UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

x

Rule 13d-1(b)

o

Rule 13d-1(c)

o

Rule 13d-1(d)

CUSIP No.: 448640102

1

Name of Reporting Person
Castle Creek Arbitrage, LLC

2

Check the Appropriate Box if a Member of a Group

(a)

o

(b)

o

3

SEC Use Only

4

Citizenship or Place of Organization
Delaware, USA

Number of
Shares
Beneficially
Owned by
Each
Reporting
Person With

5

Sole Voting Power
0

6

Shared Voting Power
0

7

Sole Dispositive Power
0

8

Shared Dispositive Power
0

9

Aggregate Amount Beneficially Owned by Each Reporting Person
0

10

Check Box if the Aggregate Amount in Row (9) Excludes Certain Shares  o

11

Percent of Class Represented by Amount in Row (9)
0%

12

Type of Reporting Person
IA

CUSIP No.: 448640102

1

Name of Reporting Person
Mr. Allan Weine

2

Check the Appropriate Box if a Member of a Group

(a)

o

(b)

o

3

SEC Use Only

4

Citizenship or Place of Organization
USA

Number of
Shares
Beneficially
Owned by
Each
Reporting
Person With

5

Sole Voting Power
0

6

Shared Voting Power
0

7

Sole Dispositive Power
0

8

Shared Dispositive Power
0

9

Aggregate Amount Beneficially Owned by Each Reporting Person
0

10

Check Box if the Aggregate Amount in Row (9) Excludes Certain Shares  o

11

Percent of Class Represented by Amount in Row (9)
0%

12

Type of Reporting Person
HC

CUSIP No.: 448640102

Item 1(a).

Name of Issuer:
Hyde Park Acquisition Corp II

Item 1(b).

Address of Issuer’s Principal Executive Offices:
500 Fifth Avenue, 50th Floor, New York, NY 10110

Item 2(a).

Name of Person Filing:
Castle Creek Arbitrage, LLC and Mr. Allan Weine

Item 2(b).

Address of Principal Business Office or, if none, Residence:
Principal Business Office for Castle Creek Arbitrage, LLC and Mr. Weine:

227 West Monroe, Suite 3550

Chicago, IL 60606

Item 2(c).

Citizenship:
Castle Creek Arbitrage, LLC is a Delaware limited liability company

Mr. Weine is a US citizen

Item 2(d).

Title of Class of Securities:
Common Stock

Item 2(e).

CUSIP Number:
448640102

Item 3.

If this statement is filed pursuant to section 240.13d-1(b), or 13d-2(b) or (c) check whether the person filing is a:

(a)

o

Broker or dealer registered under section 15 of the Act (15 U.S.C. 78c);

(b)

o

Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);

(c)

o

Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);

(d)

o

Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C 80a-8);

(e)

x*

An investment adviser in accordance with 240.13d-1(b)(1)(ii)(E);

(f)

o

An employee benefit plan or endowment fund in accordance with 240.13d-1(b)(1)(ii)(F);

(g)

x*

A parent holding company or control person in accordance with 240.13d-1(b)(1)(ii)(G);

(h)

o

A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);

(i)

o

A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);

(j)

o

A non-U.S. institution in accordance with 240.13d-1(b)(1)(ii)(J);

(k)

o

Group, in accordance with 240.13d-1(b)(1)(ii)(K).

* The persons filing this Schedule 13G are Castle Creek Arbitrage, LLC, an investment adviser registered with the SEC, and Mr. Allan Weine, the managing member of Castle Creek Arbitrage, LLC.  The reporting persons do not admit that they constitute a group.

Item 4.

Ownership:

Provide the following information regarding the aggregate number and percentage of the class of securities of the issuer identified in Item 1.

(a)

Amount beneficially owned:   

0

(b)

Percent of class:   

0%

(c)

Number of shares as to which the person has:

(i)

Sole power to vote or to direct the vote:   

0

(ii)

Shared power to vote or to direct the vote:    

0

(iii)

Sole power to dispose or to direct the disposition of:   

0

(iv)

Shared power to dispose or to direct the disposition of:   

0

Item 5.

Ownership of Five Percent or Less of a Class:

If this statement is being filed to report the fact that as of the date hereof the reporting person has ceased to be the beneficial owner of more than five percent of the class of securities, check the following   x.

Item 6.

Ownership of More than Five Percent on Behalf of Another Person

Item 7.

Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on By the Parent Holding Company

Item 8.

Identification and Classification of Members of the Group

Item 9.

Notice of Dissolution of Group

Item 10.

Certification:

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect.

Allan D. Weine

Castle Creek Arbitrage LLC

By:

/s/ Allan Weine

By:

/s/ Constance Wick

Allan Weine

Constance Wick

Chief Compliance Officer

ALLAN WEINE

By:

/s/ Allan Weine

Allan Weine

CASTLE CREEK ARBITRAGE, LLC

By:

/s/ Constance Wick

Constance Wick

Chief Compliance Officer