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
                                                                                  
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Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940
                      

1. Name and Address of Reporting Person *

Herron Danny C 		2. Issuer Name and Ticker or Trading Symbol

ADVANCED ENERGY INDUSTRIES INC [ AEIS ] 		5. Relationship of Reporting Person(s) to Issuer (Check all applicable)

_____ Director                      _____ 10% Owner
__ X __ Officer (give title below)      _____ Other (specify below)
Executive VP & CFO
(Last)          (First)          (Middle)

1625 SHARP POINT DRIVE 		3. Date of Earliest Transaction (MM/DD/YYYY)

2/1/2013
(Street)

FORT COLLINS, CO 80525
(City)        (State)        (Zip)
4. If Amendment, Date Original Filed (MM/DD/YYYY)

2/5/2013 
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. Trans. Date 2A. Deemed Execution Date, if any 3. Trans. 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   2/1/2013     A (1)    25836   A $0.00   39934   D    
Common Stock   2/1/2013     F    8355   (2) D $15.64   31579   (3) D    

Table II - Derivative Securities Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities)
1. Title of Derivate Security
(Instr. 3) 		2. Conversion or Exercise Price of Derivative Security 3. Trans. Date 3A. Deemed Execution Date, if any 4. Trans. 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 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 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
Performance Stock Options (right to buy)   $11.02   2/1/2013     A   (1)    22144       2/1/2013   2/1/2023   Common Stock   22144   $0.00   127144   D    
Performance Stock Options (right to buy)   $0.00   1/3/2012     A     V 0         (4)   (5) Common Stock   101812   $0.00   101812   (4) D    
Performance Units   $0.00   1/3/2012     A     V 0         (6)   (5) Common Stock   118784   $0.00   118784   (6) D    

Explanation of Responses:
( 1)  The reported transaction is the vesting of performance units reported on Form 4 filed January 6, 2012.
( 2)  Payment of tax liability by withholding securities incident to vesting of restricted stock units.
( 3)  Represents 31,134 shares of Restricted Stock units and 445 Employee Stock Purchase Plan shares. As of this reporting date, the restricted stock units have vested to 20,350 shares.
( 4)  This entry provides for the updated total outstanding performance stock options previously voluntarily reported on Form 4 filed January 6, 2012, following the vesting of 22,144 performance stock options (as reflected in the first line of the Table II). 28,762 performance options in respect of the 2012 performance period did not vest. The performance stock options reported in column 9 related to the 2012 and 2014 performance periods.
( 5)  If the performance metrics for the reporting year have not been met as determined by the Compensation Committee, the unvested options and units for the applicable year will expire immediately. If any of the options vest, they will cancel ten years from the grant date.
( 6)  This entry provides for the updated total outstanding performance units previously voluntarily reported on Form 4 filed January 6, 2012, following the vesting of 25,836 performance units (as reflected in Table 1 above) in respect of the 2012 performance period. 33556 performance units in respect of the 2012 performance period did not vest. The performance units reported in column 9 related to the 2013 and 2014 performance units.

Reporting Owners
Reporting Owner Name / Address
Relationships
Director 10% Owner Officer Other
Herron Danny C
1625 SHARP POINT DRIVE
FORT COLLINS, CO 80525

Executive VP & CFO

Signatures
/s/ Thomas O. McGimpsey - Attorney-in-Fact 2/11/2013
** 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 control number.
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