[Form 4] iRhythm Technologies, Inc Insider Trading Activity

Rhea-AI Filing Summary

Shrishrimal Sumi, EVP and Chief Risk Officer of iRhythm Technologies (IRTC), reported a sale of company stock. The Form 4 shows a single non-derivative disposition of 653 shares of common stock on 08/22/2025 at a price of $167.12 per share, leaving the reporting person with 34,032 shares beneficially owned.

The filing states the sale was executed pursuant to a Rule 10b5-1 trading plan established by the reporting person on May 23, 2025. The Form 4 was filed by one reporting person and signed by an attorney-in-fact.

Insights

Corporate Governance Expert

TL;DR: Officer sale disclosed under a documented 10b5-1 plan; filing shows compliance and routine insider activity.

The Form 4 records a controlled disposition of 653 shares by Shrishrimal Sumi, EVP and Chief Risk Officer, at $167.12 per share on 08/22/2025. The seller used a Rule 10b5-1 plan established on May 23, 2025, which is a common mechanism to mitigate concerns about trading on material non-public information. The filing includes the remaining beneficial ownership (34,032 shares) and is signed by an attorney-in-fact, indicating procedural completion of required disclosures. From a governance perspective, this is a standard, documented insider transaction rather than an unexplained block sale.

Securities/Insider Trading Analyst

TL;DR: Transaction is transparent and documented; no additional material details provided to suggest market-moving significance.

The report details a single non-derivative sale (code S) of 653 common shares on 08/22/2025 at $167.12, with 34,032 shares held after the sale. The explicit note that the sale was effected pursuant to a 10b5-1 trading plan (established 05/23/2025) clarifies the trading context. The filing does not disclose multiple transactions, derivative activity, or other changes in ownership that would indicate a material shift in insider position. Based solely on the disclosed facts, this appears to be routine insider selling under a pre-established plan.

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).

X

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^*

Shrishrimal Sumi

(Last) (First) (Middle)

C/O IRHYTHM TECHNOLOGIES, INC.

699 8TH ST #600

(Street)

SAN FRANCISCO CA 94103

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
iRhythm Technologies, Inc. [ IRTC ]

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

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	EVP, Chief Risk Officer

3. Date of Earliest Transaction (Month/Day/Year)
08/22/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

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	08/22/2025	08/22/2025	S		653(1)	D	$167.12	34,032	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. The sale reported on this Form 4 was effected pursuant to a Rule 10b5-1 trading plan established by the reporting person on May 23, 2025.

Remarks:

	/s/ Marc Rosenbaum, attorney-in-fact	08/22/2025
	** 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.