MANNKIND exec shares withheld for RSU taxes

MANNKIND CORP Chief People & Workplace Officer Stuart A. Tross reported a routine tax-related share disposition.

Rhea-AI Filing Summary

MANNKIND CORP Chief People & Workplace Officer Stuart A. Tross reported a routine tax-related share disposition. On the vesting of restricted stock units originally granted on May 10, 2022, 8,073 shares of common stock were withheld to cover tax withholding obligations at a value of $3.52 per share. After this non-market transaction, Tross directly holds 992,224 shares of MANNKIND CORP common stock.

Insider Trade Summary

Exercise Price or Tax Liability: 8,073 shares

Exercise Price or Tax Liability 1 txn

Insider Tross Stuart A

Role Chief People & Workpl Officer

Type	Security	Shares	Price	Value
Exercise Price or Tax Liability	Common Stock, $0.01 Par Value	8,073	$3.52	$28K

Holdings After Transaction: Common Stock, $0.01 Par Value — 992,224 shares (Direct)

Footnotes (1)

1. F1. Represents shares withheld to pay tax withholding obligations due on the date of vesting of the Restricted Stock Units originally granted on May 10, 2022.

Key Figures

Shares withheld for taxes: 8,073 shares Withholding value per share: $3.52 per share Shares held after transaction: 992,224 shares +1 more

4 metrics

Shares withheld for taxes 8,073 shares Tax-withholding disposition on RSU vesting

Withholding value per share $3.52 per share Value used for 8,073 withheld shares

Shares held after transaction 992,224 shares Direct ownership following tax withholding

Original RSU grant date May 10, 2022 Restricted Stock Units that vested and triggered withholding

Key Terms

Restricted Stock Units, tax withholding obligations, Common Stock, $0.01 Par Value, tax-withholding disposition

4 terms

Restricted Stock Units financial

"vesting of the Restricted Stock Units originally granted on May 10, 2022"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

tax withholding obligations financial

"shares withheld to pay tax withholding obligations due on the date of vesting"

Common Stock, $0.01 Par Value financial

"security_title": "Common Stock, $0.01 Par Value""

tax-withholding disposition financial

"transaction_action": "tax-withholding disposition""

A tax-withholding disposition is an event or transaction—such as selling or transferring securities, exercising options, or receiving compensation—that triggers a requirement to hold back part of the payment and remit it to tax authorities. It matters to investors because it reduces the cash they receive immediately and can change the timing and amount of taxable income, like a cashier taking a portion of your sale proceeds to pay taxes before you get the rest.

FAQ

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

What insider transaction did MNKD executive Stuart A. Tross report?

Stuart A. Tross reported a tax-withholding disposition of 8,073 MANNKIND CORP shares. These shares were withheld automatically to satisfy tax obligations triggered by vesting restricted stock units granted on May 10, 2022, rather than sold in the open market.

Was the MNKD Form 4 transaction an open-market sale of shares?

No, the Form 4 shows a tax-withholding disposition, not an open-market sale. Shares were withheld by MANNKIND CORP to cover tax liabilities upon RSU vesting, as noted in the footnote, and were not voluntarily sold on the stock market by the executive.

How many MANNKIND CORP shares were withheld for taxes in this Form 4?

The filing reports that 8,073 shares of MANNKIND CORP common stock were withheld. This withholding covered tax obligations arising on the vesting date of restricted stock units originally granted on May 10, 2022, reflecting standard equity compensation tax treatment.

What is Stuart A. Tross’s MNKD shareholding after the reported transaction?

After the tax-withholding event, Stuart A. Tross directly holds 992,224 shares of MANNKIND CORP common stock. This figure, disclosed in the Form 4, shows his remaining equity stake following the automatic withholding of 8,073 shares for tax obligations.

What do the restricted stock units in the MNKD Form 4 relate to?

The restricted stock units relate to an equity award granted on May 10, 2022. On vesting, a portion of the resulting shares was withheld to pay tax withholding obligations, a common practice for equity-based executive compensation at public companies.

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

Form 4 Insider Transactions: What Each Field Means →

See more from StockTitan in Google Search and AI answers. Adds StockTitan as a preferred source · opens Google

Add on Google Not now

Accepted by SEC EDGAR 05/13/2026 - 08:30 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^*

Tross Stuart A

(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)
	Chief People & Workpl Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/11/2026

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	05/11/2026		F		8,073(1)	D	$3.52	992,224	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. Represents shares withheld to pay tax withholding obligations due on the date of vesting of the Restricted Stock Units originally granted on May 10, 2022.

	/s/ Stuart A. Tross	05/13/2026
	** 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)