Michael Pray Form 3/A Medidata Solutions / Michael Pray ownership change

SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

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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1. Name and Address of Reporting Person^*

Pray Michael

(Last) (First) (Middle)

C/O MEDIDATA SOLUTIONS, INC.

350 HUDSON STREET, 9TH FLOOR

(Street)

NEW YORK NY 10014

(City) (State) (Zip)

2. Date of Event Requiring Statement (Month/Day/Year)
02/24/2017

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

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

	Director	10% Owner
X	Officer (give title below)	Other (specify below)
EVP, GM Global Sales

5. If Amendment, Date of Original Filed (Month/Day/Year)
02/24/2017

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 Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
Common Stock	37,726	D

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Stock Options (right to buy)	(1)	10/14/2026	Common Stock	28,802	49.7	D

Explanation of Responses:

1. The options vested as to 25% of the shares on October 14, 2017 and 1/36th of the remaining options will become exercisable each month thereafter for the next 36 months.

Remarks:

This amendment is being filed solely to attach the Power of Attorney signed by Mr. Pray.

	/s/ Kathryn E. Schneider, Attorney-in-Fact	02/27/2017
	** 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 5 (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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