Shares of Rubrik Inc. (RBRK) plummeted 6.15% in Tuesday's trading session following the company's announcement of a proposed $1 billion convertible senior notes offering. The cybersecurity firm, backed by Microsoft, saw its stock price fall as investors reacted to potential share dilution concerns.

Rubrik plans to offer $1 billion in aggregate principal amount of Convertible Senior Notes due 2030, with an option for initial purchasers to buy an additional $150 million. The company intends to use the net proceeds for several strategic purposes, including:

• Funding capped call transactions to mitigate potential dilution upon conversion of the notes
• Repaying approximately $328 million of outstanding loans and terminating its existing credit agreement
• Financing potential acquisitions or strategic investments
• Supporting working capital and other general corporate purposes

While the capital raise aims to enhance Rubrik's financial flexibility, the market's negative reaction reflects concerns about the dilutive effect of convertible notes on existing shareholders. Despite the day's sharp decline, it's worth noting that Rubrik's stock has still performed well year-to-date, with a 42.5% gain as of Monday's close. The company, which went public in April 2024 at $32 per share, maintains a market capitalization of approximately $18 billion based on about 193.4 million shares outstanding as of May 31.