iRhythm (IRTC) Form 144: Marc Rosenbaum to Sell 226 Shares on NASDAQ

Rhea-AI Filing Summary

Form 144 filed for iRhythm Technologies (IRTC) shows an insider intends to sell a small block of common stock through Morgan Stanley Smith Barney on NASDAQ. The notice specifies 226 shares with an aggregate market value of $35,918.18, acquired under the company Employee Stock Purchase Plan on 11/30/2023 and paid for in cash. The filer previously sold 696 shares on 06/02/2025 for $97,586.16. With 32,127,763 shares outstanding reported on the form, the planned sale represents approximately 0.0007% of the outstanding shares, indicating the transaction is immaterial to total equity. The filer certifies there is no undisclosed material adverse information and includes standard Rule 10b5-1 language if applicable.

Insights

Securities Analyst

TL;DR Insider plans to sell a very small stake—transaction size is immaterial relative to shares outstanding.

The Form 144 discloses a proposed sale of 226 common shares valued at $35,918.18 through Morgan Stanley Smith Barney on NASDAQ. The shares were acquired via the Employee Stock Purchase Plan on 11/30/2023. A prior sale of 696 shares on 06/02/2025 generated $97,586.16. Relative to the 32,127,763 shares outstanding shown on the form, the current notice represents about 0.0007% of outstanding shares, which is unlikely to alter market perception or company valuation. Disclosure appears routine and consistent with insider liquidity under an ESPP.

Corporate Governance Expert

TL;DR Filing reflects routine insider liquidity; no governance red flags evident from disclosed facts.

The notice includes required attestations that no undisclosed material adverse information exists and references possible Rule 10b5-1 instructions. The transaction size and prior recent sale suggest opportunistic, small-scale disposition of shares acquired through an ESPP rather than a vote of no confidence by management. All material items in the form are disclosed: acquisition method, payment type, broker, amounts, and past three-month sales, meeting regulatory transparency expectations.

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK
Filer CCC
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer

SEC File Number

Address of Issuer

Phone

Name of Person for Whose Account the Securities are To Be Sold

See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.

Relationship to Issuer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004	226	35918.18	32127763	08/11/2025	NASDAQ

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	11/30/2023	Employee Stock Purchase Plan	ISSUER			226	11/30/2023	Cash

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
MARC ROSENBAUM 699 8th Street Suite 600 San Francisco CA 94103	Common	06/02/2025	696	97586.16

144: Remarks and Signature

Remarks

Date of Notice

Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1

ATTENTION:

The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.

Signature

ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)

FAQ

What does the IRTC Form 144 disclose about the planned sale?

The form discloses a proposed sale of 226 common shares through Morgan Stanley Smith Barney on NASDAQ with an aggregate market value of $35,918.18.

Who is the seller listed on the IRTC Form 144?

The seller identified in the filing is Marc Rosenbaum, with prior reported sales included on the form.

When were the shares being sold originally acquired?

The 226 shares were acquired under the company's Employee Stock Purchase Plan on 11/30/2023 and paid for in cash.

Has the filer sold other IRTC shares recently?

Yes. The form reports a sale of 696 shares on 06/02/2025 that produced $97,586.16 in gross proceeds.

How material is the planned sale relative to IRTC's outstanding shares?

With 32,127,763 shares outstanding shown, the 226-share sale represents about 0.0007% of outstanding shares, which is immaterial to overall equity.