Equity award boosts iRhythm (IRTC) CTO holdings with 6,689 RSUs

Rhea-AI Filing Summary

Lawrence Brian Lee reported acquisition or exercise transactions in this Form 4 filing.

iRhythm Holdings Chief Technology Officer Lawrence Brian Lee reported receiving an equity award tied to the company’s common stock. He was granted 6,689 Restricted Stock Units (RSUs), each representing a contingent right to receive one share of common stock for no cash payment.

According to the award terms, 25% of the RSUs vest on March 1, 2027 and on each one-year anniversary thereafter, as long as he continues as a service provider through each vesting date. After this grant, Lee directly holds 21,168 shares of common stock, reflecting his increased equity-based stake in the company.

Insider Trade Summary

Net Buyer: 6,689 shares

Net Buy 1 txn

Insider Lawrence Brian Lee

Role Chief Technology Officer

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	6,689	$0.00	$0.00

Holdings After Transaction: Common Stock — 21,168 shares (Direct)

Footnotes (1)

1. F1. 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.

FAQ

What insider transaction did iRhythm (IRTC) report for Lawrence Brian Lee?

iRhythm reported that Chief Technology Officer Lawrence Brian Lee received a grant of 6,689 Restricted Stock Units. Each RSU is a contingent right to one share of common stock, increasing his total direct holdings to 21,168 shares after the award.

How many iRhythm (IRTC) RSUs were granted to the CTO and at what price?

The CTO received 6,689 Restricted Stock Units at a reported price of $0.00 per unit. RSUs are equity awards, not open-market purchases, and each unit can convert into one share of common stock upon vesting under the award’s terms.

What is the vesting schedule for the iRhythm (IRTC) RSUs granted to the CTO?

The RSUs vest over four years, starting March 1, 2027. Twenty-five percent vest on March 1, 2027, with an additional 25% vesting on each one-year anniversary, conditioned on continued service through each vesting date for the remaining units.

Did the iRhythm (IRTC) CTO buy shares on the open market in this Form 4?

No, the Form 4 shows an equity award, not an open-market purchase. The 6,689 units were reported under a grant or award code, with a transaction price of $0.00, reflecting compensation rather than a standard stock market transaction.

How many iRhythm (IRTC) shares does the CTO hold after this RSU grant?

After the reported RSU grant, the CTO directly holds 21,168 shares of iRhythm common stock. This figure reflects his total direct ownership as reported following the award, excluding any unvested RSUs that remain contingent on future vesting conditions.

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Form 4 Insider Transactions: What Each Field Means →

Accepted by SEC EDGAR 02/27/2026 - 04:29 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^*

Lawrence Brian Lee

(Last) (First) (Middle)

C/O IRHYTHM HOLDINGS, INC.

699 8TH ST #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 Technology 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		6,689(1)	A	$0	21,168	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:

On January 12, 2026, iRhythm Technologies, Inc. (iRhythm Tech) and iRhythm Holdings, Inc. (Issuer) effectuated a holding company reorganization pursuant to which the Issuer became the successor issuer to iRhythm Tech pursuant to Rule 12g-3(a) of the Securities Exchange Act of 1934, as amended. On such date, all outstanding shares and equity awards of iRhythm Tech automatically converted into securities of the Issuer on a one for one basis, with no change to the proportionate interests of security holders.

	/s/ Marc Rosenbaum, attorney-in-fact	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.
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