million in the third quarter 2020. The increase reflects solid cost management and reduced restructuring costs. ADI Global Distribution operating profit increased to $73 million in the third quarter 2021 from $56 million in the third quarter 2020, reflecting improved gross margin, partially offset by increased investment activity. Corporate costs were $63 million in the third quarter 2021, down $3 million from $66 million in the prior year comparable period primarily due to reduced spin and restructuring costs partially offset by a $9 million impairment charge related to the Austin, Texas office relocation.
Net income for the third quarter 2021 was $68 million, or $0.46 per diluted common share, compared with net income of $75 million, or $0.60 per diluted common share, in the third quarter 2020.
Cash Flow and Liquidity
The company reported net cash provided by operating activities of $104 million for the third quarter 2021, an increase of $83 million from the prior year comparable period. The higher operating cash generation was primarily the result of better operating profitability and more favorable working capital trends. On October 2, 2021, Resideo had cash and cash equivalents of $686 million and total outstanding debt of $1.2 billion.
Outlook
The company today updated its outlook for 2021 and now expects full year revenue to be in the range of $5.83 billion to $5.88 billion, gross profit margin in the range of 26.5% to 27.0% and operating profit in the range of $558 million to $568 million.
The company expects fourth quarter 2021 revenue to be in the range of $1.44 billion to $1.49 billion, gross profit margin in the range of 27% to 28% and operating profit in the range of $140 million to $150 million.
Management Remarks
“We delivered another quarter of strong growth and profitability expansion as we continue to execute on our business transformation,” commented Jay Geldmacher, Resideo’s president and CEO. “End customer demand remains healthy across our businesses, but our ability to fully meet this demand is being constrained by ongoing supply chain and logistics challenges.