MannKind director granted 82,781 RSUs

MUNDKUR CHRISTINE reported acquisition or exercise transactions in this Form 4 filing.

Rhea-AI Filing Summary

MUNDKUR CHRISTINE reported acquisition or exercise transactions in this Form 4 filing.

MannKind Corp director Christine Mundkur reported a new equity award and clarified prior holdings. She received a grant of 82,781 restricted stock units, each representing a contingent right to receive one share of MannKind common stock.

The restricted stock units vested on May 20, 2026, but the underlying shares will not be delivered until she separates from service on MannKind’s board of directors. Following the reported activity, she directly holds 27,675 shares of MannKind common stock. A footnote states that 226,818 shares representing deferred restricted stock units were inadvertently included in earlier reported common stock holdings.

Insider Trade Summary

Grant/Award: 82,781 shares

Grant/Award 2 txns

Insider MUNDKUR CHRISTINE

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Restricted Stock Unit	82,781	$0.00	$0.00
holding	Common Stock $0.01 Par Value	--	--	--

Holdings After Transaction: Restricted Stock Unit — 82,781 contracts (Direct); Common Stock $0.01 Par Value — 27,675 shares (Direct)

Footnotes (3)

1. F1. 226,818 shares representing deferred restricted stock units were inadvertently included in Table I holdings on prior filings.
2. F2. Each restricted stock unit represents a contingent right to receive one share of MNKD common stock.
3. F3. Restricted stock unit vested on May 20, 2026, but the shares will not be delivered until there is a separation of service from the board of directors of MannKind Corporation.

Key Figures

Restricted stock units granted: 82,781 units Common shares held after transaction: 27,675 shares Deferred RSUs previously misclassified: 226,818 units +2 more

5 metrics

Restricted stock units granted 82,781 units Grant of restricted stock units reported as derivative transaction

Common shares held after transaction 27,675 shares Direct MannKind common stock holdings following reported activity

Deferred RSUs previously misclassified 226,818 units Deferred restricted stock units inadvertently included in earlier common stock holdings

RSU vesting date May 20, 2026 Restricted stock units vested on this date; share delivery deferred

RSU-to-share ratio 1 unit : 1 share Each restricted stock unit equals one MannKind common share upon settlement

Key Terms

Restricted Stock Unit, deferred restricted stock units, separation of service

3 terms

Restricted Stock Unit financial

"Each restricted stock unit represents a contingent right to receive one share of MNKD common stock."

A restricted stock unit is a promise from a company to give an employee shares of stock after certain conditions are met, like staying with the company for a set amount of time. It’s like earning a bonus that turns into company stock once you’ve proven your commitment, making it a way to motivate and reward employees.

deferred restricted stock units financial

"226,818 shares representing deferred restricted stock units were inadvertently included in Table I holdings on prior filings."

Deferred restricted stock units are promises by a company to give employees or executives company shares at a future date, subject to conditions like continued employment or performance targets; the delivery and tax event are intentionally delayed. They matter to investors because they affect when new shares may be issued and how executives are motivated—like a paycheck held in escrow that vests over time, influencing potential share dilution and management behavior.

separation of service financial

"the shares will not be delivered until there is a separation of service from the board of directors"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transaction did MNKD director Christine Mundkur report?

Christine Mundkur reported a grant of 82,781 restricted stock units. Each restricted stock unit represents a contingent right to receive one share of MannKind common stock, providing equity-based compensation tied directly to the company’s stock performance over time.

How many MannKind (MNKD) shares does Christine Mundkur hold after this Form 4?

After the reported activity, Christine Mundkur directly holds 27,675 MannKind common shares. This figure reflects her Table I common stock position as of the transaction date, separate from the newly reported restricted stock units disclosed in the derivative section.

When do Christine Mundkur’s 82,781 MannKind restricted stock units settle?

The 82,781 restricted stock units vested on May 20, 2026, but shares will not be delivered until she experiences a separation of service from MannKind’s board. This means actual common shares are deferred until her board tenure ends.

What does each restricted stock unit in MNKD’s grant to Mundkur represent?

Each restricted stock unit represents a contingent right to receive one share of MannKind common stock. These units do not deliver shares immediately; instead, they convert into common shares upon the specified settlement condition being satisfied.

Did the Form 4 for MNKD note any correction to Christine Mundkur’s prior reported holdings?

A footnote explains that 226,818 shares representing deferred restricted stock units were inadvertently included in prior Table I holdings. This clarifies that those deferred RSUs should not have been counted as outstanding common stock previously.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 05/22/2026 - 08:48 PM Learn about SEC filing dates

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^*

MUNDKUR CHRISTINE

(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)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

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								27,675(1)	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
Restricted Stock Unit	(2)	05/20/2026		A(3)		82,781		(3)	(3)	Common Stock, $0.01 Par Value	82,781	$0	82,781	D

Explanation of Responses:

1. 226,818 shares representing deferred restricted stock units were inadvertently included in Table I holdings on prior filings.

2. Each restricted stock unit represents a contingent right to receive one share of MNKD common stock.

3. Restricted stock unit vested on May 20, 2026, but the shares will not be delivered until there is a separation of service from the board of directors of MannKind Corporation.

	/s/ Christine Mundkur	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)