Ownership Submission
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 *
JOHNSTON RICHARD M
  2. Issuer Name and Ticker or Trading Symbol
AtriCure, Inc. [ATRC]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
__X__ Director _____ 10% Owner
_____ Officer (give title below) __X__ Other (specify below)
See Remarks
(Last)
(First)
(Middle)
C/O CAMDEN PARTNERS HOLDINGS, LLC, 500 E. PRATT STREET, SUITE 1200
3. Date of Earliest Transaction (Month/Day/Year)
06/11/2013
(Street)

BALTIMORE, MD 21202
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 06/11/2013   S   10,252 D $ 9.01 858,353 I See footnote (1)
Common Stock 06/11/2013   S   608 D $ 9.01 50,919 I See footnote (2)
Common Stock 06/12/2013   S   23,139 D $ 9.01 835,214 I See footnote (1)
Common Stock 06/12/2013   S   1,373 D $ 9.01 49,546 I See footnote (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
JOHNSTON RICHARD M
C/O CAMDEN PARTNERS HOLDINGS, LLC
500 E. PRATT STREET, SUITE 1200
BALTIMORE, MD 21202
  X     See Remarks
CAMDEN PARTNERS STRATEGIC II LLC
C/O CAMDEN PARTNERS HOLDINGS, LLC
500 EAST PRATT STREET SUITE 1200
BALTIMORE, MD 21202
      See Remarks
CAMDEN PARTNERS STRATEGIC FUND II A LP
C/O CAMDEN PARTNERS HOLDINGS, LLC
500 EAST PRATT STREET SUITE 1200
BALTIMORE, MD 21202
      See Remarks
CAMDEN PARTNERS STRATEGIC FUND II B LP
C/O CAMDEN PARTNERS HOLDINGS, LLC
500 EAST PRATT STREET SUITE 1200
BALTIMORE, MD 21202
      See Remarks
WARNOCK DAVID L
C/O CAMDEN PARTNERS HOLDINGS, LLC
500 EAST PRATT STREET SUITE 1200
BALTIMORE, MD 21202
      See Remarks
HUGHES DONALD W
C/O CAMDEN PARTNERS HOLDINGS, LLC
500 EAST PRATT STREET SUITE 1200
BALTIMORE, MD 21202
      See Remarks
BERKELEY RICHARD M
C/O CAMDEN PARTNERS HOLDINGS, LLC
500 E. PRATT STREET SUITE 1200
BALTIMORE, MD 21202
  X     See Remarks

Signatures

 /s/ Donald W. Hughes, Attorney-in-Fact for Richard M. Johnston   06/13/2013
**Signature of Reporting Person Date

 /s/ By Camden Partners Strategic II, LLC, By Donald W. Hughes, Managing Member   06/13/2013
**Signature of Reporting Person Date

 /s/ By Camden Partners Strategic Fund II-A, LP, By Camden Partners Strategic II, LLC, By Donald W. Hughes, Managing Member   06/13/2013
**Signature of Reporting Person Date

 /s/ By Camden Partners Strategic Fund II-B, LP, By Camden Partners Strategic II, LLC, By Donald W. Hughes, Managing Member   06/13/2013
**Signature of Reporting Person Date

 /s/ Donald W. Hughes, Attorney-in-Fact for David L. Warnock   06/13/2013
**Signature of Reporting Person Date

 /s/ Donald W. Hughes, Attorney-in-Fact for Richard M. Berkeley   06/13/2013
**Signature of Reporting Person Date

 /s/ Donald W. Hughes   06/13/2013
**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) These securities are owned directly by Fund II-A. CPS II, Fund II-B, Mr. Richard M. Johnston and the Managing Members may be deemed indirect beneficial owners of the securities held directly by Fund II-A as a result of their relationships described in the Remarks. CPS II, Fund II-B, Mr. Richard M. Johnston and each of the Managing Members disclaims beneficial ownership of the securities held directly by Fund II-A, except to the extent of its or his pecuniary interest therein.
(2) These securities are owned directly by Fund II-B. CPS II, Fund II-A, Mr. Richard M. Johnston and the Managing Members may be deemed indirect beneficial owners of the securities held directly by Fund II-B as a result of their relationships described in the Remarks. CPS II, Fund II-A, Mr. Richard M. Johnston and each of the Managing Members disclaims beneficial ownership of the securities held directly by Fund II-B, except to the extent of its or his pecuniary interest therein.
 
Remarks:
This Form 4 is being filed jointly by Mr. Richard M. Johnston, Camden Partners Strategic II, LLC ("CPS II"), Camden Strategic Fund II-A, LP ("Fund II-A") and Camden Strategic Fund II-B, LP ("Fund II-B") and Messrs. David L. Warnock, Donald W. Hughes and Richard M. Berkeley (collectively, the "Managing Members" and together with CPS II, Fund II-A and Fund II-B, the "Reporting Persons"). The Managing Members are the managing members of CPS II. CPS II is the general partner of Fund II-A and Fund II-B. Mr. Johnston is a director of the Issuer and formerly was a managing member of Camden Partners Holdings, LLC, which provides investment and management advisory services to Fund II-A and Fund II-B.

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