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 *
Williamson Steven
   2. Issuer Name and Ticker or Trading Symbol
ADVANCED PHOTONIX INC [API] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
Chief Technology Officer
(Last)
(First)
(Middle)
2925 BOARDWALK		 3. Date of Earliest Transaction (Month/Day/Year)
05/08/2015
(Street)

ANN ARBOR, MI 48104		 4. If Amendment, Date Original Filed(Month/Day/Year)
05/08/2015		 6. Individual or Joint/Group Filing(Check Applicable Line)
_X_ Form filed by One Reporting Person
___ 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
Class A Common Stock 05/08/2015   D   64,000 D (1) 0 D  
Class A Common Stock 05/08/2015   D   1,883,200 D (1) 0 I As Trustee of the Steven L. Williamson Trust

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
Employee Stock Option (Right to Buy) $ 1.5 05/08/2015   D     12,500 12/10/2008 06/10/2018 Common Stock 12,500 (2) 0 D  
Employee Stock Option (Right to Buy) $ 1.5 05/08/2015   D     12,500 06/10/2009 06/10/2018 Common Stock 12,500 (3) 0 D  
Employee Stock Option (Right to Buy) $ 1.5 05/08/2015   D     12,500 06/10/2010 06/10/2018 Common Stock 12,500 (4) 0 D  
Employee Stock Option (Right to Buy) $ 1.5 05/08/2015   D     12,500 06/10/2011 06/10/2018 Common Stock 12,500 (5) 0 D  
Employee Stock Option (Right to Buy) $ 1.51 05/08/2015   D     47,368 12/27/2011 06/27/2021 Common Stock 47,368 (6) 0 D  
Employee Stock Option (Right to Buy) $ 0.63 05/08/2015   D     8,333 12/12/2012 06/12/2022 Common Stock 8,333 (7) 0 D  
Employee Stock Option (Right to Buy) $ 0.63 05/08/2015   D     8,333 06/12/2013 06/12/2022 Common Stock 8,333 (8) 0 D  
Employee Stock Option (Right to Buy) $ 0.63 05/08/2015   D     8,334 06/12/2014 06/12/2022 Common Stock 8,334 (9) 0 D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
Williamson Steven
2925 BOARDWALK
ANN ARBOR, MI 48104		       Chief Technology Officer  

Signatures

 /s/ Steven Williamson   05/08/2015
**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) Each share of Class A Common Stock was disposed of pursuant to the Agreement of Merger and Plan of Reorganization, dated as of January 30, 2015 (the "Merger Agreement"), by and among the Issuer, Luna Innovations Incorporated ("Luna") and API Merger Sub, Inc. in exchange for 0.31782 shares of Luna common stock having a market value of $1.33 per share on the effective date of the merger. Footnote 1 on this Form 4/A includes the closing price of Luna common stock which was inadvertently omitted from the Form 4, as originally filed on May 8, 2015.
(2) The options were assumed by Luna pursuant to the Merger Agreement and replaced with an option to purchase a number of whole Luna common stock equal to the product of (i) the number of shares of Issuer common stock subject to such Issuer option multiplied by (ii) 0.31782 and rounding the resulting number down to the nearest whole number of shares of Luna common stock, at an exercise price per share equal to the quotient obtained by dividing (x) the exercise price per share of the Issuer option by (y) 0.31782 and rounding the resulting exercise price up to the nearest whole cent.
(3) The options were assumed by Luna pursuant to the Merger Agreement and replaced with an option to purchase a number of whole Luna common stock equal to the product of (i) the number of shares of Issuer common stock subject to such Issuer option multiplied by (ii) 0.31782 and rounding the resulting number down to the nearest whole number of shares of Luna common stock, at an exercise price per share equal to the quotient obtained by dividing (x) the exercise price per share of the Issuer option by (y) 0.31782 and rounding the resulting exercise price up to the nearest whole cent.
(4) The options were assumed by Luna pursuant to the Merger Agreement and replaced with an option to purchase a number of whole Luna common stock equal to the product of (i) the number of shares of Issuer common stock subject to such Issuer option multiplied by (ii) 0.31782 and rounding the resulting number down to the nearest whole number of shares of Luna common stock, at an exercise price per share equal to the quotient obtained by dividing (x) the exercise price per share of the Issuer option by (y) 0.31782 and rounding the resulting exercise price up to the nearest whole cent.
(5) The options were assumed by Luna pursuant to the Merger Agreement and replaced with an option to purchase a number of whole Luna common stock equal to the product of (i) the number of shares of Issuer common stock subject to such Issuer option multiplied by (ii) 0.31782 and rounding the resulting number down to the nearest whole number of shares of Luna common stock, at an exercise price per share equal to the quotient obtained by dividing (x) the exercise price per share of the Issuer option by (y) 0.31782 and rounding the resulting exercise price up to the nearest whole cent.
(6) The options were assumed by Luna pursuant to the Merger Agreement and replaced with an option to purchase a number of whole Luna common stock equal to the product of (i) the number of shares of Issuer common stock subject to such Issuer option multiplied by (ii) 0.31782 and rounding the resulting number down to the nearest whole number of shares of Luna common stock, at an exercise price per share equal to the quotient obtained by dividing (x) the exercise price per share of the Issuer option by (y) 0.31782 and rounding the resulting exercise price up to the nearest whole cent.
(7) The options were assumed by Luna pursuant to the Merger Agreement and replaced with an option to purchase a number of whole Luna common stock equal to the product of (i) the number of shares of Issuer common stock subject to such Issuer option multiplied by (ii) 0.31782 and rounding the resulting number down to the nearest whole number of shares of Luna common stock, at an exercise price per share equal to the quotient obtained by dividing (x) the exercise price per share of the Issuer option by (y) 0.31782 and rounding the resulting exercise price up to the nearest whole cent.
(8) The options were assumed by Luna pursuant to the Merger Agreement and replaced with an option to purchase a number of whole Luna common stock equal to the product of (i) the number of shares of Issuer common stock subject to such Issuer option multiplied by (ii) 0.31782 and rounding the resulting number down to the nearest whole number of shares of Luna common stock, at an exercise price per share equal to the quotient obtained by dividing (x) the exercise price per share of the Issuer option by (y) 0.31782 and rounding the resulting exercise price up to the nearest whole cent.
(9) The options were assumed by Luna pursuant to the Merger Agreement and replaced with an option to purchase a number of whole Luna common stock equal to the product of (i) the number of shares of Issuer common stock subject to such Issuer option multiplied by (ii) 0.31782 and rounding the resulting number down to the nearest whole number of shares of Luna common stock, at an exercise price per share equal to the quotient obtained by dividing (x) the exercise price per share of the Issuer option by (y) 0.31782 and rounding the resulting exercise price up to the nearest whole cent.

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