SEC FORM 4

SEC Form 4

FORM 4

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
or Section 30(h) of the Investment Company Act of 1940

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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

1. Name and Address of Reporting Person^*

de Vries Glen Michael

(Last)

(First)

(Middle)

C/O MEDIDATA SOLUTIONS, INC.

350 HUDSON STREET, 9TH FLOOR

(Street)

NEW YORK

10014

(City)

(State)

(Zip)

2. Issuer Name and Ticker or Trading Symbol
Medidata Solutions, Inc. [ MDSO ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director	10% Owner
X	Officer (give title below)	Other (specify below)
	President

3. Date of Earliest Transaction (Month/Day/Year)
02/10/2014

4. If Amendment, Date of Original Filed (Month/Day/Year)

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. 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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	02/10/2014		A⁽¹⁾		18,688	A	$0.00	991,354	D
Common Stock	02/10/2014		A⁽²⁾		123,744	A	$0.00	1,115,098	D
Common Stock	02/10/2014		M⁽³⁾		61,872	A	$0.00	1,176,970	D
Common Stock	02/11/2014		S		20,000⁽⁴⁾	D	$54.3951⁽⁵⁾	1,156,970	D

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 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: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
Restricted Stock Units (Performance-Related)	$0.00	02/10/2014		A⁽⁶⁾		18,691		⁽⁶⁾	⁽⁶⁾	Common Stock	18,691⁽⁶⁾	$0.00	18,691	D
Restricted Stock Units (Performance-Related)	$0.00	02/10/2014		M⁽⁷⁾			30,936	⁽⁷⁾	⁽⁷⁾	Common Stock	30,936⁽⁷⁾	$0.00	0	D

Explanation of Responses:

1. Award of shares of restricted stock under the issuer's Second Amended & Restated 2009 Long-Term Incentive Plan (the "2009 LTIP") on February 10, 2014. The restrictions will lapse with respect to one-fourth of the shares on each of February 10, 2015, February 10, 2016, February 10, 2017 and February 10, 2018.

2. Represents restricted stock units earned in connection with a performance-based restricted stock unit ("PBRSU") award on February 14, 2013, based on achievement of certain targets in fiscal year 2013. The restricted stock units were settled at 200% of the target grant amount. Each restricted stock unit represents a contingent right to receive one share of the issuer's common stock. Shares will be issued in settlement of these restricted stock units in equal annual installments on February 14, 2014, February 14, 2015 and February 14, 2016.

3. Represents restricted stock units earned in connection with a PBRSU award on February 14, 2013, based on achievement of target total stockholder return ("TSR") for 2013 relative to the TSR of companies in the NASDAQ Composite Index for 2013. The restricted stock units were settled at 200% of the target grant amount (the target amount was previously reported in Table II-see footnote 7 below). Each restricted stock unit represents a contingent right to receive one share of the issuer's common stock. Shares will be issued in settlement of these restricted stock units in equal annual installments on February 14, 2014, February 14, 2015 and February 14, 2016.

4. This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on September 12, 2013.

5. Such transaction was executed in multiple trades at prices ranging from $53.35 to $55.12. The price reported reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

6. Award of PBRSUs under the 2009 LTIP on February 10, 2014. The number of PBRSUs reported represents a target grant amount. Each PBRSU represents a contingent right to receive 0-200% of that target number of shares of the issuer's common stock, based on the issuer's TSR as compared to the TSR of companies in the NASDAQ Composite Index for the year ending December 31, 2014. The actual number of shares that will be issued, if at all, in settlement of the PBRSUs may range from 0% to 200% of the target grant and will vest in equal annual installments on February 10, 2015, February 10, 2016 and February 10, 2017. The reporting person also received additional awarded PBRSUs, all subject to corporate financial performance metrics.

7. Indicates conversion upon vesting of certain PBRSUs granted on February 14, 2013. The number of shares has been adjusted to reflect the issuer's two-for-one stock split, which became effective on December 16, 2013.

Remarks:

	/s/ Michael I. Otner, Attorney-in-Fact	02/12/2014
	** 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).
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