Rafael R. Lizardi
Senior Vice President and Chief Financial Officer, Finance and Operations at Texas Instruments
Thanks Dave, and good afternoon, everyone. As Dave mentioned, first quarter revenue was $4.9 billion, up 14% from a year ago. Gross profit in the quarter was $3.4 billion or 70% of revenue. From a year ago, gross profit margin increased 500 basis points. As a reminder, we had about $50 million of additional utility expenses in cost of revenue related to the winter storm in the year-ago quarter.
Operating expenses in the quarter were $830 million, about flat from a year ago and about as expected. On a trailing 12-month basis, operating expenses were $3.2 billion or 17% of revenue. Restructuring charges were $66 million in the first quarter and are associated with the LFAB purchase we closed in October of last year.
Operating profit was $2.6 billion in the quarter or 52% of revenue. Operating profit was up 32% from the year-ago quarter. Net income in the first quarter was $2.2 billion or $2.35 per share, which included a $0.02 benefit that was not in our prior outlook.
Let me now comment on our capital management results starting with our cash generation. Cash flow from operations was $2.1 billion in the quarter. Capital expenditures were $443 million in the quarter and $2.6 billion over the last 12 months. Free cash flow on a trailing 12-month basis was $6.5 billion. In the quarter, we paid $1.1 billion in dividends and repurchased $589 million of our stock. In total, we have returned $5 billion in the past 12 months. Over the same period, our dividend represented 62% of free cash flow.
Our balance sheet remained strong with $9.8 billion of cash and short-term investments at the end of the first quarter. Total debt outstanding was $7.8 billion with a weighted average coupon of 2.6%. Inventory dollars were up $150 million from the prior quarter to $2.1 billion and days were 127, up 11 days sequentially, but still below desired levels. For the second quarter, we expect TI revenue in the range of $4.2 billion to $4.8 billion and earnings per share to be in the range of $1.84 to $2.26. This outlook comprehends an impact due to reduced demand from COVID-19 restrictions in China, which are affecting our customers' manufacturing operations. We continue to expect our annual operating tax rate for 2022 to be about 14% and our effective tax rate to be about a point lower.
In closing, we will stay focused in the areas that add value in the long term. We continue to invest in our competitive advantages, which are manufacturing and technology, a broad product portfolio, reach of our channels and diverse and long lived positions. We will continue to strengthen these advantages through disciplined capital allocation and by focusing on the best opportunities, which we believe will enable us to continue to deliver free cash flow per share growth over the long term.
With that, let me turn it back to Dave.