UNITED STATES

Securities and Exchange Commission

Washington, D.C. 20549



Form 10-K/A

Amendment No. 1



[X] ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934



For the fiscal year ended December 31, 2009



OR



[  ] TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934



For the transition period from ____________ to ____________



Commission file number 1-13412

_____________________



Hudson Technologies, Inc.

_____________________





|New York                                                       | 13-3641539                          
|-------------------------------------------------------------- | ------------------------------------
|(State or Other Jurisdiction of Incorporation or Organization) | (I.R.S. Employer Identification No.)
|P.O. Box 1541                                                  |                                     
|One Blue Hill Plaza                                            |                                     
|Pearl River, New York                                          | 10965                               
|(Address of Principal Executive Offices)                       | (Zip Code)                          
|                                                               |                                     
|Registrant's  telephone number, including area code            | (845) 735-6000                      



Securities registered pursuant to Section 12(b) of the Act:



|Title of each class          |  | Name of each Exchange on which Registered          
|---------------------------- |  | ---------------------------------------------------
|Common stock, $.01 par value |  | The NASDAQ Stock Market LLC (NASDAQ Capital Market)

Securities registered pursuant to Section 12(g) of the Act: None

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act [

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or 15(d) of the Exchange Act [] Yes  [x ] No

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. [X] Yes []  No

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Website, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (SECTION 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files). [] Yes  []  No

Indicate by check mark if  disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is not contained herein, and will not be contained, to the best of registrant's knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form 10-K.  []

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See the definitions of "large accelerated filer", "accelerated filer", and "smaller reporting company" in Rule12b-2 of the Exchange Act.

Large accelerated filer	[]		Accelerated filer []Non-accelerated filer [] (Do not check if a smaller reporting company)		Smaller reporting company [x]

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Act).  [] Yes [X]  No

The aggregate market value of registrant's common stock held by non-affiliates at June 30, 2009 was approximately $15,667,044.  As of February 26, 2010 there were 20,941,706 shares of the registrant's common stock outstanding.

Documents incorporated by reference: None





EXPLANATORY NOTE



This Amendment No. 1 on Form 10-K/A (the "Amendment") amends the Annual Report on Form 10-K of Hudson Technologies, Inc.  for the fiscal year ended December 31, 2009, originally filed with the Securities and Exchange Commission ("SEC") on March 1, 2010 (the "Original Filing"). We are filing this Amendment to amend certain information contained in the beneficial ownership table located in Item 12 of Part III of the Original Filing.  In connection with the filing of this Amendment and pursuant to the rules of the SEC, we are including with this Amendment certain new certifications by our principal executive officer and principal financial officer as exhibits 31.1 and 31.2. Accordingly, Item 15 of Part IV has also been amended to reflect the filing of these new certifications.



Except as described above, no other changes have been made to the Original Filing. The Original Filing continues to speak as of the date of the Original Filing, and we have not updated the disclosures contained therein to reflect any events which occurred at a date subsequent to the filing of the Original Filing other than as expressly indicated in this Amendment.



PART III





Item 12.  Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters



The following table sets forth information as of February 26, 2010 based on information obtained from the persons named below, with respect to the beneficial ownership of Hudson's common stock by (i) each person known by Hudson to be the beneficial owner of more than 5% of Hudson's outstanding common stock, (ii) the Named Executives, (iii) each director of Hudson, and (iv) all of our directors and executive officers as a group:



BENEFICIAL OWNERSHIP TABLE





|Title of Class | Name of Beneficial Owner                                        | Amount and Nature ofBeneficial Ownership (1) | Percent of Class
|-------------- | --------------------------------------------------------------- | -------------------------------------------- | ----------------
|Common stock   | Kevin J. Zugibe                                                 | 5,636,705    (2)                             | 25.80%          
|Common stock   | Brian F. Coleman                                                | 947,176     (3)                              | 4.40%           
|Common stock   | Charles F. Harkins                                              | 351,452     (4)                              | 1.65%           
|Common Stock   | Stephen P. Mandracchia                                          | 2,400,695   (5)                              | 11.26%          
|Common stock   | Vincent P. Abbatecola                                           | 114,500     (6)                              | *               
|Common stock   | Dominic J. Monetta                                              | 160,100     (7)                              | *               
|Common stock   | Otto C. Morch                                                   | 92,509     (8)                               | *               
|Common stock   | Marathon Capital Management, LLC                                | 1,599,500     (9)                            | 7.6%            
|Common stock   | All directors and executive officers as a group (Eight Persons) | 10,281,907     (10)                          | 43.47%          



* = Less than 1%

_______

(1) A person is deemed to be the beneficial owner of securities that can be acquired by such person within 60 days from February 26, 2010.  Each beneficial owner's percentage ownership is determined by assuming that options and warrants that are held by such person (but not held by any other person) and which are exercisable within 60 days from February 26, 2010 have been exercised.  Unless otherwise noted, Hudson believes that all persons named in the table have sole voting and investment power with respect to all shares of our common stock beneficially owned by them. The address for each beneficial owner, unless otherwise noted, is c/o Hudson Technologies, Inc. at PO Box 1541, One Blue Hill Plaza, Pearl River, New York 10965.



(2) Includes (i) 87,500 shares which may be purchased at $1.13 per share; (ii) 193,750 shares which may be purchased at $1.15 per share; (iii) 37,500 shares which may be purchased at $.83 per share; (iv) 18,750 shares which may be purchased at $.95 per share; (v) 93,750 shares which may be purchased at $1.02 per share; (vi) 18,750 shares which may be purchased at $.87 per share; (vii) 18,750 shares which may be purchased at $2.15 per share; (viii) 123,750 shares which may be purchased at $1.76 per share; (ix) 35,000 shares which may be purchased at $1.40 per share; (x) 9,300 shares which may be purchased at $1.02 per share, (xi) 195,000 shares



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that may be purchased at $0.85 per share; and (xii) 78,000 shares which may be purchased at $1.26 per share, under immediately exercisable options.



(3) Includes  (i) 75,000 shares which may be purchased at $1.13 per share; (ii) 18,750 shares which may be purchased at $1.15 per share; (iii) 25,000 shares which may be purchased at $.83 per share; (iv) 12,500 shares which may be purchased at $.95 per share; (v) 62,500 shares which may be purchased at $1.02 per share; (vi) 12,500 shares which may be purchased at $.87 per share; (vii) 12,500 shares which may be purchased at $2.15 per share; (viii) 82,500 shares which may be purchased at $1.76 per share; (ix) 32,500 shares which may be purchased at $1.40 per share; (x) 8,100 shares which may be purchased at $1.02 per share, (xi) 180,000 shares which may be purchased at $0.85 per share;  (xii) and 75,000 shares which may be purchased at $1.26 per share, under immediately exercisable options.



(4) Includes (i) 13,114 shares which may be purchased at $1.13 per share; (ii) 14,063 shares which may be purchased at $1.15 per share; (iii) 9,375 shares which may be purchased at $2.15 per share; (iv) 61,875 shares which may be purchased at $1.76 per share; (v) 23,125 shares which may be purchased at $1.40 per share; (vi) 7,900 shares which may be purchased at $1.02, (vii) 150,000 which may be purchased at $0.85 per share; and (viii)72,000 shares which may be purchased at $1.26 per share, under immediately exercisable options.



(5)  Includes (i) 1,563,420 shares held of record in the name of Mr. Mandracchia's wife, Theresa Mandracchia, over which Mr. Mandracchia has sole voting power and shared dispositive power, and (ii) the following shares which may be purchased by Mr. Mandracchia upon the exercise of options previously granted to him:  (a) 40,000 shares which may be purchased at $1.13 per share; (b) 9,375 shares which may be purchased at $1.15 per share; (c) 12,500 shares which may be purchased at $.83 per share; (d) 6,250 shares which may be purchased at $.95 per share; (d) 31,250 shares which may be purchased at $1.02 per share; (f) 6,250 shares which may be purchased at $.87 per share; (g) 6,250 shares which may be purchased at $2.15 per share; (h) 51,250 shares which may be purchased at $1.76 per share; (i) 20,750 shares which may be purchased at $1.40 per share; (j) 7,400 shares which may be purchased at $1.02 per share, (k) 125,000 shares that may be purchased at $0.85 per share; and (l) 58,000 shares which may be purchased at $1.26 per share, under immediately exercisable options.



(6)  Includes (i) 40,000 shares which may be purchased at $0.85 per share, and (ii) 40,000 shares which may be purchased at $1.21 per share, under immediately exercisable options.



(7)  Includes 40,000 shares which may be purchased at $1.21 per share under immediately exercisable options.



(8) Includes (i) 10,000 shares, which may be purchased at $0.94 per share; (ii) 2,500 shares, which may be purchased at $1.12 per share; and (iii) 20,000 shares which may be purchased at $0.85 per share, and (iv) 40,000 shares which may be purchased at $1.21 per share, under immediately exercisable options.



(9) Represents aggregate amount of beneficially owned common stock as reported in Schedule 13G filed by Marathon Capital Management, LLC on January 19, 2010.  The address of Marathon Capital Management, LLC is 4 North Park Drive, Suite 106, Hunt Valley, MD  21030.



(10) Includes exercisable options to purchase 2,711,347 shares of common stock which may be purchased under immediately exercisable options.





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Equity Compensation Plan



The following table provides certain information with respect to all of Hudson's equity compensation plans as of December 31, 2009.





|                                                               | Number of securities to be issued upon exercise of outstanding options, warrants and rights | Weighted-average exercise price of outstanding options, warrants and rights | Number of securities remaining available for future issuance under equity compensation plans (excluding securities reflected in column (a))
|-------------------------------------------------------------- | ------------------------------------------------------------------------------------------- | --------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------
|Plan Category                                                  | (a)                                                                                         | (b)                                                                         | (c)                                                                                                                                        
|Equity compensation plans approved by security holders         | 3,394,343                                                                                   | $1.20                                                                       | 2,809,000                                                                                                                                  
|                                                               |                                                                                             |                                                                             |                                                                                                                                            
|Equity compensation plans not approved by security holders (1) | 173,500                                                                                     | $1.69                                                                       | - -                                                                                                                                        
|                                                               |                                                                                             |                                                                             |                                                                                                                                            
|Total                                                          | 3,567,843                                                                                   | $1.22                                                                       | 2,809,000                                                                                                                                  

__________________________

1. Includes (i) 100,000 five-year warrants, issued in 2008 to our lenders, in connection with an amendment to the Facility, exercisable at $1.88 per share and (ii) 73,500 five-year warrants, issued in 2009 to our placement agent in connection with the Offering exercisable, at $1.4375 per share.





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Part IV



Item 15.  Exhibits, Financial Statement and Schedules



|                         
|-------------------------
|(A)(1)                   
|                         
|(A)(2)                   
|                         
|(A)(3)                   
|3.1                      
|3.2                      
|3.3                      
|3.4                      
|3.5                      
|3.6                      
|3.7                      
|3.8                      
|3.9                      
|3.10                     
|3.11                     
|10.1                     
|10.2                     
|10.3                     
|10.4                     
|10.5                     
|10.6                     
|10.7                     
|10.8                     
|10.9                     
|10.10                    
|10.11                    
|10.12                    
|10.13                    
|10.14                    
|10.15                    
|10.16                    
|10.17                    
|10.18                    
|10.19                    
|10.20                    
|10.21                    
|10.22                    
|10.23                    
|10.24                    
|10.25                    
|10.26                    
|10.27                    
|                         
|10.28                    
|10.29                    
|10.30                    
|10.31                    
|10.32                    
|10.33                    
|10.34                    
|10.35                    
|10.36                    
|10.37                    
|10.38                    
|10.39                    
|10.40                    
|10.41                    
|10.42                    
|10.43                    
|10.44                    
|10.45                    
|10.46                    
|10.47                    
|10.48                    
|10.49                    
|10.50                    
|10.51                    
|10.52                    
|10.53                    
|10.54                    
|10.55                    
|10.56                    
|14                       
|21                       
|23.1                     
|31.1                     
|31.2                     
|32.1                     
|32.2                     
|Page 6                   
|_________________________
|(1)                      
|(2)                      
|(3)                      
|(4)                      
|(5)                      
|(6)                      
|(7)                      
|(8)                      
|(9)                      
|(10)                     
|(11)                     
|(12)                     
|(13)                     
|(14)                     
|(15)                     
|(16)                     
|(17)                     
|(18)                     
|(19)                     
|(20)                     
|(21)                     
|(22)
(23)                
|(*)                      



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SIGNATURES



Pursuant to the requirements of Section 13 or 15 (d) of the Securities Exchange Act of 1934, the registrant caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.











|HUDSON TECHNOLOGIES, INC.
|-------------------------
|                         
|By:                      
|                         







|Date: | June 18, 2010
|----- | -------------













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