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
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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
1. Name and Address of Reporting Person*
PLAGA BARRY J

(Last) (First) (Middle)
C/O GUIDANCE SOFTWARE, INC.
215 N. MARENGO AVE. SUITE 250

(Street)
PASADENA CA 91101

(City) (State) (Zip)
2. Issuer Name and Ticker or Trading Symbol
Guidance Software, Inc. [ GUID ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director 10% Owner
X Officer (give title below) Other (specify below)
Chief Financial Officer
3. Date of Earliest Transaction (Month/Day/Year)
05/15/2012
4. If Amendment, Date of Original Filed (Month/Day/Year)
6. Individual or Joint/Group Filing (Check Applicable Line)
X Form filed by One Reporting Person
Form filed by More than One Reporting Person
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 (1) 05/15/2012 M 2,500 A $2.85 152,485 D
Common Stock (1) 05/15/2012 S 2,500 D $8.3905 (2) (3) 149,985 D
Common Stock (1) 05/15/2012 S 5,000 D $8.3905 (2) (3) 144,985 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
Employee Stock Option right to Buy $2.85 05/15/2012 M 2,500 10/01/2009 10/31/2018 Common Stock 2,500 $0 40,000 D
Explanation of Responses:
1. Pursuant to a Section 10b51 Plan established by Mr. Plaga on June 14, 2011, 5,000 shares of Common Stock and vested stock options representing a total of 2,500 shares of Common Stock were exercised and sold, at an average price of $8.390595 per share.
2. The price reported in Column 4 of Table I above, is a weighted average price. These shares were sold in multiple transactions at prices ranging from $8.29 to $8.699 per share, inclusive.
3. The reporting person undertakes to provide Guidance Software, Inc., any security holder of Guidance Software, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges indicated in the footnotes to this Form 4.
/s/ Mark E. Harrington Attorney in Fact 05/17/2012
** 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).
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