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iRhythm (NASDAQ: IRTC) CEO sells 13,813 shares to cover RSU taxes

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

Rhea-AI Filing Summary

iRhythm Holdings, Inc. President and CEO Quentin S. Blackford reported selling a total of 13,813 shares of common stock on March 2, 2026 at prices around $128.44 per share. According to the filing, these shares were sold to cover tax withholding obligations tied to vesting restricted stock units. After these transactions, he directly owned 204,155 shares of iRhythm common stock.

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Insider Blackford Quentin S.
Role President and CEO
Sold 13,813 shs ($1.77M)
Type Security Shares Price Value
Sale Common Stock 4,347 $128.4409 $558K
Sale Common Stock 4,043 $128.4415 $519K
Sale Common Stock 5,423 $128.4441 $697K
Holdings After Transaction: Common Stock — 213,621 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*
Blackford Quentin S.
(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)
X Director 10% Owner
X Officer (give title below) Other (specify below)
President and CEO
3. Date of Earliest Transaction (Month/Day/Year)
03/02/2026
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 03/02/2026 03/02/2026 S 4,347(1) D $128.4409 213,621 D
Common Stock 03/02/2026 03/02/2026 S 4,043(1) D $128.4415 209,578 D
Common Stock 03/02/2026 03/02/2026 S 5,423(1) D $128.4441 204,155 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 shares were sold to cover tax withholding and remittance obligations in connection with the vesting of Restricted Stock Units (RSUs).
Remarks:
/s/ Marc Rosenbaum, attorney-in-fact 03/03/2026
** 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.

Source: View Original Filing on SEC EDGAR

FAQ

What did iRhythm (IRTC) CEO Quentin Blackford report in this Form 4?

iRhythm President and CEO Quentin S. Blackford reported selling 13,813 shares of common stock. The shares were sold on March 2, 2026 to satisfy tax withholding obligations related to vesting restricted stock units rather than as a discretionary open-market sale.

How many iRhythm (IRTC) shares did the CEO sell and at what price?

Quentin S. Blackford sold 13,813 iRhythm common shares in three transactions. The reported sale prices were approximately $128.4409, $128.4415, and $128.4441 per share, all executed on March 2, 2026 to cover tax withholding on restricted stock unit vesting.

Why were iRhythm (IRTC) CEO Quentin Blackford’s shares sold in this filing?

The filing states the shares were sold to cover tax withholding and remittance obligations connected to vesting restricted stock units. This indicates the transactions were driven by tax requirements associated with equity compensation, not initiated as discretionary open-market sales for portfolio reasons.

How many iRhythm (IRTC) shares does the CEO hold after these transactions?

Following the reported sales, Quentin S. Blackford directly owned 204,155 shares of iRhythm common stock. This post-transaction balance reflects the remaining shares after 13,813 shares were sold on March 2, 2026 to satisfy tax withholding for restricted stock unit vesting.

Were the iRhythm (IRTC) CEO’s share sales open-market transactions?

The transactions are coded as open-market sales, but a footnote explains they were executed to cover tax withholding tied to restricted stock unit vesting. This means the sales were primarily administrative for tax remittance rather than discretionary investment-driven selling activity.