[144] Insmed, Inc. SEC Filing

Rhea-AI Filing Summary

Form 144 Notice of Proposed Sale filed by John Drayton Wise, indicating planned sale of 20,000 shares of Insmed common stock through Merrill Lynch, with an aggregate market value of $2,099,400. The securities were acquired through Stock Plan Activity on June 23, 2025.

Recent trading activity by the same insider over the past 3 months includes:

• June 13, 2025: 4,486 shares sold for $439,681
• June 3, 2025: 1,860 shares sold for $132,990
• May 2025: Multiple sales totaling 22,133 shares for approximately $1.49 million

Total outstanding shares: 182,138,923. The proposed sale represents approximately 0.011% of outstanding shares. Transaction scheduled for execution on NASDAQ around June 23, 2025.

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

144: Issuer Information

Name of Issuer

SEC File Number

Address of Issuer

Phone

Name of Person for Whose Account the Securities are To Be Sold

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

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	Merrill Lynch 1800 K ST NW Suite 800 Washington DC 20006	20000	2099400.00	182138923	06/23/2025	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	06/23/2025	Stock Plan Activity	Issuer			20000	06/23/2025	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
John Drayton Wise 700 US Highway 202/206 Bridgewater NJ 08807	Common	06/13/2025	4486	439681.00
John Drayton Wise 700 US Highway 202/206 Bridgewater NJ 08807	Common	06/03/2025	1860	132990.00
John Drayton Wise 700 US Highway 202/206 Bridgewater NJ 08807	Common	05/29/2025	6691	445620.00
John Drayton Wise 700 US Highway 202/206 Bridgewater NJ 08807	Common	05/28/2025	3431	233308.00
John Drayton Wise 700 US Highway 202/206 Bridgewater NJ 08807	Common	05/20/2025	7000	471652.00
John Drayton Wise 700 US Highway 202/206 Bridgewater NJ 08807	Common	05/14/2025	401	26309.00
John Drayton Wise 700 US Highway 202/206 Bridgewater NJ 08807	Common	05/13/2025	4610	312603.00

144: Remarks and Signature

Remarks

Date of Notice

Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1

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

ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)

FAQ

How many INSM shares are being sold according to the Form 144 filing from June 28, 2025?

According to the Form 144 filing, 20,000 shares of INSM common stock are proposed to be sold through Merrill Lynch, with an aggregate market value of $2,099,400.00.

Who is selling INSM shares in this Form 144 filing and what is their recent trading history?

John Drayton Wise, based in Bridgewater NJ, is selling INSM shares. In the past 3 months, he has made multiple sales totaling 28,479 shares: 4,486 shares on 6/13/25, 1,860 shares on 6/3/25, 6,691 shares on 5/29/25, 3,431 shares on 5/28/25, 7,000 shares on 5/20/25, 401 shares on 5/14/25, and 4,610 shares on 5/13/25.

What is the total value of INSM shares sold by the insider in the past 3 months?

In the past 3 months, the insider (John Drayton Wise) has sold shares with total gross proceeds of $2,062,163.00, calculated from seven separate transactions ranging from May 13, 2025 to June 13, 2025.

How did the INSM insider acquire the 20,000 shares being sold?

The 20,000 INSM shares were acquired through Stock Plan Activity from the Issuer on June 23, 2025. The nature of payment is listed as 'n/a', suggesting these may be stock awards or options exercised under an employee compensation plan.

What is INSM's total shares outstanding according to the Form 144?

According to the Form 144 filing, INSM has 182,138,923 shares outstanding.