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[Form 4] iRhythm Technologies, Inc Insider Trading Activity

Filing Impact
(Very High)
Filing Sentiment
(Negative)
Form Type
4
Insider Blackford Quentin S.
Role President and CEO
Sold 30,000 shs ($4.82M)
Type Security Shares Price Value
Sale Common Stock 8,726 $158.8537 $1.39M
Sale Common Stock 9,775 $160.059 $1.56M
Sale Common Stock 4,905 $160.7259 $788K
Sale Common Stock 1,600 $161.9225 $259K
Sale Common Stock 1,514 $163.2959 $247K
Sale Common Stock 3,174 $163.9259 $520K
Sale Common Stock 306 $165.00 $50K
Holdings After Transaction: Common Stock — 179,038 shares (Direct)
Footnotes (7)
  1. F1. All sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan established by the reporting person on May 5, 2025.
  2. F2. Represents the weighted-average sale price per share of a series of transactions, all of which were executed on August 5, 2025. The actual sale prices ranged from a low of $158.47 to a high of $159.42, inclusive. The reporting person undertakes to provide upon request of the SEC staff, iRhythm Technologies, Inc. or any security holder of iRhythm Technologies, Inc., full information regarding the numbers of shares sold at each price within the range. The amount reflected has been rounded to 4 decimal points.
  3. F3. Represents the weighted-average sale price per share of a series of transactions, all of which were executed on August 5, 2025. The actual sale prices ranged from a low of $159.53 to a high of $160.44, inclusive. The reporting person undertakes to provide upon request of the SEC staff, iRhythm Technologies, Inc. or any security holder of iRhythm Technologies, Inc., full information regarding the numbers of shares sold at each price within the range. The amount reflected has been rounded to 4 decimal points.
  4. F4. Represents the weighted-average sale price per share of a series of transactions, all of which were executed on August 5, 2025. The actual sale prices ranged from a low of $160.49 to a high of $161.45, inclusive. The reporting person undertakes to provide upon request of the SEC staff, iRhythm Technologies, Inc. or any security holder of iRhythm Technologies, Inc., full information regarding the numbers of shares sold at each price within the range. The amount reflected has been rounded to 4 decimal points.
  5. F5. Represents the weighted-average sale price per share of a series of transactions, all of which were executed on August 5, 2025. The actual sale prices ranged from a low of $161.63 to a high of $162.41, inclusive. The reporting person undertakes to provide upon request of the SEC staff, iRhythm Technologies, Inc. or any security holder of iRhythm Technologies, Inc., full information regarding the numbers of shares sold at each price within the range. The amount reflected has been rounded to 4 decimal points.
  6. F6. Represents the weighted-average sale price per share of a series of transactions, all of which were executed on August 5, 2025. The actual sale prices ranged from a low of $162.71 to a high of $163.44, inclusive. The reporting person undertakes to provide upon request of the SEC staff, iRhythm Technologies, Inc. or any security holder of iRhythm Technologies, Inc., full information regarding the numbers of shares sold at each price within the range. The amount reflected has been rounded to 4 decimal points.
  7. F7. Represents the weighted-average sale price per share of a series of transactions, all of which were executed on August 5, 2025. The actual sale prices ranged from a low of $163.50 to a high of $164.23, inclusive. The reporting person undertakes to provide upon request of the SEC staff, iRhythm Technologies, Inc. or any security holder of iRhythm Technologies, Inc., full information regarding the numbers of shares sold at each price within the range. The amount reflected has been rounded to 4 decimal points.

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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).
X
 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 TECHNOLOGIES, INC.
699 8TH ST #600
(Street)
SAN FRANCISCO CA 94103
(City) (State) (Zip)
2. Issuer Name and Ticker or Trading Symbol
iRhythm Technologies, 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)
08/05/2025
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 08/05/2025 08/05/2025 S 8,726(1) D $158.8537(2) 200,312 D
Common Stock 08/05/2025 08/05/2025 S 9,775(1) D $160.059(3) 190,537 D
Common Stock 08/05/2025 08/05/2025 S 4,905(1) D $160.7259(4) 185,632 D
Common Stock 08/05/2025 08/05/2025 S 1,600(1) D $161.9225(5) 184,032 D
Common Stock 08/05/2025 08/05/2025 S 1,514(1) D $163.2959(6) 182,518 D
Common Stock 08/05/2025 08/05/2025 S 3,174(1) D $163.9259(7) 179,344 D
Common Stock 08/05/2025 08/05/2025 S 306(1) D $165 179,038 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. All sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan established by the reporting person on May 5, 2025.
2. Represents the weighted-average sale price per share of a series of transactions, all of which were executed on August 5, 2025. The actual sale prices ranged from a low of $158.47 to a high of $159.42, inclusive. The reporting person undertakes to provide upon request of the SEC staff, iRhythm Technologies, Inc. or any security holder of iRhythm Technologies, Inc., full information regarding the numbers of shares sold at each price within the range. The amount reflected has been rounded to 4 decimal points.
3. Represents the weighted-average sale price per share of a series of transactions, all of which were executed on August 5, 2025. The actual sale prices ranged from a low of $159.53 to a high of $160.44, inclusive. The reporting person undertakes to provide upon request of the SEC staff, iRhythm Technologies, Inc. or any security holder of iRhythm Technologies, Inc., full information regarding the numbers of shares sold at each price within the range. The amount reflected has been rounded to 4 decimal points.
4. Represents the weighted-average sale price per share of a series of transactions, all of which were executed on August 5, 2025. The actual sale prices ranged from a low of $160.49 to a high of $161.45, inclusive. The reporting person undertakes to provide upon request of the SEC staff, iRhythm Technologies, Inc. or any security holder of iRhythm Technologies, Inc., full information regarding the numbers of shares sold at each price within the range. The amount reflected has been rounded to 4 decimal points.
5. Represents the weighted-average sale price per share of a series of transactions, all of which were executed on August 5, 2025. The actual sale prices ranged from a low of $161.63 to a high of $162.41, inclusive. The reporting person undertakes to provide upon request of the SEC staff, iRhythm Technologies, Inc. or any security holder of iRhythm Technologies, Inc., full information regarding the numbers of shares sold at each price within the range. The amount reflected has been rounded to 4 decimal points.
6. Represents the weighted-average sale price per share of a series of transactions, all of which were executed on August 5, 2025. The actual sale prices ranged from a low of $162.71 to a high of $163.44, inclusive. The reporting person undertakes to provide upon request of the SEC staff, iRhythm Technologies, Inc. or any security holder of iRhythm Technologies, Inc., full information regarding the numbers of shares sold at each price within the range. The amount reflected has been rounded to 4 decimal points.
7. Represents the weighted-average sale price per share of a series of transactions, all of which were executed on August 5, 2025. The actual sale prices ranged from a low of $163.50 to a high of $164.23, inclusive. The reporting person undertakes to provide upon request of the SEC staff, iRhythm Technologies, Inc. or any security holder of iRhythm Technologies, Inc., full information regarding the numbers of shares sold at each price within the range. The amount reflected has been rounded to 4 decimal points.
Remarks:
/s/ Marc Rosenbaum, attorney-in-fact 08/06/2025
** 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