Investing.com -- 3M posted better-than-expected first-quarter earnings on Tuesday, sending shares higher, though its full-year profit outlook came in just below analyst expectations.

Shares in the U.S. industrial conglomerate initially rose in premarket trading but then reversed course to trade 1% lower by 06:43 ET.

The company reported adjusted earnings of $2.14 per share, topping the analyst estimate of $1.98, on revenue of $6 billion, just shy of the $6.01 billion consensus. Organically, sales grew 1.2% year-over-year.

Adjusted operating margin came in at 23.8%, up 30 basis points from the same period a year ago. Operating cash flow for the quarter was $0.6 billion, with adjusted free cash flow of $0.5 billion.

"We are executing on 3M’s value creation framework to build a stronger company," said William Brown, 3M Chairman and CEO. "Our focus remains on improving execution of the fundamentals and transforming the company by simplifying and standardizing our processes and footprint and reshaping the portfolio."

For the full year, 3M projected adjusted earnings of $8.50 to $8.70 per share, slightly below the consensus estimate of $8.65 at the midpoint.

The company also forecast adjusted total sales growth of approximately 4%, reflecting organic sales growth of around 3%, alongside adjusted operating income margin expansion of 70 to 80 basis points.