Ovascience, Inc. (OVAS): Hedge Funds Are Overweight This Biotech Stock

Page 2 of 5 – SEC Filing

CUSIP Number: 69014Q101

1. Name of Reporting Person: Jennison Associates LLC

S.S. or I.R.S. Identification No. of Above Person: IRS

Identification #52-2069785 (formerly 13-2631108)

2. Check the Appropriate Box if a Member of a Group: Not

Applicable

3. SEC Use Only

4. Citizenship or Place of Organization: Delaware

Number of Shares Beneficially Owned By Each Reporting Person

With:

5. Sole Voting Power: 3,089,079 shares

6. Shared Voting Power: 0 shares

7. Sole Dispositive Power: 0 shares

8. Shared Dispositive Power: 3,089,079 shares

9. Aggregate Amount Beneficially Owned by Each Reporting

Person: 3,089,079 shares

10. Check Box if the Aggregate Amount in Row 9 Excludes

Certain Shares: ( )

11. Percent of Class Represented by Amount in Row 9: 11.3%

12. Type of Reporting Person*: IA

Item 1(a) Name of Issuer: OvaScience, Inc.

Item 1(b) Address of Issuer’s Principal Executive Offices:

9 Fourth Avenue
Waltham, MA 02451

Item 2(a) Name of Person Filing: Jennison Associates LLC

Prudential Sector Funds, Inc.- Prudential Health Sciences Fund

d.b.a. Prudential Jennison Health Sciences Fund

Item 2(b) Address of Principal Business Office or Residence:

466 Lexington Avenue
New York, NY 10017

Item 2(c) Citizenship: Delaware

Item 2(d) Title of Class of Securities: Common

Item 2(e) CUSIP Number: 69014Q101

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