Filing Details

Accession Number:
Form Type:
Zero Holdings:
Publication Time:
2014-01-23 17:07:31
Reporting Period:
Filing Date:
Accepted Time:
2014-01-23 17:07:31
SEC Url:
Form 4 Filing
Cik Name Symbol Sector (SIC) IRS No
1293971 Bluebird Bio Inc. BLUE Biological Products, (No Disgnostic Substances) (2836) 000000000
Cik Name Reported Address Insider Title Director Officer Large Shareholder Other
1192595 I Robert Tepper C/o Third Rock Ventures, Llc
29 Newbury Street, 3Rd Floor
Boston MA 02116
Yes No Yes No
Reported Non-Derivative Transactions
Sec. Name Acquisiton - Disposition Date Amount Price Remaning Holdings Equity Swap Involved Form Type Code Nature of Ownership Explanation
Common Stock Disposition 2014-01-21 250,000 $23.91 2,416,974 No 4 S Indirect See footnote
Equity Swap Involved Form Type Code Nature of Ownership Explanation
No 4 S Indirect See footnote
  1. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $23.75 to $24.35, inclusive. The Reporting Person undertakes to provide to bluebird bio Inc., any security holder of bluebird bio Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
  2. The shares are directly held by TRV. The general partner of TRV is Third Rock Ventures GP, L.P. ("TRV GP"). The general partner of TRV GP is TRV GP, LLC ("TRV GP LLC") and the Reporting Person is a Manager of TRV GP LLC, as such, each of TRV GP and TRV GP LLC and the Reporting Person exercises shared voting and investment power over the shares held of record by TRV. The Reporting Person disclaims beneficial ownership of the shares except to the extent of his pecuniary interest therein, if any.