FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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(Print or Type Responses)

1. Name and Address of Reporting Person * PRESIDIO MANAGEMENT GROUP VIII L L C   2. Issuer Name and Ticker or Trading Symbol AtriCure, Inc. [ATRC] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director __X__ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) 2735 SAND HILL ROAD 3. Date of Earliest Transaction (Month/Day/Year) 06/13/2012 (Street) MENLO PARK, CA 94025 4. If Amendment, Date Original Filed(Month/Day/Year) 6. Individual or Joint/Group Filing(Check Applicable Line) ___ Form filed by One Reporting Person _X_ Form filed by More than One Reporting Person (City) (State) (Zip) 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 06/13/2012   J(1)   350,000 D (1) 1,502,444 I Directly Held by USVP VIII (2) Common Stock 06/13/2012   J(1)   2,579 D (1) 11,873 I Directly Held by AFF VIII (2)

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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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 Underlying Securities (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 of Derivative Security: 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

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
PRESIDIO MANAGEMENT GROUP VIII L L C 2735 SAND HILL ROAD MENLO PARK, CA 94025		X
US VENTURE PARTNERS VIII L P 2735 SAND HILL ROAD MENLO PARK, CA 94025		X
USVP VIII AFFILIATES FUND L P 2735 SAND HILL ROAD MENLO PARK, CA 94025		X
USVP ENTREPRENEUR PARTNERS VIII A L P 2735 SAND HILL ROAD MENLO PARK, CA 94025		X
USVP ENTREPRENEUR PARTNERS VIII B L P 2735 SAND HILL ROAD MENLO PARK, CA 94025		X
FEDERMAN IRWIN 2735 SAND HILL ROAD MENLO PARK, CA 94025		X
FU WINSTON S 2735 SAND HILL ROAD MENLO PARK, CA 94025		X
KRAUSZ STEVEN M 2735 SAND HILL ROAD MENLO PARK, CA 94025		X
LIDDLE DAVID E 2735 SAND HILL ROAD MENLO PARK, CA 94025		X
ROOT JONATHAN D 2735 SAND HILL ROAD MENLO PARK, CA 94025		X

Signatures

Michael P. Maher - Attorney in Fact for each reporting person		06/13/2012
**Signature of Reporting Person		Date

Explanation of Responses:

*	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).
(1)	Prorata distribution in kind from the partnership without consideration to its partners.
(2)	Presidio Management Group VIII, LLC ("PMG VIII") is the general partner of US Venture Partners VIII, L.P. ("USVP VIII"), USVP Entrepreneur Partners VIII-A, L.P. ("EP VIII-A"), USVP Entrepreneur Partners VIII-B, L.P. ("EP VIII-B"), and USVP VIII Affiliates Fund, L.P. ("AFF VIII"), and Irwin Federman, Winston S. Fu, Steven M. Krausz, David E. Liddle, Jonathan D. Root, Christopher Rust, Casey M. Tansey and Philip M. Young, the managing members of PMG VIII, may be deemed to share voting and dispositive power over the shares held by USVP VIII, EP VIII-A, EP VIII-B and AFF VIII. Such persons and entities disclaim beneficial ownership of shares held by USVP VIII, EP VIII-A, EP VIII-B and AFF VIII except to the extent of any pecuniary interest therein.
Remarks: Remark: This report is one (1) of two (2) reports each on a separate Form 4; however, these forms are related to the same transaction being filed by the reporting persons.

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.

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