AtriCure COO acquires shares via ESPP

AtriCure, Inc. Chief Operating Officer Douglas J. Seith acquired 527 shares of common stock through the company’s 2018 Employee Stock Purchase Plan for the period ended June 30, 2026.

Rhea-AI Filing Summary

AtriCure, Inc. Chief Operating Officer Douglas J. Seith acquired 527 shares of common stock through the company’s 2018 Employee Stock Purchase Plan for the period ended June 30, 2026. The shares were purchased at $23.78 each, bringing his direct holdings to 229,867 shares.

Insider Trade Summary

Grant/Award: 527 shares

Grant/Award 1 txn

Insider Seith Douglas J

Role Chief Operating Officer

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	527	$23.78	$13K

Holdings After Transaction: Common Stock — 229,867 shares (Direct)

Footnotes (2)

1. F1. Shares acquired pursuant to the AtriCure, Inc. 2018 Employee Stock Purchase Plan for the period ended June 30, 2026.
2. F2. In accordance with the ESPP, these shares were purchased based on 85% of the closing price of the issuer's common stock on June 30, 2026, which is the last trading day of the applicable offering period. The closing price on June 30, 2026, was $27.98.

Key Figures

Shares acquired: 527 shares Purchase price per share: $23.78 per share Closing market price: $27.98 per share +2 more

5 metrics

Shares acquired 527 shares Common stock acquired via 2018 ESPP for period ended June 30, 2026

Purchase price per share $23.78 per share ESPP acquisition price reported in Form 4

Closing market price $27.98 per share Closing price on June 30, 2026 used for ESPP discount

Holdings after transaction 229,867 shares Direct AtriCure common stock held by COO after ESPP purchase

ESPP discount rate 85% of closing price Plan formula applied to June 30, 2026 closing price

Key Terms

Employee Stock Purchase Plan, ESPP, closing price, grant/award acquisition

4 terms

Employee Stock Purchase Plan financial

"Shares acquired pursuant to the AtriCure, Inc. 2018 Employee Stock Purchase Plan for the period ended June 30, 2026."

An employee stock purchase plan is a company program that lets workers buy shares through small payroll deductions, often at a discount to the market price and after a set offering period. Think of it like a workplace savings plan that turns into ownership: it encourages employees to share in the company’s success and can create predictable buying or selling of stock that investors watch because it affects supply, demand and employee incentives.

ESPP financial

"In accordance with the ESPP, these shares were purchased based on 85% of the closing price of the issuer's common stock on June 30, 2026."

An Employee Stock Purchase Plan (ESPP) is a company program that lets employees buy the company’s shares at a reduced price, usually by setting aside a small portion of their pay over time. It matters to investors because it encourages employees to own part of the business—like giving staff a discounted membership— which can boost commitment and performance, while also potentially increasing the number of shares available and affecting shareholder value.

closing price financial

"The closing price on June 30, 2026, was $27.98."

grant/award acquisition financial

"transaction_action": "grant/award acquisition""

FAQ

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

What did AtriCure (ATRC) COO Douglas Seith report on this Form 4?

Douglas J. Seith reported acquiring 527 shares of AtriCure common stock. The acquisition came through the 2018 Employee Stock Purchase Plan for the period ended June 30, 2026, and increased his direct holdings to 229,867 shares.

How many AtriCure (ATRC) shares did the COO acquire and at what price?

The COO acquired 527 shares of AtriCure common stock at $23.78 per share. This price reflects the plan’s 85% purchase feature relative to the $27.98 closing price on June 30, 2026, the last trading day of the offering period.

What plan was used for the AtriCure (ATRC) COO’s share acquisition?

The shares were acquired under the AtriCure, Inc. 2018 Employee Stock Purchase Plan. This plan allowed employees, including the COO, to buy company stock for the offering period ended June 30, 2026, at a discount to the market closing price.

What discount applied to the AtriCure (ATRC) COO’s ESPP purchase?

Under the employee stock purchase plan, the COO’s shares were purchased at 85% of the June 30, 2026 closing price. The closing price was $27.98, and the resulting purchase price for this acquisition was $23.78 per share, as reflected in the Form 4.

What are Douglas Seith’s AtriCure (ATRC) holdings after this Form 4?

Following this ESPP acquisition, Douglas J. Seith directly holds 229,867 AtriCure common shares. This figure reflects his position after adding the 527 shares purchased for the employee stock purchase plan period ended June 30, 2026.

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

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Accepted by SEC EDGAR 07/02/2026 - 09:00 AM EDT Learn about SEC filing dates

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^*

Seith Douglas J

(Last) (First) (Middle)

7555 INNOVATION WAY

(Street)

MASON OHIO 45040-9695

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
AtriCure, Inc. [ ATRC ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Operating Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/30/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

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	06/30/2026		A		527(1)	A	$23.78(2)	229,867	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. Shares acquired pursuant to the AtriCure, Inc. 2018 Employee Stock Purchase Plan for the period ended June 30, 2026.

2. In accordance with the ESPP, these shares were purchased based on 85% of the closing price of the issuer's common stock on June 30, 2026, which is the last trading day of the applicable offering period. The closing price on June 30, 2026, was $27.98.

Remarks:

	/s/ Allison Walker as Attorney-in-fact for Douglas J. Seith	07/02/2026
	** 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.
* Form 4: SEC 1474 (03-26)