iRhythm director granted 1,573 RSUs

OBOYLE KEVIN C reported acquisition or exercise transactions in this Form 4 filing. iRhythm Holdings director Kevin C. O’Boyle received an equity grant of 1,573 restricted stock units.

Rhea-AI Filing Summary

OBOYLE KEVIN C reported acquisition or exercise transactions in this Form 4 filing.

iRhythm Holdings director Kevin C. O’Boyle received an equity grant of 1,573 restricted stock units. The RSUs were awarded at no cash cost and each unit represents a right to one share of iRhythm common stock. The award vests on the earlier of one year after grant or the company’s next annual meeting. Following this grant, O’Boyle directly holds 3,608 shares.

Insider Trade Summary

Grant/Award: 1,573 shares

Grant/Award 1 txn

Insider OBOYLE KEVIN C

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	1,573	$0.00	$0.00

Holdings After Transaction: Common Stock — 3,608 shares (Direct)

Footnotes (1)

1. F1. These securities are restricted stock units ("RSUs"). Each RSU represents a contingent right to receive one share of IRTC Common Stock. The vesting occurs on the earlier of (i) one year after grant or the (ii) the date of the company's next annual meeting.

Key Figures

RSUs granted: 1,573 units Grant price: $0.0000 per share Holdings after grant: 3,608 shares +1 more

4 metrics

RSUs granted 1,573 units Equity award to director Kevin C. O’Boyle

Grant price $0.0000 per share RSUs awarded at no cash cost

Holdings after grant 3,608 shares Total direct common stock holdings post-transaction

Vesting trigger Earlier of one year or next annual meeting RSU vesting condition from footnote

Key Terms

restricted stock units ("RSUs"), contingent right, annual meeting

3 terms

restricted stock units ("RSUs") financial

"These securities are restricted stock units ("RSUs"). Each RSU represents a contingent right..."

Restricted stock units (RSUs) are a company promise to give an employee shares of stock (or cash equivalent) in the future, but only after certain conditions—usually staying with the company for a set time or hitting performance goals—are met. Investors watch RSUs because when they vest they increase the number of shares outstanding and can lead insiders to sell shares, affecting share price, company dilution and the true cost of employee pay.

contingent right financial

"Each RSU represents a contingent right to receive one share of IRTC Common Stock."

annual meeting financial

"The vesting occurs on the earlier of (i) one year after grant or the (ii) the date of the company's next annual meeting."

A company's annual meeting is a yearly gathering where owners (shareholders) and the board review performance, ask questions, and vote on key matters like electing directors, approving auditor choices, and sometimes setting pay or dividend policies. For investors it matters because decisions made and votes cast can change who runs the company, influence strategy and payouts, and affect the value or direction of their investment—similar to a homeowners’ meeting where rules and leaders that shape your property’s value are decided.

FAQ

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

What insider transaction did iRhythm Holdings (IRTC) report for Kevin C. O’Boyle?

iRhythm reported that director Kevin C. O’Boyle received a grant of 1,573 restricted stock units. These units are part of his equity compensation and were awarded at no cash cost, increasing his direct holdings to 3,608 shares of common stock after the grant.

How many shares did Kevin C. O’Boyle acquire in the latest iRhythm (IRTC) Form 4 filing?

Kevin C. O’Boyle acquired 1,573 restricted stock units, each representing one share of iRhythm common stock. The acquisition was reported as a grant or award, not an open-market purchase, and reflects routine director compensation rather than a discretionary stock purchase.

When do Kevin C. O’Boyle’s new iRhythm (IRTC) RSUs vest?

The RSUs granted to Kevin C. O’Boyle vest on the earlier of one year after the grant date or the company’s next annual meeting. This time-based vesting schedule is typical for director compensation and ties the award to continued board service during that period.

What are restricted stock units (RSUs) in the context of iRhythm (IRTC) director compensation?

For iRhythm, restricted stock units are awards that give the holder a contingent right to receive common shares. Kevin C. O’Boyle’s 1,573 RSUs convert into shares only upon vesting, aligning his compensation with shareholder value while deferring actual share delivery until conditions are met.

Did Kevin C. O’Boyle buy iRhythm (IRTC) shares on the open market in this Form 4?

No, the Form 4 shows a grant of 1,573 restricted stock units, not an open-market purchase. The transaction code is “A” for grant or award, indicating equity compensation rather than a voluntary buy or sell decision in the public market for iRhythm shares.

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

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Accepted by SEC EDGAR 05/29/2026 - 04:02 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^*

OBOYLE KEVIN C

(Last) (First) (Middle)

C/O IRHYTHM HOLDINGS, INC.

699 8TH STREET, #600

(Street)

SAN FRANCISCO CALIFORNIA 94103

(City) (State) (Zip)

UNITED STATES

(Country)

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

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)
05/27/2026

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	05/27/2026		A		1,573(1)	A	$0	3,608	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 IRTC Common Stock. The vesting occurs on the earlier of (i) one year after grant or the (ii) the date of the company's next annual meeting.

Remarks:

(1) 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. (2) Exhibit 24 - Power of Attorney

	/s/ Marc Rosenbaum, attorney-in-fact	05/29/2026
	** 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)