FMR LLC reported beneficial ownership of 3,963,512.09 shares of Insulet Corp common stock (CUSIP 45784P101), representing 5.6% of the class as of 03/31/2026. The cover data shows sole voting power of 3,727,171.97 and sole dispositive power of 3,963,512.09. The filing names Abigail P. Johnson as having dispositive power for the same share total and references a Power of Attorney and Exhibit 99 for related subsidiary and agreement information.
Positive
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Negative
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Insights
FMR LLC holds a disclosed 5.6% stake in Insulet as of 03/31/2026.
FMR's Schedule 13G/A filing lists 3,963,512.09 shares beneficially owned, with sole voting power recorded at 3,727,171.97 and sole dispositive power at 3,963,512.09. Abigail P. Johnson is named with dispositive authority for the same share amount.
Ownership above the 5% threshold triggers public reporting; the filing attaches a Power of Attorney and refers to Exhibit 99 for a 13d-1(k)(1) agreement and subsidiary identification. Further details on any allocation among FMR entities are provided in the referenced exhibits.
Key Figures
Shares beneficially owned:3,963,512.09 sharesPercent of class:5.6%Sole voting power:3,727,171.97 shares+4 more
7 metrics
Shares beneficially owned3,963,512.09 sharesbeneficially owned as of 03/31/2026
Percent of class5.6%percentage of Insulet common stock as reported
Sole voting power3,727,171.97 sharessole voting power reported on cover page
Sole dispositive power3,963,512.09 sharessole dispositive power reported on cover page
CUSIP45784P101Insulet Corp common stock identifier
Power of Attorney effective date04/13/2026power of attorney referenced for signatures
Filing signature date05/05/2026signed on behalf of FMR LLC and Abigail P. Johnson
Key Terms
Schedule 13G/A, beneficially owned, sole dispositive power, 13d-1(k)(1) agreement
A Schedule 13G/A is an amended public filing with the U.S. securities regulator that updates a previous Schedule 13G, disclosing when an individual or group holds a substantial (typically over 5%) stake in a company and is claiming a passive, non‑controlling intent. Investors monitor these updates because rising or falling holdings can signal changing confidence, potential future moves, or shifts in voting power — like watching a public ledger where large shareholders quietly adjust their positions.
beneficially ownedregulatory
"Item 4(a) Amount beneficially owned: 3963512.09"
Beneficially owned describes securities or assets where a person has the economic rights and control—such as the right to receive dividends and to direct voting—even if legal title is held in another name. Think of it like having the keys and using a car that’s registered to someone else: you get the benefits and make decisions. Investors care because beneficial ownership reveals who truly controls value and voting power, affecting corporate decisions and takeover dynamics.
sole dispositive powerregulatory
"cover page shows Sole Dispositive Power 3,963,512.09"
Sole dispositive power is the exclusive legal authority to decide what happens to a security — for example, whether to sell, transfer, or retain shares — without needing anyone else’s permission. Investors care because it signals who truly controls the economic outcome of an investment: like holding the only key to a safe, the holder can realize gains or losses and may trigger regulatory reporting, insider rules, or influence over corporate ownership.
13d-1(k)(1) agreementregulatory
"Exhibit Information Please see Exhibit 99 for 13d-1(k) (1) agreement"
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 13G
UNDER THE SECURITIES EXCHANGE ACT OF 1934
(Amendment No. 12)
INSULET CORP
(Name of Issuer)
COMMON STOCK
(Title of Class of Securities)
45784P101
(CUSIP Number)
03/31/2026
(Date of Event Which Requires Filing of this Statement)
Check the appropriate box to designate the rule pursuant to which this Schedule is filed:
Rule 13d-1(b)
Rule 13d-1(c)
Rule 13d-1(d)
schemaVersion:
SCHEDULE 13G
CUSIP Number(s):
45784P101
1
Names of Reporting Persons
FMR LLC
2
Check the appropriate box if a member of a Group (see instructions)
(a)
(b)
3
Sec Use Only
4
Citizenship or Place of Organization
DELAWARE
Number of Shares Beneficially Owned by Each Reporting Person With:
5
Sole Voting Power
3,727,171.97
6
Shared Voting Power
0.00
7
Sole Dispositive Power
3,963,512.09
8
Shared Dispositive Power
0.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
3,963,512.09
10
Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)
11
Percent of class represented by amount in row (9)
5.6 %
12
Type of Reporting Person (See Instructions)
HC
SCHEDULE 13G
CUSIP Number(s):
45784P101
1
Names of Reporting Persons
Abigail P. Johnson
2
Check the appropriate box if a member of a Group (see instructions)
(a)
(b)
3
Sec Use Only
4
Citizenship or Place of Organization
UNITED STATES
Number of Shares Beneficially Owned by Each Reporting Person With:
5
Sole Voting Power
0.00
6
Shared Voting Power
0.00
7
Sole Dispositive Power
3,963,512.09
8
Shared Dispositive Power
0.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
3,963,512.09
10
Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)
11
Percent of class represented by amount in row (9)
5.6 %
12
Type of Reporting Person (See Instructions)
IN
SCHEDULE 13G
Item 1.
(a)
Name of issuer:
INSULET CORP
(b)
Address of issuer's principal executive offices:
100 NAGOG PARK,ACTON,MA,USA,01720
Item 2.
(a)
Name of person filing:
FMR LLC
(b)
Address or principal business office or, if none, residence:
245 Summer Street, Boston, Massachusetts 02210
(c)
Citizenship:
Not applicable
(d)
Title of class of securities:
COMMON STOCK
(e)
CUSIP No.:
45784P101
Item 3.
If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)
Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)
Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)
Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)
Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)
An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)
An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)
A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)
A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)
A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j)
A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J),
please specify the type of institution:
(k)
Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.
Ownership
(a)
Amount beneficially owned:
3963512.09
(b)
Percent of class:
5.6 %
(c)
Number of shares as to which the person has:
(i) Sole power to vote or to direct the vote:
Please see the responses to Items 5 and 6 on the cover page.
(ii) Shared power to vote or to direct the vote:
0.00
(iii) Sole power to dispose or to direct the disposition of:
3963512.09
(iv) Shared power to dispose or to direct the disposition of:
0.00
Item 5.
Ownership of 5 Percent or Less of a Class.
Not Applicable
Item 6.
Ownership of more than 5 Percent on Behalf of Another Person.
If any other person is known to have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, such securities, a statement to that effect should be included in response to this item and, if such interest relates to more than 5 percent of the class, such person should be identified. A listing of the shareholders of an investment company registered under the Investment Company Act of 1940 or the beneficiaries of employee benefit plan, pension fund or endowment fund is not required.
One or more other persons are known to have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, the COMMON STOCK of INSULET CORP. No one other person's interest in the COMMON STOCK of INSULET CORP is more than five percent of the total outstanding COMMON STOCK.
Item 7.
Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
If a parent holding company has filed this schedule, pursuant to Rule 13d-1(b)(ii)(G), so indicate under Item 3(g) and attach an exhibit stating the identity and the Item 3 classification of the relevant subsidiary. If a parent holding company has filed this schedule pursuant to Rule 13d-1(c) or Rule 13d-1(d), attach an exhibit stating the identification of the relevant subsidiary.
See attached Exhibit 99.
Item 8.
Identification and Classification of Members of the Group.
Not Applicable
Item 9.
Notice of Dissolution of Group.
Not Applicable
Item 10.
Certifications:
By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under ?? 240.14a-11.
SIGNATURE
After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.
FMR LLC
Signature:
Richard Bourgelas
Name/Title:
Duly authorized under Power of Attorney effective as of April 13, 2026, by and on behalf of FMR LLC and its direct and indirect subsidiaries*
Date:
05/05/2026
Abigail P. Johnson
Signature:
Richard Bourgelas
Name/Title:
Duly authorized under Power of Attorney effective as of April 13, 2026, by and on behalf of Abigail P. Johnson*
Date:
05/05/2026
Comments accompanying signature: *This power of attorney is incorporated herein by reference to Exhibit 24 to the Schedule 13G filed by FMR LLC on April 29,2026, accession number: 0000315066-26-000738.
FMR LLC reported beneficial ownership of 3,963,512.09 shares, equal to 5.6% of Insulet common stock as of 03/31/2026. The filing is a Schedule 13G/A disclosing that ownership level and voting/dispositive powers.
Who is listed with dispositive power over the shares in the filing?
The filing lists Abigail P. Johnson with sole dispositive power over 3,963,512.09 shares. The cover also shows FMR LLC with the same dispositive count and specified voting power figures.
What voting power does FMR LLC report for Insulet shares?
FMR LLC reports sole voting power of 3,727,171.97 shares and shared voting power of 0.00, as shown on the cover information accompanying the Schedule 13G/A.
Does the filing reference any agreements or exhibits?
Yes. The Schedule 13G/A references a Power of Attorney effective April 13, 2026, and directs readers to Exhibit 99 for a 13d-1(k)(1) agreement and subsidiary identification details.
What CUSIP and class are reported in the filing?
The filing identifies the security as Common Stock of Insulet Corp with CUSIP 45784P101, as stated on the cover and Item 2 of the Schedule 13G/A.
