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 *
CommScope, Inc. of North Carolina
   2. Issuer Name and Ticker or Trading Symbol
HYDROGENICS CORP [HYGS] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director __X__ 10% Owner
_____ Officer (give title below) _____ Other (specify below)
(Last)
(First)
(Middle)
1100 COMMSCOPE PLACE, SE		 3. Date of Earliest Transaction (Month/Day/Year)
03/31/2011
(Street)

HICKORY, NC 28602		 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 03/31/2011   P   488,998 A $ 4.09 1,575,659 I See Footnote (1)

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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
CommScope, Inc. of North Carolina
1100 COMMSCOPE PLACE, SE
HICKORY, NC 28602		     X    
CommScope Holding Company, Inc.
1100 COMMSCOPE PLACE, SE
HICKORY, NC 28602		     X    
COMMSCOPE INC
1100 COMMSCOPE PLACE, SE
HICKORY, NC 28602		     X    

Signatures

 /s/ Frank B. Wyatt II, Senior Vice President of COMMSCOPE, INC. OF NORTH CAROLINA   04/04/2010
**Signature of Reporting Person Date
 /s/ Frank B. Wyatt II, Senior Vice President of COMMSCOPE HOLDING COMPANY, INC.   04/04/2010
**Signature of Reporting Person Date
 /s/ Frank B. Wyatt II, Senior Vice President of COMMSCOPE, INC.   04/04/2010
**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) The amount listed reflects the beneficial ownership of the Issuer's securities owned by CommScope, Inc. of North Carolina ("CommScope NC"), all of which may be deemed attributable to CommScope Holding Company, Inc. and CommScope, Inc. because CommScope NC is a wholly-owned subsidiary of CommScope, Inc., which is itself a wholly-owned subsidiary of CommScope Holding Company, Inc.

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.

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