[Form 4] MANNKIND CORP Insider Trading Activity

Rhea-AI Filing Summary

MannKind Corp executive Dominic Marasco, President of the Endocrine Business Unit, reported an acquisition of company stock through a compensation-related plan. He received 8,474 shares of common stock at $2.95 per share under the issuer's Market Price Stock Purchase Plan, which was approved by the board on May 20, 2026. Following this award, his directly held position increased to 344,246 shares of common stock, which includes 2,343 shares acquired under the issuer's Employee Stock Purchase Plan on December 31, 2025.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Marasco Dominic

Role Pres, Endocrine Business Unit

Type	Security	Shares	Price	Value
Grant/Award	Common Stock, $0.01 Par Value	8,474	$2.95	$25K

Holdings After Transaction: Common Stock, $0.01 Par Value — 344,246 shares (Direct, null)

Footnotes (1)

1. The securities were purchased through the Issuer's Market Price Stock Purchase Plan effective May 29, 2018. The purchase was approved by the Company's Board of Directors on May 20, 2026. Includes 2,343 shares acquired under the Issuer's Employee Stock Purchase Plan on December 31, 2025.

Key Figures

Shares granted: 8,474 shares Grant price: $2.95 per share Total shares after transaction: 344,246 shares +1 more

4 metrics

Shares granted 8,474 shares Acquired under Market Price Stock Purchase Plan on May 20, 2026

Grant price $2.95 per share Price for 8,474-share acquisition

Total shares after transaction 344,246 shares Direct holdings following the award

ESPP shares included 2,343 shares Acquired under Employee Stock Purchase Plan on December 31, 2025

Key Terms

Market Price Stock Purchase Plan, Employee Stock Purchase Plan, Common Stock, $0.01 Par Value

3 terms

Market Price Stock Purchase Plan financial

"The securities were purchased through the Issuer's Market Price Stock Purchase Plan effective May 29, 2018."

Employee Stock Purchase Plan financial

"Includes 2,343 shares acquired under the Issuer's Employee Stock Purchase Plan on December 31, 2025."

An employee stock purchase plan is a company program that lets workers buy shares through small payroll deductions, often at a discount to the market price and after a set offering period. Think of it like a workplace savings plan that turns into ownership: it encourages employees to share in the company’s success and can create predictable buying or selling of stock that investors watch because it affects supply, demand and employee incentives.

Common Stock, $0.01 Par Value financial

"security_title: Common Stock, $0.01 Par Value"

Form 4 Insider Transactions: What Each Field Means →

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Marasco Dominic

(Last) (First) (Middle)

1 CASPER STREET

(Street)

DANBURY CONNECTICUT 06810

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
MANNKIND CORP [ MNKD ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Pres, Endocrine Business Unit

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/20/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock, $0.01 Par Value	05/20/2026		A(1)		8,474	A	$2.95	344,246(2)	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. The securities were purchased through the Issuer's Market Price Stock Purchase Plan effective May 29, 2018. The purchase was approved by the Company's Board of Directors on May 20, 2026.

2. Includes 2,343 shares acquired under the Issuer's Employee Stock Purchase Plan on December 31, 2025.

	/s/ Dominic Marasco	05/22/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

FAQ

What did MannKind (MNKD) executive Dominic Marasco report in this Form 4?

Dominic Marasco reported acquiring 8,474 shares of MannKind common stock. The shares were obtained through the company’s Market Price Stock Purchase Plan and approved by the board, reflecting a compensation-related stock award rather than an open-market purchase.

At what price were the MannKind (MNKD) shares acquired in the reported transaction?

The reported 8,474 MannKind shares were acquired at $2.95 per share. This price is tied to the company’s Market Price Stock Purchase Plan, which grants stock based on market pricing rather than a discretionary open-market trade by the executive.

How many MannKind (MNKD) shares does Dominic Marasco hold after this transaction?

After the transaction, Dominic Marasco directly holds 344,246 MannKind shares. This total includes the newly acquired 8,474 shares and 2,343 shares previously obtained under the company’s Employee Stock Purchase Plan on December 31, 2025.

What plans were involved in Dominic Marasco’s MannKind (MNKD) share acquisitions?

The 8,474 shares were acquired through MannKind’s Market Price Stock Purchase Plan, approved on May 20, 2026. His reported holdings also include 2,343 shares gained earlier under the company’s Employee Stock Purchase Plan on December 31, 2025.

Is the MannKind (MNKD) Form 4 transaction an open-market buy or a grant?

The Form 4 characterizes the event as a grant or award acquisition, not an open-market buy. The shares were obtained through the Market Price Stock Purchase Plan, a company program approved by the board, rather than a discretionary market purchase.