subsequent to december 31 , 2018 , we purchased an additional $ 150 million of our issued and outstanding common stock under the 2018 share repurchase program . on february 13 , 2019 , our board of directors increased the authorization amount of our 2018 share repurchase program from $ 750 million to $ 1.0 billion . 34 the chemours company our results of operations and business highlights the following table sets forth our results of operations for the years ended december 31 , 2018 , 2017 , and 2016. replace_table_token_2_th net sales the following table sets forth the impacts of price , volume , currency , and portfolio and or other changes on our total net sales for the years ended december 31 , 2018 and 2017. replace_table_token_3_th our net sales increased by $ 455 million ( or 7 % ) to $ 6.6 billion for the year ended december 31 , 2018 , compared with net sales of $ 6.2 billion for the same period in 2017. the increase in our net sales for the year ended december 31 , 2018 was primarily attributable to a 7 % increase in price , driven by higher average global selling prices for ti-pure tm tio 2 pigment in our titanium technologies segment , improved pricing for fluoropolymers products in our fluoroproducts segment , and higher average selling prices across all product lines in our chemical solutions segment . in addition , net sales for the year ended december 31 , 2018 increased by 1 % from favorable foreign currency movements . these increases were partially offset by a 1 % decrease in volume , which was primarily attributable to lower demand for ti-pure tm tio 2 pigment in our titanium technologies segment . our net sales increased by $ 783 million ( or 15 % ) to $ 6.2 billion for the year ended december 31 , 2017 , compared with net sales of $ 5.4 billion for the same period in 2016. the increase in our net sales for the year ended december 31 , 2017 was primarily attributable to an 11 % increase in volume , driven by higher demand for ti-pure tm tio 2 pigment in our titanium technologies segment , the increased adoption of opteon tm refrigerants and higher demand for fluoropolymers products in our fluoroproducts segment , and increased volume across most businesses in the chemical solutions segment . in addition , net sales for the year ended december 31 , 2017 increased by 8 % due to an increase in price , driven by higher average global selling prices for ti-pure tm tio 2 pigment in our titanium technologies segment , and improved pricing for base refrigerants in our fluoroproducts segment . these increases were partially offset by portfolio changes in our chemical solutions segment , which reduced net sales by 4 % . 35 the chemours company cost of goods sold our cost of goods sold ( “ cogs ” ) increased by $ 229 million ( or 5 % ) to $ 4.7 billion for the year ended december 31 , 2018 , compared with cogs of $ 4.4 billion for the same period in 2017. the increase in our cogs for the year ended december 31 , 2018 was primarily attributable to higher costs for certain raw materials , higher distribution , freight , and logistics expenses , and process waste water treatment costs . these increases were partially offset by lower costs associated with our transformation activities , and lower performance-related compensation expenses . our cogs increased by $ 141 million ( or 3 % ) to $ 4.4 billion for the year ended december 31 , 2017 , compared with cogs of $ 4.3 billion for the same period in 2016. the increase in our cogs for the year ended december 31 , 2017 was primarily attributable to increases in volume , as well as increases in costs associated with our transformation activities and higher performance-related compensation expenses . these increases were partially offset by the impacts of portfolio changes in our chemical solutions segment . selling , general , and administrative expense our selling , general , and administrative ( “ sg & a ” ) expense increased by $ 31 million ( or 5 % ) to $ 657 million for the year ended december 31 , 2018 , compared with sg & a expense of $ 626 million for the same period in 2017. the increase in our sg & a expense for the year ended december 31 , 2018 was primarily attributable to the accrual of an additional estimated liability for ongoing legal matters at our fayetteville works site in fayetteville , north carolina . this increase was partially offset by lower costs associated with our transformation activities , and lower performance-related compensation expenses . our sg & a expense decreased by $ 320 million ( or 34 % ) to $ 626 million for the year ended december 31 , 2017 , compared with sg & a expense of $ 946 million for the same period in 2016. the decrease in our sg & a expense for the year ended december 31 , 2017 was primarily attributable to the 2016 accrual of $ 335 million in legal costs in connection with the pfoa mdl settlement , as well as lower management and administrative expenses resulting from the sales of our clean & disinfect ( “ c & d ” ) and sulfur businesses in 2016. these decreases were partially offset by increases in costs associated with our transformation activities , and higher performance-related compensation expenses . story_separator_special_tag the increases to segment adjusted ebitda and segment adjusted ebitda margin for the year ended december 31 , 2017 were primarily attributable to cost reductions from the aforementioned portfolio changes , as well as increases in volume and price for the segment 's remaining businesses . titanium technologies the following chart sets forth the net sales , adjusted ebitda , and adjusted ebitda margin amounts for our titanium technologies segment for the years ended december 31 , 2018 , 2017 , and 2016. replace_table_token_9_th 41 the chemours company the following table sets forth the impacts of price , volume , currency , and portfolio and or other changes on our titanium technologies segment 's net sales for the years ended december 31 , 201 8 and 2017 . replace_table_token_10_th segment net sales segment net sales increased by $ 216 million ( or 7 % ) to $ 3.2 billion for the year ended december 31 , 2018 , compared with segment net sales of $ 3.0 billion for the same period in 2017. the increase to segment net sales for the year ended december 31 , 2018 was primarily attributable to a 12 % increase in price , driven by higher average global selling prices for our ti-pure tm tio 2 pigment , and a 1 % increase from favorable foreign currency movements . these increases were partially offset by a 6 % decrease in volume , which was the result of lower demand for our ti-pure tm tio 2 pigment when compared with the same period in 2017. segment net sales increased by $ 594 million ( or 25 % ) to $ 3.0 billion for the year ended december 31 , 2017 , compared with segment net sales of $ 2.4 billion for the same period in 2016. the increase to segment net sales for the year ended december 31 , 2017 was primarily attributable to a 17 % increase in price , driven by higher average global selling prices for our ti-pure tm tio 2 pigment , and an 8 % increase in volume , driven by higher global demand for our ti-pure tm tio 2 pigment across most regions . segment adjusted ebitda and adjusted ebitda margin segment adjusted ebitda increased by $ 193 million ( or 22 % ) to $ 1.1 billion and segment adjusted ebitda margin increased by approximately 400 basis points to 33 % for the year ended december 31 , 2018 , compared with segment adjusted ebitda of $ 862 million and segment adjusted ebitda margin of 29 % for the same period in 2017. the increases to segment adjusted ebitda and segment adjusted ebitda margin for the year ended december 31 , 2018 were primarily attributable to the aforementioned increases in price and currency . these increases were partially offset by the aforementioned decrease in volume , as well as higher costs for certain raw materials and higher freight and logistics expenses . segment adjusted ebitda increased by $ 396 million ( or 85 % ) to $ 862 million and segment adjusted ebitda margin increased by approximately 900 basis points to 29 % for the year ended december 31 , 2017 , compared with segment adjusted ebitda of $ 466 million and segment adjusted ebitda margin of 20 % for the same period in 2016. the increases to segment adjusted ebitda and segment adjusted ebitda margin for the year ended december 31 , 2017 were primarily attributable to the aforementioned increases in price and volume . these increases were partially offset by higher performance-related compensation expenses , higher costs associated with our transformation activities , and higher costs for certain raw materials . corporate and other corporate costs and certain legacy legal and environmental expenses , stock-based compensation costs , and foreign exchange gains and losses arising from the remeasurement of balances in currencies other than the functional currency of our legal entities are reflected in corporate and other . corporate and other costs were largely unchanged for the years ended december 31 , 2018 and 2017 at $ 162 million and $ 166 million , respectively . corporate and other costs increased by $ 38 million ( or 30 % ) to $ 166 million for the year ended december 31 , 2017 , compared with corporate and other costs of $ 128 million for the same period in 2016. the increase in corporate and other costs for the year ended december 31 , 2017 was primarily attributable to increases in costs associated with legacy environmental and legal issues , as well as higher performance-related compensation expenses . 42 the chemours company 201 9 outlook our 2019 results will be driven by the following expectations : ( i ) 2019 volume for our titanium technologies segment will be below 2018 volume levels ; ( ii ) there will be continued transition to opteon tm refrigerants , as well as increased demand for fluoropolymers products in our fluoroproducts segment ; and , ( iii ) there will be continued demand for mining solutions products in our chemical solutions segment . we expect that our capital expenditures will be approximately $ 500 million . our outlook for 2019 reflects our current visibility and expectations based on market factors , such as currency movements , macro-economic factors , and end-market demand . our ability to meet these expectations are subject to numerous risks , including , but not limited to , those described in item 1a – risk factors . liquidity and capital resources our primary sources of liquidity are cash generated from operations , available cash , and borrowings under our debt financing arrangements , which are described in further detail in “ note 19 – debt ” to the consolidated financial statements . we believe these sources are sufficient to fund our planned operations and to meet our interest , dividend , and contractual obligations . our financial policy seeks to : ( i ) selectively invest in organic

cash flows the following table sets forth a summary of our net cash provided by ( used for ) operating , investing , and financing activities for the years ended december 31 , 2018 , 2017 , and 2016. replace_table_token_11_th operating activities we received $ 1.1 billion , $ 640 million , and $ 594 million in cash flows from our operating activities for the years ended december 31 , 2018 , 2017 , and 2016 , respectively . the increase in our operating cash inflows for the year ended december 31 , 2018 was primarily attributable to an improvement in our net income compared with the same period in 2017 , and our payment of the $ 335 million liability to settle the pfoa mdl settlement in 2017 , which negatively impacted our operating cash flows from working capital . the increase in our operating cash inflows for the year ended december 31 , 2017 was primarily attributable to an improvement in our net income compared with the same period in 2016 , which was partially offset by a decrease to our operating cash flows from working capital for the aforementioned payment of the pfoa mdl settlement liability , as well as other changes in our operating assets and liabilities .


 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.
     ```cash flows the following table sets forth a summary of our net cash provided by ( used for ) operating , investing , and financing activities for the years ended december 31 , 2018 , 2017 , and 2016. replace_table_token_11_th operating activities we received $ 1.1 billion , $ 640 million , and $ 594 million in cash flows from our operating activities for the years ended december 31 , 2018 , 2017 , and 2016 , respectively . the increase in our operating cash inflows for the year ended december 31 , 2018 was primarily attributable to an improvement in our net income compared with the same period in 2017 , and our payment of the $ 335 million liability to settle the pfoa mdl settlement in 2017 , which negatively impacted our operating cash flows from working capital . the increase in our operating cash inflows for the year ended december 31 , 2017 was primarily attributable to an improvement in our net income compared with the same period in 2016 , which was partially offset by a decrease to our operating cash flows from working capital for the aforementioned payment of the pfoa mdl settlement liability , as well as other changes in our operating assets and liabilities .
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 Suspicious Activity Report : subsequent to december 31 , 2018 , we purchased an additional $ 150 million of our issued and outstanding common stock under the 2018 share repurchase program . on february 13 , 2019 , our board of directors increased the authorization amount of our 2018 share repurchase program from $ 750 million to $ 1.0 billion . 34 the chemours company our results of operations and business highlights the following table sets forth our results of operations for the years ended december 31 , 2018 , 2017 , and 2016. replace_table_token_2_th net sales the following table sets forth the impacts of price , volume , currency , and portfolio and or other changes on our total net sales for the years ended december 31 , 2018 and 2017. replace_table_token_3_th our net sales increased by $ 455 million ( or 7 % ) to $ 6.6 billion for the year ended december 31 , 2018 , compared with net sales of $ 6.2 billion for the same period in 2017. the increase in our net sales for the year ended december 31 , 2018 was primarily attributable to a 7 % increase in price , driven by higher average global selling prices for ti-pure tm tio 2 pigment in our titanium technologies segment , improved pricing for fluoropolymers products in our fluoroproducts segment , and higher average selling prices across all product lines in our chemical solutions segment . in addition , net sales for the year ended december 31 , 2018 increased by 1 % from favorable foreign currency movements . these increases were partially offset by a 1 % decrease in volume , which was primarily attributable to lower demand for ti-pure tm tio 2 pigment in our titanium technologies segment . our net sales increased by $ 783 million ( or 15 % ) to $ 6.2 billion for the year ended december 31 , 2017 , compared with net sales of $ 5.4 billion for the same period in 2016. the increase in our net sales for the year ended december 31 , 2017 was primarily attributable to an 11 % increase in volume , driven by higher demand for ti-pure tm tio 2 pigment in our titanium technologies segment , the increased adoption of opteon tm refrigerants and higher demand for fluoropolymers products in our fluoroproducts segment , and increased volume across most businesses in the chemical solutions segment . in addition , net sales for the year ended december 31 , 2017 increased by 8 % due to an increase in price , driven by higher average global selling prices for ti-pure tm tio 2 pigment in our titanium technologies segment , and improved pricing for base refrigerants in our fluoroproducts segment . these increases were partially offset by portfolio changes in our chemical solutions segment , which reduced net sales by 4 % . 35 the chemours company cost of goods sold our cost of goods sold ( “ cogs ” ) increased by $ 229 million ( or 5 % ) to $ 4.7 billion for the year ended december 31 , 2018 , compared with cogs of $ 4.4 billion for the same period in 2017. the increase in our cogs for the year ended december 31 , 2018 was primarily attributable to higher costs for certain raw materials , higher distribution , freight , and logistics expenses , and process waste water treatment costs . these increases were partially offset by lower costs associated with our transformation activities , and lower performance-related compensation expenses . our cogs increased by $ 141 million ( or 3 % ) to $ 4.4 billion for the year ended december 31 , 2017 , compared with cogs of $ 4.3 billion for the same period in 2016. the increase in our cogs for the year ended december 31 , 2017 was primarily attributable to increases in volume , as well as increases in costs associated with our transformation activities and higher performance-related compensation expenses . these increases were partially offset by the impacts of portfolio changes in our chemical solutions segment . selling , general , and administrative expense our selling , general , and administrative ( “ sg & a ” ) expense increased by $ 31 million ( or 5 % ) to $ 657 million for the year ended december 31 , 2018 , compared with sg & a expense of $ 626 million for the same period in 2017. the increase in our sg & a expense for the year ended december 31 , 2018 was primarily attributable to the accrual of an additional estimated liability for ongoing legal matters at our fayetteville works site in fayetteville , north carolina . this increase was partially offset by lower costs associated with our transformation activities , and lower performance-related compensation expenses . our sg & a expense decreased by $ 320 million ( or 34 % ) to $ 626 million for the year ended december 31 , 2017 , compared with sg & a expense of $ 946 million for the same period in 2016. the decrease in our sg & a expense for the year ended december 31 , 2017 was primarily attributable to the 2016 accrual of $ 335 million in legal costs in connection with the pfoa mdl settlement , as well as lower management and administrative expenses resulting from the sales of our clean & disinfect ( “ c & d ” ) and sulfur businesses in 2016. these decreases were partially offset by increases in costs associated with our transformation activities , and higher performance-related compensation expenses . story_separator_special_tag the increases to segment adjusted ebitda and segment adjusted ebitda margin for the year ended december 31 , 2017 were primarily attributable to cost reductions from the aforementioned portfolio changes , as well as increases in volume and price for the segment 's remaining businesses . titanium technologies the following chart sets forth the net sales , adjusted ebitda , and adjusted ebitda margin amounts for our titanium technologies segment for the years ended december 31 , 2018 , 2017 , and 2016. replace_table_token_9_th 41 the chemours company the following table sets forth the impacts of price , volume , currency , and portfolio and or other changes on our titanium technologies segment 's net sales for the years ended december 31 , 201 8 and 2017 . replace_table_token_10_th segment net sales segment net sales increased by $ 216 million ( or 7 % ) to $ 3.2 billion for the year ended december 31 , 2018 , compared with segment net sales of $ 3.0 billion for the same period in 2017. the increase to segment net sales for the year ended december 31 , 2018 was primarily attributable to a 12 % increase in price , driven by higher average global selling prices for our ti-pure tm tio 2 pigment , and a 1 % increase from favorable foreign currency movements . these increases were partially offset by a 6 % decrease in volume , which was the result of lower demand for our ti-pure tm tio 2 pigment when compared with the same period in 2017. segment net sales increased by $ 594 million ( or 25 % ) to $ 3.0 billion for the year ended december 31 , 2017 , compared with segment net sales of $ 2.4 billion for the same period in 2016. the increase to segment net sales for the year ended december 31 , 2017 was primarily attributable to a 17 % increase in price , driven by higher average global selling prices for our ti-pure tm tio 2 pigment , and an 8 % increase in volume , driven by higher global demand for our ti-pure tm tio 2 pigment across most regions . segment adjusted ebitda and adjusted ebitda margin segment adjusted ebitda increased by $ 193 million ( or 22 % ) to $ 1.1 billion and segment adjusted ebitda margin increased by approximately 400 basis points to 33 % for the year ended december 31 , 2018 , compared with segment adjusted ebitda of $ 862 million and segment adjusted ebitda margin of 29 % for the same period in 2017. the increases to segment adjusted ebitda and segment adjusted ebitda margin for the year ended december 31 , 2018 were primarily attributable to the aforementioned increases in price and currency . these increases were partially offset by the aforementioned decrease in volume , as well as higher costs for certain raw materials and higher freight and logistics expenses . segment adjusted ebitda increased by $ 396 million ( or 85 % ) to $ 862 million and segment adjusted ebitda margin increased by approximately 900 basis points to 29 % for the year ended december 31 , 2017 , compared with segment adjusted ebitda of $ 466 million and segment adjusted ebitda margin of 20 % for the same period in 2016. the increases to segment adjusted ebitda and segment adjusted ebitda margin for the year ended december 31 , 2017 were primarily attributable to the aforementioned increases in price and volume . these increases were partially offset by higher performance-related compensation expenses , higher costs associated with our transformation activities , and higher costs for certain raw materials . corporate and other corporate costs and certain legacy legal and environmental expenses , stock-based compensation costs , and foreign exchange gains and losses arising from the remeasurement of balances in currencies other than the functional currency of our legal entities are reflected in corporate and other . corporate and other costs were largely unchanged for the years ended december 31 , 2018 and 2017 at $ 162 million and $ 166 million , respectively . corporate and other costs increased by $ 38 million ( or 30 % ) to $ 166 million for the year ended december 31 , 2017 , compared with corporate and other costs of $ 128 million for the same period in 2016. the increase in corporate and other costs for the year ended december 31 , 2017 was primarily attributable to increases in costs associated with legacy environmental and legal issues , as well as higher performance-related compensation expenses . 42 the chemours company 201 9 outlook our 2019 results will be driven by the following expectations : ( i ) 2019 volume for our titanium technologies segment will be below 2018 volume levels ; ( ii ) there will be continued transition to opteon tm refrigerants , as well as increased demand for fluoropolymers products in our fluoroproducts segment ; and , ( iii ) there will be continued demand for mining solutions products in our chemical solutions segment . we expect that our capital expenditures will be approximately $ 500 million . our outlook for 2019 reflects our current visibility and expectations based on market factors , such as currency movements , macro-economic factors , and end-market demand . our ability to meet these expectations are subject to numerous risks , including , but not limited to , those described in item 1a – risk factors . liquidity and capital resources our primary sources of liquidity are cash generated from operations , available cash , and borrowings under our debt financing arrangements , which are described in further detail in “ note 19 – debt ” to the consolidated financial statements . we believe these sources are sufficient to fund our planned operations and to meet our interest , dividend , and contractual obligations . our financial policy seeks to : ( i ) selectively invest in organic

