Transaction Details

Footnotes

All transactions reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan established by Mr. Talwalkar on May 12, 2025. | Represents the weighted-average sale price per share of a series of transactions, all of which were executed on November 10, 2025. The actual sale prices ranged from a low of $171.7350 to a high of $172.7000, inclusive. Mr. Talwalkar 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 weighted-average sale price reflected has been rounded to 4 decimal points. | Represents the weighted-average sale price per share of a series of transactions, all of which were executed on November 10, 2025. The actual sale prices ranged from a low of $172.7450 to a high of $172.9600, inclusive. Mr. Talwalkar 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 weighted-average sale price reflected has been rounded to 4 decimal points. | Represents the weighted-average sale price per share of a series of transactions, all of which were executed on November 10, 2025. The actual sale prices ranged from a low of $173.8700 to a high of $174.7000 inclusive. Mr. Talwalkar 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 weighted-average sale price reflected has been rounded to 4 decimal points. | Represents the weighted-average sale price per share of a series of transactions, all of which were executed on November 10, 2025. The actual sale prices ranged from a low of $174.7500 to a high of $175.2800, inclusive. Mr. Talwalkar 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 weighted-average sale price reflected has been rounded to 4 decimal points. | Represents the weighted-average sale price per share of a series of transactions, all of which were executed on November 10, 2025. The actual sale prices ranged from a low of $175.7650 to a high of $176.1150, inclusive. Mr. Talwalkar 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 weighted-average sale price reflected has been rounded to 4 decimal points. | The option, originally granted on May 23, 2016 for 21,248 shares, vested in thirty-six equal monthly installments. This option has an expiration date of May 23, 2026. The Rule 10b5-1 trading plan of Mr. Talwalkar solely covers shares subject to options expiring in 2026 and 2027.