AtriCure director plans sale of 5,313 shares

Rhea-AI Filing Summary

AtriCure, Inc. (ATRC) director Regina E. Groves has filed a notice under Rule 144 to sell 5,313 shares of common stock of AtriCure through Fidelity Brokerage Services LLC, with an aggregate market value of $285,095.58 and an approximate sale date of September 10, 2026, on NASDAQ.

The shares are to be sold out of the Groves Family Trust and were acquired as stock awards for compensation on May 25, 2023 (3,564 shares) and May 20, 2022 (1,749 shares). AtriCure reported 50,866,294 shares of this class outstanding in the notice.

Key Figures

Shares to be sold: 5,313 shares Aggregate market value of shares to be sold: $285,095.58 Shares outstanding: 50,866,294 shares +4 more

7 metrics

Shares to be sold 5,313 shares Common stock of AtriCure, Inc. covered by the Rule 144 notice

Aggregate market value of shares to be sold $285,095.58 Value of 5,313 AtriCure common shares listed in the notice

Shares outstanding 50,866,294 shares AtriCure common shares outstanding for the class being sold

Approximate sale date September 10, 2026 Planned date for sale of AtriCure shares under Rule 144

Stock award on May 25, 2023 3,564 shares Compensation stock award from AtriCure, Inc.

Stock award on May 20, 2022 1,749 shares Compensation stock award from AtriCure, Inc.

Date of notice September 11, 2026 Date on which the Form 144 notice was signed

Key Terms

Rule 144, aggregate market value, stock award, attorney-in-fact, +1 more

5 terms

Rule 144 regulatory

"See the definition of "person" in paragraph (a) of Rule 144."

Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.

aggregate market value financial

"Common ... 5313 | 285095.58 | 50866294 | 09/10/2026 | NASDAQ"

Aggregate market value is the combined price you would pay to buy all outstanding shares of a company or all companies in a group at current market prices — essentially the sum of each stock’s market capitalization. It matters to investors because it shows the overall size and weight of an investment or sector (like the total cost to buy every piece of a puzzle), helps compare scale across companies or markets, and influences index composition and risk exposure.

stock award financial

"Common | 05/25/2023 | Stock Award | Issuer"

attorney-in-fact regulatory

"as attorney-in-fact for GROVES REGINA E"

An attorney-in-fact is the person or entity given legal authority through a power of attorney to act on behalf of another for specific tasks, such as signing documents, voting shares, or handling transactions. For investors, this matters because it lets a trusted representative make timely decisions or complete paperwork when the owner cannot, much like handing keys to someone to run errands on your behalf—so checks on scope and limits of that authority are important.

compensation financial

"3564 | 05/25/2023 | Compensation"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

Who is selling AtriCure (ATRC) shares in this Form 144 filing?

The notice reports that Regina E. Groves, a director of AtriCure, Inc., intends to sell shares of the company’s common stock. The shares will be sold from the Groves Family Trust, with Fidelity Brokerage Services LLC acting in the transaction.

How many AtriCure (ATRC) shares are covered by this Rule 144 notice?

The filing covers the proposed sale of 5,313 shares of AtriCure, Inc. common stock. The notice lists an aggregate market value of $285,095.58 for these shares and identifies NASDAQ as the securities exchange where the sales may occur.

What is the approximate sale date for the ATRC shares in this Form 144?

The notice states an approximate sale date of September 10, 2026 for the 5,313 shares of AtriCure, Inc. common stock to be sold under Rule 144. The Form 144 notice itself is dated September 11, 2026.

How and when were the AtriCure (ATRC) shares being sold acquired?

The shares to be sold were acquired as stock awards from AtriCure, Inc. for compensation: 3,564 shares on May 25, 2023 and 1,749 shares on May 20, 2022. The issuer is listed as AtriCure, Inc. for both awards.

How many AtriCure (ATRC) shares are outstanding according to this notice?

The Form 144 notice reports that there are 50,866,294 shares of AtriCure, Inc. common stock outstanding. This figure is provided in the securities information section as the number of shares or units outstanding for the class being sold.

From what account will the ATRC shares be sold?

The remarks section states that the shares are to be sold out of the Groves Family Trust. Fidelity Brokerage Services LLC is listed in the securities information section, and the notice is signed by a representative of Fidelity as attorney-in-fact for Regina E. Groves.

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

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Available on EDGAR 09/11/2026 - 11:00 AM Accepted by SEC EDGAR 09/11/2026 - 10:59 AM Learn about SEC filing dates

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	0001653877
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	AtriCure, Inc.
SEC File Number	000-51470
Address of Issuer	7555 INNOVATION WAY MASON OHIO 45040
Phone	513-755-4100
Name of Person for Whose Account the Securities are To Be Sold	GROVES REGINA E
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	Director

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	Fidelity Brokerage Services LLC 245 Summer Street Boston MA 02110	5313	285095.58	50866294	09/10/2026	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	05/25/2023	Stock Award	Issuer			3564	05/25/2023	Compensation
Common	05/20/2022	Stock Award	Issuer			1749	05/20/2022	Compensation

* 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

Nothing to Report

144: Remarks and Signature

Remarks	Shares to be sold out of Groves Family Trust
Date of Notice	09/11/2026
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	/s/ Ariadna Gonzalez as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for GROVES REGINA E
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)