The company generated $55 million in profit on $1.5 billion in revenue during the January-to-March period, according to the report.
SpaceX did not immediately respond to a Reuters request for comment.
The space company, which was founded more than two decades ago, was valued at roughly $150 billion at a recent employee stock sale, putting its valuation on par with that of Intel or Walt Disney, the Journal reported.
In 2022, revenue doubled to $4.6 billion, helping the company reduce its loss last year to $559 million from $968 million, the WSJ reported.
The company reported about $5.2 billion in total expenses for 2022, up from $3.3 billion the year earlier, according to the report.
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SpaceX’s first-quarter results are preliminary, while annual results are final, the WSJ reported, citing the documents.