiscal year 2019. the adoption of the amendments in this update in year ended december 31 , 2019 did not have a material impact on our consolidated financial position and results of operations . in august 2017 , the fasb issued asu 2017-12 , derivatives and hedging ( topic 815 ) , which is intended to improve accounting for hedging activities by expanding and refining hedge accounting for both nonfinancial and financial risk components and aligning the recognition and presentation of the effects of the hedging instrument and the hedged item in the financial statements . the amendments in this update became effective for us beginning with fiscal year 2019. the amendments in this update were required to be applied prospectively . the adoption of the amendments in this update did not have a material impact on our consolidated financial statements for the year ended december 31 , 2019. in july 2019 , the fasb issued asu no . 2019-07 , codification updates to sec sections—amendments to sec paragraphs pursuant to sec final rule releases no . 33-10532 , disclosure update and simplification , and nos . 33-10231 and 33-10442 , investment company reporting modernization , and miscellaneous updates , to align the fasb 's accounting standards codification with requirements of certain already effective sec final rules , which included requiring interim presentation of changes in stockholders ' equity and eliminating certain other disclosures . the amendments in asu no . 2019-07 were effective for us immediately in the third quarter 2019. we previously adopted the related sec final rules in our 2018 annual report and form 10-q for the three months ended march 31 , 2019. the adoption of the amendments in these updates did not have a material impact on our consolidated financial position , results of operations , and disclosures . recently issued accounting pronouncements in june 2016 , the fasb issued asu no . 2016-13 , financial instruments—credit losses ( topic 326 ) : measurement of credit losses on financial instruments , to require the

