[8-K] INSMED Inc Reports Material Event

Rhea-AI Filing Summary

Insmed Incorporated announced it has furnished a press release detailing its financial results for the third quarter ended September 30, 2025. The company also provided a slide presentation to accompany its conference call.

Both materials are included as Exhibits 99.1 and 99.2. The information is furnished under Item 2.02 and Item 9.01 and is not deemed “filed” for purposes of Section 18 of the Exchange Act.

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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of

The Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): October 30, 2025

INSMED INCORPORATED

(Exact name of registrant as specified in its charter)

Virginia	000-30739	54-1972729
(State or other jurisdiction of incorporation)	(Commission File Number)	(IRS Employer Identification No.)

700 US Highway 202/206 Bridgewater, New Jersey		08807
(Address of principal executive offices)		(Zip Code)

Registrant’s telephone number, including area code: (908) 977-9900

Not Applicable

(Former name or former address, if changed since last report.)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

☐
Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

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Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐
Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

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Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each class	Trading Symbol(s)	Name of each exchange on which registered
Common Stock, par value $0.01 per share	INSM	Nasdaq Global Select Market

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (17 CFR 230.405) or Rule 12b-2 of the Securities Exchange Act of 1934 (17 CFR 240.12b-2).

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

ITEM 2.02 — Results of Operations and Financial Condition.

On October 30, 2025, Insmed Incorporated (the “Company”) issued a press release regarding its financial results for the third quarter ended September 30, 2025. A copy of this press release is furnished herewith as Exhibit 99.1 pursuant to this Item 2.02 and is incorporated herein by reference. The slide presentation to be used during the conference call referenced in the press release is furnished herewith as Exhibit 99.2.

The information contained herein, including Exhibits 99.1 and 99.2 attached hereto, shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such a filing.

ITEM 9.01 – Financial Statements and Exhibits.

(d) Exhibits

Exhibit No.		Description
99.1		Press release issued by Insmed Incorporated on October 30, 2025.
99.2		Insmed Incorporated October 30, 2025 Presentation.
104		Cover Page Interactive Date File (embedded within the Inline XBRL document).

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Dated: October 30, 2025	INSMED INCORPORATED
	By:	/s/ Michael A. Smith
	Name:	Michael A. Smith
	Title:	Chief Legal Officer and Corporate Secretary

FAQ

What did Insmed (INSM) announce in this 8-K?

Insmed furnished a press release on its financial results for the third quarter ended September 30, 2025, and a related presentation.

Which exhibits were included by Insmed (INSM)?

Exhibit 99.1 is the press release dated October 30, 2025, and Exhibit 99.2 is the October 30, 2025 presentation.

What period does the Insmed (INSM) update cover?

It covers the third quarter ended September 30, 2025.

Is the information considered 'filed' under the Exchange Act?

No. The information, including Exhibits 99.1 and 99.2, is furnished and not deemed “filed” under Section 18 of the Exchange Act.

What is Insmed’s trading symbol and exchange?

Insmed’s common stock trades under the symbol INSM on the Nasdaq Global Select Market.

Where can investors find the detailed results for Insmed (INSM)?

The detailed results are contained in the furnished press release (Exhibit 99.1) and the accompanying presentation (Exhibit 99.2).