iRhythm (NASDAQ: IRTC) CAO receives 2,508-share RSU grant

Rhea-AI Filing Summary

Rosenbaum Marc Wade reported acquisition or exercise transactions in this Form 4 filing.

iRhythm Holdings, Inc. reported that Chief Accounting Officer Marc Wade Rosenbaum received a grant of 2,508 Restricted Stock Units (RSUs) of common stock on February 25, 2026. Each RSU represents one share, with 25% vesting on March 1, 2027 and on each following one-year anniversary, subject to continued service. Following this award, his directly held common stock position is 17,522 shares.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Rosenbaum Marc Wade

Role Chief Accounting Officer

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	2,508	$0.00	--

Holdings After Transaction: Common Stock — 17,522 shares (Direct)

Footnotes (1)

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Form 4 Insider Transactions: What Each Field Means →

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^*

Rosenbaum Marc Wade

(Last) (First) (Middle)

C/O IRHYTHM HOLDINGS, INC.

699 8TH STREET, #600

(Street)

SAN FRANCISCO CA 94103

(City) (State) (Zip)

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

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

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

3. Date of Earliest Transaction (Month/Day/Year)
02/25/2026

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	02/25/2026	02/25/2026	A		2,508(1)	A	$0	17,522	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 securities are Restricted Stock Units ("RSUs"). Each RSU represents a contingent right to receive one share of the Issuer's Common Stock. 25% of the RSUs vest on March 1, 2027 and each one-year anniversary thereafter, subject to the Reporting Person continuing as a service provider through each such date.

Remarks:

	Marc Rosenbaum	02/27/2026
	** 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.

FAQ

What insider transaction did iRhythm (IRTC) report for Marc Wade Rosenbaum?

iRhythm reported that Chief Accounting Officer Marc Wade Rosenbaum received a grant of 2,508 Restricted Stock Units. Each RSU represents one share of common stock, awarded at no cash cost, increasing his directly held position to 17,522 shares after the transaction.

How many iRhythm (IRTC) shares are covered by Marc Rosenbaum’s RSU grant?

The award covers 2,508 Restricted Stock Units, each equal to one share of iRhythm common stock. These units are not immediately issued, but convert into shares over time as vesting conditions tied to continued service are satisfied.

What is the vesting schedule for Marc Rosenbaum’s iRhythm (IRTC) RSUs?

The RSUs vest over four years. Twenty-five percent vest on March 1, 2027, with an additional 25% vesting on each subsequent one-year anniversary, provided Marc Rosenbaum continues as a service provider through each vesting date as specified.

Did Marc Rosenbaum pay cash for the iRhythm (IRTC) RSU grant?

No cash price was reported for the RSU grant, which is typical for equity awards. The transaction price per share is shown as 0.0000, reflecting that these RSUs were granted as compensation rather than purchased in the open market.

How many iRhythm (IRTC) shares does Marc Rosenbaum hold after this RSU award?

After the RSU grant, Marc Rosenbaum is reported to beneficially own 17,522 shares of iRhythm common stock directly. This total reflects his holdings following the award and indicates his post-transaction ownership level as disclosed.