Rafael Lizardi
Chief Financial Officer at Texas Instruments
Thanks, Dave, and good afternoon, everyone. As Dave mentioned, third quarter revenue was $5.2 billion, up 13% from a year ago. Gross profit in the quarter was $3.6 billion or 69% of revenue. From a year ago, gross profit margin increased 110 basis points. Operating expenses in the quarter were $862 million, up 8% from a year ago and about as expected. On a trailing 12-month basis, operating expenses were $3.3 billion or 16% of revenue. Restructuring charges were $77 million in the third quarter and are associated with the LFAB factory that we purchased in October of last year. These charges will move to cost of revenue as we start production. The assets associated with the acquisition of the factory will begin to depreciate at the same time.
Moving on, operating profit was $2.7 billion in the quarter or 51% of revenue. Operating profit was up 16% from the year-ago quarter. Coming to the third quarter was $2.3 billion or $2.47 per share. Earnings per share included a $0.02 benefit for items that were not in our original guidance.
Let me now comment on our capital management results starting with our cash generation. Cash flow from operations was $2.8 billion in the quarter, capital expenditures were $790 million in the quarter and $3.1 billion over the last 12 months. Free cash flow-on a trailing 12 month basis was $5.9 billion. In the quarter, we paid $1.1 billion in dividends and repurchased $1 billion of our stock. In total, we have returned $7.1 billion in the past 12 months.
In September, we announced we would increase our dividend by 8% marking our 19th consecutive year of dividend increases. We also increased our share repurchase authorization by $15 billion. These actions reflect our commitment to return our free cash flow to our owners. Our balance sheet remains strong with $9.1 billion of cash and short-term investments at the end-of-the third quarter. In the quarter, we issued $700 million in debt, total debt outstanding was $8 billion with a weighted average coupon of 2.8%.
Inventory dollars were up $205 million from the prior quarter to $2.4 billion and days were 133, up eight days sequentially and below desired levels. For the fourth quarter, we expect TI revenue in the range of USD4.4 billion to USD4.8 billion and earnings per share to be in the range of USD1.83 to USD2 and cents. This outlook comprehends market conditions that Dave previously mentioned.
We continue to expect our 2022 effective tax rate to be about 14%. As you're looking at your models for 2023, without additional changes to tax law, we would expect our effective tax rate to remain above what it is in 2022, we've had similar quarterly profile.
Let me now make a few comments on the Chips Act that was recently signing to law. The combination of the investment tax credit, the grants as well as funding for research and development will help make the U.S. semiconductor industry more competitive. We accrued about $50 million on the balance sheet in third quarter due to the 25% investment tax credit for investments in our U.S. factories. This will eventually flow down statement as lower depreciation and we will receive the associated cash benefit in the future.
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, our 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 growth over the long term. With that, let me turn it back to Dave.