MANNKIND CORP — Director's Dealing 2025

Dec 19, 2025

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: MANNKIND CORP (MNKD)
CIK: 0000899460
Period of Report: 2025-12-17

Reporting Person: Castagna Michael (N/A)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2025-12-17	Common Stock, $0.01 Par Value	M	65804	$4.55	Acquired	2570596	Direct
2025-12-17	Common Stock, $0.01 Par Value	S	65804	$6.01	Disposed	2504792	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2025-12-17	Employee Stock Option (Right to Buy)	$4.55	M	15804	Disposed	2026-05-19	Common Stock, $0.01 Par Value (15804)	Direct
2025-12-17	Employee Stock Option (Right to Buy)	$4.55	M	50000	Disposed	2026-05-19	Common Stock, $0.01 Par Value (50000)	Direct

Footnotes

F1: Transaction occurred pursuant to Rule 10b5-1 Plan established August 8, 2025.

F2: The weighted average sales price of the reported transaction was $6.01 based on a range of prices between $6.00 and $6.04. Upon request by the SEC staff, the Issuer, or any security holder of the Issuer, full information regarding the number of shares sold at each separate price will be provided.