Sec Form 4 Filing - CALDWELL DONALD R @ Rubicon Technology, Inc. - 2014-03-24

Insider filing report for Changes in Beneficial Ownership
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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
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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1. Name and Address of Reporting Person
CALDWELL DONALD R
2. Issuer Name and Ticker or Trading Symbol
Rubicon Technology, Inc. [ RBCN]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
X __ Director X __ 10% Owner
_____ Officer (give title below) _____ Other (specify below)
(Last) (First) (Middle)
C/O RUBICON TECHNOLOGY INC., 900 EAST GREEN ST. UNIT A
3. Date of Earliest Transaction (MM/DD/YY)
03/24/2014
(Street)
BENSENVILLE, IL60106
4. If Amendment, Date Original Filed (MM/DD/YY)
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 (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 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 03/24/2014 S 2,500,000 ( 1 ) ( 2 ) D $ 12.42 2,217,851 ( 1 ) ( 3 ) I See footnote ( 1 )
Common Stock 26,863 ( 4 ) D ( 5 )
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 (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 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
(MM/DD/YY)
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
CALDWELL DONALD R
C/O RUBICON TECHNOLOGY INC.
900 EAST GREEN ST. UNIT A
BENSENVILLE, IL60106
X X
Signatures
/s/ Donald R. Caldwell 03/25/2014
Signature of Reporting Person Date
Explanation of Responses:
( 1 )Consists of shares held by Cross Atlantic Technology Fund, II, L.P. and The Co-Investment 2000 Fund, L.P. (the "Funds"). The Reporting Person is a director, shareholder and officer of Cross Atlantic Capital Partners II, Inc., which is the general partner of XATF Management II, L.P., which is the general partner of Cross Atlantic Technology Fund II, L.P. The Reporting Person is a shareholder, director and officer of Co-Invest Capital Partners, Inc., which is the general partner of Co-Invest Management, L.P., which is the general partner of The Co-Investment 2000 Fund, L.P. The Reporting Person disclaims beneficial ownership of the shares held by the Funds except to the extent of his pecuniary interest therein.
( 2 )As part of the issuer's secondary offering, Cross Atlantic Technology Fund II, L.P. sold 1,182,500 shares of its common stock and The Co-Investment 2000 Fund L.P. sold 1,317,500 shares of its common stock.
( 3 )After the sale of shares in the issuer's secondary offering, Cross Atlantic Technology Fund II, L.P. holds 1,047,698 shares of common stock and The Co-Investment 2000 Fund, L.P. holds 1,170,153 shares of common stock. The Reporting Person disclaims beneficial ownership of the shares except to the extent of his pecuniary interest therein.
( 4 )Includes 3,982 shares of restricted stock pursuant to grants that vest according to the following schedule: 995 shares vest on March 31, 2014, 995 shares vest on June 30, 2014, 996 shares vest on September 30, 2014 and 996 shares vest on December 31, 2014.
( 5 )Under the terms of the applicable partnership agreements of the Funds, the Reporting Person is deemed to hold 19,763 shares (including the restricted stock described in footnote (4)) for the benefit of the Funds, which are entitled to receive the net economic benefit of the shares as a credit against the management fees owed by the Funds to Cross Atlantic Capital Partners II, Inc. and Co-Invest Capital Partners, Inc. The Reporting Person disclaims beneficial ownership of the shares except to the extent of his pecuniary interest therein.

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* If the form is filed by more than one reporting person, see Instruction 4(b)(v).
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