Shares of Aeluma fell after the company widened its loss and had lower revenue in the fourth quarter.

Shares fell 7.4% to $12.44 in after-hours trading Wednesday. The stock closed up 2.3% at $13.43, down 22% this year.

The semiconductor company reported a loss of $4 million, or 22 cents a share, compared with a loss of $859,000, or 5 cents a share, a year earlier.

Revenue fell to $582,000 from $1.32 million a year prior. Revenue primarily came from research and development contracts, the company said.

Aeluma said it is shifting its focus from early-stage R&D contracts with the government to scale and commercialization, citing a letter of intent with the Commerce Department signed in July for up to $30 million in Chips Act funding.

"Fiscal 2027 will focus on technology and product development, and expanding our customer engagements," Chief Executive Jonathan Klamkin said. "We are in discussions with several important prospective customers in the AI datacom industry, negotiating NRE agreements that could support our go-to-market strategy."