MannKind Corp (MNKD) Insider Acquires 2.57 Million Shares

2 min readBy Investing Point Editorial Team

Michael Castagna, an insider at MannKind Corp (MNKD), recently purchased 2,570,596 shares of the biopharmaceutical company, totaling $11.70 million at a price of $4.55 per share. This significant acquisition, made on December 16, 2025, brings his total holdings in the company to 2,570,596 shares.

MannKind Corp, headquartered in Danbury, Connecticut, specializes in the development and commercialization of innovative therapeutic products aimed at addressing serious unmet medical needs, particularly in the areas of diabetes and pulmonary hypertension. With a market capitalization of $1.6 billion and a P/E ratio of 54.78, the company is actively working on its commercial assets, including Afrezza, an ultra-rapid-acting inhaled insulin.

Insider buying often serves as a strong indicator of confidence in a company's future. Executives like Castagna typically have access to non-public information regarding their company's operations, and their investments can reflect their outlook on the business. However, investors are cautioned to consider insider transactions as just one piece of the puzzle, alongside other fundamental and technical factors.

The upcoming earnings report on August 4, 2026, is anticipated to show an EPS of $0.02 and revenue of $105.2 million, providing further context for evaluating the company's performance and insider activities. As always, examining patterns of insider activity across multiple executives and time periods can yield more comprehensive insights for investors.

This brief was generated from structured financial data and reviewed by the Investing Point editorial team. It is for informational purposes only and does not constitute investment advice. Market data provided by Finnhub.

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