Insmed director sells 5,000 shares at $127.53

INSMED Inc (INSM) director Melvin Sharoky, MD reported an indirect sale of 5,000 shares of common stock on 2026-08-17 through Padonia, LLC at a weighted average price of $127.53 per share, within a range of $127.51–$127.61.

Rhea-AI Filing Summary

INSMED Inc (INSM) director Melvin Sharoky, MD reported an indirect sale of 5,000 shares of common stock on 2026-08-17 through Padonia, LLC at a weighted average price of $127.53 per share, within a range of $127.51–$127.61. After this transaction Padonia, LLC held zero shares. Dr. Sharoky continues to hold 246,081 shares directly, and additional shares are held indirectly through his spouse and several UTMA/FL custodial accounts for family members, for which he serves as custodian.

Insider Trade Summary

Net Seller: 5,000 shares

Net Sell 7 txns

Insider SHAROKY MELVIN MD

Role Director

Sold 5,000 shs ($638K)

Type	Security	Shares	Price	Value
Sale	Common Stock F1, F2	5,000	$127.53	$638K
holding	Common Stock	--	--	--
holding	Common Stock	--	--	--
holding	Common Stock F3	--	--	--
holding	Common Stock F4	--	--	--
holding	Common Stock F5	--	--	--
holding	Common Stock F6	--	--	--

Holdings After Transaction: Common Stock — 0 shares (Indirect, By Padonia, LLC); Common Stock — 246,081 shares (Direct); Common Stock — 6,847 shares (Indirect, By spouse); Common Stock — 819 shares (Indirect, By Melvin Sharoky C/F Adler J. Wink UTMA/FL); Common Stock — 5,423 shares (Indirect, By Melvin Sharoky C/F Nolan M. Wink UTMA/FL); Common Stock — 5,007 shares (Indirect, By Melvin Sharoky C/F Sophie C. Wink UTMA/FL); Common Stock — 3,724 shares (Indirect, By Melvin Sharoky C/F Tulia L. Sharoky UTMA/FL)

Footnotes (6)

1. F1. This is the weighted average sales price representing 5,000 shares sold at prices ranging from $127.51 to $127.61 per share. The Reporting Person undertakes to provide to the SEC staff, the issuer, or a security holder of the issuer the number of shares sold at each price within the price range upon request.
2. F2. The Reporting Person is the managing member of Padonia, LLC.
3. F3. The Reporting Person is the custodian of Melvin Sharoky C/F Adler J. Wink UTMA/FL.
4. F4. The Reporting Person is the custodian of Melvin Sharoky C/F Nolan M. Wink UTMA/FL.
5. F5. The Reporting Person is the custodian of Melvin Sharoky C/F Sophie C. Wink UTMA/FL.
6. F6. The Reporting Person is the custodian of Melvin Sharoky C/F Tulia L. Sharoky UTMA/FL.

Key Figures

Shares sold: 5,000 shares Weighted average sale price: $127.53 per share Direct holdings after transaction: 246,081 shares +5 more

8 metrics

Shares sold 5,000 shares Indirect sale of INSM common stock by Padonia, LLC on 2026-08-17

Weighted average sale price $127.53 per share Weighted average price for 5,000 shares sold, within $127.51–$127.61 range

Direct holdings after transaction 246,081 shares Common stock directly held by Melvin Sharoky, MD following reported transactions

Spouse indirect holdings 6,847 shares INSM shares indirectly owned through spouse after transactions

UTMA/FL custodial account 1 819 shares INSM shares held in UTMA/FL account for Adler J. Wink with Dr. Sharoky as custodian

UTMA/FL custodial account 2 5,423 shares INSM shares held in UTMA/FL account for Nolan M. Wink with Dr. Sharoky as custodian

UTMA/FL custodial account 3 5,007 shares INSM shares held in UTMA/FL account for Sophie C. Wink with Dr. Sharoky as custodian

UTMA/FL custodial account 4 3,724 shares INSM shares held in UTMA/FL account for Tulia L. Sharoky with Dr. Sharoky as custodian

Key Terms

weighted average sales price, indirect ownership, UTMA/FL, Rule 10b5-1

4 terms

weighted average sales price financial

"This is the weighted average sales price representing 5,000 shares sold"

indirect ownership financial

"total_shares_following_transaction 0.0000, direct_or_indirect I, nature_of_ownership"

UTMA/FL financial

"Melvin Sharoky C/F Adler J. Wink UTMA/FL"

Rule 10b5-1 regulatory

"aff_10b5_one is the filing's document-level Rule 10b5-1 checkbox"

Rule 10b5-1 is a regulation that allows company insiders to buy or sell their shares at predetermined times, even if they have access to non-public information. It acts like setting a schedule in advance for transactions, helping prevent accusations of unfair trading. This rule provides a way for insiders to plan trades transparently, giving investors confidence that these transactions are not based on hidden information.

FAQ

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

What insider transaction did INSM (INSMED Inc) disclose for Melvin Sharoky, MD?

INSM disclosed that director Melvin Sharoky, MD sold 5,000 shares of common stock on 2026-08-17 through Padonia, LLC. The sale was reported as an indirect transaction, with Padonia’s post-transaction balance in INSMED shares reported as zero.

At what price were the 5,000 INSM shares sold by Padonia, LLC?

The 5,000 INSM shares were sold at a weighted average price of $127.53 per share. According to the filing, trades occurred within a price range of $127.51 to $127.61, and detailed price-by-share information is available upon request.

How many INSM shares does Melvin Sharoky, MD hold directly after this Form 4?

After the reported sale, Melvin Sharoky, MD directly holds 246,081 shares of INSM common stock. This direct holding is separate from various indirectly held shares, including those owned by his spouse and several UTMA/FL custodial accounts for which he acts as custodian.

What indirect INSM shareholdings are associated with Melvin Sharoky, MD after the sale?

Post-transaction, indirect INSM holdings include 6,847 shares by his spouse and UTMA/FL custodial accounts holding 819, 5,423, 5,007, and 3,724 shares, respectively. Dr. Sharoky is identified as custodian for these UTMA/FL accounts in the filing footnotes.

Was the INSM insider sale by Padonia, LLC under a Rule 10b5-1 trading plan?

The filing indicates the Rule 10b5-1 checkbox was not marked as an affirmative plan election. No footnote describes the sale as made pursuant to a Rule 10b5-1 trading plan, so the transaction is not characterized there as pre-arranged under such a plan.

Who executed the 5,000-share sale related to INSM, and what is Padonia, LLC?

The 5,000-share sale was executed by Padonia, LLC, an entity for which Melvin Sharoky, MD is the managing member. The shares are reported as held indirectly, with the filing attributing this transaction to Padonia, LLC rather than Dr. Sharoky personally.

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

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Available on EDGAR 08/19/2026 - 04:11 PM Accepted by SEC EDGAR 08/19/2026 - 04:10 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^*

SHAROKY MELVIN MD

(Last) (First) (Middle)

700 US HIGHWAY 202/206

(Street)

BRIDGEWATER NEW JERSEY 08807

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
INSMED Inc [ INSM ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
08/17/2026

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	08/17/2026		S		5,000	D	$127.53(1)	0	I	By Padonia, LLC(2)
Common Stock								246,081	D
Common Stock								6,847	I	By spouse
Common Stock								819	I	By Melvin Sharoky C/F Adler J. Wink UTMA/FL(3)
Common Stock								5,423	I	By Melvin Sharoky C/F Nolan M. Wink UTMA/FL(4)
Common Stock								5,007	I	By Melvin Sharoky C/F Sophie C. Wink UTMA/FL(5)
Common Stock								3,724	I	By Melvin Sharoky C/F Tulia L. Sharoky UTMA/FL(6)

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. This is the weighted average sales price representing 5,000 shares sold at prices ranging from $127.51 to $127.61 per share. The Reporting Person undertakes to provide to the SEC staff, the issuer, or a security holder of the issuer the number of shares sold at each price within the price range upon request.

2. The Reporting Person is the managing member of Padonia, LLC.

3. The Reporting Person is the custodian of Melvin Sharoky C/F Adler J. Wink UTMA/FL.

4. The Reporting Person is the custodian of Melvin Sharoky C/F Nolan M. Wink UTMA/FL.

5. The Reporting Person is the custodian of Melvin Sharoky C/F Sophie C. Wink UTMA/FL.

6. The Reporting Person is the custodian of Melvin Sharoky C/F Tulia L. Sharoky UTMA/FL.

Remarks:

	/s/ Melvin Sharoky, M.D, by Michael A. Smith as Attorney-in-fact	08/19/2026
	** 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)