MannKind director proposes sale of 39,051 shares

The notice also lists three earlier 10b5-1 sales, reporting gross proceeds of $127,835.85, $158,562.68 and $212,837.17.

Available on EDGAR 09/25/2026 - 04:35 PM EDT Accepted by SEC EDGAR 09/25/2026 - 04:17 PM EDT Learn about SEC filing dates

Rhea-AI Filing Summary

MannKind Corporation director Steven Binder filed a notice proposing to sell 39,051 common shares, with an aggregate market value of $128,477.79 and an approximate sale date of September 25, 2026. Morgan Stanley Smith Barney LLC is listed as the broker. The shares are listed as acquired from the issuer through performance stock units on July 15, 2026. The notice also lists three prior sales identified as 10b5-1 sales: 33,558 shares on September 10, 39,051 shares on August 7, and 52,485 shares on July 17, 2026.

Key Figures

Shares proposed for sale: 39,051 common shares Aggregate market value: $128,477.79 Prior shares sold and gross proceeds: 33,558 shares; $127,835.85 +2 more

5 metrics

Shares proposed for sale 39,051 common shares Approximate sale date September 25, 2026

Aggregate market value $128,477.79 Proposed sale of 39,051 common shares

Prior shares sold and gross proceeds 33,558 shares; $127,835.85 10b5-1 sale dated September 10, 2026

Prior shares sold and gross proceeds 39,051 shares; $158,562.68 10b5-1 sale dated August 7, 2026

Prior shares sold and gross proceeds 52,485 shares; $212,837.17 10b5-1 sale dated July 17, 2026

Key Terms

Rule 144, Performance Stock Units, 10b5-1 Sales

3 terms

Rule 144 regulatory

"sales are required by paragraph (e) of Rule 144"

Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.

Performance Stock Units financial

"Performance Stock Units"

Performance stock units are a type of company award that grants employees shares of stock only if certain performance goals are met. They motivate employees to work toward specific company achievements, aligning their interests with those of shareholders. For investors, they can influence a company's future stock supply and reflect management’s confidence in reaching key targets.

10b5-1 Sales regulatory

"10b5-1 Sales for STEVEN BINDER"

10b5-1 sales are pre-arranged stock-trading plans that let company insiders automatically buy or sell shares according to a fixed schedule or formula, even if they later learn confidential information. Think of it as setting up an automatic thermostat for trades: it creates a clear, documented path that can protect insiders from insider-trading accusations and gives investors a signal about predictable insider activity—though it can also simply be a way for insiders to diversify or raise cash.

FAQ

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

How many MNKD shares does Steven Binder propose to sell?

Steven Binder's notice proposes a sale of 39,051 MannKind common shares, with an aggregate market value of $128,477.79 and an approximate sale date of September 25, 2026. Morgan Stanley Smith Barney LLC is listed as the broker.

What gross proceeds were reported for Steven Binder's earlier MNKD sales?

Gross proceeds were $127,835.85 for 33,558 shares sold September 10, 2026; $158,562.68 for 39,051 shares sold August 7, 2026; and $212,837.17 for 52,485 shares sold July 17, 2026. Each entry is identified as a 10b5-1 sale.

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

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Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001712601
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	MannKind Corporation
SEC File Number	000-50865
Address of Issuer	1 Casper Street Danbury CONNECTICUT 06810
Phone	8186615000
Name of Person for Whose Account the Securities are To Be Sold	STEVEN BINDER
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Director

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004	39051	128477.79	321540637	09/25/2026	NASDAQ

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	07/15/2026	Performance Stock Units	Issuer			39051	07/15/2026	N/A

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
10b5-1 Sales for STEVEN BINDER 1 Casper Street Danbury CT 06810	Common	09/10/2026	33558	127835.85
10b5-1 Sales for STEVEN BINDER 1 Casper Street Danbury CT 06810	Common	08/07/2026	39051	158562.68
10b5-1 Sales for STEVEN BINDER 1 Casper Street Danbury CT 06810	Common	07/17/2026	52485	212837.17

144: Remarks and Signature

Remarks
Date of Notice	09/25/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	12/02/2025
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/ Steven Binder
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)