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iRhythm (IRTC) CRO Sumi Shrishrimal nets shares after RSU vesting and tax sale

Filing Impact
(Very High)
Filing Sentiment
(Negative)
Form Type
4

Rhea-AI Filing Summary

iRhythm Holdings, Inc. executive Sumi Shrishrimal, EVP and Chief Risk Officer, reported two common stock transactions. On August 7, 2026, she acquired 9,706 shares at no cost upon the Compensation & Human Capital Management Committee’s determination that performance conditions for previously granted performance RSUs were met. On August 10, 2026, 5,372 shares were sold at $124.6539 per share to cover tax withholding and remittance obligations related to that vesting.

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Insider Shrishrimal Sumi
Role EVP, Chief Risk Officer
Sold 5,372 shs ($670K)
Type Security Shares Price Value
Sale Common Stock F2 5,372 $124.6539 $670K
Grant/Award Common Stock F1 9,706 $0.00 $0.00
Holdings After Transaction: Common Stock — 44,621 shares (Direct)
Footnotes (2)
  1. F1. Represents the acquisition of shares upon the determination of the Compensation & Human Capital Management Committee of the Board of Directors of the Issuer that the performance conditions were met with respect to performance Restricted Stock Units ("RSUs") granted to the Reporting Person on August 7, 2023.
  2. F2. These shares were sold to cover tax withholding and remittance obligations in connection with the vesting of performance RSUs.
Shares acquired from RSU vesting 9,706 shares Performance RSUs vested on August 7, 2026
Shares sold for tax obligations 5,372 shares Sale on August 10, 2026 to cover tax withholding and remittance
Sale price per share $124.6539 per share Price for 5,372 common shares sold on August 10, 2026
performance Restricted Stock Units financial
"performance Restricted Stock Units ("RSUs") granted to the Reporting Person"
Performance restricted stock units (PRSUs) are promises to deliver company shares to employees or executives only if the business meets specific performance targets and any time-based holding rules. Think of them as a bonus that converts into stock only after set goals are reached, so investors watch PRSUs for two reasons: they can dilute existing shares if paid out, and they signal how closely management’s pay is tied to company performance.
tax withholding and remittance obligations financial
"shares were sold to cover tax withholding and remittance obligations"
Compensation & Human Capital Management Committee financial
"determination of the Compensation & Human Capital Management Committee"

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

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FAQ

What insider transactions did iRhythm (IRTC) EVP Sumi Shrishrimal report?
Sumi Shrishrimal reported two common stock transactions: a 9,706-share acquisition from vested performance RSUs on August 7, 2026, and a 5,372-share sale on August 10, 2026 to satisfy related tax withholding obligations.

How many iRhythm (IRTC) shares did Sumi Shrishrimal acquire from performance RSUs?
She acquired 9,706 shares of iRhythm common stock. The shares were issued after the Compensation & Human Capital Management Committee determined that performance conditions for performance RSUs granted on August 7, 2023 had been met.

What was the purpose of Sumi Shrishrimal’s iRhythm (IRTC) stock sale?
The 5,372-share sale was made to cover tax withholding and remittance obligations arising from the vesting of performance RSUs. The Form 4 specifies that the sale was tied to these tax-related obligations rather than a discretionary portfolio trade.

At what price were iRhythm (IRTC) shares sold by Sumi Shrishrimal?
The reported sale of 5,372 shares of iRhythm common stock was executed at an average price of $124.6539 per share. This transaction occurred on August 10, 2026, in connection with tax withholding for vested performance RSUs.

Was Sumi Shrishrimal’s iRhythm (IRTC) share acquisition a market purchase?
No, the 9,706-share acquisition was not a market purchase. It represents shares received upon vesting of performance RSUs after the Compensation & Human Capital Management Committee determined that related performance conditions had been satisfied.
SEC Form 4
FORM 4UNITED 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*
Shrishrimal Sumi
(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)
Director10% Owner
XOfficer (give title below)Other (specify below)
EVP, Chief Risk Officer
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
08/07/2026		6. Individual or Joint/Group Filing (Check Applicable Line)
XForm 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)
CodeVAmount(A) or (D)Price
Common Stock08/07/202608/07/2026A9,706(1)A$049,993D
Common Stock08/10/202608/10/2026S5,372(2)D$124.653944,621D
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)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Explanation of Responses:
1. Represents the acquisition of shares upon the determination of the Compensation & Human Capital Management Committee of the Board of Directors of the Issuer that the performance conditions were met with respect to performance Restricted Stock Units ("RSUs") granted to the Reporting Person on August 7, 2023.
2. These shares were sold to cover tax withholding and remittance obligations in connection with the vesting of performance RSUs.
Remarks:
/s/ Marc Rosenbaum, attorney-in-fact08/11/2026
** Signature of Reporting PersonDate
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)

Source: View Original Filing on SEC EDGAR