Inspire Medical Systems (INSP) holder to sell 64 shares in 2026

Rhea-AI Filing Summary

Inspire Medical Systems, Inc. (symbol INSP) has a shareholder, John Rondoni, who has filed a notice of proposed sale under Rule 144. The filing covers the planned sale of 64 shares of common stock, with an aggregate market value of $3,991.04, to be sold through Morgan Stanley Smith Barney LLC on or about August 24, 2026 on the NYSE. The shares were acquired under an employee stock purchase plan, and the filing states that the securities to be sold were acquired under the plan on December 31, 2023 and December 31, 2024. The filing also notes that 28,910,375 shares of Inspire Medical Systems common stock are outstanding; this is a baseline figure, not the amount being sold.

Key Figures

Shares to be sold: 64 shares Aggregate market value of shares to be sold: $3,991.04 Shares outstanding: 28,910,375 shares +2 more

5 metrics

Shares to be sold 64 shares Number of INSP common shares covered by the Rule 144 notice

Aggregate market value of shares to be sold $3,991.04 Market value of 64 INSP common shares in the planned sale

Shares outstanding 28,910,375 shares INSP common shares outstanding referenced in the notice

Approximate date of sale 08/24/2026 Planned date for sale of 64 INSP shares under Rule 144

Acquisition date of shares 12/31/2023 Date shown in the table for acquisition of 64 INSP shares under ESPP

Key Terms

Rule 144, employee stock purchase plan, aggregate market value

3 terms

Rule 144 regulatory

"See the definition of "person" in paragraph (a) 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.

employee stock purchase plan financial

"The securities to be sold were acquired under the employee stock purchase plan"

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.

aggregate market value financial

"64 | 3991.04 | 28910375 | 08/24/2026"

Aggregate market value is the combined price you would pay to buy all outstanding shares of a company or all companies in a group at current market prices — essentially the sum of each stock’s market capitalization. It matters to investors because it shows the overall size and weight of an investment or sector (like the total cost to buy every piece of a puzzle), helps compare scale across companies or markets, and influences index composition and risk exposure.

FAQ

What does the Form 144 filing for INSP disclose about planned share sales?

The filing states that shareholder John Rondoni intends to sell 64 shares of Inspire Medical Systems, Inc. common stock under Rule 144, with an aggregate market value of $3,991.04, through Morgan Stanley Smith Barney LLC on or about August 24, 2026 on the NYSE.

How many INSP shares does the Form 144 indicate are outstanding?

The notice reports that 28,910,375 shares of Inspire Medical Systems, Inc. common stock are outstanding. This figure provides context for the company’s capital structure and is separate from the 64 shares covered by the planned Rule 144 sale.

How were the INSP shares in this Form 144 acquired?

The 64 shares of Inspire Medical Systems, Inc. common stock covered by the notice were acquired under an employee stock purchase plan. The remarks state that the securities to be sold were acquired under the plan on December 31, 2023 and December 31, 2024.

Who is the broker for the planned INSP Rule 144 sale?

The planned sale of 64 INSP common shares is to be executed through Morgan Stanley Smith Barney LLC – Executive Financial Services, located at 1 New York Plaza, New York. The exchange listed for the sale is the NYSE.

What is the approximate timing for the INSP share sale under this Form 144?

The Form 144 indicates an approximate date of sale of August 24, 2026 for the 64 INSP common shares to be sold under Rule 144 through Morgan Stanley Smith Barney LLC on the NYSE.

What payment details are associated with the acquisition of the INSP shares?

The table states that the 64 INSP shares being sold were acquired on December 31, 2023 under an employee stock purchase plan, with the nature of payment described as Cash.

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

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Available on EDGAR 08/24/2026 - 04:29 PM Accepted by SEC EDGAR 08/24/2026 - 04:29 PM Learn about SEC filing dates

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	0001932219
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	INSPIRE MEDICAL SYSTEMS INC.
SEC File Number	001-38468
Address of Issuer	5500 Wayzata Blvd., Suite 1600 Golden Valley MINNESOTA 55416
Phone	8446724357
Name of Person for Whose Account the Securities are To Be Sold	JOHN RONDONI
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	Officer

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	64	3991.04	28910375	08/24/2026	NYSE

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	12/31/2023	Employee Stock Purchase Plan	Issuer			64	12/31/2023	Cash

* 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

Nothing to Report

144: Remarks and Signature

Remarks	The securities to be sold were acquired under the employee stock purchase plan on 12/31/2023 and 12/31/2024.
Date of Notice	08/24/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	05/22/2026
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/ John Rondoni
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)