MannKind (NASDAQ: MNKD) CFO adds 5,000 shares via stock purchase plan

Rhea-AI Filing Summary

MannKind Corp's Chief Financial Officer Christopher B. Prentiss acquired additional company stock through a board-approved purchase plan. On March 1, 2026, he obtained 5,000 shares of common stock at $3.27 per share under the Market Price Stock Purchase Plan. Following this transaction, he directly owned 348,854 shares of MannKind common stock.

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

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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^*

Prentiss Christopher B

(Last) (First) (Middle)

1 CASPER STREET

(Street)

DANBURY CT 06810

(City) (State) (Zip)

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)
	Chief Financial Officer

3. Date of Earliest Transaction (Month/Day/Year)
03/01/2026

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

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

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

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	03/01/2026		A(1)		5,000	A	$3.27	348,854	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. The purchase was approved by the Company's Board of Directors on March 1, 2026.

	/s/ Christopher Prentiss	03/03/2026
	** 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).
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FAQ

What insider transaction did MannKind (MNKD) report for Christopher B. Prentiss?

MannKind reported that CFO Christopher B. Prentiss acquired 5,000 shares of common stock. The shares were obtained on March 1, 2026 at $3.27 per share through the company’s Market Price Stock Purchase Plan approved by the Board of Directors.

At what price did the MannKind (MNKD) CFO acquire new shares?

The MannKind CFO acquired shares at $3.27 per share. On March 1, 2026, Christopher B. Prentiss obtained 5,000 MannKind common shares at this market-based price through the company’s Market Price Stock Purchase Plan, which had been approved by the Board.

How many MannKind (MNKD) shares does the CFO own after this Form 4 transaction?

After the transaction, the MannKind CFO directly owned 348,854 shares. Christopher B. Prentiss increased his stake by 5,000 shares through the Market Price Stock Purchase Plan, bringing his total direct holdings in MannKind common stock to 348,854 shares following the March 1, 2026 acquisition.

What type of transaction was reported in the MannKind (MNKD) Form 4 filing?

The Form 4 shows an acquisition of shares, coded as a grant or award. Christopher B. Prentiss obtained 5,000 MannKind common shares through the Issuer’s Market Price Stock Purchase Plan, with the purchase approved by the company’s Board of Directors on March 1, 2026.

Was the MannKind (MNKD) CFO’s share acquisition part of a company plan?

Yes, the CFO’s acquisition was made through MannKind’s Market Price Stock Purchase Plan. The footnote explains that 5,000 shares were purchased under this plan, and the transaction was approved by the company’s Board of Directors on March 1, 2026.

Is the MannKind (MNKD) CFO’s ownership direct or indirect after this transaction?

The MannKind CFO’s ownership is reported as direct after this transaction. Following the March 1, 2026 acquisition of 5,000 shares under the Market Price Stock Purchase Plan, Christopher B. Prentiss directly held a total of 348,854 shares of MannKind common stock.