Director at iRhythm (IRTC) receives 1,573 RSU equity award, now holds 11,141 shares

Rhea-AI Filing Summary

iRhythm Holdings, Inc. director Karen Ling received an equity award in the form of restricted stock units. She acquired 1,573 shares of common stock at a grant price of $0.00 per share, increasing her direct holdings to 11,141 shares after the transaction.

The award consists of RSUs, each representing a contingent right to receive one share of iRhythm common stock. The RSUs vest on the earlier of one year after the grant date or the date of the company’s next annual meeting, tying the award to continued service on the board.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Ling Karen

Role null

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

Holdings After Transaction: Common Stock — 11,141 shares (Direct, null)

Footnotes (1)

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Key Figures

RSUs granted: 1,573 shares Grant price: $0.00 per share Shares owned after grant: 11,141 shares

3 metrics

RSUs granted 1,573 shares Common Stock RSU award to director Karen Ling

Grant price $0.00 per share Equity award compensation, not open-market purchase

Shares owned after grant 11,141 shares Total direct iRhythm common stock holdings after transaction

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.

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^*

Ling Karen

(Last) (First) (Middle)

C/O IRHYTHM HOLDINGS, INC.

699 8TH ST #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	11,141	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:

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	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)

FAQ

What insider transaction did iRhythm Holdings (IRTC) report for Karen Ling?

iRhythm reported that director Karen Ling received an equity award of 1,573 restricted stock units of common stock. These RSUs were granted at $0.00 per share and represent a compensation-related acquisition rather than an open-market purchase or sale.

How many iRhythm (IRTC) shares does Karen Ling hold after this Form 4?

After the RSU grant, Karen Ling holds 11,141 shares of iRhythm common stock directly. This total includes the 1,573 RSUs reported in the transaction, reflecting her updated direct ownership position following the award.

What are the vesting terms of Karen Ling’s RSU award at iRhythm (IRTC)?

The 1,573 RSUs granted to Karen Ling vest on the earlier of one year after the grant date or the date of iRhythm’s next annual meeting. Each vested RSU entitles her to receive one share of iRhythm common stock.

Is Karen Ling’s iRhythm (IRTC) Form 4 transaction an open-market buy or sell?

The filing shows a grant or award acquisition, not an open-market trade. Karen Ling received 1,573 RSUs as compensation, coded as an “A” transaction, meaning it is an equity award rather than a discretionary purchase or sale.

What type of security was granted to Karen Ling in the iRhythm (IRTC) filing?

Karen Ling received restricted stock units (RSUs), each representing a contingent right to receive one share of iRhythm common stock. The RSUs vest based on time and the company’s next annual meeting, aligning the award with her ongoing board service.