Shares of Quantum Computing Inc. (QUBT) plummeted 6.27% in pre-market trading on Tuesday, following news of significant insider selling by the company's Chief Financial Officer, Christopher Boehmler. The sharp decline comes despite the company's announcement of shipping its first commercial entangled photon source, highlighting investors' concerns about the recent insider transactions.

According to recent filings, Boehmler sold approximately 272,400 shares for a total of $4.59 million between June 9-11. This transaction represented about 25% of his holdings, including equity and vested options. The substantial reduction in the CFO's stake has raised eyebrows among investors, potentially signaling a lack of confidence in the company's near-term prospects.

In a concurrent development, Quantum Computing Inc. announced that it had shipped its first commercial entangled photon source to an unnamed research institution in South Korea. The product, a broadband entangled photon source operating in the C-band telecommunication range, is designed to support research in quantum networking and secure communications. However, this positive news seems to have been overshadowed by the insider selling, as investors grapple with mixed signals about the company's future.