Insulet director Mazelsky acquires 141 stock units

The director's elected distribution may be made in a lump sum or substantially equal annual installments.

Rhea-AI Filing Summary

Insulet Corp director Jonathan Jay Mazelsky acquired 141 deferred common stock units on September 30, 2026, in lieu of cash compensation under the Deferred Compensation Plan for Non-Employee Directors. The transaction lists a price of $130.47 per share, and the reported post-transaction position was 1,496 shares. The units convert one-for-one into common stock upon distribution; at his election, distribution may be a lump sum or substantially equal annual installments.

Insider Trade Summary

Grant/Award: 141 shares

Grant/Award 1 txn

Insider MAZELSKY JONATHAN JAY

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Common Stock F1	141	$130.47	$18K

Holdings After Transaction: Common Stock — 1,496 shares (Direct)

Footnotes (1)

1. F1. These are deferred common stock units ("Deferred Units") received in lieu of cash compensation pursuant to the Company's Deferred Compensation Plan for Non-Employee Directors. The deferred common stock units will be converted into shares of Company common stock on a one-for-one basis upon distribution, with the value of any fractional shares paid in cash. Distribution of shares of common stock occurs, at the election of the director, either in a lump sum or in substantially equal annual installments pursuant to the Company's Deferred Compensation Plan for Non-Employee Directors.

Key Figures

Deferred common stock units: 141 units Transaction price per share: $130.47 per share Post-transaction position: 1,496 shares

3 metrics

Deferred common stock units 141 units Received September 30, 2026

Transaction price per share $130.47 per share Reported for the September 30, 2026 transaction

Post-transaction position 1,496 shares Reported following the September 30, 2026 transaction

Key Terms

Deferred Units, Deferred Compensation Plan for Non-Employee Directors, fractional shares

3 terms

Deferred Units financial

"deferred common stock units ("Deferred Units") received in lieu of cash compensation"

Deferred Compensation Plan for Non-Employee Directors financial

"pursuant to the Company's Deferred Compensation Plan for Non-Employee Directors"

fractional shares financial

"the value of any fractional shares paid in cash"

Fractional shares are portions of a whole share of a stock or fund, allowing investors to own less than one full unit. They make it possible to invest a specific dollar amount rather than buy whole shares, like buying a slice of a pizza instead of the entire pie. For investors this lowers the cost barrier, helps with diversification, and lets you reinvest dividends or purchase expensive stocks in small, precise amounts.

FAQ

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

How do Insulet's deferred common stock units convert to shares?

Insulet's deferred common stock units convert into common shares on a one-for-one basis upon distribution. Jonathan Jay Mazelsky may elect a lump sum or substantially equal annual installments, and the value of any fractional shares is paid in cash.

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

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Available on EDGAR 10/02/2026 - 04:23 PM Accepted by SEC EDGAR 10/02/2026 - 04:23 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^*

MAZELSKY JONATHAN JAY

(Last) (First) (Middle)

C/O INSULET CORPORATION

100 NAGOG PARK

(Street)

ACTON MASSACHUSETTS 01720

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
INSULET CORP [ PODD ]

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)
09/30/2026

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	09/30/2026		A		141(1)	A	$130.47	1,496	D

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. These are deferred common stock units ("Deferred Units") received in lieu of cash compensation pursuant to the Company's Deferred Compensation Plan for Non-Employee Directors. The deferred common stock units will be converted into shares of Company common stock on a one-for-one basis upon distribution, with the value of any fractional shares paid in cash. Distribution of shares of common stock occurs, at the election of the director, either in a lump sum or in substantially equal annual installments pursuant to the Company's Deferred Compensation Plan for Non-Employee Directors.

	/s/ Patricia K. Dolan, attorney-in-fact	10/02/2026
	** 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)