NASDAQ:MNKD

Mannkind Stock Insider Trading

Healthcare > Biotechnology

Buy MNKD

*Your capital is at risk

$3.36

-0.0700 (-2.04%)

At Close: Jun 03, 2026

MannKind Stock Insider Power

Based on the 100 latest insides trades, we have calculated the insider power to be negative at -12.18. In total, the insiders bought 8.03M and sold 1.36M MNKD shares in the last 100 trades. The insider score can be negative despite buy/sell ratio being positive. The score focuses on the quality of the trades.

Insider Power (Last 100 transactions)	-12.18
● Buy	8.03M shares
● Sell	1.36M shares
62% Buy Activity Moderate Negative Correlation
Buy Signal Low Confidence Mar 23, 2026 Analysis Breakdown: Weakened by a contradictory negative Insider Power Score. Confidence increased due to high data reliability score of 100.

Historical Insider Trades

Date	Type	Person	Role	Amount
Mar 23, 2026 Buy	Employee Stock Option (right to buy) A-Award	Ahuja Ajay Chief Medical Officer	Officer	217 000 Value: $529.5K
Mar 23, 2026 Buy	Performance Restricted Stock Unit A-Award	Ahuja Ajay Chief Medical Officer	Officer	221 000 Value: $539.2K
Mar 23, 2026 Buy	Employee Stock Option (right to buy) A-Award	Singh Sanjay R EVP Technical Operations	Officer	217 000 Value: $529.5K
Mar 23, 2026 Buy	Performance Restricted Stock Unit A-Award	Singh Sanjay R EVP Technical Operations	Officer	221 000 Value: $539.2K
Mar 23, 2026 Buy	Performance Restricted Stock Unit A-Award	Prentiss Christopher B Chief Financial Officer	C-Suite Officer	221 000 Value: $539.2K
Mar 23, 2026 Buy	Employee Stock Option (right to buy) A-Award	Prentiss Christopher B Chief Financial Officer	C-Suite Officer	217 000 Value: $529.5K
Mar 23, 2026 Buy	Performance Restricted Stock Unit A-Award	Castagna Michael Chief Executive Officer	CEO / President	796 000 Value: $1.94M
Mar 23, 2026 Buy	Employee Stock Option (right to buy) A-Award	Castagna Michael Chief Executive Officer	CEO / President	782 000 Value: $1.91M
Mar 10, 2026 Buy	Common Stock J-Other	Castagna Michael Insider	Other	0 Value: $0
Mar 10, 2026 Buy	Common Stock, $0.01 Par Value P-Purchase	Castagna Michael Chief Executive Officer	CEO / President	100 000 Value: $259.0K
Mar 01, 2026 Buy	Common Stock, $0.01 Par Value A-Award	Shannon James Samuel Director	Director	12 000 Value: $39.2K
Mar 01, 2026 Buy	Common Stock, $0.01 Par Value A-Award	Hooper Anthony C Director	Director	35 000 Value: $114.5K
Mar 01, 2026 Buy	Common Stock, $0.01 Par Value A-Award	Prentiss Christopher B Chief Financial Officer	C-Suite Officer	5 000 Value: $16.4K
Mar 01, 2026 Buy	Common Stock, $0.01 Par Value A-Award	Castagna Michael Chief Executive Officer	CEO / President	15 290 Value: $50.0K
Mar 01, 2026 Buy	Common Stock, $0.01 Par Value A-Award	Tross Stuart A Chief People & Workpl Officer	Officer	15 290 Value: $50.0K
Feb 26, 2026 Buy	Employee Stock Option (right to buy) A-Award	Castagna Michael Chief Executive Officer	CEO / President	57 750 Value: $87.8K
Feb 26, 2026 Buy	Employee Stock Option (right to buy) A-Award	Castagna Michael Chief Executive Officer	CEO / President	37 525 Value: $53.3K
Feb 26, 2026 Buy	Employee Stock Option (right to buy) A-Award	Castagna Michael Chief Executive Officer	CEO / President	50 000 Value: $227.5K
Feb 26, 2026 Buy	Employee Stock Option (right to buy) A-Award	Binder Steven B. Director	Director	45 025 Value: $66.2K
Feb 26, 2026 Buy	Employee Stock Option (right to buy) A-Award	Thomson David EVP Genl Counsel & Secretary	Officer	37 525 Value: $53.3K
Feb 26, 2026 Buy	Employee Stock Option (right to buy) A-Award	Thomson David EVP Genl Counsel & Secretary	Officer	20 000 Value: $91.0K
Feb 26, 2026 Buy	Employee Stock Option (right to buy) A-Award	Tross Stuart A Chief People & Workpl Officer	Officer	28 143 Value: $40.0K
Feb 26, 2026 Buy	Employee Stock Option (right to buy) A-Award	Tross Stuart A Chief People & Workpl Officer	Officer	20 000 Value: $91.0K
Jan 08, 2026 Sell	Common Stock, $0.01 Par Value S-Sale	Tross Stuart A Chief People & Workpl Officer	Officer	47 006 Value: $297.5K
Dec 24, 2025 Sell	Common Stock, $0.01 Par Value G-Gift	Castagna Michael Chief Executive Officer	CEO / President	44 171 Value: $0

About Insider Power

Insider Power is a proprietary algorithm developed by StockInvest.us to evaluate the significance of insider transactions. The calculation considers the size, type, and timing of transactions, as well as the insider’s role within the company.

It is important to note that, in general, there is little to no correlation between insider transactions and short-term stock price movements. In one of our studies, only 0.22%^* of stocks with insider activity showed a measurable correlation — and even then, it was unclear whether the effect was caused by insider actions or simply by the stock’s broader trend.

While our algorithms are designed to highlight potentially meaningful signals, these cannot be regarded as statistically significant on their own. Insider trading activity should therefore be seen as informative rather than as direct trading guidance. The Insider Power metric was created to present this information in a clearer and more accessible way, helping investors better understand the possible context of insider activity.

* October 6th, 2025 - Tested on 5562 stocks

ABOUT MANNKIND CORPORATION

MannKind Corporation, a biopharmaceutical company, focuses on the development and commercialization of inhaled therapeutic products for endocrine and orphan lung diseases in the United States. It offers Afrezza, an inhaled insulin used to improve glycemic control in adults with diabetes. It also promotes Thyquidity to adult and pediatric endocrinologists, and other healthcare providers for the treatment of hypothyroidism. The company has a licens...

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